CN1358870A - Carbon containing cold consolidated globular ore capable of keeping strength from normal temp. to high temp. - Google Patents
Carbon containing cold consolidated globular ore capable of keeping strength from normal temp. to high temp. Download PDFInfo
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- CN1358870A CN1358870A CN 01135646 CN01135646A CN1358870A CN 1358870 A CN1358870 A CN 1358870A CN 01135646 CN01135646 CN 01135646 CN 01135646 A CN01135646 A CN 01135646A CN 1358870 A CN1358870 A CN 1358870A
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- carbon containing
- globular
- containing cold
- ore
- pelletizing
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 79
- 239000008188 pellet Substances 0.000 claims abstract description 38
- 238000005453 pelletization Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 230000004907 flux Effects 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims description 59
- 239000003245 coal Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000571 coke Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000004939 coking Methods 0.000 claims description 5
- 239000002802 bituminous coal Substances 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 27
- 230000009467 reduction Effects 0.000 abstract description 17
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 80
- 229910052742 iron Inorganic materials 0.000 description 40
- 238000006722 reduction reaction Methods 0.000 description 18
- 238000003723 Smelting Methods 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000002893 slag Substances 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 235000010755 mineral Nutrition 0.000 description 5
- 229910000604 Ferrochrome Inorganic materials 0.000 description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 description 4
- -1 brown iron oxide Substances 0.000 description 4
- 229940067573 brown iron oxide Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 4
- 238000005272 metallurgy Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004021 humic acid Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 239000012256 powdered iron Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000011044 quartzite Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 229910008389 Si—Al—Fe Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011335 coal coke Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- IGHXQFUXKMLEAW-UHFFFAOYSA-N iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Fe+2].[O-2] IGHXQFUXKMLEAW-UHFFFAOYSA-N 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a carbon-contained cold-bonded pellet ore capable of retaining strength from normal temp. to high temp. Said invented carbon-contained cold-bonded pellet ore is made up (wt%) 55-96% of raw material ore powder, 0-33% of carbon reducing agent, 0-25% of flux and 3-6 % of bonding agent through the processes of mixing and pelletization. SAid pellet ore can retain certain strength at normal and high temp. reduction atmosphere environment. The tests show that normal temp. compression strength is 780N/unit, high-temp. thermal, strength at 600 deg.C can be up to 1180 N/unit. It possesses higher softening point temp., generally it can be up to 1100 deg.C.
Description
One, technical field
The invention belongs to bonding, the briquetting field of metallurgical ore, relate to gold metallurgys such as adopting smelting reduction process, direct-reduction process and ore-smelting furnace method, blast-furnace smelting method and belong to the carbon containing cold consolidated globular ore capable that uses.
Two, background technology
Melting and reducing is a great novel process of field of metallurgy, its principal feature is to use mill coal as primary energy source and reductive agent, under molten state, reduce, has the advantage that briquet replacing coke, flow process are short, pollution is little, the production handiness is strong, cost is low, being the direction of following metallurgical industry development, also is the key areas that present various countries competitively research and develop.
In smelting reduction process, carbon containing cold consolidated globular ore capable is a kind of novel reduction method raw materials for metallurgy that development in recent years is got up, it has at high temperature the characteristic of autoreduction fast, compare with common unfired pellets, carbon containing cold consolidated globular ore capable Well-recovered, it is few to return mine, and does not need advantages such as presintering.
Carbon containing cold consolidated globular ore capable is that raw material breeze, coal dust or coke powder and binding agent are mixed, make through production processes such as pulverizing, briquetting, oven dry, when making unfired pellets, selection of binder is very important, its performance quality, directly affect every performance index of cold bound pellet, particularly pellet strength index.The binding agent that generally is used for unfired pellets is divided into organic binder bond and mineral binder bond two big classes basically.Wherein organic binder bond has coal tar, pitch, starch, humic acids, mud coal etc., they have cohesive strength preferably at normal temperatures, when but temperature is increased to 500 ℃, decomposition gradually along with organic binder bond, original physical strength of unfired pellets descends significantly, and breaking and Dusting under the furnace pressure effect is to such an extent as to have influence on normally carrying out of pellet ore reduction, therefore, general organic binder bond is not suitable for the use of carbon containing cold consolidated globular ore capable basically.Existing carbon containing cold consolidated globular ore capable great majority adopt mineral binder bond for example cement, wilkinite, water glass and clay or the like, are exactly to adopt water glass to use as binding agent such as CN1074714 " cold concretion high carbon content iron mineral ball group for iron-smelting ".Mineral binder bond has overcome the defective of organic binder bond pyrolytic decomposition forfeiture cohesive force, but when using mineral binder bond, also can bring some problems, and the foreign matter content of pelletizing is increased, and the slag making amount improves during reduction; Sodium in some binding agent such as the water glass etc., potassium content are too much, can produce corrosive nature to the furnace wall, are unfavorable for smelting; And the complex process of employing high-pressure steaming and cultivating manufactured cold bound pellet, the production cycle is long, has increased cost again.
Three, summary of the invention
The purpose of this invention is to provide and a kind ofly under normal temperature and high temperature reduction atmosphere, all have high compression strength, and reduce carbon containing cold consolidated globular ore capable rapidly.
For achieving the above object, carbon containing cold consolidated globular ore capable of the present invention is by the raw material breeze of 51-96%, the carbonaceous reducing agent of 0-33%, and the flux of 0-25% and the binding agent of 3-6% are formed.
Wherein, the raw material breeze that is used for blast-furnace smelting iron, fused reduction iron-smelting and sponge iron has raw materials such as fine iron breeze, iron original ore powder, brown iron oxide, iron filings, steel cuttings, iron content sulfuric acid ground-slag; The raw material breeze that is used for ferromanganese smelting has manganese original ore powder, manganic concerntrate powder etc.; The raw material breeze that is used to smelt ferrochrome has chromite ore fine, chromogen breeze etc.; The raw material breeze that is used for smelting duriron has quartz powder, glass disintegrating slag and powdered iron ore, steel cuttings etc.; The raw material breeze that is used for smelting Si-Al-Fe alloy has high-aluminium vanadine and quartz powder, colliery powder, spoil powder and powdered iron ore, steel cuttings etc.; The breeze that is used to smelt silicomanganese has manganese original ore powder, manganic concerntrate powder and quartz powder, glass disintegrating slag etc.
Carbonaceous reducing agent is selected one or more in hard coal, bituminous coal, coking coal, coke and the semicoke for use.
The flux that adds in the pelletizing is one or more the mixture in Wingdale, rhombspar, the serpentine.
The binding agent that uses in the carbon containing cold consolidated globular ore capable of the present invention is mixed by the soda ash of the coal slime of the battie of the spoil of the weathered coal of 35-90%, 0-35%, 0-40%, 0-15% and 8-12% and forms.Its concrete production technique is that each raw material is proportionally mixed, and removes the powdered product of grinding and processing behind the moisture.The fineness that product requirement is pulverized should guarantee partly to reach more than 90% of all prods less than 200 purposes.
The manufacture method of concrete carbon containing cold consolidated globular ore capable is as follows:
At first, add the water that .1-5 doubly measures in binding agent, stir, warming while stirring to 100 ℃ is incubated stand-by after 40-60 minute.
Then, raw material breeze, carbonaceous reducing agent and flux separated pulverizing is powdered, require should account for more than 50% of total component less than 200 purposes composition.
The raw material breeze, carbonaceous reducing agent and the flux that crush are mixed stirring fully with dilution binding agent well in proportion, can use horizontal mixer during mixing, also can use post-type mixer, the use that perhaps the two is together in series stirs the material thorough mixing as long as can reach.
The material that mixes is admitted to briquetting workshop section and makes ball, usually, can adopt machineries such as roller pressure shaper or stamping machine to carry out pressure forming and make ball, also can adopt balling disc to roll and make ball.When applying pressure moulding pellet forming process, amount of water in the binding agent can be less, the water that general interpolation 1-2 doubly measures, and when adopting balling disc to make ball, then need material wetter relatively, so the interpolation water yield in the binding agent should increase to 2-5 times, but water content is no more than 15% in the pelletizing that should guarantee to cause, otherwise the carbon containing cold consolidated globular ore capable of manufacturing will be difficult to moulding because water content is higher.
The carbon containing cold consolidated globular ore capable of making must could use as raw materials for metallurgy after super-dry dewaters.Drying can adopt continuous tunnel like drying kiln to carry out, and also can adopt continuously or the intermittent type baking room is dried pelletizing, and temperature remains on 100-300 ℃ when requiring oven dry.Carbon containing cold consolidated globular ore capable of the present invention can also adopt nature to dry or the air dried mode is carried out drying treatment.The carbon containing cold consolidated globular ore capable of drying, water content is generally less than 3%.
Not moulding breeze that produces in the briquetting process and the breeze that produces in reduction process all can join in the material as the powder of returning mine, and make pelletizing once more, carry out cycling and reutilization, to save resource.
The present invention can adjust the proportion scale of carbon containing cold consolidated globular ore capable at different Metal smelting requirement and characteristics, to adapt to the demand of various processes.For example: strengthen or reduce the add-on of carbonaceous reducing agent, can correspondingly improve or reduce the softening point temperature of carbon containing cold consolidated globular ore capable.Equally, can also realize the purpose that the pellet softening point temperature improves or reduces by the amount of allocating into of spoil or battie in raising or the minimizing binding agent.
The present invention can carry out washing or dry separation to weathered coal at different Metal smelting requirement and characteristics, with the carbon content in the suitable raising binding agent.It is identical with the method for making binding agent without the weathered coal of choosing that weathered coal after the choosing is made the binding agent method.
Compare with existing carbon containing cold consolidated globular ore capable, the topmost characteristics of the present invention are to guarantee that carbon containing cold consolidated globular ore capable all keeps certain compression strength from normal temperature to high temperature.The general carbon containing cold consolidated globular ore capable that adopts pressure molding to make, normal temperature ultimate compression strength＞780N/, 1050 ℃ of following high temperature hot strength keep more than 780-1000N/; Both having made is to adopt disk to make the carbon containing cold consolidated globular ore capable of ball manufactured, and normal temperature ultimate compression strength has also reached 400N/, and high temperature hot strength can reach 780-1000N/ equally.Through Shanxi Inst. of Coal Chemistry, Chinese Academy of Sciences carbon containing cold consolidated globular ore capable of the present invention is tested, normal temperature ultimate compression strength 780N/, the high temperature hot strength in the time of 600 ℃ reaches 1180N/.Test under the reducing atmosphere in the three Sheng coking JK89 of the company limited Formed Coke Furnace fire holes of Jiexiu, 850 ℃ were carried out 4 hours, and pelletizing has still kept original intensity.
Carbon containing cold consolidated globular ore capable of the present invention can both keep certain intensity from normal temperature to high temperature, with employed binding agent direct relation is arranged.The binding agent that is adopted among the present invention is the compound binding agent of a kind of organic-inorganic based on weathered coal, in the time of below normal temperature to 500 ℃, organism in the binding agent and breeze have good affinity interaction, and the organism in the binding agent has played the main effect that keeps pelletizing ultimate compression strength; In the time of 850 ℃-1100 ℃, the organism in the binding agent has been thermal decomposited basically, and at this moment, the inorganics in the binding agent is SiO especially
2And Al
2O
3But good affinity is arranged, played the main effect that keeps pelletizing to have high temperature hot strength again with breeze; Between 500 ℃-850 ℃, because the poor activity of weathered coal, oxidation rate is slower than coal, thereby postponed the organic oxygenolysis time in the binding agent, make inorganics can be connected organism and play cohesive action, guaranteed the rising along with temperature, the binding agent in the pelletizing alternately plays cohesive action, has realized all keeping to the high temperature carbon containing cold consolidated globular ore capable from normal temperature the continuous transition of intensity.
Another characteristics of carbon containing cold consolidated globular ore capable of the present invention are that the reduction rate of pelletizing is fast.For general unfired pellets, the restricted link that influences the pelletizing reduction rate is the velocity of diffusion of reducing atmosphere to pelletizing inside.And for carbon containing cold consolidated globular ore capable, because its autoreduction reaction at high temperature, with compare with CO gas reduction lump ore or ore agglomerates, solid carbon dust and metal oxide powder have been increased under hot conditions in the direct reductive action of the thermodiffusion of pelletizing inside, directly reduce thus at the inner generation of pelletizing CO, and with metal oxide, and the long-pending increase of comparing hundreds and thousands of times with traditional method of the ratio of reaction performance, therefore reduction reaction speed, the CO of its generation and CO have been accelerated
2Be diffused in the inner pressure that produces of pelletizing by pelletizing inside to the outside, accelerated the reduction reaction speed of pelletizing inside, CO and CO
2When from inside to outside spraying or overflowing, in pelletizing, produce gas passage again, thereby can also promote the diffusion of reducing gas, further accelerated the reduction rate of pelletizing to pelletizing inside.
The speed of pelletizing reduction rate and the softening temperature of pelletizing have direct relation, if the pellet softening point temperature is low, pelletizing just begins bonding before not reducing fully, can stop up the gas passage on the pelletizing, influence the velocity of diffusion of reducing gas, thereby influence the reduction rate of pellet.The softening temperature of carbon containing cold consolidated globular ore capable of the present invention has had significantly and to have improved, bring up to existing 1100 ℃ from 900 ℃ of general unfired pellets, thus guaranteed pellet under comparatively high temps the high speed reduction and needn't worry the bonding of pelletizing.Therefore, the raising of carbon containing cold consolidated globular ore capable softening temperature of the present invention makes pellet reducing under higher temperature under the inadherent prerequisite, has further improved the reduction rate of carbon containing cold consolidated globular ore capable.
Through Taiyuan Iron ﹠ Steel Corp's steel research the cold bonded iron pellet metallurgical performance of carbon containing 3.13% of the present invention is tested, its loading softening performance is: 1050 ℃ of softening beginning temperature, 1325 ℃ of softening finishing temperatures, between the softened zone 275 ℃; Melt-dropping property is good, and pressure reduction begins 1360 ℃ of degree of intensification, begins to drip 1480 ℃ of temperature, interval 120 ℃ of molten drop.
The binding agent that is adopted among the present invention is an important assurance that can realize the object of the invention.After testing, various chemical composition contents are as shown in table 1 in the binding agent of the present invention's employing:
Table 1 binding agent chemical ingredients is formed table
| Composition | Carbon containing (FC) | Humic acids (HA) | Na 2CO 3 | ??SiO 2 | ??Al 2O 3 |
| Content (%) | ??30-50 | ????15-30 | ??8-10 | ??6-20 | ??6-20 |
| Composition | ??S | ????P | ??CaO | ??MgO | ??TiO 2 |
| Content (%) | ??＜1 | ????＜0.08 | ??＜3 | ??＜3 | ??＜0.5 |
As can be seen from Table 1, contain the C of 30-50% in the binding agent of the present invention, so high carbon content is that mineral binder bond is incomparable.Therefore, binding agent of the present invention had both played the cohesive action to pellet, very helped the reduction of pellet again, can accelerate the reduction rate of pellet, reduced coke ratio, saved a large amount of energy.
In the binding agent among the present invention, S, P, CaO, MgO, TiO
2Deng detrimental impurity content seldom, also very little for the influence of unfired pellets quality product, can improve the quality product in cold fixed ball ore deposit.
Because carbon content is very high in the binding agent, ash is little, and the slag making amount in smelting production process has seldom only increased the slag of 1.5%-3%.
The present invention directly allocates the flux breeze in carbon containing cold consolidated globular ore capable, the add-on of flux breeze is than using lump stone to reduce greatly directly into the stove usage quantity, can reduce the Wingdale amount of allocating into 30-50% when for example smelting iron, both can save energy, improve throughput, can improve the quality of products again.
Four, embodiment
Embodiment 1-embodiment 18 utilizes fine iron breeze to produce the application example of carbon containing cold consolidated iron ball nodulizing, and the raw material amount of allocating among each embodiment is as shown in table 2.
Table 2 fine iron breeze is produced carbon containing cold consolidated iron ball nodulizing and is allocated scale into
Unit: %
| The embodiment numbering | Fine iron breeze | Pulverized anthracite | Coke powder | Semicoke | Bituminous coal | Coking coal | Limestone powder | Binding agent |
| Embodiment 1 | ????75 | ????5 | ????5 | ????0 | ????0 | ????0 | ????10 | ????5 |
| Embodiment 2 | ????79 | ????0 | ????10 | ????0 | ????0 | ????0 | ????6 | ????5 |
| Embodiment 3 | ????75 | ????20 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| Embodiment 4 | ????65 | ????0 | ????30 | ????0 | ????0 | ????0 | ????0 | ????5 |
| Embodiment 5 | ????65 | ????15 | ????15 | ????0 | ????0 | ????0 | ????0 | ????5 |
| Embodiment 6 | ????95 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| Embodiment 7 | ????85 | ????0 | ????0 | ????0 | ????0 | ????0 | ????10 | ????5 |
| Embodiment 8 | ????82 | ????0 | ????5 | ????0 | ????0 | ????0 | ????10 | ????3 |
| Embodiment 9 | ????70 | ????5 | ????10 | ????0 | ????0 | ????0 | ????12 | ????3 |
| Embodiment 10 | ????64 | ????10 | ????10 | ????0 | ????0 | ????0 | ????12 | ????4 |
| Embodiment 11 | ????66 | ????10 | ????10 | ????0 | ????0 | ????0 | ????10 | ????4 |
| Embodiment 12 | ????73 | ????10 | ????5 | ????0 | ????0 | ????0 | ????8 | ????4 |
| Embodiment 13 | ????58 | ????0 | ????0 | ????0 | ????0 | ????30 | ????7 | ????5 |
| Embodiment 14 | ????70 | ????0 | ????0 | ????0 | ????20 | ????0 | ????5 | ????5 |
| Embodiment 15 | ????87 | ????0 | ????0 | ????3 | ????0 | ????0 | ????5 | ????5 |
| Embodiment 16 | ????77 | ????0 | ????0 | ????0 | ????8 | ????0 | ????10 | ????5 |
| Embodiment 17 | ????78 | ????0 | ????0 | ????3 | ????3 | ????3 | ????8 | ????5 |
| Embodiment 18 | ????75 | ????0 | ????0 | ????15 | ????0 | ????0 | ????5 | ????5 |
Concrete method of producing carbon containing cold consolidated iron ball nodulizing is; Fine iron breeze, hard coal, coke, semicoke, bituminous coal, coking coal and Wingdale are pulverized respectively, crushing rear material is carried out fineness detect, when using 200 mesh sieves to sieve, screenings is qualified less than 50% pulverizing; Add the water that 1-2 doubly measures in binding agent, stir, warming while stirring to 100 ℃, in the ratio of the amount of allocating in the table 2, is mixed binding agent with the material that crushes and is used stirrer mixing stirring after 40-60 minute in insulation under this temperature, until evenly; The material that mixes enters briquetting workshop section, uses the roller pressure shaper to make ball, and the pelletizing of making is sent in the continuous tunnel like drying kiln, dries under 100-300 ℃ of temperature, makes carbon containing cold consolidated iron ball nodulizing.
Embodiment 19-embodiment 28 is Application Examples of utilizing iron original ore powder, brown iron oxide, iron and steel bits powder and iron content sulfuric acid ground-slag to produce carbon containing cold consolidated iron ball nodulizing respectively.The raw material amount of allocating among each embodiment is as shown in table 3.Table 3 iron original ore powder, brown iron oxide, iron and steel bits powder, iron content sulfuric acid ground-slag are produced carbon containing cold consolidated iron ball nodulizing and are allocated scale into
Unit: %
| The embodiment numbering | The iron original ore powder | Brown iron oxide | Iron and steel bits powder | Iron content sulfuric acid ground-slag | Hard coal | Coke | Wingdale | Binding agent |
| Embodiment 19 | ????65 | ????0 | ????0 | ????0 | ????0 | ????20 | ????10 | ????5 |
| Embodiment 20 | ????55 | ????0 | ????0 | ????0 | ????30 | ????0 | ????10 | ????5 |
| Embodiment 21 | ????0 | ????67 | ????0 | ????0 | ????20 | ????0 | ????8 | ????5 |
| Embodiment 22 | ????0 | ????69 | ????0 | ????0 | ????0 | ????20 | ????6 | ????5 |
| Embodiment 23 | ????0 | ????77 | ????0 | ????0 | ????5 | ????5 | ????8 | ????5 |
| Embodiment 24 | ????0 | ????0 | ????67 | ????0 | ????10 | ????10 | ????8 | ????5 |
| Embodiment 25 | ????0 | ????0 | ????77 | ????0 | ????10 | ????0 | ????8 | ????5 |
| Embodiment 26 | ????0 | ????0 | ????0 | ????60 | ????0 | ????20 | ????15 | ????5 |
| Embodiment 27 | ????0 | ????0 | ????0 | ????60 | ????10 | ????10 | ????15 | ????5 |
| Embodiment 28 | ????0 | ????0 | ????0 | ????60 | ????15 | ????5 | ????15 | ????5 |
Its method of producing carbon containing cold consolidated iron ball nodulizing is identical with the method that fine iron breeze is produced carbon containing cold consolidated iron ball nodulizing.
Embodiment 29-embodiment 32 utilizes the powder of returning mine to produce the application example of carbon containing cold consolidated iron ball nodulizing, and the raw material amount of allocating among each embodiment is as shown in table 4:
Table 4 powder of returning mine is produced carbon containing cold consolidated iron ball nodulizing and is allocated scale into
Unit: %
| The embodiment numbering | Fine iron breeze | The powder of returning mine | Semicoke | Wingdale | Binding agent |
| Embodiment 29 | ????53 | ????20 | ????16 | ????6 | ????5 |
| Embodiment 30 | ????51 | ????30 | ????10 | ????5 | ????4 |
| Embodiment 31 | ????33 | ????50 | ????10 | ????4 | ????3 |
| Embodiment 32 | ????0 | ????97 | ????0 | ????0 | ????3 |
Concrete method of producing carbon containing cold consolidated iron ball nodulizing is: fine iron breeze, the powder of returning mine, semicoke and limestone powder are pulverized respectively, join in advance with 2-5 times of water gaging dilution according to the amount of allocating into ratio, be warming up in 100 ℃ and the binding agent that is incubated 40-60 minute, mix, make ball with balling disc, the pelletizing of making is positioned over open-air nature down and dries to the pelletizing water yield and used less than 3% o'clock.
Embodiment 33-embodiment 37 is application examples of producing carbon containing cold consolidated ferromanganese pellet, and the raw material amount of allocating into is as shown in table 5 among each embodiment:
The carbon containing cold consolidated ferromanganese pellet of table 5 is allocated scale into
Unit: %
| The embodiment numbering | The manganese ore powder | Wingdale | Rhombspar | Coke | Hard coal | Binding agent |
| Embodiment 33 | ????65 | ????10 | ????12 | ????8 | ????0 | ????5 |
| Embodiment 34 | ????95 | ????0 | ????0 | ????0 | ????0 | ????5 |
| Embodiment 35 | ????65 | ????4 | ????6 | ????0 | ????20 | ????5 |
| Embodiment 36 | ????75 | ????4 | ????6 | ????10 | ????0 | ????5 |
| Embodiment 37 | ????78 | ????5 | ????7 | ????5 | ????0 | ????5 |
The method of producing carbon containing cold consolidated ferromanganese pellet is identical with the production method of producing carbon containing cold consolidated iron ball nodulizing.
Embodiment 38-embodiment 44 is application examples of producing carbon containing cold consolidated ferrosilicon pellet, and the amount of allocating into of raw material is as shown in table 6 among each embodiment:
The carbon containing cold consolidated ferrosilicon pellet of table 6 is allocated scale into
Unit: %
| The embodiment numbering | Quartzite | Coke | Semicoke | Hard coal | Steel cuttings | The iron original ore powder | Binding agent |
| Embodiment 38 | ????56.4 | ????0 | ????31.4 | ????0 | ????7.2 | ????0 | ????5 |
| Embodiment 39 | ????70 | ????0 | ????15 | ????0 | ????5 | ????5 | ????5 |
| Embodiment 40 | ????65 | ????20 | ????0 | ????0 | ????3 | ????8 | ????4 |
| Embodiment 41 | ????94 | ????0 | ????0 | ????0 | ????0 | ????0 | ????6 |
| Embodiment 42 | ????71 | ????0 | ????10 | ????0 | ????0 | ????14 | ????5 |
| Embodiment 43 | ????78 | ????0 | ????0 | ????5 | ????0 | ????12 | ????5 |
| Embodiment 44 | ????70 | ????0 | ????0 | ????15 | ????4 | ????6 | ????5 |
The production method of carbon containing cold consolidated ferrosilicon pellet is identical with the production method of carbon containing cold consolidated iron ball nodulizing.
Embodiment 45-embodiment 50 is application examples of producing carbon containing cold consolidated ferrochrome pellet, and the raw material amount of allocating into is as shown in table 7 among each embodiment:
The carbon containing cold consolidated ferrochrome pellet of table 7 is allocated scale into
Unit: %
| The embodiment numbering | Chromite ore fine | Wingdale | Rhombspar | Semicoke | Coke | Binding agent |
| Embodiment 45 | ????74 | ????6 | ????6 | ????8 | ????0 | ????6 |
| Embodiment 46 | ????68 | ????8 | ????6 | ????12 | ????0 | ????6 |
| Embodiment 47 | ????90 | ????0 | ????0 | ????0 | ????5 | ????5 |
| Embodiment 48 | ????69 | ????4 | ????10 | ????0 | ????12 | ????5 |
| Embodiment 49 | ????61 | ????10 | ????4 | ????0 | ????20 | ????5 |
| Embodiment 50 | ????95 | ????0 | ????0 | ????0 | ????0 | ????5 |
The production method of carbon containing cold consolidated ferrochrome pellet is identical with the production method of carbon containing cold consolidated iron ball nodulizing.
Embodiment 51-embodiment 56 is application examples of producing carbon containing cold consolidated Alsimin pellet, and the raw material amount of allocating into is shown in the table 8 among each embodiment:
The carbon containing cold consolidated Alsimin pellet of table 8 is allocated scale into
Unit: %
| The embodiment numbering | Alumine | Quartzite | Semicoke | Hard coal | Steel cuttings | Binding agent | Powdered iron ore |
| Embodiment 51 | ????62 | ????6.2 | ????23 | ????3.8 | ????5 | ????0 | |
| Embodiment 52 | ????52 | ????5 | ????30 | ????0 | ????0 | ????5 | ????8 |
| Embodiment 53 | ????59 | ????15 | ????15 | ????6 | ????5 | ????0 | |
| Embodiment 54 | ????73 | ????8 | ????8 | ????0 | ????0 | ????6 | ????5 |
| Embodiment 55 | ????53 | ????10 | ????0 | ????20 | ????0 | ????5 | ????12 |
| Embodiment 56 | ????72 | ????8 | ????10 | ????0 | ????5 | ????0 | ????5 |
The method of producing carbon containing cold consolidated Alsimin pellet is the same with producing carbon containing cold consolidated iron ball nodulizing method.
Embodiment 57-embodiment 61 is concrete application examples of binding agent used in the present invention, and concrete proportioning sees Table 9.
Table 9 binding agent proportioning table
Unit: kg
| The embodiment numbering | Weathered coal | Spoil | Battie | Coal slime | Soda ash | Add up to |
| Embodiment 57 | ??400 | ?350 | ??0 | ??150 | ??100 | ??1000 |
| Embodiment 58 | ??400 | ??0 | ??400 | ??100 | ??100 | ??1000 |
| Embodiment 59 | ??900 | ??0 | ??0 | ??0 | ??100 | ??1000 |
| Embodiment 60 | ??500 | ??200 | ??200 | ??0 | ??100 | ??1000 |
| Embodiment 61 | ??350 | ??200 | ??300 | ??50 | ??100 | ??1000 |
Its method for making is that each raw material is mixed, and pulverizes after removing moisture, makes 200 purpose powdery products.
Claims (11)
1, a kind of carbon containing cold consolidated globular ore capable is characterized in that mixing the manufacturing pelletizing by following components in weight percentage:
Raw material breeze 55-96% carbonaceous reducing agent 0-33%
Flux 0-25% binding agent 3-6%
2, carbon containing cold consolidated globular ore capable according to claim 1 is characterized in that described carbonaceous reductant is one or more in hard coal, bituminous coal, coking coal, coke, the semicoke.
3, carbon containing cold consolidated globular ore capable according to claim 1 is characterized in that described flux is one or more in Wingdale, rhombspar, the serpentine.
4, carbon containing cold consolidated globular ore capable according to claim 1 is characterized in that described binding agent is to be made by the weathered coal of 35-90%, the spoil of 0-35%, the battie of 0-40%, the coal slime of 0-15% and the soda ash mixing pulverizing of 8-12%.
5, carbon containing cold consolidated globular ore capable according to claim 4 is characterized in that each component should be crushed to less than 200 purpose components in the described binding agent to account for 90% of total component at least.
6, the method for making of the described carbon containing cold consolidated globular ore capable of claim 1, it is characterized in that in described binding agent, adding the water that 1-5 doubly measures, stir, warming while stirring to 100 ℃, be incubated after 40-60 minute, mix with raw material breeze, carbonaceous reducing agent and the flux pulverized in proportion, and mix the manufacturing pelletizing, unfired pellets is made in oven dry at last.
7, the method for making of carbon containing cold consolidated globular ore capable according to claim 6 is characterized in that described raw material breeze, and carbonaceous reducing agent and flux all should be crushed to less than 200 purpose components and account for more than 50% of total component at least.
8, the method for making of carbon containing cold consolidated globular ore capable according to claim 6 is characterized in that described manufacturing pelletizing is to use ball press that material is pressed into pelletizing.
9, according to the method for making of claim 6 or 8 described carbon containing cold consolidated globular ore capables, when it is characterized in that adopting the ball press pressed pellet, add the water that 1-2 doubly measures in the binding agent.
10, the method for making of carbon containing cold consolidated globular ore capable according to claim 6 is characterized in that described manufacturing pelletizing is to use balling disc that material is rolled onto pelletizing.
11,, when it is characterized in that adopting balling disc rolling pelletizing, add the water that 2-5 doubly measures in the binding agent according to the method for making of claim 6 or 10 described carbon containing cold consolidated globular ore capables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01135646 CN1358870A (en) | 2001-10-10 | 2001-10-10 | Carbon containing cold consolidated globular ore capable of keeping strength from normal temp. to high temp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01135646 CN1358870A (en) | 2001-10-10 | 2001-10-10 | Carbon containing cold consolidated globular ore capable of keeping strength from normal temp. to high temp. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1358870A true CN1358870A (en) | 2002-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01135646 Pending CN1358870A (en) | 2001-10-10 | 2001-10-10 | Carbon containing cold consolidated globular ore capable of keeping strength from normal temp. to high temp. |
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| CN (1) | CN1358870A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348746C (en) * | 2006-01-25 | 2007-11-14 | 武汉科技大学 | Adhesive for iron-ore pelletizing and preparing method |
| CN101649391B (en) * | 2009-06-26 | 2011-10-05 | 中冶长天国际工程有限责任公司 | Pellet preparation method |
| CN102408931A (en) * | 2011-09-30 | 2012-04-11 | 内蒙古包钢钢联股份有限公司 | Mixed fuel for blast furnace injection |
| CN102482730A (en) * | 2009-08-21 | 2012-05-30 | 新日本制铁株式会社 | Non-fired carbon-containing lump ore for blast furnace and its manufacturing method |
| CN103451348A (en) * | 2013-08-06 | 2013-12-18 | 黄兴国 | Direct reduction method for producing medium-and-low-carbon manganese-iron alloy |
| CN104561534A (en) * | 2015-01-26 | 2015-04-29 | 内蒙古包钢钢联股份有限公司 | Magnesium containing fluxed oxide pellets and preparation method thereof |
| CN105907955A (en) * | 2016-06-17 | 2016-08-31 | 武汉钢铁股份有限公司 | Inorganic binder for oxidized pellets and manufacturing method |
| CN115127916A (en) * | 2022-06-29 | 2022-09-30 | 包头钢铁（集团）有限责任公司 | Method for evaluating strength of iron ore core particles for sintering |
-
2001
- 2001-10-10 CN CN 01135646 patent/CN1358870A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348746C (en) * | 2006-01-25 | 2007-11-14 | 武汉科技大学 | Adhesive for iron-ore pelletizing and preparing method |
| CN101649391B (en) * | 2009-06-26 | 2011-10-05 | 中冶长天国际工程有限责任公司 | Pellet preparation method |
| CN102482730A (en) * | 2009-08-21 | 2012-05-30 | 新日本制铁株式会社 | Non-fired carbon-containing lump ore for blast furnace and its manufacturing method |
| CN102482730B (en) * | 2009-08-21 | 2014-07-02 | 新日铁住金株式会社 | Non-fired carbon-containing lump ore for blast furnace and its manufacturing method |
| CN102408931A (en) * | 2011-09-30 | 2012-04-11 | 内蒙古包钢钢联股份有限公司 | Mixed fuel for blast furnace injection |
| CN103451348A (en) * | 2013-08-06 | 2013-12-18 | 黄兴国 | Direct reduction method for producing medium-and-low-carbon manganese-iron alloy |
| CN104561534A (en) * | 2015-01-26 | 2015-04-29 | 内蒙古包钢钢联股份有限公司 | Magnesium containing fluxed oxide pellets and preparation method thereof |
| CN105907955A (en) * | 2016-06-17 | 2016-08-31 | 武汉钢铁股份有限公司 | Inorganic binder for oxidized pellets and manufacturing method |
| CN115127916A (en) * | 2022-06-29 | 2022-09-30 | 包头钢铁（集团）有限责任公司 | Method for evaluating strength of iron ore core particles for sintering |
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