CN102304605A - High-alkalinity deoxidation refining slag - Google Patents

High-alkalinity deoxidation refining slag Download PDF

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Publication number
CN102304605A
CN102304605A CN201110255522A CN201110255522A CN102304605A CN 102304605 A CN102304605 A CN 102304605A CN 201110255522 A CN201110255522 A CN 201110255522A CN 201110255522 A CN201110255522 A CN 201110255522A CN 102304605 A CN102304605 A CN 102304605A
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CN
China
Prior art keywords
alkalinity
refining slag
percent
slag
deoxidation
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.)
Pending
Application number
CN201110255522A
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Chinese (zh)
Inventor
刘轶良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi Taigang Stainless Steel Co Ltd
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Shanxi Taigang Stainless Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanxi Taigang Stainless Steel Co Ltd filed Critical Shanxi Taigang Stainless Steel Co Ltd
Priority to CN201110255522A priority Critical patent/CN102304605A/en
Publication of CN102304605A publication Critical patent/CN102304605A/en
Pending legal-status Critical Current

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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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • 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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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The invention relates to high-alkalinity deoxidation refining slag, and belongs to the field of ferrous metallurgy. The high-alkalinity deoxidation refining slag is characterized by comprising the following raw materials in percentage by mass: more than or equal to 65 percent of CaO, more than or equal to 8 percent of Al2O3, more than or equal to 4 percent of Al, less than or equal to 8 percent of SiO2 and the balance of impurities, wherein the raw materials are mixed uniformly to form lumps, and in the aspect of granularity, the lumps with the diameter of between 10 and 50 millimeters account for over 95 percent. The high-alkalinity deoxidation refining slag has high alkalinity and a deoxidation function, and the using amount of lime lumps can be reduced greatly when the slag is added. Al in the slag is wrapped by CaO powder, so the Al can be difficultly reacted with oxygen in the air and has a high utilization rate; and the generation amount of smoke can be reduced greatly, safe production and environmental protection are facilitated, and the high-alkalinity deoxidation refining slag has great popularization value.

Description

A kind of high basicity deoxygenation refining slag
Technical field
The invention belongs to the ferrous metallurgy field, be specifically related to a kind of high basicity deoxygenation refining slag.
Background technology
At present, a large amount of on the market refining slags that use mainly contain following several types:
One type of quality per distribution ratio is:
CaO>=40%, Al 2O 3>=13%, CaF 2≤20%, SiO 2≤10%, this type of refining slag is furnished with CaF 2, and CaO is relatively low, generally needs when being used for refining with addition of more lime block;
Another kind of quality per distribution ratio is:
CaO>=40%, Al 2O 3>=20%, SiO 2≤15%, this type of refining slag does not need with addition of CaF 2, do not have deoxygenation function, and CaO is relatively low, generally need when being used for refining with addition of more lime block;
Also have one type quality per distribution ratio to be:
Al 2O 3>=35%, Al>=15%, SiO 2≤15%, CaO≤6%, this type of refining slag has deoxygenation function, but basicity is very low, needs other with addition of more lime block during on-the-spot the use, and the reaction of Al in the slag and airborne oxygen is serious especially in use, and the Al utilization ratio is low; And cigarette is very big, is unfavorable for safety in production and environment protection.
Summary of the invention
The present invention provides a kind of refining slag of high basicity deoxidation, and its objective is has deoxygenation function when being used to make steel, and reduces the consumption of lime block, can effectively reduce in the slag chance of oxygen reaction among the Al and air, the utilization ratio of raising Al; And reduce the generation of cigarette, be beneficial to safety in production and environment protection.
Technical scheme of the present invention:
Proportioning raw materials according to mass percent is:
85>=CaO>=65%, 30>=Al 2O 3>=8%, 20>=Al>=4%, SiO 2≤8%, surplus is an impurity.Al wherein can be a pure aluminium powder, or the Al after the conversion in the electrolytic aluminium factory aluminium scrap ash.
Granularity of the present invention is: accounting for more than 95% between the diameter 10-50mm.
The present invention not only basicity is high, and has deoxygenation function, adds the fashionable lime block consumption that significantly reduces.Because the Al in the slag by CaO powder parcel, is difficult for and airborne oxygen reaction, the Al utilization ratio is high; And can significantly reduce the generation of cigarette, be beneficial to safety in production and environment protection, have very big promotional value.
Embodiment one:
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment, but the specific embodiment of the present invention is not limited to following embodiment.
Quality per distribution ratio of the present invention is:
CaO is 65%, Al 2O 3Be 8%, the Al[LU1 in the electrolytic aluminium factory aluminium scrap ash] 4%, SiO 2Be 8%, surplus is an impurity.
With the said ratio raw materials mix evenly after, use ball press to be pressed into granularity to be: account for the sphere more than 95% between the diameter 10-50mm.
Illustrate: the Al in the electrolytic aluminium factory aluminium scrap ash is difficult for extracting, and each enterprise generally adopts the conversion mode at present, and the conversion mode is a known technology.Such as, the Al content in the electrolytic aluminium factory aluminium scrap ash of use is 20%, Al 2O 3Content is 40%, and surplus is an impurity, and then the aluminium scrap ash gets final product in mass parts 1:3 ratio is mixed with lime.
Embodiment two:
CaO is 80%, Al 2O 3Be 10%, pure aluminium powder is 4%, SiO 2Be 2%, surplus is an impurity.
With the said ratio raw materials mix evenly after, use ball press to be pressed into granularity to be: account for the olive shape more than 95% between the diameter 10-50mm.
Embodiment three:
CaO is 70%, Al 2O 3Be 12%, pure aluminium powder is 2%, the Al[LU2 in the electrolytic aluminium factory aluminium scrap ash] 4%, SiO 2Be 2%, surplus is an impurity.
With the said ratio raw materials mix evenly after, use ball press to be pressed into granularity to be: account for the olive shape more than 95% between the diameter 10-50mm.For convenient bonding, can add a spot of bath of glass.

Claims (2)

1. one kind high basicity deoxygenation refining slag is characterized in that proportioning raw materials according to mass percent is:
85>=CaO>=65%, 30>=Al 2O 3>=8%, 20>=Al>=4%, SiO 2≤8%, surplus is an impurity, and it is that diameter is the bulk more than 95% that accounts for of 10-50mm that its mixing is pressed into granularity.
2. a kind of high basicity deoxygenation refining slag according to claim 1 is characterized in that described Al is a pure aluminium powder, or the Al after the conversion of electrolytic aluminium factory aluminium scrap ash.
CN201110255522A 2011-09-01 2011-09-01 High-alkalinity deoxidation refining slag Pending CN102304605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110255522A CN102304605A (en) 2011-09-01 2011-09-01 High-alkalinity deoxidation refining slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110255522A CN102304605A (en) 2011-09-01 2011-09-01 High-alkalinity deoxidation refining slag

Publications (1)

Publication Number Publication Date
CN102304605A true CN102304605A (en) 2012-01-04

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CN201110255522A Pending CN102304605A (en) 2011-09-01 2011-09-01 High-alkalinity deoxidation refining slag

Country Status (1)

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CN (1) CN102304605A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102534116A (en) * 2012-01-18 2012-07-04 大连环球矿产有限公司 Slag modifier and preparation method and application thereof
CN113699404A (en) * 2021-08-25 2021-11-26 苏州大学 Composite salt for purifying aluminum waste and preparation and use methods thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020940A (en) * 2007-03-28 2007-08-22 北京科技大学 Process of deoxygenating, desulfurizing and controlling non-metal inclusion content in steel
CN101058839A (en) * 2006-04-20 2007-10-24 上海梅山钢铁股份有限公司 Synthetic slag for smelting low-silicon steel
CN101928805A (en) * 2009-06-26 2010-12-29 上海梅山钢铁股份有限公司 Desulfurizing agent for furnace rear of converter
CN102002550A (en) * 2010-12-09 2011-04-06 湖南华菱湘潭钢铁有限公司 Slag modifier for converter refining

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101058839A (en) * 2006-04-20 2007-10-24 上海梅山钢铁股份有限公司 Synthetic slag for smelting low-silicon steel
CN101020940A (en) * 2007-03-28 2007-08-22 北京科技大学 Process of deoxygenating, desulfurizing and controlling non-metal inclusion content in steel
CN101928805A (en) * 2009-06-26 2010-12-29 上海梅山钢铁股份有限公司 Desulfurizing agent for furnace rear of converter
CN102002550A (en) * 2010-12-09 2011-04-06 湖南华菱湘潭钢铁有限公司 Slag modifier for converter refining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102534116A (en) * 2012-01-18 2012-07-04 大连环球矿产有限公司 Slag modifier and preparation method and application thereof
CN102534116B (en) * 2012-01-18 2014-06-04 大连环球矿产有限公司 Slag modifier and preparation method and application thereof
CN113699404A (en) * 2021-08-25 2021-11-26 苏州大学 Composite salt for purifying aluminum waste and preparation and use methods thereof
CN113699404B (en) * 2021-08-25 2022-06-24 苏州大学 Composite salt for purifying aluminum waste and preparation and use methods thereof

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Application publication date: 20120104