CN103014470A - Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting - Google Patents
Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting Download PDFInfo
- Publication number
- CN103014470A CN103014470A CN2012105024821A CN201210502482A CN103014470A CN 103014470 A CN103014470 A CN 103014470A CN 2012105024821 A CN2012105024821 A CN 2012105024821A CN 201210502482 A CN201210502482 A CN 201210502482A CN 103014470 A CN103014470 A CN 103014470A
- Authority
- CN
- China
- Prior art keywords
- rock ballast
- common rock
- slag
- silica
- manganese
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method of using common rock ballast for smelting silicomanganese alloy. The method is characterized in that the afterheat of a submerged arc furnace is used for calcining common rock ballast containing calcium carbonate after silicomanganese alloy smelting molten iron is discharged, and an obtained calcined object is used as a slag-modifier agent for next silicomanganese alloy melting. Therefore, the common rock ballast replaces dolomite or lime to serve as the slag-modifier agent, the afterheat is fully used, the raw material source of the slag-modifier agent is enlarged, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of common rock ballast as the method for the slag supplying agent of manganese alloy smelting, belong to field of metallurgy.
Background technology
Silicomanganese is by manganese, silicon, iron and a small amount of carbon and other elementary composition alloy, is a kind of of many uses, alloy that output is larger.Mainly being as the reductor of Iron and Steel Production and the middle material of alloying constituent, also is simultaneously the main raw material that medium-low carbon ferromanganese is produced.The raw material of producing silicomanganese has manganese ore, rich manganese slag, silica, coke etc.The principle of manganese alloy smelting is as follows:
MnO
2+2C=Mn + 2 CO ， SiO
2+ 2C=Si+2 CO，MnO+ SiO
2=MnSiO
3 ，
Mn + Si= MnSi
In the smelting process of silicomanganese, in order to improve the reductive condition of silicon, in the furnace charge enough SiO2 must be arranged, carry out to guarantee that smelting process is under the acid slag all the time, still, excessive such as SiO2 in the pomace, can cause again the deslagging difficulty, therefore Smelting Simn In A adds the slag supplying agents such as rhombspar or lime usually, keeps slag to have suitable basicity, and can increase the rate of recovery of manganese.Its principle is: the main component of rhombspar is CaMg (CO
3)
2Be decomposed into CaO and MgO under the high temperature, basic oxide CaO and MgO are larger than MnO to the avidity of SiO2, therefore MnO can be come from the silicate displacing, make it to exist with free MnO form, MnO activity increases, and has reduced MnO and has begun reduction temperature, promote that MnO+C=Mn+CO reaction equation advances to the right, the reduction that has increased manganese element is reclaimed.Its reaction formula is:
CaO+ MnSiO
3=CaSiO
3 + MnO, MgO+ MnSiO
3=CaSiO
3 + MnO，MnO+C=Mn + CO
At present, most of silicomanganese producer adopts rhombspar, Wingdale or lime as slag supplying agent, and these slag supplying agent prices are higher, and the smelting cost of silicomanganese is high, and the economic benefit of enterprise can't realize maximization.And the lime of purchase go back in a large number factory can not in time use, and deposit to absorb moisture in the process, and deliquescence makes the energy consumption increase of smelting process, time lengthening.
Summary of the invention
The objective of the invention is to adopt common rock ballast to replace rhombspar or lime, the slag supplying agent as manganese alloy smelting has reduced raw materials cost.Our unit through a large amount of production practice, uses common rock ballast to replace existing slag supplying agent from the action principle of slag supplying agent, has obtained good technico-economical comparison.
The present invention is achieved in that the mineral hot furnace after the manganese alloy smelting molten iron is come out of the stove adds common rock ballast, common rock ballast is calcined 60～90min under the waste heat of mineral hot furnace, make Decomposition of Calcium Carbonate wherein generate calcium oxide, add the manganese ore, coke, the silica that meet manganese alloy smelting requirement ratio, mix, adopt conventional smelting technology to smelt, obtain silicomanganese;
Described common rock ballast is that calcium carbonate content is the rock ballast of 50wt%～90wt%, and add-on is for making basicity of slag n(CaO+MgO)/n(SiO
2) be 0.6～0.8, granular size is 10～50mm.
All can obtain the content of calcium carbonate and the content of silicon-dioxide to the composition detection of rock ballast before the common rock ballast of each adding,
Also can detect the content of each composition before adding manganese ore, coke, the silica, make the compound smelting proportion requirement of manganese ore, coke, silica of adding, also detect simultaneously calcium oxide in manganese ore, coke, the silica, silicon-dioxide and magnesian content, then calculate add how many common rock ballasts, make basicity n(CaO+MgO)/n(SiO
2) in 0.6～0.8 scope.
N(CaO+MgO) amount is calcium oxide and magnesian content sum in manganese ore, silica, the common rock ballast, n(SiO
2) amount be the content sum of silicon-dioxide in manganese ore, silica, the common rock ballast.
The present invention compared with prior art, its substantial characteristics and significant progress are:
1. the present invention adopts common rock ballast as slag supplying agent, because common rock ballast source is wide, raw materials cost is lower than rhombspar or Wingdale or lime, uses common slag melting silicomanganese quality and rhombspar or Wingdale or lime as broad as long out, has therefore reduced the cost of manufacturing enterprise.
2. the pyrolysis of the common rock ballast of the present invention is the waste heat that adopts mineral hot furnace, therefore takes full advantage of waste heat, and does not need special calciner (the special calciner of rhombspar needs that outsourcing is returned).
3. common rock ballast is non-hygroscopic, never degenerates, and can place for a long time, and the storage location does not need special warehouse (lime moisture absorption, moisture-sensitive absorb airborne carbonic acid gas and become calcium carbonate, and therefore high to the moistureproofness in warehouse, the construction cost in warehouse is large).
Embodiment
Embodiment 1
It is that 10～50mm calcium carbonate content is the common rock ballast of 50wt% that mineral hot furnace after the manganese alloy smelting molten iron is come out of the stove adds granular size, common rock ballast is calcined 60min under the waste heat of mineral hot furnace, make Decomposition of Calcium Carbonate wherein generate calcium oxide, add the manganese ore, coke, the silica that meet manganese alloy smelting requirement ratio, mix, adopt conventional smelting technology to smelt, obtain silicomanganese; Add-on is for making basicity of slag n(CaO+MgO)/n(SiO
2) be 0.6～0.8.
Annotate: all can obtain the content of calcium carbonate and the content of silicon-dioxide to the composition detection of rock ballast before adding common rock ballast at every turn,
Also can detect the content of each composition before adding manganese ore, coke, the silica, make the compound smelting proportion requirement of manganese ore, coke, silica of adding, also detect simultaneously calcium oxide in manganese ore, coke, the silica, silicon-dioxide and magnesian content, then calculate add how many common rock ballasts, make basicity n(CaO+MgO)/n(SiO
2) in 0.6～0.8 scope.N(CaO+MgO) amount is calcium oxide and magnesian content sum in manganese ore, silica, the common rock ballast, n(SiO
2) amount be the content sum of silicon-dioxide in manganese ore, silica, the common rock ballast.
Embodiment 2
After manganese alloy smelting is come out of the stove among the embodiment 1, adding granular size in the mineral hot furnace is that 10～50mm calcium carbonate content is the common rock ballast of 90wt%, common rock ballast is calcined 90min under the waste heat of mineral hot furnace, make Decomposition of Calcium Carbonate wherein generate calcium oxide, add the manganese ore, coke, the silica that meet manganese alloy smelting requirement ratio, mix, adopt conventional smelting technology to smelt, obtain silicomanganese; Add-on is for making basicity of slag n(CaO+MgO)/n(SiO
2) be 0.6～0.8.
Annotate: add common rock ballast before all can be to the composition detection of rock ballast at every turn, obtain the content of calcium carbonate and the content of silicon-dioxide, also can detect the content of each composition before adding manganese ore, coke, the silica, make the compound smelting proportion requirement of manganese ore, coke, silica of adding, also detect simultaneously calcium oxide in manganese ore, coke, the silica, silicon-dioxide and magnesian content, then calculate add how many common rock ballasts, make basicity n(CaO+MgO)/n(SiO
2) in 0.6～0.8 scope.N(CaO+MgO) amount is calcium oxide and magnesian content sum in manganese ore, silica, the common rock ballast, n(SiO
2) amount be the content sum of silicon-dioxide in manganese ore, silica, the common rock ballast.
Claims (1)
1. a common rock ballast is used for the method for manganese alloy smelting slag supplying agent, it is characterized in that: the mineral hot furnace after the manganese alloy smelting molten iron is come out of the stove adds common rock ballast, common rock ballast is calcined 60～90min under the waste heat of mineral hot furnace, add the manganese ore, coke, the silica that meet manganese alloy smelting requirement ratio, mix, adopt conventional smelting technology to smelt, obtain silicomanganese;
Described common rock ballast is that calcium carbonate content is the rock ballast of 50wt%～90wt%, and add-on is for making basicity of slag n(CaO+MgO)/n(SiO
2) be 0.6～0.8, granular size is 10～50mm;
Described n(CaO+MgO) amount is calcium oxide and magnesian content sum in manganese ore, silica, the common rock ballast, n(SiO
2) amount be the content sum of silicon-dioxide in manganese ore, silica, the common rock ballast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502482.1A CN103014470B (en) | 2012-11-30 | 2012-11-30 | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502482.1A CN103014470B (en) | 2012-11-30 | 2012-11-30 | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103014470A true CN103014470A (en) | 2013-04-03 |
| CN103014470B CN103014470B (en) | 2015-02-04 |
Family
ID=47963580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502482.1A Expired - Fee Related CN103014470B (en) | 2012-11-30 | 2012-11-30 | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103014470B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555973A (en) * | 2013-07-23 | 2014-02-05 | 内蒙古鄂尔多斯冶金有限责任公司 | Formula for recycling silicon-manganese alloy slag during silicon-manganese alloy production |
| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053302A (en) * | 1976-10-05 | 1977-10-11 | The United States Of America As Represented By The Secretary Of The Interior | Synthetic fluorspar for conditioning electric furnace slags |
| JPS5521510A (en) * | 1978-07-31 | 1980-02-15 | Daido Steel Co Ltd | Manufacture of manganese or manganese-base alloy ingot |
| CN1058049A (en) * | 1990-04-06 | 1992-01-22 | 谭氏陶器有限公司 | The composition and the method that are used for Synthetic Steel cinder inclusion, processing ladle slag and coating refractory cylinder-packing |
| CN1375566A (en) * | 2001-12-28 | 2002-10-23 | 纪翔 | Silico-manganese alloy producing process in MF furnace |
| CN101161835A (en) * | 2007-11-07 | 2008-04-16 | 内蒙古鄂尔多斯冶金有限责任公司 | Utilization process of ferrosilicon smelting slag in silicon-manganese alloy smelting |
-
2012
- 2012-11-30 CN CN201210502482.1A patent/CN103014470B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053302A (en) * | 1976-10-05 | 1977-10-11 | The United States Of America As Represented By The Secretary Of The Interior | Synthetic fluorspar for conditioning electric furnace slags |
| JPS5521510A (en) * | 1978-07-31 | 1980-02-15 | Daido Steel Co Ltd | Manufacture of manganese or manganese-base alloy ingot |
| CN1058049A (en) * | 1990-04-06 | 1992-01-22 | 谭氏陶器有限公司 | The composition and the method that are used for Synthetic Steel cinder inclusion, processing ladle slag and coating refractory cylinder-packing |
| CN1375566A (en) * | 2001-12-28 | 2002-10-23 | 纪翔 | Silico-manganese alloy producing process in MF furnace |
| CN101161835A (en) * | 2007-11-07 | 2008-04-16 | 内蒙古鄂尔多斯冶金有限责任公司 | Utilization process of ferrosilicon smelting slag in silicon-manganese alloy smelting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555973A (en) * | 2013-07-23 | 2014-02-05 | 内蒙古鄂尔多斯冶金有限责任公司 | Formula for recycling silicon-manganese alloy slag during silicon-manganese alloy production |
| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103014470B (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101775451B (en) | Blast-furnace smelting method for vanadium titano-magnetite | |
| CN100529120C (en) | Sintering method of high-chromium vanadium titano-magnetite | |
| CN102978312B (en) | Blast furnace smelting process used for high-vanadium-titanium low-MgO furnace slag | |
| CN103498016B (en) | Dephosphorization agent prepared by taking slag of decarbonization furnace as raw material and molten iron dephosphorization method | |
| CN105734197B (en) | A kind of novel environment friendly synthesizes slag making materials | |
| CN108950189A (en) | A method of sinter containing MgO is produced using waste magnesia carbon bricks | |
| CN101665848A (en) | Direct steel making process for iron ore | |
| CN103756701B (en) | Hyperergy coke and production method thereof | |
| CN102776359B (en) | Sintering mixture, and vanadium-titanium agglomerate, its preparation method and its application | |
| CN102827990A (en) | Fluoride-free slagging medium for use in converter and preparation method thereof | |
| CN103725877A (en) | Method for recycling converter steelmaking dust | |
| WO2022227184A1 (en) | Comprehensive utilization method for bottom-top composite blowing smelting reduction of high-iron red mud | |
| CN103014470B (en) | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting | |
| CN104060016B (en) | By the method for the converter smelting weathering steel of desulfurization slag, steel slag instead part steel scrap | |
| CN112981028B (en) | Method for extracting iron element from red mud | |
| CN101434018A (en) | Middle-manganese high-silicon low-fluorine smelting type welding flux | |
| CN108085449B (en) | The method of the double slag production ultra-low phosphoretic steels of converter | |
| CN103014237B (en) | Dephosphorization slag forming constituent and production method thereof | |
| CN102839252A (en) | Converter slag fluoride-free fusing agents and method for producing the same | |
| CN107142120A (en) | High-reactivity coke and preparation method thereof | |
| CN111154934A (en) | Furnace burden structure ratio for adjusting blast furnace slag MgO | |
| CN105132630A (en) | Compound slag cleaning agent for electric furnaces and converters and preparation method thereof | |
| CN104212943A (en) | Semisteel smelting technology | |
| CN101250609B (en) | Rear earth calsibar deoxidizer and preparation technique thereof | |
| CN103160630A (en) | Laterite nickel ore smelting method using palm shell to replace part of coke |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |