CN1133269A - Slag composite road cement and production technology - Google Patents
Slag composite road cement and production technology Download PDFInfo
- Publication number
- CN1133269A CN1133269A CN95102324A CN95102324A CN1133269A CN 1133269 A CN1133269 A CN 1133269A CN 95102324 A CN95102324 A CN 95102324A CN 95102324 A CN95102324 A CN 95102324A CN 1133269 A CN1133269 A CN 1133269A
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- CN
- China
- Prior art keywords
- slag
- cement
- grinding
- engineering
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002893 slag Substances 0.000 title claims abstract description 61
- 239000004568 cement Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000002131 composite material Substances 0.000 title description 5
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 229910052604 silicate mineral Inorganic materials 0.000 claims abstract description 9
- 239000010881 fly ash Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011398 Portland cement Substances 0.000 claims abstract description 4
- 238000002203 pretreatment Methods 0.000 claims abstract description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 6
- 235000011128 aluminium sulphate Nutrition 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 230000036571 hydration Effects 0.000 claims description 2
- 238000006703 hydration reaction Methods 0.000 claims description 2
- 238000007885 magnetic separation Methods 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000029087 digestion Effects 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 239000010811 mineral waste Substances 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003469 silicate cement Substances 0.000 description 3
- 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 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- 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
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a cementing material used in road engineering and other building engineering-slag cement and its production process. Said slag cement is made up by using steel slag, mineral waste residue, fly ash, portland cement clinker, aluminium-contained sulfate and stability excitation agent made of silicate mineral, and making them pass through such processes of pretreatments of digestion, decomposition and magnetic selection and special grinding process, etc.. The cement produced by using said invented method has the good usability, low wear extent (less than 3.0 kg/m2) and its air shrinkage ratio for 28 days is less than 0.10%, initial setting time is 1-5 h. and final setting time is less than 8 h..
Description
A kind of gelling material and production method thereof that is used for road engineering and other civil engineering, its product are mainly used in other engineering that requires wear-resisting, corrosion resistant engineering and anti-drying shrinkage and low hydration heat requirement.
At present, the cement that is applicable to above-mentioned engineering generally adopts the cement of road silicate cement or other high grade, their production cost height, the manufacturing requirements strictness, need spend a large amount of investments for engineering constructions such as large-scale roads, on the other hand, a large amount of waste residues--the slag that steel-making produces, cause a large amount of environmental pollutions owing to usage quantity is few, the ordinary steel slag cement (GB GB13693-92) that utilizes slag production is though also there are performances such as wear resistance is good, and early strength is low, long construction period, bring bigger difficulty to use, these cement that contain slag are long general time of coagulation simultaneously, and sclerosis is slow, the use of slag performance impact cement.In addition, when using as the inertia blended material, the volume of slag seldom; And under existing grinding process condition, a large amount of slags mixes the yield and quality that also has a strong impact on the grinding machine grinding, and this all is unfavorable for handling on a large scale slag.
The objective of the invention is to develop a kind of high-wearing feature that has, be applicable to novel steel slag cement--the slag composite road cement that contains of engineering constructions such as road, and adopt effective grinding process, reach and to handle slag significantly, can not influence under the grinding machine yield and quality prerequisite again, produce early strong high, time of coagulation is normal, easy to use, cost is low, the new road cement of high abrasion resistance.
Cement of the present invention is by slag, slag, flyash, Portland clinker and contains aluminium sulfate and stable exciting agent grinding that silicate minerals constitutes mixes.Above-mentioned used slag is meant the waste residue that various method for making steel produce, and they can be open hearth slag, converter slag, electric furnace slag or oxidation sludge, reducing slag etc.The slag that is adopted according to present method generally will through clearing up, precrushing and magnetic separation, eliminate the factor leading to social instability of free calcium oxide, remove the metal oxide of metal such as iron in the slag, steel and natural instincts, to guarantee the quality and the safe handling of grinding; Slag is meant the water granulated slag that ironmaking produces; Flyash is the flying dust that power boiler burning produced; The aluminium sulfate that contains that this cement adopted is the synthetics that contains the natural mineral of aluminium, calcium, sodium, the ratio of aluminium wherein, calcium, sodium (mol ratio) is: 3～4: 3～4: 1～3, the silicate minerals that is adopted is the cured article based on water glass, the road cement that above-mentioned various raw materials can obtain to have the early-strong-fast-hard performance through grinding, mixing, homogenizing in proportion.
The slag digestion procedure that the present invention is used, adopt have insulation, digestion instrument that performance of keeping humidity is good carries out, and to clearing up water and heat up, adjust particular processing such as potential of hydrogen, clearing up in the short period of time of f-CaO reached more than 90%.Improve the grindability and the activity of slag thus greatly.For without the special slag of clearing up processing, also can be through this cement of subsequent step process for producing, but need the grinding aid etc. of admixture special use during grinding.
Cement proportion of the present invention is: slag: slag: flyash: grog: contain aluminium sulfate: silicate minerals=10～50: 10～40: 0～15: 10～30: 2～12: 1～10
The flyash that cement of the present invention adopted can replace with natural zeolite, with above-mentioned used contain aluminium sulfate and silicate minerals and be mixed in proportion after again with other raw material grinding.Be to simplify production process, also not fly ash or zeolite.
Cement of the present invention can be determined grinding process according to slag pre-treatment situation and grindability when grinding, adopt combined grinding or grinding, mode such as mixing then respectively.And a spot of special-purpose grinding aid of admixture etc., the amount of general admixture grinding aid is 0.1～0.5%, it is a kind of tensio-active agent.
Proportioning of the present invention is to determine according to the character of slag, if slag is with C
2S be main dicalcium slag then the volume of slag generally to reduce about 10%, if the composition of slag is C
3S is main high calcium slag, then can suitably improve, general slag and scoriaceous total amount can reach the 60-80% of cement total amount, and the content of vitriol and silicate minerals generally is controlled at 7-17%, the consumption of grog determines that according to the physicalies such as intensity of grog itself what label was high goes easy.
Cement of the present invention has good use properties, its wear resistance height, and abrasion loss is less than 3.0KG/M
2, 28 days contract with dry rate are less than 0.10%, and the presetting period is 1～5 hour, and final setting time was less than 8 hours.The national standard (GB13693-92) that meets road silicate cement, its intensity index reaches the standard of ordinary Portland cement 425#, can satisfy the requirement of road project fully, and price is very low, cost generally only is 1/3～2/3 of an ordinary road silicate cement.Found a valid approach for administering the slag pollution simultaneously.Have obvious social and economic benefit.
The compound slag cement for road of one of cement embodiment of the present invention for adopting the open hearth slag to produce, its proportioning (1) is:
Slag: slag: grog: vitriol: silicate minerals=45: 35: 13: 5: 2; The proportioning (2) of another group cement is: 40: 40: 13: 5: 2, and the cement physical properties of production such as following table.
Table 1 slag composite road cement performance
| Numbering | Time of coagulation | Intensity | |
| Initial set final set | Anti-folding 3d 28d | Resistance to compression 3d 28d | |
| ????1 ????2 | ????2：13????3：24 ????1：53????2：56 | ????4.6????7.3 ????4.4????7.5 | ????20.3???45.1 ????21.7???44.7 |
Wear-resisting and the shrinkage performance of table 2 slag composite road cement
| Numbering | Wear-resisting (kg/m 2) | Drying shrinkage (%) | |
| Clean slurry | Mortar | 7 days 28 days 60 days | |
| ????1 ????2 | ?0.717 ?0.875 | ?2.92 ?3.23 | ?0.026??0.071???0.085 ?0.040??0.080???0.083 |
Above-mentioned cement adopts grinding mode respectively, and with Portland clinker and the common grinding of half slag, slag, vitriol, silicate minerals and the remaining common grinding of slag mix homogenizing then and obtain product.
Claims (4)
1. a gelling material and production method that is used for road engineering and other civil engineering, its product is mainly used in and requires other engineering that wear-resisting, corrosion resistant engineering and anti-drying shrinkage are had relatively high expectations, hydration heat is lower, it is characterized in that this product (cement) be by through clear up in advance handle and magnetic separation after slag and slag, flyash, portland cement clinker, contain aluminium sulfate and the multiple material grinding of silicate minerals mixes.
2. cement as claimed in claim 1 is characterized in that slag: slag: flyash: portland cement clinker: contain aluminium sulfate: silicate=10～50: 10～40: 0～15: 10～30: 2～15: 1～10.
3. the slag in the cement as claimed in claim 1 is characterized in that this slag can be open hearth slag, converter slag, electric furnace slag and reducing slag.
4. method for production of cement as claimed in claim 1 is determined grinding or common grinding respectively according to the pre-treatment situation of slag when it is characterized in that grinding, and the grinding aid of admixture 0.1-0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95102324A CN1133269A (en) | 1995-04-04 | 1995-04-04 | Slag composite road cement and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95102324A CN1133269A (en) | 1995-04-04 | 1995-04-04 | Slag composite road cement and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1133269A true CN1133269A (en) | 1996-10-16 |
Family
ID=5074269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102324A Pending CN1133269A (en) | 1995-04-04 | 1995-04-04 | Slag composite road cement and production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1133269A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303030C (en) * | 2003-06-02 | 2007-03-07 | 同济大学 | Light geotechnical synthetic material and its preparing method |
| CN100441537C (en) * | 2005-11-25 | 2008-12-10 | 华南理工大学 | A Portland cement resistant to chlorine salt erosion |
| CN102605113A (en) * | 2012-02-29 | 2012-07-25 | 北京科技大学 | Method for modifying high-temperature steel slag by using compound materials of tailings |
| CN102838303A (en) * | 2012-09-12 | 2012-12-26 | 南宁市伟达科技有限公司 | Method for preparing cement by nickel-chromium residue |
| CN103288333A (en) * | 2012-02-23 | 2013-09-11 | 同济大学 | Modified slag compound admixture and preparation method thereof |
| CN105859230A (en) * | 2016-04-15 | 2016-08-17 | 廖引家 | Road cement |
| CN111825352A (en) * | 2019-05-31 | 2020-10-27 | 尧柏特种水泥技术研发有限公司 | Moderate heat portland cement produced by composite clinker |
-
1995
- 1995-04-04 CN CN95102324A patent/CN1133269A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303030C (en) * | 2003-06-02 | 2007-03-07 | 同济大学 | Light geotechnical synthetic material and its preparing method |
| CN100441537C (en) * | 2005-11-25 | 2008-12-10 | 华南理工大学 | A Portland cement resistant to chlorine salt erosion |
| CN103288333A (en) * | 2012-02-23 | 2013-09-11 | 同济大学 | Modified slag compound admixture and preparation method thereof |
| CN103288333B (en) * | 2012-02-23 | 2015-02-18 | 同济大学 | Modified slag compound admixture and preparation method thereof |
| CN102605113A (en) * | 2012-02-29 | 2012-07-25 | 北京科技大学 | Method for modifying high-temperature steel slag by using compound materials of tailings |
| CN102838303A (en) * | 2012-09-12 | 2012-12-26 | 南宁市伟达科技有限公司 | Method for preparing cement by nickel-chromium residue |
| CN105859230A (en) * | 2016-04-15 | 2016-08-17 | 廖引家 | Road cement |
| CN111825352A (en) * | 2019-05-31 | 2020-10-27 | 尧柏特种水泥技术研发有限公司 | Moderate heat portland cement produced by composite clinker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |