CN104016599A - Adjusting material for carrying out high temperature activation treatment on electric furnace white slag, and application thereof - Google Patents
Adjusting material for carrying out high temperature activation treatment on electric furnace white slag, and application thereof Download PDFInfo
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- CN104016599A CN104016599A CN201410216431.1A CN201410216431A CN104016599A CN 104016599 A CN104016599 A CN 104016599A CN 201410216431 A CN201410216431 A CN 201410216431A CN 104016599 A CN104016599 A CN 104016599A
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- slag
- adjusting material
- white slag
- white
- calcareous
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- 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
Abstract
The invention relates to an adjusting material for carrying out high temperature activation treatment on electric furnace white slag. The adjusting material comprises the components by weight: 0-55% of converter slag, 40-100% of calcareous material (in terms of CaO) and 0-5% of auxiliary materials. When the adjusting material is in practical use, the converter slag, the calcareous material and the auxiliary materials are mixed according to the above weight proportions to be used as the adjusting material; the adjusting material is ground into fine powder; 15-35% by weight of the adjusting material and 65-85% by weight of the white slag are mixed uniformly; the mixture is calcined, so that chemical reactions occur among components; air cool or water cool are carried out after calcination; and a calcined product is broken and ground to prepare the activated white slag powder. 28 d activity indicator is higher than 85% when Blaine specific surface area is 400-500 m<2>/kg. Mineral composition of the white slag is optimized essentially; gelatinization activity of the white slag is increased; high value-added resource utilization rate of the white slag and steel slag solid wastes is increased; and environment protection is facilitated.
Description
Technical field
The invention belongs to the technical field of electric steel furnace slag comprehensive utilization, relate to a kind of adjusting material and application thereof to the processing of electric steel furnace slag high-temperature activation, after specifically utilizing bessemer furnace slag, calcareous material and a small amount of subsidiary material to mix with white slag, calcine, make, between each component, chemical reaction occurs, from optimizing in essence the mineral composition of white slag, improve the gelation activity of white slag.
Background technology
Electric steel furnace slag refers to that in the reduction period operation of electric-arc furnace steelmaking, the slag forming while adopting the reductive agents such as carbon dust and ferrosilicon powder to carry out diffusive deoxidation is white in color after cooling efflorescence Powdered in air.Along with the development of China's furnace outer refining technology, the quantity of white slag is also at increasing year by year, and the accumulation of a large amount of white slags, not only takies a large amount of soils but also caused serious environmental pollution.The essential mineral of white slag consists of: Dicalcium Phosphate (Feed Grade) (γ-C
2s), C 12 A 7 (C
12a
7), gehlenite (C
2aS), lime feldspar (CAS
2), manganolite (C
3mS
2) etc., wherein silicate minerals has certain potential gelation activity, and therefore, white slag has good potential basis as aspects such as cement mixture or concrete admixtures.But, because the main silicate mineral phases in white slag is Dicalcium Phosphate (Feed Grade), and mainly with γ-C
2s crystal formation exists, and almost non-gelling activity, has seriously restricted white slag utilization in cement concrete as subsidiary material.Therefore, in the urgent need to a kind of new technology and method, improve the gelation activity of white slag, improve the high added value recycling rate of white slag.
Summary of the invention
For overcoming above-mentioned technical disadvantages, the invention provides a kind of adjusting material and application thereof to the processing of electric steel furnace slag high-temperature activation, after specifically utilizing bessemer furnace slag, calcareous material and a small amount of subsidiary material to mix with white slag, calcine, make, between each component, chemical reaction occurs, from optimizing in essence the mineral composition of white slag, improve the gelation activity of white slag.
The technical solution adopted for the present invention to solve the technical problems is: a kind of adjusting material to the processing of electric steel furnace slag high-temperature activation, its component and weight percent thereof are 0～55% bessemer furnace slag, 40～100% calcareous materials (in CaO) and 0～5% subsidiary material.
Utilize the application of above-mentioned adjusting material to the processing of electric steel furnace slag high-temperature activation, its processing step is: first by above-mentioned weight percent, bessemer furnace slag, calcareous material and subsidiary material are mixed as regulating material, grind to form fine powder, then mix with 65～85% white slag according to the adjusting material of weight percent 15～35%, calcine, make, between each component, chemical reaction occurs, calcine rear by air-cooled or water-cooled, broken, grinding is prepared activation white slag powder, at Blain specific surface 400～500m
2when/kg, 28d activity index is greater than 85%.
Described calcareous material is mainly Wingdale, calcite, muddy limestone, chalk and calcareous industrial residue; Subsidiary material main ingredient is fluorite.
Described calcining temperature is 1250 DEG C～1500 DEG C, and activation white slag Free CaO is less than 2%.
The beneficial effect of the inventive method is: bessemer furnace slag, calcareous material and a small amount of subsidiary material are mixed with into adjusting material; after mixing with white slag, issue biochemical reaction at high temperature action; from having optimized in essence the mineral composition of white slag; improve the gelation activity of white slag; improve the high added value recycling rate of white slag and slag solid waste simultaneously, and be conducive to environment protection.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
To an adjusting material for electric steel furnace slag high-temperature activation processing, the bessemer furnace slag that its component and weight percent thereof are 0～55%, 40～100% calcareous materials (in CaO) and 0～5% subsidiary material.
Utilize the application of above-mentioned adjusting material to the processing of electric steel furnace slag high-temperature activation, its processing step is: first by above-mentioned weight percent, bessemer furnace slag, calcareous material and subsidiary material are mixed as regulating material, grind to form fine powder, then mix with 65～85% white slag according to the adjusting material of weight percent 15～35%, calcine, make, between each component, chemical reaction occurs, calcine rear by air-cooled or water-cooled, broken, grinding is prepared activation white slag powder, at Blain specific surface 400～500m
2when/kg, 28d activity index is greater than 85%.
Described calcareous material is mainly Wingdale, calcite, muddy limestone, chalk and calcareous industrial residue; Subsidiary material main ingredient is fluorite.
Described calcining temperature is 1250 DEG C～1500 DEG C, and activation white slag Free CaO is less than 2%.
In order further to inquire into effect of the present invention, to choose white slag and the slag of Shaoguan Iron And Steel Company and test, its white slag and slag chemical composition are as follows:
Embodiment 1:
Choose and regulate the weight percent of the each component of material as follows:
Bessemer furnace slag 55%
Calcareous material (in CaO) 42%
Subsidiary material 3%
Adjusting material is mixed as following weight percent with electric steel furnace slag:
Regulate material 31%
White slag 69%
Compound is calcined at 1300 DEG C, made to regulate material and white slag generation chemical reaction; After having calcined by air-cooled carry out cooling fast; Then adopt jaw crusher to carry out fragmentation, adopt ball mill to carry out grinding, grinding to Blain specific surface is 400～500m
2/ kg.
Be mixed with gelling material by w (reference cement): w (white slag)=70%:30%, carry out glue sand performance test according to (GB/T 17671-1999) " Test method for strength of hydraulic cement mortar (ISO method) ".
Embodiment 2:
Choose and regulate the weight percent of the each component of material as follows:
Bessemer furnace slag 50%
Calcareous material (in CaO) 50%
Adjusting material is mixed as following weight percent with electric steel furnace slag:
Regulate material 33%
White slag 67%
Compound is calcined at 1300 DEG C, made to regulate material and white slag generation chemical reaction; After having calcined by air-cooled carry out cooling fast; Then adopt jaw crusher to carry out fragmentation, adopt ball mill to carry out grinding, grinding to Blain specific surface is 400～500m
2/ kg.
Be mixed with gelling material by w (reference cement): w (white slag)=70%:30%, carry out glue sand performance test according to (GB/T 17671-1999) " Test method for strength of hydraulic cement mortar (ISO method) ".
Embodiment 3:
Choose and regulate the weight percent of the each component of material as follows:
Calcareous material (in CaO) 95%
Subsidiary material 5%
Adjusting material is mixed as following weight percent with electric steel furnace slag:
Regulate material 18%
White slag 82%
Compound is calcined at 1300 DEG C, made to regulate material and white slag generation chemical reaction; After having calcined by air-cooled carry out cooling fast; Then adopt jaw crusher to carry out fragmentation, adopt ball mill to carry out grinding, grinding to Blain specific surface is 400～500m
2/ kg.
Be mixed with gelling material by w (reference cement): w (white slag)=70%:30%, carry out glue sand performance test according to (GB/T 17671-1999) " Test method for strength of hydraulic cement mortar (ISO method) ".
Embodiment 4:
Choose and regulate the weight percent of the each component of material as follows:
Calcareous material (in CaO) 97%
Subsidiary material 3%
Adjusting material is mixed as following weight percent with electric steel furnace slag:
Regulate material 24%
White slag 76%
Compound is calcined at 1300 DEG C, made to regulate material and white slag generation chemical reaction; After having calcined by air-cooled carry out cooling fast; Then adopt jaw crusher to carry out fragmentation, adopt ball mill to carry out grinding, grinding to Blain specific surface is 400～500m
2/ kg.
Be mixed with gelling material by w (reference cement): w (white slag)=70%:30%, carry out glue sand performance test according to (GB/T 17671-1999) " Test method for strength of hydraulic cement mortar (ISO method) ".
The Main physical performance of above-mentioned four examples activation white slag powder and former white slag powder is compared as follows:
Above-mentioned subordinate list explanation utilizes the present invention bessemer furnace slag, calcareous material and a small amount of subsidiary material can be mixed with into adjusting material; after mixing with white slag, issue biochemical reaction at high temperature action; from having optimized in essence the mineral composition of white slag; improve the gelation activity of white slag; improve the high added value recycling rate of white slag and slag solid waste simultaneously, and be conducive to environment protection.
Claims (4)
1. the adjusting material to the processing of electric steel furnace slag high-temperature activation, is characterized in that component and weight percent thereof are 0～55% bessemer furnace slag, 40～100% calcareous materials (in CaO) and 0～5% subsidiary material.
2. utilize the application of above-mentioned adjusting material to the processing of electric steel furnace slag high-temperature activation, it is characterized in that processing step is: first by above-mentioned weight percent, bessemer furnace slag, calcareous material and subsidiary material are mixed as regulating material, grind to form fine powder, then mix with 65～85% white slag according to the adjusting material of weight percent 15～35%, calcine, make, between each component, chemical reaction occurs, calcine rear by air-cooled or water-cooled, broken, grinding is prepared activation white slag powder, at Blain specific surface 400～500m
2when/kg, 28d activity index is greater than 85%.
3. the adjusting material to the processing of electric steel furnace slag high-temperature activation as claimed in claim 1, described calcareous material is mainly Wingdale, calcite, muddy limestone, chalk and calcareous industrial residue; Subsidiary material main ingredient is fluorite.
4. utilize as claimed in claim 2 the application of above-mentioned adjusting material to the processing of electric steel furnace slag high-temperature activation, it is characterized in that described calcining temperature is 1250 DEG C～1500 DEG C, activation white slag Free CaO is less than 2%.
Priority Applications (1)
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| CN201410216431.1A CN104016599B (en) | 2014-05-22 | 2014-05-22 | A kind of application regulating material that electric steel furnace slag high-temperature activation is processed |
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|---|---|---|---|
| CN201410216431.1A CN104016599B (en) | 2014-05-22 | 2014-05-22 | A kind of application regulating material that electric steel furnace slag high-temperature activation is processed |
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| CN104016599A true CN104016599A (en) | 2014-09-03 |
| CN104016599B CN104016599B (en) | 2016-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310810A (en) * | 2014-10-12 | 2015-01-28 | 韶关学院 | Preparation method and application of adjusting material for electric furnace white slag thermal refining treatment |
| CN106012742A (en) * | 2016-05-26 | 2016-10-12 | 新疆交通建设集团股份有限公司 | Process for stabilizing treatment of highway cement stabilizing layer through refining furnace white slag |
| CN108558246A (en) * | 2018-01-12 | 2018-09-21 | 韶关学院 | A kind of electroslag base mineral admixture and the preparation method and application thereof |
| CN113402180A (en) * | 2021-04-22 | 2021-09-17 | 刘新阳 | Thermal-state calcium-increasing modified stainless steel slag and use method thereof |
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| JPH02233539A (en) * | 1989-03-06 | 1990-09-17 | Kobe Steel Ltd | Slag block |
| CN101182138A (en) * | 2007-11-26 | 2008-05-21 | 济南大学 | Steel slag property optimized handling method |
| CN101560578A (en) * | 2009-05-19 | 2009-10-21 | 华南理工大学 | Performance adjustment material for activating steel slag at high temperature and application thereof |
| CN101792274A (en) * | 2010-03-19 | 2010-08-04 | 华南理工大学 | Calcium-silicon-aluminum property regulating material for carrying out on-line high-temperature reconstruction on medium-alkalinity steel slag and application thereof |
| CN103288333A (en) * | 2012-02-23 | 2013-09-11 | 同济大学 | Modified slag compound admixture and preparation method thereof |
-
2014
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Patent Citations (5)
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| JPH02233539A (en) * | 1989-03-06 | 1990-09-17 | Kobe Steel Ltd | Slag block |
| CN101182138A (en) * | 2007-11-26 | 2008-05-21 | 济南大学 | Steel slag property optimized handling method |
| CN101560578A (en) * | 2009-05-19 | 2009-10-21 | 华南理工大学 | Performance adjustment material for activating steel slag at high temperature and application thereof |
| CN101792274A (en) * | 2010-03-19 | 2010-08-04 | 华南理工大学 | Calcium-silicon-aluminum property regulating material for carrying out on-line high-temperature reconstruction on medium-alkalinity steel slag and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310810A (en) * | 2014-10-12 | 2015-01-28 | 韶关学院 | Preparation method and application of adjusting material for electric furnace white slag thermal refining treatment |
| CN106012742A (en) * | 2016-05-26 | 2016-10-12 | 新疆交通建设集团股份有限公司 | Process for stabilizing treatment of highway cement stabilizing layer through refining furnace white slag |
| CN106012742B (en) * | 2016-05-26 | 2018-04-03 | 新疆交通建设集团股份有限公司 | A kind of technique using refining furnace white slag stabilization processes cement stabilization layer |
| CN108558246A (en) * | 2018-01-12 | 2018-09-21 | 韶关学院 | A kind of electroslag base mineral admixture and the preparation method and application thereof |
| CN113402180A (en) * | 2021-04-22 | 2021-09-17 | 刘新阳 | Thermal-state calcium-increasing modified stainless steel slag and use method thereof |
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|---|---|
| CN104016599B (en) | 2016-06-29 |
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