CN119406506A - A method for preparing low-carbon cement - Google Patents
A method for preparing low-carbon cement Download PDFInfo
- Publication number
- CN119406506A CN119406506A CN202411347239.6A CN202411347239A CN119406506A CN 119406506 A CN119406506 A CN 119406506A CN 202411347239 A CN202411347239 A CN 202411347239A CN 119406506 A CN119406506 A CN 119406506A
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- Prior art keywords
- fixed
- cement
- roller
- grinding
- processing box
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- 239000004568 cement Substances 0.000 title claims abstract description 111
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 22
- 238000000227 grinding Methods 0.000 claims abstract description 89
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 10
- 235000019738 Limestone Nutrition 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims abstract description 7
- 239000006028 limestone Substances 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims abstract description 5
- 239000010881 fly ash Substances 0.000 claims abstract 3
- 238000009837 dry grinding Methods 0.000 claims abstract 2
- 238000000265 homogenisation Methods 0.000 claims abstract 2
- 239000000428 dust Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 44
- 229910052742 iron Inorganic materials 0.000 abstract description 22
- 239000012535 impurity Substances 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 7
- 238000003754 machining Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/30—Driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
- C04B7/4469—Burning; Melting in shaft or vertical kilns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
- B02C2013/28609—Discharge means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
- B02C2013/28618—Feeding means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of cement preparation and discloses a preparation method of low-carbon cement, which comprises the following steps that the proportion of raw materials is 70% -5% of limestone and 10% -5% of clay, then a proper amount of slag fly ash is selected according to construction requirements and 10% -5% of slag fly ash is selected, cement raw materials are prepared into cement clinker through dry grinding homogenization and calcination, the prepared cement clinker is conveyed into a roller press main body, the cement clinker is pre-ground through a pre-grinding assembly arranged at the top of the roller press main body, the influence of the cement granularity exceeding standard on the fixed roller and the movable roller is avoided, meanwhile, iron impurities in the cement clinker are removed by magnetic rods, the influence of the iron impurities on the fixed roller and the movable roller is reduced, the grinding yield and efficiency of the fixed roller and the movable roller are improved, the electricity consumption of the invention is reduced, and the carbon emission of the cement prepared by the invention is indirectly reduced.
Description
Technical Field
The invention relates to the technical field of cement preparation, in particular to a preparation method of low-carbon cement.
Background
The cement is a powdery hydraulic inorganic cementing material, and is slurry after being added with water and stirred, can be hardened in air or water, and can firmly bond sand, stone and other materials together, and the production of the cement can be generally divided into three working procedures of raw material preparation, clinker calcination, cement grinding and the like.
The cement grinding is the final procedure of cement manufacture and the procedure with the greatest power consumption, and the main function of the cement grinding is to grind cement clinker (as well as retarder, performance adjusting material and the like) to proper granularity (expressed by fineness, specific surface area and the like), form a certain particle size distribution, increase the hydration area, accelerate the hydration rate and meet the requirements of cement paste coagulation and hardening;
The cement grinding is generally carried out by adopting a ball mill grinding system, a vertical mill grinding system, a roller press grinding system and the like, for example, in the roller press grinding system, two independent motors are needed to respectively drive two squeeze rollers, the squeeze rollers are also needed to be provided with a hydraulic system for controlling the squeezing pressure of a controller, and other control systems and equipment are matched, so that the roller press equipment has high power consumption, high power consumption and high power generation capacity, and the high power generation capacity is required to increase the carbon emission.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of low-carbon cement, which solves the problems in the prior art.
The invention provides a preparation method of low-carbon cement, which comprises the following steps:
S1, according to the weight of cement produced by construction requirements, limestone and clay with corresponding proportions are selected as main raw materials, wherein the proportions of the raw materials are 70% -5% of limestone and 10% -5% of clay, then an appropriate amount of slag powder coal ash is selected according to the construction requirements, and the raw materials are ground and homogenized by a dry method to prepare cement raw materials;
S2, calcining the cement raw material by a mechanical vertical kiln to prepare cement clinker;
And S3, conveying the prepared cement clinker into a roller press, grinding the cement clinker to the required granularity, proportioning the cement by a clinker microcomputer proportioning system, so that the cement clinker can be added with natural gypsum and other mixed materials required by construction, homogenizing the proportioned cement, packaging the homogenized cement by a packaging machine, and storing the packaged cement in a warehouse.
Optionally, the roller press in S3 includes a roller press main body and a controller, two sides of the roller press main body are fixed with a supporting carriage, the outside of the supporting carriage is hinged with a disassembling door, a grinding cavity is formed in the roller press main body, a fixed roller is rotatably connected in the grinding cavity, a feed inlet is formed in the top of the roller press main body, the bottom of the grinding cavity is obliquely arranged, and a receiving door is hinged to the outside of one side of the lower end of the grinding cavity;
The inner walls of the two supporting boxes are respectively fixed with a hydraulic cylinder, the hydraulic cylinders are controlled by a controller, the outside of an output shaft of one hydraulic cylinder is fixed with a mounting frame, the inside of the mounting frame is fixed with a first motor, the first motor is controlled by the controller, one side of the roller press main body, which is close to the mounting frame, is provided with an adjusting groove, the inside of the adjusting groove is slidably connected with a movable roller, the two ends of the movable roller and the fixed roller are respectively positioned in the two supporting boxes, the outside of one end, which is far away from the mounting frame, of the movable roller is rotationally connected with a movable frame, and the movable frame is fixed with the output shaft of one hydraulic cylinder, which is far away from the mounting frame;
the top of the roller press main body is provided with a pre-grinding assembly, and the pre-grinding assembly is used for pre-grinding cement clinker.
Optionally, the pre-grinding assembly comprises a processing box, the bottom of the processing box is fixed with the top of the roller press main body, a box door is fixed on one side of the processing box, which is close to the moving frame, through bolts, a feed chute is formed in the top end of the vertical part of the processing box, a pre-grinding cavity is formed in the bottom end of the vertical part of the processing box, and a filter hole is formed in the bottom of the pre-grinding cavity;
The externally mounted who is close to mounting bracket one side of processing case has the support, and the inside of support is fixed with the second motor, the second motor passes through controller control, the second motor comprises driving motor and gear, the inside rotation that processing case is close to second motor one side is connected with the transmission shaft, the outside of transmission shaft is fixed with the gear wheel, and the gear wheel is located the outside of processing case, the outside joint that the transmission shaft is close to processing case one end has broken roller, and broken roller is located the inside of premilled chamber, and the inside that is close to mounting bracket one side and supports the railway carriage or compartment is fixed with the gearbox, the fixed roller is connected with the gearbox transmission, the one end that processing case was kept away from to the transmission shaft is connected with the gearbox transmission.
Optionally, the below fixedly connected with support frame that processing incasement portion was located the premiller chamber, the top joint of support frame has the material receiving plate, the top of material receiving plate is fixed with the ejector pin, the both sides of material receiving plate bottom are fixed with the sketch plate, the bin outlet has been seted up to the surface of material receiving plate.
Optionally, one side that processing case horizontal part is close to the pneumatic cylinder is fixed with the collection chamber, one side that the collection chamber is close to the chamber door is fixed with first sealing through the bolt fastening, processing incasement wall is located the top of collecting the chamber and is fixed with the locating rack, the inside sliding connection of locating rack has a plurality of magnetic bars, the inner wall that processing case horizontal part is close to pneumatic cylinder one side is fixed with electric telescopic handle, and one of electric telescopic handle's output shaft and magnetic bar is fixed, the one end that electric telescopic handle was kept away from to the magnetic bar is fixed with the scraper blade, the below that processing incasement portion was located the support frame is fixed with and holds the material platform, the bottom of scraper blade offsets with the top that holds the material platform.
Optionally, the inside sliding connection on locating rack top has the multiunit to watch the pole, the group number of watching the pole is unanimous with the quantity of magnetic rod, one side that the locating rack top is close to electric telescopic handle is fixed with the limiting plate, the inside threaded connection of limiting plate has the screw rod, the quantity of screw rod is unanimous with the quantity of magnetic rod, and every magnetic rod corresponds a screw rod and a set of observation pole, the bottom of screw rod is fixed with the bottom plate, the bottom of bottom plate is fixed with the sponge abrasive brick, the sponge abrasive brick is located the top of magnetic rod.
Optionally, the inside sliding connection of collection chamber both sides has the slide bar, the one end that the slide bar is close to electric telescopic handle is fixed with the connecting plate, and two connecting plates are fixed with one of them bar magnet respectively.
Optionally, a dust collecting cavity is fixed below the support frame at the horizontal part of the processing box, a second sealing door is hinged to one side, away from the second motor, of the dust collecting cavity, a spring is fixed to one side, away from the collecting cavity, of the dust collecting cavity, a rubber plate is fixed to one end of the spring, the rubber plate is in sliding connection with the dust collecting cavity, an air inlet is formed in the inner wall, close to one side of the collecting cavity, of the dust collecting cavity, notches are formed in the two sides, close to one side of the air inlet, of the dust collecting cavity, an air inlet baffle is hinged to the inner wall, close to one side of the air inlet, of the dust collecting cavity, a connecting rod is fixed to the linkage baffle, and the connecting rod is fixed to the linkage baffle;
the inner wall of the dust collection cavity above the air inlet is provided with an air outlet, and one side of the outer wall of the dust collection cavity, which is close to the collection cavity, is hinged with an air exhaust baffle.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the preparation method of the low-carbon cement, the pre-grinding assembly is arranged at the top of the roller press main body, the cement clinker is subjected to pre-grinding operation, so that the granularity of the cement clinker can reach the standard, the influence of the cement granularity exceeding standard on the shutdown of the fixed roller and the movable roller is avoided, meanwhile, iron impurities in the pre-ground cement clinker are screened out, and iron removal operation is performed through the magnetic rod, so that the influence of the iron impurities on the fixed roller and the movable roller is reduced, the grinding yield and efficiency of the fixed roller and the movable roller are improved, the electricity consumption of the cement preparation device is further reduced, and the carbon emission of the cement preparation device is indirectly reduced.
2. According to the preparation method of the low-carbon cement, through the observation rod which is in sliding connection with the inside of the limiting frame, after the surface of the magnetic rod is worn, the magnetic rod is sunk under the observation rod, the corresponding screw rod can be rotated, the sponge grinding block is controlled to be in contact with the worn magnetic rod, and then the magnetic rod is polished and polished, so that the magnetism of the magnetic rod can be recovered, the iron removal efficiency of the magnetic rod is enhanced, and the grinding efficiency of the fixed roller and the movable roller is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an inside view of the roll squeezer body of the present invention;
FIG. 3 is a structural view of the support box and process box of the present invention;
FIG. 4 is a schematic illustration of the positional relationship of the transmission and the support box of the present invention;
FIG. 5 is a cross-sectional view of the structure of the present invention;
FIG. 6 is a cross-sectional view of the structure of the processing box of the present invention;
FIG. 7 is a cross-sectional view of the dust collection chamber of the present invention;
FIG. 8 is a schematic view of the structure of the support frame of the present invention;
FIG. 9 is a schematic diagram showing the positional relationship among the magnetic rod, the electric telescopic rod and the connecting plate according to the structure of the invention;
FIG. 10 is a cross-sectional view of the stop block of the present invention;
fig. 11 is a partial enlarged view at a in fig. 5.
In the figure, 1, a roller press main body; 11, a supporting box, 12, a dismantling door, 13, a grinding cavity, 14, a fixed roller, 15, a feed inlet, 16, a receiving door, 2, a hydraulic cylinder, 21, a mounting rack, 22, a first motor, 23, a regulating groove, 24, a movable roller, 25, a movable rack, 3, a processing box, 31, a box door, 32, a feed groove, 33, a premill cavity, 34, a second motor, 35, a transmission shaft, 351, a gear disc, 36, a crushing roller, 37, a gearbox, 4, a supporting frame, 41, a receiving plate, 42, a mandril, 43, a special-shaped plate, 44, a discharge opening, 5, a collecting cavity, 51, a first sealing door, 52, a limiting rack, 53, a magnetic rod, 54, an electric telescopic rod, 55, a scraping plate, 56, a material bearing table, 6, an observation rod, 61, a limiting plate, 62, a screw rod, 63, a bottom plate, 64, a sponge grinding block, 7, a sliding rod, 71, a connecting plate, 8, a dust collecting cavity, 81, a second sealing door, 82, a spring, 83, a rubber plate, 84, a special-shaped plate, a discharge opening, a groove, a collecting cavity, a connecting rod, a gas inlet, a baffle, a gas inlet, a baffle, 91, a baffle plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-11, a method for preparing low-carbon cement comprises the following steps:
S1, according to the weight of cement produced by construction requirements, limestone and clay with corresponding proportions are selected as main raw materials, wherein the proportions of the raw materials are 70% -5% of limestone and 10% -5% of clay, then an appropriate amount of slag powder coal ash is selected according to the construction requirements, and the raw materials are ground and homogenized by a dry method to prepare cement raw materials;
S2, calcining the cement raw material by a mechanical vertical kiln to prepare cement clinker;
S3, conveying the prepared cement clinker into a roller press, grinding the cement clinker to the required granularity, proportioning the cement by a clinker microcomputer proportioning system, so that the cement clinker can be added with natural gypsum and other mixed materials required by construction, homogenizing the proportioned cement, packaging the homogenized cement by a packaging machine, and storing the packaged cement in a warehouse;
The roller press in the S3 comprises a roller press main body 1 and a controller, wherein a supporting box 11 is fixed on two sides of the roller press main body 1, a disassembling door 12 is hinged to the outer part of the supporting box 11, a grinding cavity 13 is formed in the roller press main body 1, a fixed roller 14 is rotatably connected to the inner part of the grinding cavity 13, a feeding hole 15 is formed in the top of the roller press main body 1, the bottom of the grinding cavity 13 is obliquely arranged, and a material collecting door 16 is hinged to the outer part of one side of the lower end of the grinding cavity 13;
The inner walls of the two supporting boxes 11 are fixedly provided with hydraulic cylinders 2, the hydraulic cylinders 2 are controlled by a controller, the outer part of an output shaft of one hydraulic cylinder 2 is fixedly provided with a mounting frame 21, the inner part of the mounting frame 21 is fixedly provided with a first motor 22, the first motor 22 is controlled by the controller, one side of the roller press main body 1, which is close to the mounting frame 21, is provided with an adjusting groove 23, the inner part of the adjusting groove 23 is slidably connected with a movable roller 24, two ends of the movable roller 24 and the fixed roller 14 are respectively positioned in the two supporting boxes 11, the outer part of one end, which is far away from the mounting frame 21, of the movable roller 24 is rotatably connected with a movable frame 25, the movable frame 25 is fixed with the output shaft of one hydraulic cylinder 2, which is far away from the mounting frame 21, the top of the roller press main body 1 is provided with a pre-grinding assembly, and the pre-grinding assembly is used for pre-grinding cement clinker;
The pre-grinding assembly comprises a processing box 3, the bottom of the processing box 3 is fixed with the top of the roller press main body 1, a box door 31 is fixed on one side of the processing box 3, which is close to the movable frame 25, through bolts, a feed chute 32 is arranged at the top end of the vertical part of the processing box 3, a pre-grinding cavity 33 is arranged at the bottom end of the vertical part of the processing box 3, and a filtering hole is arranged at the bottom of the pre-grinding cavity 33;
The outer part of the machining box 3, which is close to one side of the mounting frame 21, is provided with a bracket, a second motor 34 is fixed in the bracket, the second motor 34 is controlled by a controller, the second motor 34 is composed of a driving motor and a gear, the inner part of the machining box 3, which is close to one side of the second motor 34, is rotationally connected with a transmission shaft 35, the outer part of the transmission shaft 35 is fixedly provided with a gear disc 351, the gear disc 351 is positioned on the outer side of the machining box 3, the outer part of the transmission shaft 35, which is close to one end of the machining box 3, is clamped with a crushing roller 36, the crushing roller 36 is positioned in the premiller 33, the inner part, which is close to one side of the mounting frame 21, of the supporting box 11 is fixedly provided with a gearbox 37, the fixed roller 14 is in transmission connection with the gearbox 37, and one end, which is far away from the machining box 3, of the transmission shaft 35 is in transmission connection with the gearbox 37;
The processing box 3 is internally and fixedly connected with a support frame 4 below the pre-grinding cavity 33, a material receiving plate 41 is clamped at the top of the support frame 4, a push rod 42 is fixed at the top of the material receiving plate 41, irregular plates 43 are fixed at two sides of the bottom of the material receiving plate 41, a material discharging port 44 is formed in the surface of the material receiving plate 41, a collecting cavity 5 is fixed at one side of the horizontal part of the processing box 3, which is close to the hydraulic cylinder 2, a first sealing door 51 is fixed at one side of the collecting cavity 5, which is close to the box door 31, through bolts, a limiting frame 52 is fixed above the collecting cavity 5 on the inner wall of the processing box 3, a plurality of magnetic rods 53 are slidably connected in the limiting frame 52, an electric telescopic rod 54 is fixed at the inner wall of the horizontal part of the processing box 3, which is close to one side of the hydraulic cylinder 2, an output shaft of the electric telescopic rod 54 is fixed with one of the magnetic rods 53, a scraping plate 55 is fixed at one end of the magnetic rods 53, a material bearing table 56 is fixed at the bottom of the scraping plate 55, which is propped against the top of the material bearing table 56, which is positioned below the support frame 4;
In the specific operation process, the hydraulic cylinder 2 is started through the controller, the installation frame 21 and the moving frame 25 are pushed to move in the supporting carriage 11 through ejection of the hydraulic cylinder 2, the first motor 22 is driven to synchronously move through the installation frame 21, the moving frame 25 is used for driving the movable roller 24 to move in the adjusting groove 23, meanwhile, the first motor 22 can synchronously drive the movable roller 24 to move in the adjusting groove 23, the movable roller 24 moves in the grinding cavity 13, the distance between the movable roller 24 and the fixed roller 14 is adjusted, and then the first motor 22 and the second motor 34 are started through the controller;
The second motor 34 drives the transmission shaft 35 meshed with the gear thereof to rotate, the crushing roller 36 is driven to rotate by the transmission shaft 35, then the prepared cement clinker is conveyed into the processing box 3 through the feeding groove 32, when the cement clinker enters the processing box 3, the granularity of the cement clinker reaches the standard, the cement clinker falls to the top of the material receiving plate 41 through the filtering hole at the bottom of the premilled cavity 33, then passes through the material receiving plate 41 and falls to the top of the material receiving table 56, and the granularity of the cement clinker does not reach the standard, is intercepted in the premilled cavity 33, and is hammered by the rotation of the crushing roller 36 to premilled the cement clinker which does not reach the standard, so that the granularity of the cement clinker conveyed into the processing box 3 reaches the standard, and the cement clinker enters the horizontal part of the inner cavity of the processing box 3 through the premilled cavity 33 and finally is concentrated at the top of the material receiving table 56;
Specifically, when the gear of the second motor 34 drives the transmission shaft 35 to rotate, one end of the transmission shaft 35 is in transmission connection with the gearbox 37, and the gearbox 37 is in transmission connection with the fixed roller 14, so that the transmission shaft 35 rotates and simultaneously drives the fixed roller 14 to synchronously rotate, and the rotating speed of the fixed roller 14 is the same as the rotating speed of the movable roller 24 under the control of the gearbox 37;
After cement clinker is pre-ground and stacked on the top of the material bearing table 56, the controller starts the electric telescopic rod 54, the magnetic rod 53 is driven to slide in the limiting frame 52 through ejection of the electric telescopic rod 54, the magnetic rod 53 moves towards the material bearing table 56, the magnetic rod 53 drives the scraping plate 55 to synchronously move towards the material bearing table 56 in the moving process, when the scraping plate 55 moves towards the material bearing table 56, the inclined plane of the scraping plate 55 is inserted into the cement clinker, and then the electric telescopic rod 54 is controlled to continuously eject until the scraping plate 55 abuts against the inner wall of the processing box 3, and when the scraping plate 55 abuts against the inner wall of the processing box 3, the magnetic rod 53 is also inserted into the cement clinker on the top of the material bearing table 56;
Because the cement clinker is subjected to pre-grinding by the grinding roller 36, the large-particle clinker in the cement clinker is crushed, and the original large-particle cement clinker is inevitably contained with iron impurities, after the pre-grinding, the iron impurities and the cement clinker are mixed together, when the magnetic rod 53 is inserted into the cement clinker, the iron impurities mixed in the cement clinker can be adsorbed, then the electric telescopic rod 54 is controlled to return, the electric telescopic rod 54 is driven to synchronously return, the magnetic rod 53 drives the scraping plate 55 to synchronously return, the scraping plate 55 is driven to move in the return towards the direction of the feed inlet 15 until the cement clinker is separated from the feed inlet 15 and falls above the feed inlet 15, and then enters the grinding cavity 13 through the feed inlet 15;
after the cement clinker subjected to pre-grinding and iron removal enters the grinding cavity 13 through the feed inlet 15, the cement clinker can be extruded by the fixed roller 14 and the movable roller 24 relatively, finally a cake is formed and is piled at the bottom of the grinding cavity 13,
Further, when the electric telescopic rod 54 is in return stroke, the magnetic rod 53 and the scraping plate 55 are driven to synchronously return stroke, and the magnetic rod 53 passes through the limiting frame 52 in the return stroke process, and the limiting frame 52 is in sliding connection with the magnetic rod 53 and is mutually matched with the magnetic rod 53, so that when the magnetic rod 53 adsorbed with the iron impurities is in return stroke, the iron impurities on the surface of the magnetic rod are scraped by the limiting frame 52, and the iron impurities fall into the collecting cavity 5;
Therefore, the controller can control the repeated ejection and return of the electric telescopic rod 54, so that the magnetic rod 53 and the scraping plate 55 can repeatedly move at the top of the material bearing table 56, when the scraping plate 55 and the magnetic rod 53 are ejected, iron removal operation can be carried out on cement clinker at the top of the material bearing table 56, in the return of the scraping plate 55 and the magnetic rod 53, the cement clinker at the top of the material bearing table 56 after iron removal can be conveyed into the grinding cavity 13, and meanwhile, in the return process of the magnetic rod 53, iron impurities adsorbed on the surface of the magnetic rod can be removed;
Therefore, when the fixed roller 14 and the movable roller 24 carry out final grinding, the influence of iron impurities on the fixed roller 14 and the movable roller 24 can be reduced, the probability of damage to the surfaces of the fixed roller 14 and the movable roller 24 due to the iron impurities is reduced, the surface abrasion of the fixed roller 14 and the movable roller 24 is reduced, the quality and the efficiency of grinding the cement clinker by the fixed roller 14 and the movable roller 24 are indirectly improved, the grinding yield of the invention in unit time is improved, the probability of repeatedly grinding the cement clinker in the roller press main body 1 is reduced, the time of repeatedly grinding the cement clinker is reduced, the integral grinding time of the cement clinker is shortened, the integral operation time of the roller press main body 1 is shortened, the power consumption of the roller press main body 1 is reduced, and the carbon emission of the roller press main body 1 in the cement preparation process is further reduced;
Meanwhile, the granularity of the cement clinker extruded by the fixed roller 14 and the movable roller 24 is more uniform, so that the standard reaching rate is higher, and further, the phenomenon that the movable roller 24 and the fixed roller 14 vibrate too much due to the fact that the granularity of the cement clinker exceeds the standard is avoided, the system is stopped in a jumping mode, and the cement grinding efficiency is further improved;
Further, when the electric telescopic rod 54 is pushed out, the magnetic rod 53 and the scraping plate 55 are driven to move towards the direction of the material bearing table 56, the top of the scraping plate 55 is sequentially contacted with the irregular plate 43, the irregular plate 43 drives the material receiving plate 41 to move up and down and shake after being contacted with the scraping plate 55, when the material receiving plate 41 moves and shakes, the ejector rod 42 can be driven to synchronously move and shake, the ejector rod 42 is positioned below the pre-grinding cavity 33, the number of the arranged ejector rods 42 corresponds to the number of the filter holes of the pre-grinding cavity 33, and when the ejector rod 42 moves up and down, the ejector rod 42 can be pushed into the filter holes at the bottom of the pre-grinding cavity 33 and shake, so that the situation that the pre-grinding cavity 33 is blocked by accumulation is avoided, and the smoothness of the pre-grinding cavity 33 after pre-grinding is ensured;
Meanwhile, after the cement clinker in the pre-grinding cavity 33 reaches the standard, the cement clinker falls into the top of the material receiving plate 41 through the filtering holes, when the material receiving plate 41 shakes, the material discharging opening 44 can be prevented from being blocked by the cement clinker, so that the smoothness of the material discharging opening 44 is ensured, the cement clinker after pre-grinding is ensured to fall into the top of the material bearing table 56 more quickly, the subsequent iron removal of the cement clinker and the efficiency of entering the grinding cavity 13 for final powder are improved, and the grinding efficiency of the cement clinker is further improved.
It should be noted that, a scattering classifier is optionally used in the grinding cavity 13, so that the material cake can be directly scattered and separated in the grinding cavity 13, or the material cake can be transported out of the grinding cavity 13 and then scattered;
The position of the supporting frame 4 is located at a horizontal portion in the processing box 3, and the receiving plate 41 is located at a vertical portion in the processing box 3, so when the shaped plate 43 contacts with the scraping plate 55, the shaped plate 43 can only drive the receiving plate 41 to displace in the vertical portion of the processing box 3, that is, the receiving plate 41 can only displace up and down along the vertical portion of the processing box 3.
Embodiment two:
The inside sliding connection in the top of the spacing 52 has a plurality of groups of observation poles 6, the group number of the observation poles 6 is the same as the number of the magnetic rods 53, a spacing plate 61 is fixed on one side of the top of the spacing 52 close to the electric telescopic rod 54, the internal thread of the spacing plate 61 is connected with a screw rod 62, the number of the screw rods 62 is the same as the number of the magnetic rods 53, each magnetic rod 53 corresponds to one screw rod 62 and a group of observation poles 6, a bottom plate 63 is fixed at the bottom of the screw rod 62, a sponge grinding block 64 is fixed at the bottom of the bottom plate 63, and the sponge grinding block 64 is positioned above the magnetic rods 53;
Specifically, when the invention is used for a long time, the surface of the magnetic rod 53 is inevitably oxidized and worn, and the iron removal efficiency is affected by the oxidation and the wear of the magnetic rod 53 can be observed through observing the state of the rod 6;
When the surface of the magnetic rod 53 is oxidized and worn, the surface of the magnetic rod 53 is in an uneven state, and as the observation rod 6 is in sliding connection with the limiting frame 52, the bottom of the observation rod 6 is propped against the top of the magnetic rod 53, the observation rod 6 is limited by the limiting frame 52 and cannot be laterally displaced, when the magnetic rod 53 passes through the limiting frame 52, the uneven surface of the magnetic rod 53 passes through the bottom of the observation rod 6, and the concave part of the surface of the magnetic rod 53 can cause the part of the observation rod 6 to be sunken;
After observing that the observation rod 6 is sunk, a worker can find a corresponding screw rod 62 according to the corresponding magnetic rod 53, then rotate the corresponding screw rod 62, so that the screw rod 62 rotates downwards, the screw rod 62 drives the bottom plate 63 and the sponge grinding block 64 to rotate downwards, the sponge grinding block 64 contacts with the magnetic rod 53 which is oxidized or worn, the electric telescopic rod 54 drives the magnetic rod 53 to repeatedly move, so that the magnetic rod 53 can receive the repeated friction of the sponge grinding block 64, then the polishing and polishing effects on the magnetic rod 53 are achieved through the sponge grinding block 64, the oxidized and uneven parts of the magnetic rod 53 are restored to a flat state, then the magnetism of the magnetic rod 53 is restored, the iron removal efficiency of the magnetic rod 53 is ensured, and the influence of iron impurities in cement clinker on the fixed roller 14 and the movable roller 24 is reduced, so that the cement preparation efficiency is improved.
It should be noted that, the bottom of the observation rod 6 is spherical, so that the observation rod 6 can be attached to the surface of the magnetic rod 53 under the influence of gravity while the magnetic rod 53 can be ensured to move normally, and then the accuracy of the observation rod 6 in displaying the surface flatness of the magnetic rod 53 is improved.
Embodiment III:
The inside of the two sides of the collecting cavity 5 is slidably connected with a sliding rod 7, one end of the sliding rod 7, which is close to the electric telescopic rod 54, is fixedly provided with a connecting plate 71, the two connecting plates 71 are respectively fixed with one of the magnetic rods 53, a dust collecting cavity 8 is fixed below the horizontal part of the processing box 3, which is positioned below the supporting frame 4, one side of the dust collecting cavity 8, which is far away from the second motor 34, is hinged with a second sealing door 81, one side of the dust collecting cavity 8, which is far away from the collecting cavity 5, is fixedly provided with a spring 82, one end of the spring 82 is fixedly provided with a rubber plate 83, and the rubber plate 83 is slidably connected with the dust collecting cavity 8;
The inner wall of the dust collection cavity 8, which is close to one side of the collection cavity 5, is provided with an air inlet 84, the inner wall of the dust collection cavity 8, which is positioned at two sides of the air inlet 84, is provided with a notch 85, the inner wall of the dust collection cavity 8, which is close to one side of the air inlet 84, is hinged with an air inlet baffle 86, the lower parts of two ends of the air inlet baffle 86 are fixedly provided with a connecting rod 87, the inner wall of the dust collection cavity 8, which is close to one side of the notch 85, is hinged with a linkage baffle 88, the connecting rod 87 is fixedly connected with the linkage baffle 88, the inner wall of the dust collection cavity 8, which is positioned above the air inlet 84, is provided with an air outlet 9, and one side of the outer wall of the dust collection cavity 8, which is close to the collection cavity 5, is hinged with an air outlet baffle 91;
Specifically, after the electric telescopic rod 54 is pushed out, the magnetic rod 53 can be driven to move towards the dust collection cavity 8, the magnetic rod 53 drives the connecting plate 71 to move towards the dust collection cavity 8, the connecting plate 71 drives the sliding rod 7 to move towards the dust collection cavity 8, the sliding rod 7 is inserted into the notch 85 in the moving process, is propped against the linkage baffle 88 and pushes the linkage baffle 88 to turn over, so that one end of the sliding rod 7 enters the dust collection cavity 8, and along with the continuous push-out of the electric telescopic rod 54, one end of the sliding rod 7 contacts with the rubber plate 83 and pushes the rubber plate 83 to move in the dust collection cavity 8;
The linkage baffle 88 drives the air inlet baffle 86 to synchronously overturn through the connecting rod 87 in the overturning process, so that the air inlet 84 is opened, the dust collection cavity 8 is communicated with the processing box 3, when the slide rod 7 pushes the rubber plate 83 to move in the dust collection cavity 8, the air suction effect is achieved, the air flow in the processing box 3 is accelerated to flow towards the inside of the dust collection cavity 8, and then the dust generated by the pre-grinding of the crushing roller 36 in the processing box 3 is pumped into the inside of the dust collection cavity 8 along with the air flow, so that the dust collection effect is achieved;
When the electric telescopic rod 54 returns, the magnetic rod 53 drives the connecting plate 71 to synchronously return, the connecting plate 71 drives the sliding rod 7 to return, after the sliding rod 7 returns, the linkage baffle 88 drives the connecting rod 87 and the air inlet baffle 86 to be closed again to seal the air inlet 84, the rubber plate 83 is reset under the action of the spring 82, the rubber plate 83 can accept the next ejection movement of the sliding rod 7, and then the electric telescopic rod 54 can repeatedly eject and reset the rubber plate 83 when repeatedly ejecting and returning, so that the dust collection cavity 8 can repeatedly exhaust the processing box 3, and further the dust collection cavity 8 can continuously collect dust in the processing box 3.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411347239.6A CN119406506A (en) | 2024-09-26 | 2024-09-26 | A method for preparing low-carbon cement |
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| CN202411347239.6A CN119406506A (en) | 2024-09-26 | 2024-09-26 | A method for preparing low-carbon cement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120001518A (en) * | 2025-02-21 | 2025-05-16 | 中国检验认证集团河北有限公司 | A coal sample iron removal device used in an ash content online detection system |
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- 2024-09-26 CN CN202411347239.6A patent/CN119406506A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120001518A (en) * | 2025-02-21 | 2025-05-16 | 中国检验认证集团河北有限公司 | A coal sample iron removal device used in an ash content online detection system |
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