CN108588340A - A kind of method that low-temperature refining prepares low aluminium calcium impurities Antaciron - Google Patents
A kind of method that low-temperature refining prepares low aluminium calcium impurities Antaciron Download PDFInfo
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- CN108588340A CN108588340A CN201810496239.0A CN201810496239A CN108588340A CN 108588340 A CN108588340 A CN 108588340A CN 201810496239 A CN201810496239 A CN 201810496239A CN 108588340 A CN108588340 A CN 108588340A
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- antaciron
- slag
- refining
- low
- aluminium calcium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses the smelting processes that a kind of low-temperature refining prepares low aluminium calcium impurities Antaciron, belong to metallurgical refining techniques field.The refining slag used includes Fe2O3、SiO2、Al2O3、CaO、CaF2, slag-metal rate takes 0.1~0.5, and executes following steps：First melting Antaciron 15 minutes, then refining slag is covered in the melting of Antaciron surface 15 minutes, then refined 20~60 minutes at 1300 DEG C~1600 DEG C；In reaction process, it is filled with argon gas protection (flow 100mL/min), prevents Antaciron from being aoxidized in refining process.In the present invention, smelting temperature is 1300 DEG C~1600 DEG C, refining time is 20~60 minutes, it can ensure that Antaciron is in liquid, impurity can be removed preferably, and then it disclosure satisfy that the quality index of low aluminium calcium impurities Antaciron reaches Al ＜ 0.2%, the pre-provisioning request of Ca ＜ 0.005%.
Description
Technical field
The invention belongs to metallurgical refining techniques field more particularly to a kind of method of refining of low aluminium calcium impurities Antaciron.
Background technology
In traditional handicraft, Antaciron is original with silica, carbonaceous reductant and the lower steel scrap of impurity content or iron ore
Material, carries out reducing and smelting in electric furnace.But in smelting process, since added raw material contains Al2O3、CaO、P2O5Equal impurity,
During smelting reducing, impurity can be also reduced, and then the impurity such as Al, Ca, P can enter in Antaciron, influence ferrosilicon conjunction
The quality of gold.
Antaciron is widely used in steel and iron industry, foundary industry and other industrial productions, during Ferrous Metallurgy,
As deoxidier, alloy addition, exothermic mixture etc.；It is used as inovulant, nodulizer etc. in foundary industry.Especially as common
When deoxidier is used in steel industry, higher melting-point deoxidation products Al is generated in order to prevent2O3、CaO·Al2O3Make to pour water filling
Mouth occurs dross and causes to block, it is desirable that the aluminium, calcium impurities content in Antaciron are as low as possible.
Based on this, in order to prepare the Antaciron of low aluminium calcium impurities, mainly controlled in terms of two：Feed stock for blast furnace and the outer essence of stove
Refining.It is required that feed stock for blast furnace impurity content itself wants low, but only this aspect cannot meet final product quality requirement, must
Controlled in terms of external refining, external refining mainly has a chloridising and oxidizing process, wherein chloridising to environment, health, set
Standby harm is serious, does not use substantially；Oxidizing process includes：Oxygen blast, Argon, blowing compressed air, phase oxidative agent, refining slag
System, blows and slag refines.But study at present in the method for the Antaciron for preparing low aluminium calcium impurities, there are limitations：(1) it makes
Aluminium calcium impurities content is still higher in the Antaciron obtained, and product quality is not high；(2) smelting process is complicated, and product cost is high.Cause
This, a kind of smelting process is simple, and product cost is low, and the preparation method of the lower Antaciron of aluminium calcium impurities content is urgently developed.
Invention content
The present invention provides a kind of smelting processes, and low-temperature refining simple, that product cost is low prepares low aluminium calcium impurities ferrosilicon conjunction
The method of gold.
The method that low-temperature refining of the present invention prepares low aluminium calcium impurities Antaciron, the refining slag used include Fe2O3、
SiO2、Al2O3、CaO、CaF2In it is one or more, slag-metal rate takes 0.1~0.5, and executes following steps：
First melting Antaciron 15 minutes, then refining slag is covered in the melting of Antaciron surface 15 minutes, then exist
It is refined 20~60 minutes at 1300 DEG C~1600 DEG C；
In reaction process, it is filled with argon gas protection (flow 100mL/min), prevents Antaciron in refining process by oxygen
Change.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2For refining slag, slag gold
Than taking 0.1.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with Fe2O3For refining slag, slag gold
Than taking 0.1.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2、Fe2O3、Al2O3、CaO
And CaF2For refining slag, slag-metal rate takes 0.1.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2For refining slag, slag gold
Than taking 0.2.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with Fe2O3For refining slag, slag gold
Than taking 0.2.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2、Fe2O3、Al2O3、CaO
And CaF2For refining slag, slag-metal rate takes 0.2.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2For refining slag, slag gold
Than taking 0.5.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with Fe2O3For refining slag, slag gold
Than taking 0.5.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, with SiO2、Fe2O3、Al2O3、CaO
And CaF2For refining slag, slag-metal rate takes 0.5.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, smelting temperature be 1300 DEG C~
1600 DEG C, refining time is 20~60 minutes, can ensure that Antaciron is in liquid, impurity can be removed preferably, in turn
It disclosure satisfy that the quality index of low aluminium calcium impurities Antaciron reaches Al ＜ 0.2%, the pre-provisioning request of Ca ＜ 0.005%.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail, but the invention is not limited in specific realities
Apply example.
Low-temperature refining of the present invention prepares the smelting process of low aluminium calcium impurities Antaciron, and used refining slag includes
Fe2O3、SiO2、Al2O3、CaO、CaF2, can be a kind of individual slag agent, can also be two or more of refining slags by difference
The mixing slag agent for preparing of ratio, slag-metal rate takes a value in 0.1~0.5, and executes following steps：
First melting Antaciron 15 minutes, then refining slag is covered in the melting of Antaciron surface 15 minutes, then exist
It is refined 20~60 minutes at 1300 DEG C~1600 DEG C；
In reaction process, it is filled with argon gas protection (flow 100mL/min), prevents Antaciron in refining process by oxygen
Change.
Low-temperature refining of the present invention is prepared in the smelting process of low aluminium calcium impurities Antaciron, the refining slag agent and
Slag-metal rate can also be chosen according to following example, i.e.,
With SiO2For refining slag, slag-metal rate takes 0.1.
Alternatively, with Fe2O3For refining slag, slag-metal rate takes 0.1.
Alternatively, with SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.1.
Alternatively, with SiO2For refining slag, slag-metal rate takes 0.2.
Alternatively, with Fe2O3For refining slag, slag-metal rate takes 0.2.
Alternatively, with SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.2.
Alternatively, with SiO2For refining slag, slag-metal rate takes 0.5.
Alternatively, with Fe2O3For refining slag, slag-metal rate takes 0.5.
Alternatively, with SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.5.
Low-temperature refining of the present invention is prepared in the method for low aluminium calcium impurities Antaciron, reaction process be filled with argon gas into
Row protects (flow 100mL/min), and Antaciron is aoxidized in refining process in order to prevent.
In above-mentioned reaction, smelting temperature is optimal when being especially 1550 DEG C with smelting temperature between 1300 DEG C~1600 DEG C.Institute
State refining time between 20~60 minutes, especially most preferably with 30 minutes.Slag-metal rate is between 0.1~0.5 in the reaction, especially with 0.2
Most preferably.The reaction refining slag includes Fe2O3、SiO2、Al2O3、CaO、CaF2, especially with Fe2O3For refining slag agent when it is best.Pass through
The selection of conditions above, and then disclosure satisfy that the quality index of low aluminium calcium impurities Antaciron reaches Al ＜ 0.2%, Ca ＜
0.005% pre-provisioning request.
Claims (10)
1. a kind of method that low-temperature refining prepares low aluminium calcium impurities Antaciron, it is characterized in that：The refining slag used includes Fe2O3、
SiO2、Al2O3、CaO、CaF2In it is one or more, slag-metal rate takes 0.1~0.5, and executes following steps：
First melting Antaciron 15 minutes, then refining slag is covered in the melting of Antaciron surface 15 minutes, then at 1300 DEG C
It is refined 20~60 minutes at~1600 DEG C；
In reaction process, it is filled with argon gas protection (flow 100mL/min), prevents Antaciron from being aoxidized in refining process.
2. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2For refining slag, slag-metal rate takes 0.1.
3. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
Fe2O3For refining slag, slag-metal rate takes 0.1.
4. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.1.
5. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2For refining slag, slag-metal rate takes 0.2.
6. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
Fe2O3For refining slag, slag-metal rate takes 0.2.
7. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.2.
8. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2For refining slag, slag-metal rate takes 0.5.
9. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
Fe2O3For refining slag, slag-metal rate takes 0.5.
10. the method that low-temperature refining according to claim 1 prepares low aluminium calcium impurities Antaciron, which is characterized in that with
SiO2、Fe2O3、Al2O3, CaO and CaF2For refining slag, slag-metal rate takes 0.5.
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| CN201810496239.0A CN108588340A (en) | 2018-05-22 | 2018-05-22 | A kind of method that low-temperature refining prepares low aluminium calcium impurities Antaciron |
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| CN201810496239.0A CN108588340A (en) | 2018-05-22 | 2018-05-22 | A kind of method that low-temperature refining prepares low aluminium calcium impurities Antaciron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157860A (en) * | 2019-05-14 | 2019-08-23 | 鞍钢股份有限公司 | Refining slag for purification and dealumination of ferrosilicon and preparation method thereof |
Citations (3)
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|---|---|---|---|---|
| KR900003374B1 (en) * | 1986-05-30 | 1990-05-16 | 한국합금철공업 주식회사 | Making process for ferro-silicon alloy |
| CN102925688A (en) * | 2012-10-23 | 2013-02-13 | 鞍钢股份有限公司 | Refining method of high-purity silicon iron |
| CN103131931A (en) * | 2011-12-01 | 2013-06-05 | 宁夏天净冶金有限公司 | Producing method of high-purity silicon iron |
-
2018
- 2018-05-22 CN CN201810496239.0A patent/CN108588340A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900003374B1 (en) * | 1986-05-30 | 1990-05-16 | 한국합금철공업 주식회사 | Making process for ferro-silicon alloy |
| CN103131931A (en) * | 2011-12-01 | 2013-06-05 | 宁夏天净冶金有限公司 | Producing method of high-purity silicon iron |
| CN102925688A (en) * | 2012-10-23 | 2013-02-13 | 鞍钢股份有限公司 | Refining method of high-purity silicon iron |
Non-Patent Citations (2)
| Title |
|---|
| 姚登华: "浅谈硅铁和工业硅精炼用合成渣", 《铁合金》 * |
| 孙海峰 等: "硅铁炉外氧化精炼的实验研究", 《铁合金》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157860A (en) * | 2019-05-14 | 2019-08-23 | 鞍钢股份有限公司 | Refining slag for purification and dealumination of ferrosilicon and preparation method thereof |
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Application publication date: 20180928 |