CN101172788A - Method for producing steel-scoria and mine-scoria cement by using steel-scoria ball milled waste mud - Google Patents
Method for producing steel-scoria and mine-scoria cement by using steel-scoria ball milled waste mud Download PDFInfo
- Publication number
- CN101172788A CN101172788A CNA2007101139134A CN200710113913A CN101172788A CN 101172788 A CN101172788 A CN 101172788A CN A2007101139134 A CNA2007101139134 A CN A2007101139134A CN 200710113913 A CN200710113913 A CN 200710113913A CN 101172788 A CN101172788 A CN 101172788A
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- China
- Prior art keywords
- slag
- cement
- steel
- steel slag
- tailing slurry
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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.)
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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
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a production method of steel slag mud slag cement and applying the steel slag ball trail cement in the steel slag mud slag cement. The method comprises the steps as follows: firstly, the steel slag ball trail cement with high water content is dried and dehydrated through heat treatment so as to lower the water content of the steel slag trail cement to be below 4 percent; broken steel slag trail cement is delivered to a ball mill to have powder milling and silicate clinker, blast furnace slag and natural gypsum are matched according to a certain proportion then are mixed in a mixer, thereby producing the steel slag scoria cement of different labels. Adopting the solid castoff of steel enterprises effectively, the invention changes the waste into treasure by a simple production art. The production cost of cement is remarkably reduced.
Description
Technical field
The utility model relates to a kind of method of utilizing steel slag ball-milling tail mud to produce dross slag cement, is a new invention that belongs to building materials field, particularly relates to the method that dross slag cement is produced.
Background technology
Slag is the byproduct that produces in iron and steel enterprise's steelmaking process, the overwhelming majority is a bessemer furnace slag, at present, because the bessemer furnace slag overwhelming majority of domestic each big steel company is still taked extensive wet processing mode, be after red heat slag economy-combat shrend is cleaved into the piece slag, send the fragmentation of slag field, magnetic separation and screening, tailings after the magnetic separation is under iron-holder (TFe content about 20%) condition with higher, except that small portion is used for production steel-making slag powder preparation cement, most of tailings then is used to build the road with the landfill soil etc., not only waste resource, and contaminate environment.The ferromagnetic material that contains that generally contains 5%～9% metallic iron and 14%～20% in the bessemer furnace slag.Iron And Steel Industry adopts the broken bessemer furnace slag of the whole bag of tricks both at home and abroad at present, to extract iron and the ferromagnetic material in the slag, recycles as iron-smelting raw material.Generalized case, broken lumpiness is littler, it is also higher with the ratio that contains ferromagnetic material to extract metallic iron, for this reason, domestic part iron enterprise adopt the wet ball grinding technology to the less slag of granularity grind, washing, magnetic separation handle, contain ferrous components in the recovery slag as much as possible, produce grain steel and aluminium powder, also produce a large amount of slag mud simultaneously.If do not take the effective technology measure that slag mud is rationally utilized, a large amount of mud will cause mud to environment, take a large amount of soils simultaneously, will be very unfavorable to the cleaner production and the environment protection of iron and steel enterprise.Up to now, the steel mill that domestic employing ball milling production line advanced treatment slag tailings reclaims the slag steel seldom, its steel slag tailing slurry all is used to produce non-burning brick or building is laid bricks, owing to be subjected to the restriction of production cost and selling market, runs at a loss substantially.Therefore, this steel slag tailing slurry awaits obtaining development and use in other field.
Dross slag cement is that slag, blast-furnace slag, cement clinker and exciting agent are carried out a kind of cement that proportioning is produced according to certain ratio, Chinese patent file CN1083451 (application number 92109619.4) discloses a kind of steel slag cement and production method thereof, with slag, water-granulated slag is aggregate, with the cement clinker is filler, add exciting agent CCO2, through mixing, stirring, the levigate steel slag cement of producing, high grade can reach more than the 425#, and low grade is 275# and 225#.But owing to contain higher free calcium oxide and magnesium oxide in the slag, have influence on the volume stability of steel slag cement, cause steel slag cement to be difficult to obtain the extensive approval in market.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of steel slag tailing slurry slag cement and utilize steel slag ball-milling tail mud to produce the method for dross slag cement.
Summary of the invention
The present invention discovers, the tail mud that slag produces after the ball milling washing, except that iron-holder reduced, other main components were compared with slag and are changed not quite, and ball milling tail mud is after washing is handled, and free calcium oxide wherein and magnesium oxide major part obtain clearing up and generated Ca (OH)
2And Mg (OH)
2, make its influence reduce significantly to the volume stability of dross slag cement.And the scholar of domestic building materials field thinks, steel slag tailing slurry after wet ball grinding is handled, its chemically reactive and hydraulically active all have reduction largely, be not suitable for the building material product of production high added value, only be suitable for producing that building is laid bricks and non-burning brick etc., this not only limits the application of steel slag tailing slurry greatly, and the value of slag does not obtain maximum using yet.Domestic do not see so far steel slag ball-milling tail mud is successfully applied to the report that dross slag cement is produced.The present invention successfully is used for manufacture of cement with steel slag ball-milling tail mud first, and the water content of steel slag ball-milling tail mud is higher, about 20%, before being applied to manufacture of cement, needs it is carried out drying and dewatering and break process.
Detailed Description Of The Invention
Technical scheme of the present invention is as follows:
One, steel slag tailing slurry slag cement, its raw material is formed as follows by weight percentage:
Steel slag tailing slurry 20%～40%, blast-furnace slag 35%～45%, portland cement clinker 20%～30%, plaster of paris 5%-6%.
The described steel slag tailing slurry mud that to be bessemer furnace slag grind, wash, produced after selecting iron through ball mill by wet process, and through the heat-treated aqueous amount below 4%.
Two, the preparation method of steel slag tailing slurry slag cement
The preparation method of steel slag tailing slurry slag cement of the present invention, step is as follows:
(1) steam that utilizes the iron and steel enterprise waste heat boiler to produce is heat-treated 100 ℃ of-120 ℃ of temperature the hygrometric state steel slag tailing slurry as thermal source, and the water content that makes steel slag tailing slurry is below 4%, and the bulk gypsum is crushed to below the 10mm; Steel slag tailing slurry after the fragmentation is sent into ball mill carry out grinding, being milled to Blain specific surface is 450-470m
2/ kg;
(2) portland cement clinker, blast-furnace slag and the plaster of paris are milled to Blain specific surface 450-470m respectively
2/ kg;
(3) will press following weight ratio batching through step (1) steel slag tailing slurry of handling and portland cement clinker, blast-furnace slag and the plaster of paris handled through step (2): steel slag tailing slurry 20%～40%, blast-furnace slag 35%～45%, portland cement clinker 20%～30%, plaster of paris 5%-6%, mixing in mixing tank gets final product.
Above gained steel slag tailing slurry slag cement can dispatch from the factory after packing, check.Method of the present invention can be produced the dross slag cement of 325# or 425# label.
Excellent results compared with prior art of the present invention is as follows:
The present invention is successfully applied to steel slag ball-milling tail mud the production of dross slag cement first; under the prerequisite that does not influence the cement mechanical strength; eliminate the detrimentally affect of free calcium oxide to the cement volume stability; production reaches 325# and the 425# dross slag cement that GB requires; widen the Application Areas of steel slag tailing slurry, improve the comprehensive utilization value of steel slag tailing slurry, reduce the production cost of dross slag cement; develop a circular economy the protection environment.
The dross slag cement that the present invention produced, because steel slag tailing slurry free calcium oxide content is low, the volume stability of dross slag cement is good, given full play to simultaneously the hydraulically active of ground granulated blast furnace slag again, hydration reaction is accelerated, and carry out fully, therefore this dross slag cement mechanical strength is functional.And because this dross slag cement mechanical strength is good, microdilatancy, advantage such as water permeability resistance is good, and is corrosion-resistant, and hydration heat is low, and workability is good can satisfy most civil engineering work requirements.
The most outstanding characteristics of the present invention are efficiently to have utilized the solid waste of iron and steel enterprise, fully having reflected turns waste into wealth, the characteristics of developing a circular economy, and production technique is simple, the manufacture of cement cost significantly reduces, economic benefit, social benefit and obvious environment benefit.
Embodiment
The present invention will be further described below in conjunction with embodiment, but be not limited thereto.
The used steel slag tailing slurry mud that to be the converter steelmaking slag grind, wash, produced after selecting iron through ball mill by wet process among the embodiment; portland cement clinker is the 525# ordinary portland cement clinker; blast-furnace slag is the blast-furnace slag through the granulation Water Quenching, and the plaster of paris is common natural dihydrate gypsum.The chemical ingredients of each raw material is as shown in table 1.
Table 1 starting material chemical composition content table (mass percent %)
| Raw material | TFe | SiO 2 | CaO | MgO | Al 2O 3 | TiO 2 | SO 3 |
| Blast-furnace slag | 2.03 | 28.10 | 40.32 | 8.41 | 14.00 | 0.50 | 2.20 |
| Portland cement clinker | 3.20 | 21.80 | 65.40 | 2.60 | 5.70 | 0.22 | 0.55 |
| Steel slag tailing slurry | 10.68 | 16.27 | 49.80 | 11.65 | 2.78 | 0.87 | 0.19 |
| The plaster of paris | 35.7 |
Embodiment 1: steel slag tailing slurry slag cement and preparation method thereof, and step is as follows:
(1) steam that utilizes the iron and steel enterprise waste heat boiler to produce is heat-treated 105 ℃ of temperature the hygrometric state steel slag tailing slurry as thermal source, and the water content that makes steel slag tailing slurry is about 3%, and the bulk gypsum is crushed to below the 10mm; Steel slag tailing slurry after the fragmentation is sent into ball mill carry out grinding, being milled to Blain specific surface is 460m
2/ kg;
(2) portland cement clinker, blast-furnace slag and the plaster of paris are milled to Blain specific surface 460m respectively
2/ kg;
(3) will prepare burden by following weight ratio through steel slag tailing slurry, portland cement clinker, blast-furnace slag and the plaster of paris of step (1) and (2) processing: steel slag tailing slurry 40%, blast-furnace slag 35%, portland cement clinker 20%, the plaster of paris 5%, mixing in mixing tank gets final product.Product performance are listed in the table 2.
Embodiment 2-6: the preparation method is with embodiment 1, and different is that the raw material weight ratio has nothing in common with each other, and concrete consumption is listed in the table 2, and product performance see Table 2.
Table 2 steel slag tailing slurry slag cement application example Performance Detection data
| Embodiment | Prescription (weight %) | Time of coagulation (mins) | 7d intensity (MPa) | 28d intensity (MPa) | Stability (Lei Shi method mm) | ||||||
| Portland cement clinker | Steel slag tailing slurry | Blast-furnace slag | The plaster of paris | ||||||||
| Initial set | Final set | Anti-folding | Resistance to compression | Anti-folding | Resistance to compression | ||||||
| 1 | 20 | 40 | 35 | 5 | 215 | 391 | 3.25 | 17.07 | 5.64 | 37.62 | 1.4 |
| 2 | 20 | 35 | 40 | 5 | 209 | 387 | 3.42 | 18.54 | 5.80 | 39.48 | 1.2 |
| 3 | 25 | 35 | 35 | 5 | 202 | 372 | 3.76 | 19.87 | 6.15 | 41.31 | 1.2 |
| 4 | 25 | 30 | 40 | 5 | 190 | 366 | 4.19 | 21.54 | 6.83 | 43.72 | 1.3 |
| 5 | 30 | 25 | 40 | 5 | 183 | 353 | 4.42 | 22.06 | 7.43 | 45.36 | 1.1 |
| 6 | 30 | 20 | 45 | 5 | 174 | 344 | 4.86 | 22.53 | 8.24 | 46.23 | 1.0 |
The detection method of product performance is by international standard in the table 2.
Claims (3)
1. a steel slag tailing slurry slag cement is characterized in that, raw material is formed as follows by weight percentage:
Steel slag tailing slurry 20%～40%, blast-furnace slag 35%～45%, portland cement clinker 20%～30%, plaster of paris 5%-6%;
The described steel slag tailing slurry mud that to be bessemer furnace slag grind, wash, produced after selecting iron through ball mill by wet process, and through the heat-treated aqueous amount below 4%.
2. the preparation method of a steel slag tailing slurry slag cement, step is as follows:
(1) steam that utilizes the iron and steel enterprise waste heat boiler to produce is heat-treated 100 ℃ of-120 ℃ of temperature the hygrometric state steel slag tailing slurry as thermal source, and the water content that makes steel slag tailing slurry is below 4%, and the bulk gypsum is crushed to below the 10mm; Steel slag tailing slurry after the fragmentation is sent into ball mill carry out grinding, being milled to Blain specific surface is 450-470m
2/ kg;
(2) portland cement clinker, blast-furnace slag and the plaster of paris are milled to Blain specific surface 450-470m respectively
2/ kg;
(3) will prepare burden by following weight ratio through steel slag tailing slurry, portland cement clinker, blast-furnace slag and the plaster of paris of step (1) and (2) processing: steel slag tailing slurry 20%～40%, blast-furnace slag 35%～45%, portland cement clinker 20%～30%, plaster of paris 5%-6%, mixing in mixing tank gets final product.
3. the preparation method of steel slag tailing slurry slag cement as claimed in claim 1 is characterized in that products obtained therefrom is the dross slag cement of 325# or 425# label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101139134A CN100545115C (en) | 2007-10-17 | 2007-10-17 | Utilize steel slag tailing slurry slag cement of steel slag ball-milling tail mud production and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101139134A CN100545115C (en) | 2007-10-17 | 2007-10-17 | Utilize steel slag tailing slurry slag cement of steel slag ball-milling tail mud production and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172788A true CN101172788A (en) | 2008-05-07 |
| CN100545115C CN100545115C (en) | 2009-09-30 |
Family
ID=39421576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101139134A Expired - Fee Related CN100545115C (en) | 2007-10-17 | 2007-10-17 | Utilize steel slag tailing slurry slag cement of steel slag ball-milling tail mud production and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100545115C (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020079A1 (en) * | 2008-08-22 | 2010-02-25 | Tan Jilin | Sewage sludge cement and preparation thereof |
| CN101544480B (en) * | 2009-04-28 | 2011-08-03 | 莱芜钢铁集团有限公司 | Admixture of active powder of ball milling steel slag tailing slurry and application thereof in preparing concrete |
| CN102180613A (en) * | 2011-03-10 | 2011-09-14 | 济南鲍德炉料有限公司 | Steel slag composite powder and preparation method thereof |
| CN102658237A (en) * | 2012-05-18 | 2012-09-12 | 北京科技大学 | Method for extraction of metal iron from steel tailings and comprehensive utilization of tail mud |
| CN104649703A (en) * | 2015-02-12 | 2015-05-27 | 武汉钢铁(集团)公司 | Method for producing ceramsite from steelmaking slag washing ball-milling mud |
| CN104724958A (en) * | 2014-12-05 | 2015-06-24 | 武汉钢铁(集团)公司 | Modified treatment method for desulphurized, deslagged and washed tail mud of molten iron |
| CN105110742A (en) * | 2015-08-13 | 2015-12-02 | 杨斌 | Environmental-friendly building mortar material and preparation method therefor |
| CN106467368A (en) * | 2015-08-18 | 2017-03-01 | 武汉科技大学 | A kind of slag cement |
| CN108147756A (en) * | 2016-12-02 | 2018-06-12 | 张记飞 | A kind of materials for wall of anti-electromagnetic radiation |
| CN108751825A (en) * | 2018-08-21 | 2018-11-06 | 莱芜钢铁集团有限公司 | Polymer-modified cement mortar and preparation method thereof and application method |
| CN109437616A (en) * | 2018-12-18 | 2019-03-08 | 西安建筑科技大学 | A kind of method and system preparing cement using municipal sludge |
| CN110540397A (en) * | 2019-08-27 | 2019-12-06 | 江苏博拓新型建筑材料有限公司 | anti-cracking energy-saving heat-insulating aerated concrete block and preparation method thereof |
| CN111454006A (en) * | 2020-04-27 | 2020-07-28 | 迁安威盛固废环保实业有限公司 | Gel material, concrete prepared from gel material and preparation method of concrete |
| CN112299733A (en) * | 2020-10-20 | 2021-02-02 | 徐州成瑞建筑科技研究院有限公司 | Method for stably and safely eliminating poor stability of hot splashing steel slag aggregate by acid washing and cleaning system |
| CN112374777A (en) * | 2020-12-03 | 2021-02-19 | 广西鱼峰水泥股份有限公司 | Cement using stainless steel slag tail mud as mixed material and preparation method thereof |
| CN112390549A (en) * | 2020-12-03 | 2021-02-23 | 广西鱼峰水泥股份有限公司 | Composite cement of stainless steel slag tailing mud and slag and preparation method thereof |
| CN115557718A (en) * | 2022-11-28 | 2023-01-03 | 新源县渣宝环保技术有限公司 | Method for calcining flue gas desulfurization gypsum by using converter steel slag |
-
2007
- 2007-10-17 CN CNB2007101139134A patent/CN100545115C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020079A1 (en) * | 2008-08-22 | 2010-02-25 | Tan Jilin | Sewage sludge cement and preparation thereof |
| CN101544480B (en) * | 2009-04-28 | 2011-08-03 | 莱芜钢铁集团有限公司 | Admixture of active powder of ball milling steel slag tailing slurry and application thereof in preparing concrete |
| CN102180613A (en) * | 2011-03-10 | 2011-09-14 | 济南鲍德炉料有限公司 | Steel slag composite powder and preparation method thereof |
| CN102180613B (en) * | 2011-03-10 | 2012-09-05 | 济南鲍德炉料有限公司 | Steel slag composite powder and preparation method thereof |
| CN102658237A (en) * | 2012-05-18 | 2012-09-12 | 北京科技大学 | Method for extraction of metal iron from steel tailings and comprehensive utilization of tail mud |
| CN104724958A (en) * | 2014-12-05 | 2015-06-24 | 武汉钢铁(集团)公司 | Modified treatment method for desulphurized, deslagged and washed tail mud of molten iron |
| CN104649703A (en) * | 2015-02-12 | 2015-05-27 | 武汉钢铁(集团)公司 | Method for producing ceramsite from steelmaking slag washing ball-milling mud |
| CN104649703B (en) * | 2015-02-12 | 2016-06-29 | 武汉钢铁(集团)公司 | Utilize the method that converter slag washing ball milling mud produces haydite |
| CN105110742A (en) * | 2015-08-13 | 2015-12-02 | 杨斌 | Environmental-friendly building mortar material and preparation method therefor |
| CN106467368A (en) * | 2015-08-18 | 2017-03-01 | 武汉科技大学 | A kind of slag cement |
| CN108147756A (en) * | 2016-12-02 | 2018-06-12 | 张记飞 | A kind of materials for wall of anti-electromagnetic radiation |
| CN108751825A (en) * | 2018-08-21 | 2018-11-06 | 莱芜钢铁集团有限公司 | Polymer-modified cement mortar and preparation method thereof and application method |
| CN109437616A (en) * | 2018-12-18 | 2019-03-08 | 西安建筑科技大学 | A kind of method and system preparing cement using municipal sludge |
| CN109437616B (en) * | 2018-12-18 | 2021-04-13 | 西安建筑科技大学 | Method and system for preparing cement by using municipal sludge |
| CN110540397A (en) * | 2019-08-27 | 2019-12-06 | 江苏博拓新型建筑材料有限公司 | anti-cracking energy-saving heat-insulating aerated concrete block and preparation method thereof |
| CN110540397B (en) * | 2019-08-27 | 2021-10-29 | 江苏博拓新型建筑材料有限公司 | Anti-cracking energy-saving heat-insulating aerated concrete block and preparation method thereof |
| CN111454006A (en) * | 2020-04-27 | 2020-07-28 | 迁安威盛固废环保实业有限公司 | Gel material, concrete prepared from gel material and preparation method of concrete |
| CN112299733A (en) * | 2020-10-20 | 2021-02-02 | 徐州成瑞建筑科技研究院有限公司 | Method for stably and safely eliminating poor stability of hot splashing steel slag aggregate by acid washing and cleaning system |
| CN112374777A (en) * | 2020-12-03 | 2021-02-19 | 广西鱼峰水泥股份有限公司 | Cement using stainless steel slag tail mud as mixed material and preparation method thereof |
| CN112390549A (en) * | 2020-12-03 | 2021-02-23 | 广西鱼峰水泥股份有限公司 | Composite cement of stainless steel slag tailing mud and slag and preparation method thereof |
| CN115557718A (en) * | 2022-11-28 | 2023-01-03 | 新源县渣宝环保技术有限公司 | Method for calcining flue gas desulfurization gypsum by using converter steel slag |
Also Published As
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|---|---|
| CN100545115C (en) | 2009-09-30 |
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