CN103265189A - Method for improving stability of steel slag and maintaining high gelation activity - Google Patents
Method for improving stability of steel slag and maintaining high gelation activity Download PDFInfo
- Publication number
- CN103265189A CN103265189A CN2013102138100A CN201310213810A CN103265189A CN 103265189 A CN103265189 A CN 103265189A CN 2013102138100 A CN2013102138100 A CN 2013102138100A CN 201310213810 A CN201310213810 A CN 201310213810A CN 103265189 A CN103265189 A CN 103265189A
- Authority
- CN
- China
- Prior art keywords
- steel
- agent
- slag
- parts
- steel slag
- Prior art date
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 title claims abstract description 10
- 238000001879 gelation Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000009628 steelmaking Methods 0.000 claims description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- -1 sulfonated melamine compound Chemical class 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- LCRMGUFGEDUSOG-UHFFFAOYSA-N naphthalen-1-ylsulfonyloxymethyl naphthalene-1-sulfonate;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(OCOS(=O)(=O)C=3C4=CC=CC=C4C=CC=3)=O)=CC=CC2=C1 LCRMGUFGEDUSOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000029087 digestion Effects 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 description 5
- 239000002956 ash Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 241000876852 Scorias Species 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for improving stability of steel slag and maintaining high gelation activity. The method adopts a digestion agent and a dispersing agent to treat and modify steel slag powder at 50-60 DEG C. the method can be used for improving the stability of the steel slag, maintaining the high gelation activity, increasing the dosage of the steel slag in cement, and lowering the production cost.
Description
Technical field
The present invention relates to a kind of method of improving steel slag stability, keeping high gelation activity, be specially to utilize and clear up agent, dispersion agent, pass through wet heat treatment, when improving steel slag stability, keep high gelling, the be untreated problem of the slag gelling property that stability is bad and other modified techniques may the cause forfeiture that slag causes because of volumetric expansion in cement of solution realizes the high materialization utilization of slag.
Background technology
Slag is the waste residue that produces in the steelmaking process, generates temperature height (about 1600 ℃), and its ore deposit phase composite is similar to cement clinker, is a kind of material with greater activity.China's slag year quantum of output reached more than 100,000,000 ton in 2012.Domestic iron and steel enterprise, scientific research institution and building materials enterprise have been obtained certain progress through years of researches aspect steel slag utilization, slag successfully has been applied to fields such as building materials, road engineering, agriculture production, furnace refractory and sewage disposal.But China's slag comprehensive utilization rate is still lower, only is about 10%, mainly is treatment process and the equipment restriction that is subjected to slag, causes the calcium oxide content that dissociates in the slag too high, causes the application product volume stability bad, the requirement that does not reach Application Areas.At present, slag takies a large amount of soils, ecotope is caused certain influence still based on stacking.Therefore, the pretreatment process of slag is particularly important, and the large-scale application of slag is had considerable influence.Slag mainly carries out pre-treatment two stages: i.e. the output stage (steel mill) of slag and application stage (slag supply enterprise or building materials manufacturing enterprise).The main methods in slag output stage has hot application method, water spray cooling, slag stewing method and wheeled water quenching; The treatment process of application stage mainly contains nature and stacks method, mechanical grinding method, steam curing method etc.Simply add water treatment, can not make free calcium oxide and the abundant hydrolysis of magnesium oxide in the slag, must carry out process intensification.
The present invention clears up agent and dispersion agent in conjunction with the characteristics of slag by levigate, interpolation, and controls temperature, maintenance humidity, strengthens calcium oxide and magnesian hydration process.Simultaneously, the control treatment time, guarantee the generation calcium carbonate that makes it the least possible, be implemented in the treatment process that the application stage solves steel slag stability, keeps high gelation activity.
Summary of the invention
Pin the problems referred to above of the present invention provide a kind of method of improving steel slag stability, keeping high gelation activity.Utilize under the wet heat condition add clear up agent, dispersion agent carries out pre-treatment to ground steel slag, improves its stability, improve slag cement products in consumption.
The technical solution adopted in the present invention is: a kind of method of improving steel slag stability, keeping high gelation activity, adopt following weight fraction than component: 92～100 parts of steel-making slag powder, to clear up 5～8 parts of agent, 0.2～0.6 part of dispersion agent, water 9～14.Concrete method of modifying is: add in steel-making slag powder and stir after clearing up agent, dispersion agent and water, keep mixed material modification 48～72 hours under 50～60 ℃ of conditions.
Described steel-making slag powder is obtained through broken, dry, grinding by steel-making shrend slag, and specific surface area is 350～430m
2/ kg, free calcium oxide content are 1.5～6%, and free magnesium content is 0.5～3%.
Described to clear up agent be that the silicon ash of 6～8 parts calcium oxide, 1～2 part non-hydrate sodium metasilicate and 0.5～1 part is formed by weight fraction, is even pulverulent mixture.
Described dispersion permeate agent is one or both in sulfonated melamine compound resin and the sodium methylene bis-naphthalene sulfonate.
Beneficial effect of the present invention is: by slag is carried out pre-treatment, improve its stability, improve the consumption in cement, reduce production costs.
Embodiment
Embodiment one: make 42.5 grade composite Portland cements.
(1) slag pre-treatmentClear up agent weight and consist of 6.5 parts of calcium oxide, 1.8 parts of non-hydrate sodium metasilicates, 1 part of silicon ash.Concrete method of modifying is: stir add 5 parts of water of clearing up agent, 0.3 part of sulfonated melamine compound resin and 11 parts in 92 parts of steel-making slag powder after, keep mixed material modification 50 hours under 50～55 ℃ of conditions.
(2) cement proportion and salient featuresPortland clinker 41.5%, slag powders 10%, modified steel scoria powder 45%, desulfurated plaster 3.5%.
* annotate: adopt GBT1346-2001, sample is defeated and dispersed.
Embodiment two: make 32.5 grade composite Portland cements.
(1) slag pre-treatmentClear up agent weight and consist of 8 parts of calcium oxide, 1 part of non-hydrate sodium metasilicate, 0.5 part of silicon ash.Concrete method of modifying is: add 8 parts and stir after clearing up agent, 0.2 part of sulfonated melamine compound resin, 0.2 part of sodium methylene bis-naphthalene sulfonate, 13 parts of water in 100 parts of steel-making slag powder, keep mixed material modification 65 hours under 55～60 ℃ of conditions.
(2) cement proportion and salient featuresPortland clinker 36.5%, flyash 15%, modified steel scoria powder 50%, desulfurated plaster 3.5%.
* annotates: adopt GBT1346-2001, severe crack appears in sample.
Claims (4)
1. method of improving steel slag stability, keeping high gelation activity is characterized in that: adopt following weight fraction than component: 92～100 parts of steel-making slag powder, clear up 5～8 parts of agent, 0.2～0.6 part of dispersion agent, 9～14 parts in water; Concrete grammar is: add in steel-making slag powder and stir after clearing up agent, dispersion agent and water, keep mixed material modification 48～72 hours under 50～60 ℃ of conditions.
2. steel-making slag powder according to claim 1, it is characterized in that: obtained by slag grinding behind crushing-magnetic selection, specific surface area is 350～430 m
2/ kg, free calcium oxide content are 1.5～6%, and free magnesium content is 0.5～3%.
3. according to claim 1ly clear up agent, it is characterized in that: be that 6～8 parts calcium oxide, 1～2 part non-hydrate sodium metasilicate and 0.5～1 part silicon ash are formed by weight fraction, be even pulverulent mixture.
4. dispersion agent according to claim 1 is characterized in that: be in sulfonated melamine compound resin and the sodium methylene bis-naphthalene sulfonate one or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213810.0A CN103265189B (en) | 2013-06-03 | 2013-06-03 | Method for improving stability of steel slag and maintaining high gelation activity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213810.0A CN103265189B (en) | 2013-06-03 | 2013-06-03 | Method for improving stability of steel slag and maintaining high gelation activity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103265189A true CN103265189A (en) | 2013-08-28 |
| CN103265189B CN103265189B (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310213810.0A Expired - Fee Related CN103265189B (en) | 2013-06-03 | 2013-06-03 | Method for improving stability of steel slag and maintaining high gelation activity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103265189B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524058A (en) * | 2013-10-10 | 2014-01-22 | 河北科技大学 | Treating method for steel slag stability |
| CN103539417A (en) * | 2013-10-10 | 2014-01-29 | 遵化市中环固体废弃物综合利用有限公司 | Method for manufacturing steam-pressing bricks by using iron tailings and steel slag |
| CN105271865A (en) * | 2014-06-05 | 2016-01-27 | 镇江市船山第二水泥厂 | Cement modifier component and preparation method thereof |
| CN105885587A (en) * | 2016-06-22 | 2016-08-24 | 杨玉双 | Anti-freezing waterproof coating and preparation method thereof |
| CN115043626A (en) * | 2022-06-24 | 2022-09-13 | 华新水泥股份有限公司 | Ordinary silicate-based inorganic wear-resistant coating and preparation method thereof |
| CN115073080A (en) * | 2022-08-22 | 2022-09-20 | 平泉市岩石建筑材料有限公司 | Solid waste base concrete and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267720B2 (en) * | 2004-02-05 | 2007-09-11 | Optos Optimale Oszillationstechnick Gmbh | Method for preparing a building material |
| CN101328517A (en) * | 2008-07-25 | 2008-12-24 | 武汉钢铁(集团)公司 | Steel slag stability modifier and steel slag stability processing method |
| CN102503193A (en) * | 2011-10-24 | 2012-06-20 | 西安建筑科技大学 | Process method for preparing similar cement clinkers by treating steel slag at thermal state in way of heat preservation |
| CN102732652A (en) * | 2011-04-13 | 2012-10-17 | 许兴康 | Superfine grinding method for steel slag slurry |
| CN102875038A (en) * | 2012-10-22 | 2013-01-16 | 辽宁科技大学 | Method for removing free calcium oxide and magnesium oxide in converter steel making slag |
-
2013
- 2013-06-03 CN CN201310213810.0A patent/CN103265189B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267720B2 (en) * | 2004-02-05 | 2007-09-11 | Optos Optimale Oszillationstechnick Gmbh | Method for preparing a building material |
| CN101328517A (en) * | 2008-07-25 | 2008-12-24 | 武汉钢铁(集团)公司 | Steel slag stability modifier and steel slag stability processing method |
| CN102732652A (en) * | 2011-04-13 | 2012-10-17 | 许兴康 | Superfine grinding method for steel slag slurry |
| CN102503193A (en) * | 2011-10-24 | 2012-06-20 | 西安建筑科技大学 | Process method for preparing similar cement clinkers by treating steel slag at thermal state in way of heat preservation |
| CN102875038A (en) * | 2012-10-22 | 2013-01-16 | 辽宁科技大学 | Method for removing free calcium oxide and magnesium oxide in converter steel making slag |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524058A (en) * | 2013-10-10 | 2014-01-22 | 河北科技大学 | Treating method for steel slag stability |
| CN103539417A (en) * | 2013-10-10 | 2014-01-29 | 遵化市中环固体废弃物综合利用有限公司 | Method for manufacturing steam-pressing bricks by using iron tailings and steel slag |
| CN103539417B (en) * | 2013-10-10 | 2015-06-24 | 遵化市中环固体废弃物综合利用有限公司 | Method for manufacturing steam-pressing bricks by using iron tailings and steel slag |
| CN105271865A (en) * | 2014-06-05 | 2016-01-27 | 镇江市船山第二水泥厂 | Cement modifier component and preparation method thereof |
| CN105885587A (en) * | 2016-06-22 | 2016-08-24 | 杨玉双 | Anti-freezing waterproof coating and preparation method thereof |
| CN115043626A (en) * | 2022-06-24 | 2022-09-13 | 华新水泥股份有限公司 | Ordinary silicate-based inorganic wear-resistant coating and preparation method thereof |
| CN115073080A (en) * | 2022-08-22 | 2022-09-20 | 平泉市岩石建筑材料有限公司 | Solid waste base concrete and preparation method thereof |
| CN115073080B (en) * | 2022-08-22 | 2022-12-13 | 平泉市岩石建筑材料有限公司 | Solid waste base concrete and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103265189B (en) | 2015-02-04 |
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Granted publication date: 20150204 |