CN101928793A - Steel slag treatment method - Google Patents
Steel slag treatment method Download PDFInfo
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- CN101928793A CN101928793A CN2010102359237A CN201010235923A CN101928793A CN 101928793 A CN101928793 A CN 101928793A CN 2010102359237 A CN2010102359237 A CN 2010102359237A CN 201010235923 A CN201010235923 A CN 201010235923A CN 101928793 A CN101928793 A CN 101928793A
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- slag
- steel
- steel slag
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- ball mill
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Manufacture And Refinement Of Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a steel slag treatment method, which comprises the following steps: 1, the steel slag is poured from a slag ladle into a slag stewing pool, pulverized in steam by water-drilling stewing, loaded onto an automobile by a forklift and transported to a slag raw material factory, and the large iron in the steel slag is directly returned for steel making; 2, the steel slag is poured from the forklift to a raw material cabin; a sieve above the raw material cabin conveys the large iron for steel making; and the sieved steel slag enters the raw material cabin; 3, the raw material cabin is subjected to twice magnetic separation and enters a jaw crusher through a belt; the large steel slag is crushed and then subjected to four times of magnetic separation and screening; the fine steel slag enters a ball mill, and the coarse steel slag enters a cone crusher for milling; subsequently, twice magnetic separation is performed and then all steel slag enters the ball mill; after crushed by the ball mill, the steel slag is treated by two magnetic separators, and the separated refined powder flows into a refined powder pool through a water channel; the remaining tailing slurry flows into a tailing slurry pool through another water channel; and the remaining tailings are all discharged to the slag hill for paving. The invention can quickly treat the steel slag, make waste profitable, recycle the steel material to the great extent and realize zero emission.
Description
Technical field
The present invention relates to the method that a kind of slag is handled, can reclaim iron and steel stock to greatest extent, realize zero release.
Background technology
In the STEELMAKING PRODUCTION, every production 1t steel will be discharged about 0.1t slag.Slag matter is hard, piece big, it is broken to be difficult for, and will cause environmental pollution if stack these waste residues, and because of newly-built or enlarging slag field need a large amount of expropriations of land and investment, all brings very big burden for society and enterprise.
Summary of the invention:
In order to overcome the shortcoming of prior art, the invention provides a kind of process for treating steel slag, it can the fast processing slag, turns waste into wealth, and reclaims iron and steel stock to greatest extent, realizes zero release.
The present invention includes the following step: 1, slag is translated into braised slag pool by slag ladle, and stewing through the heat of fetching water, slag is efflorescence in steam, through 24 hours fetch water, slag became very little particle of granularity and powder, is installed on the automobile by forklift, move the slag raw material plant to, bulk iron wherein directly returns steel-making; 2, slag is swung to former feed bin by forklift, and the sieve of former feed bin top is sent to steel-making, the incoming stock storehouse of screen underflow with bulk slag iron; 3, former feed bin enters jaw crusher after by belt, twice magnetic separation, and the bulk slag is broken, and through behind four road magnetic separation and the screening building, fines enters ball mill again, and coarse fodder enters the cone crusher grinding, and the twice magnetic separation is crossed in the back, all enters ball mill at last; Through two magnetic separators, the smart powder of selecting flow to smart powder pond through a tank after ball mill was pulverized; Remaining tail mud flows in the tail mud sump through another tank, and the tailings in the tail mud precipitates in the pond, grabs out stacking through grab bucket; Remaining tailings all is emitted on the slag mountain, can be used for paving the way.
The sieve of the former feed bin top in described the 2nd step is a herring-bone, and middle high, two ends are low.When the forklift batch turning, the big slag steel of lumpiness is slipped to the both sides of sieve along screen cloth, picks up stacking by the sucker on the transfer gantry, sends to steel-making.
The mesh of the screen cloth that the screening building in described the 3rd step is used is 25mm.
The ball mill in described the 3rd step has opening for feed, and the gradient of opening for feed is 14 degree.
The gradient of the tank in described the 3rd step is 17 degree.
The present invention can the fast processing slag, turns waste into wealth, and reclaims iron and steel stock to greatest extent, realizes zero release.
Embodiment
The present invention includes the following step: 1, slag is translated into braised slag pool by slag ladle, and stewing through the heat of fetching water, slag is efflorescence in steam, through 24 hours fetch water, slag became very little particle of granularity and powder, is installed on the automobile by forklift, move the slag raw material plant to, bulk iron wherein directly returns steel-making; 2, slag is swung to former feed bin by forklift, and the sieve of former feed bin top is sent to steel-making, the incoming stock storehouse of screen underflow with bulk slag iron; 3, former feed bin enters jaw crusher after by belt, twice magnetic separation, and the bulk slag is broken, and through behind four road magnetic separation and the screening building, fines enters ball mill again, and coarse fodder enters the cone crusher grinding, and the twice magnetic separation is crossed in the back, all enters ball mill at last; Through two magnetic separators, the smart powder of selecting flow to smart powder pond through a tank after ball mill was pulverized; Remaining tail mud flows in the tail mud sump through another tank, and the tailings in the tail mud precipitates in the pond, grabs out stacking through grab bucket; Remaining tailings all is emitted on the slag mountain, can be used for paving the way.The sieve of the former feed bin top in described the 2nd step is a herring-bone, and middle high, two ends are low.When the forklift batch turning, the big slag steel of lumpiness is slipped to the both sides of sieve along screen cloth, picks up stacking by the sucker on the transfer gantry, sends to steel-making.The mesh of the screen cloth that the screening building in described the 3rd step is used is 25mm.The ball mill in described the 3rd step has opening for feed, and the gradient of opening for feed is 14 degree.The gradient of the tank in described the 3rd step is 17 degree.
Claims (5)
1. process for treating steel slag, it is characterized in that: comprise the following steps: 1, slag translates into braised slag pool by slag ladle, stewing through the heat of fetching water, slag is efflorescence in steam, through 24 hours fetch water, slag became very little particle of granularity and powder, is installed on the automobile by forklift, move the slag raw material plant to, bulk iron wherein directly returns steel-making; 2, slag is swung to former feed bin by forklift, and the sieve of former feed bin top is sent to steel-making, the incoming stock storehouse of screen underflow with bulk slag iron; 3, former feed bin enters jaw crusher after by belt, twice magnetic separation, and the bulk slag is broken, and through behind four road magnetic separation and the screening building, fines enters ball mill again, and coarse fodder enters the cone crusher grinding, and the twice magnetic separation is crossed in the back, all enters ball mill at last; Through two magnetic separators, the smart powder of selecting flow to smart powder pond through a tank after ball mill was pulverized; Remaining tail mud flows in the tail mud sump through another tank, and the tailings in the tail mud precipitates in the pond, grabs out stacking through grab bucket; Remaining tailings all is emitted on the slag mountain, can be used for paving the way.
2. process for treating steel slag according to claim 1 is characterized in that: the sieve of the former feed bin top in described the 2nd step is a herring-bone, and middle high, two ends are low.When the forklift batch turning, the big slag steel of lumpiness is slipped to the both sides of sieve along screen cloth, picks up stacking by the sucker on the transfer gantry, sends to steel-making.
3. process for treating steel slag according to claim 1 is characterized in that: the mesh of the screen cloth that the screening building in described the 3rd step is used is 25mm.
4. process for treating steel slag according to claim 1 is characterized in that: the ball mill in described the 3rd step has opening for feed, and the gradient of opening for feed is 14 degree.
5. process for treating steel slag according to claim 1 is characterized in that: the gradient of the tank in described the 3rd step is 17 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102359237A CN101928793B (en) | 2010-07-22 | 2010-07-22 | Steel slag treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102359237A CN101928793B (en) | 2010-07-22 | 2010-07-22 | Steel slag treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101928793A true CN101928793A (en) | 2010-12-29 |
| CN101928793B CN101928793B (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102359237A Active CN101928793B (en) | 2010-07-22 | 2010-07-22 | Steel slag treatment method |
Country Status (1)
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| CN (1) | CN101928793B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747174A (en) * | 2012-07-04 | 2012-10-24 | 新兴河北工程技术有限公司 | Process for extracting steel scrap and fine iron powder from slag by using dry method |
| CN102978305A (en) * | 2012-12-15 | 2013-03-20 | 武钢集团昆明钢铁股份有限公司 | Molten steel casting residue treatment and recycling method |
| CN103555867A (en) * | 2013-10-31 | 2014-02-05 | 中冶南方工程技术有限公司 | System and method for converting steel slag into renewable resources |
| WO2016041039A1 (en) * | 2014-09-19 | 2016-03-24 | Rolth do Brasil Indústria, Comércio e Serviços Ltda. | Process and system for eliminating the potential for ld and eaf steel slag expansion |
| CN108239684A (en) * | 2017-12-08 | 2018-07-03 | 河北新烨工程技术有限公司 | A kind of converter slag New Process for Treatment |
| CN108940519A (en) * | 2018-06-11 | 2018-12-07 | 淮北卓颂建筑工程有限公司 | A kind of steel slag freezing crushing method |
| CN111229442A (en) * | 2020-03-03 | 2020-06-05 | 亿诚（天津）建筑安装有限公司 | Fine steel slag treatment process |
| CN114277203A (en) * | 2021-11-17 | 2022-04-05 | 镇康县振兴矿业开发有限责任公司 | Iron ore slag extraction process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355711A (en) * | 1999-06-14 | 2000-12-26 | Nippon Steel Corp | Treatment of slag |
| CN1785878A (en) * | 2004-12-12 | 2006-06-14 | 攀钢集团钢城企业总公司废旧物资分公司 | Method of using vanadium titanium rotary furnace steel slag as cement iron correction material |
| CN101275170A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | Treatment process for high-silicon steel slag |
| CN101555531A (en) * | 2009-05-19 | 2009-10-14 | 华南理工大学 | Method for activating and modifying steel slag by residual heat of converter steel slag |
| CN101693929A (en) * | 2009-09-26 | 2010-04-14 | 新兴铸管股份有限公司 | Method for preparing slagging scrap by using steel-making waste residue |
-
2010
- 2010-07-22 CN CN2010102359237A patent/CN101928793B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355711A (en) * | 1999-06-14 | 2000-12-26 | Nippon Steel Corp | Treatment of slag |
| CN1785878A (en) * | 2004-12-12 | 2006-06-14 | 攀钢集团钢城企业总公司废旧物资分公司 | Method of using vanadium titanium rotary furnace steel slag as cement iron correction material |
| CN101275170A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | Treatment process for high-silicon steel slag |
| CN101555531A (en) * | 2009-05-19 | 2009-10-14 | 华南理工大学 | Method for activating and modifying steel slag by residual heat of converter steel slag |
| CN101693929A (en) * | 2009-09-26 | 2010-04-14 | 新兴铸管股份有限公司 | Method for preparing slagging scrap by using steel-making waste residue |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747174A (en) * | 2012-07-04 | 2012-10-24 | 新兴河北工程技术有限公司 | Process for extracting steel scrap and fine iron powder from slag by using dry method |
| CN102978305A (en) * | 2012-12-15 | 2013-03-20 | 武钢集团昆明钢铁股份有限公司 | Molten steel casting residue treatment and recycling method |
| CN102978305B (en) * | 2012-12-15 | 2014-12-17 | 武钢集团昆明钢铁股份有限公司 | Molten steel casting residue treatment and recycling method |
| CN103555867A (en) * | 2013-10-31 | 2014-02-05 | 中冶南方工程技术有限公司 | System and method for converting steel slag into renewable resources |
| CN103555867B (en) * | 2013-10-31 | 2016-03-02 | 中冶南方工程技术有限公司 | A kind of slag is converted into system and the method thereof of renewable resource |
| WO2016041039A1 (en) * | 2014-09-19 | 2016-03-24 | Rolth do Brasil Indústria, Comércio e Serviços Ltda. | Process and system for eliminating the potential for ld and eaf steel slag expansion |
| US10584060B2 (en) | 2014-09-19 | 2020-03-10 | Rolth Do Brasil Industria, Comercio E Servicos Ltda | Process and system for eliminating the potential for LD and EAF steel slag expansion |
| CN108239684A (en) * | 2017-12-08 | 2018-07-03 | 河北新烨工程技术有限公司 | A kind of converter slag New Process for Treatment |
| CN108940519A (en) * | 2018-06-11 | 2018-12-07 | 淮北卓颂建筑工程有限公司 | A kind of steel slag freezing crushing method |
| CN111229442A (en) * | 2020-03-03 | 2020-06-05 | 亿诚（天津）建筑安装有限公司 | Fine steel slag treatment process |
| CN114277203A (en) * | 2021-11-17 | 2022-04-05 | 镇康县振兴矿业开发有限责任公司 | Iron ore slag extraction process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101928793B (en) | 2012-01-11 |
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