CN1110330A - Method for smelting iron alloy containing manganese and silicon in midfrequency electric furnace - Google Patents
Method for smelting iron alloy containing manganese and silicon in midfrequency electric furnace Download PDFInfo
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- CN1110330A CN1110330A CN 94103384 CN94103384A CN1110330A CN 1110330 A CN1110330 A CN 1110330A CN 94103384 CN94103384 CN 94103384 CN 94103384 A CN94103384 A CN 94103384A CN 1110330 A CN1110330 A CN 1110330A
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Abstract
The present invention relates to a method using intermediate-frequency electric furnace to smelt manganese-silicon type ferroalloy. It is applicable to recovery, smelting and secondary utilization of plastalloy produced in the course of crushing treatment of ferroalloy when steel-smelting. It is characterized by that firstly a metal block or ferroalloy block is molten into mother liquor, and then the plastalloy is added in proper quantities and is batches, and then they are uniformly stirred, and best of all, the plastalloy and carbon powder whose weight is 1-2% of that of plastalloy are alternatively added, and according to the different ferroalloy, the proper furnace lining material is selected and used. Said method is simple in technological process, and can reduce the contamination of dust to environment.
Description
The invention belongs to the ferroalloy smelting technical field, relate to a kind of method of utilizing the middle frequency furnace ferroalloy smelting.
In existing process for making process, the iron alloy (as ferromanganese, ferrosilicon, silicomanganese etc.) that will quantitatively drop into some certain particle sizes usually in smelting furnace is as the additive of adjusting steel constitution, therefore need in advance the iron alloy block break process of buying, be processed into needed granularity, can form a part of ferroalloy powder inevitably.These powder can not directly add steel melting furnace utilization (because powder often floats over the molten steel surface, be difficult to sink to deoxidation in the molten steel, also can't evenly stir), deposit improper meeting and cause dust pollution, generally can only transport iron work back as waste material and process again.
These ferroalloy powdeies utilize middle frequency furnace comparatively suitable because limited amount adopts steel melting furnace to come melting very uneconomical.But ferroalloy powder is put into middle frequency furnace and is difficult to form inductive loop, can't melt.In order to solve the recycling of ferroalloy powder, a lot of steel-making producer all did effort, did not still have good plan.
The object of the present invention is to provide a kind of method of utilizing middle frequency furnace ferroalloy smelting (particularly ferromanganese, ferrosilicon, silicomanganese), to solve the difficult problem that steelworks reclaims ferroalloy powder, smelt, utilize.
The present invention is based on following principle: under middle frequency furnace intermediate frequency effect of electric field, melted state or the briquette ferroalloy with certain volume can form inductive loop; Ferroalloy powder is dispersed in metal (as iron and steel) or the iron alloy liquation, can be by hot melt.
The middle frequency furnace smelting process of silicomanganese alloy provided by the invention, operate by following processing step:
(1) utilize metal block (preferably iron and steel) or iron alloy block to melt in middle frequency furnace as raw material earlier and make mother liquor, mother liquor preferably accounts for the 1/4-1/5 of furnace volume;
When (2) temperature reaches iron alloy fusing point (1500-1600 ℃) in stove, add ferroalloy powder in right amount in batches, stirred with iron staff simultaneously, make the powder uniform distribution, sneak in the mother liquor, treat that powder all after the fusing, continues to add ferroalloy powder again;
(3) the iron alloy liquid of fusing is poured in the corresponding mold, cast iron alloy block or iron alloy ball that the stove granularity requirements is gone in suitable steel-making, in middle frequency furnace, keep the mother liquor that an amount of iron alloy liquation is smelted as next stove simultaneously.
In order to improve the efficient of smelting, reduce the generation of waste residue, should select different middle frequency furnace furnace lining materials for use according to dissimilar iron alloys.The furnace lining material of middle frequency furnace roughly has two classes, and a class is acidic oxides such as silicon-dioxide (can generate acid under proper condition), and a class is basic oxide such as magnesium oxide (can generate alkali under proper condition).When iron alloys such as ferromanganese smelting, silicomanganese, the middle frequency furnace furnace lining preferably adopts the basic material of magnesium oxide one class.This is because the suboxide-manganese oxide that generates in this two classes ferroalloy smelting process is alkaline, if use acid lining, waste residues such as generating manganous silicate then can react.In like manner, when smelting ferrosilicon, the middle frequency furnace furnace lining adopts the acid material of silicon-dioxide one class, the waste residues such as generating Magnesium Silicate q-agent if the employing basic lining also can react.
Ferroalloy smelting is uncovered carrying out in middle frequency furnace, is easy to produce the oxidation and decarbonization phenomenon, and the carbon in promptly airborne oxygen and the iron alloy liquation reacts, and generates gas evolution.So just destroyed the rock steady structure that constitutes between manganese, iron, the carbon in the iron alloy, easy and furnace lining material reaction generates waste residue (manganiferous salt).For the harm that prevents that oxidation and decarbonization from causing, can be after an amount of ferroalloy powder of each adding stir, the 1-2% that presses ferroalloy powder weight again adds carbon dust (as Graphite Powder 99) in stove, stir.Because the proportion of carbon is little, mainly swim in the top layer of iron alloy liquation in the stove, be equivalent to form a protective layer, oxidation and decarbonization is mainly here carried out, reduce influence, thereby also just slowed down erosion furnace lining material to liquation.
Iron alloy middle frequency furnace smelting process provided by the invention has the following advantages:
1, the ferroalloy powder with manganese and silicon containing adopts present method to melt down processing and utilization, and complete processing is simple, need not to increase new equipment, and iron alloy per ton can be saved one over thousands of yuan, and economic benefit is considerable.
2, timely processing ferroalloy powder easily saves sapce charge usefulness, significantly reduces the pollution of dust to environment.
3, adopt suitable furnace lining material, the recovery utilization rate of ferroalloy powder can be brought up to 90% by 80%, reduce the generation of waste residue and the erosion of furnace lining material.
4, alternately an amount of ferroalloy powder and the carbon dust of adding in smelting process also can reduce the generation of waste residue and effectively to the erosion of furnace lining material.
5, this smelting process can be worked continuously, and also can intermittently produce.
Claims (4)
1, a kind of iron alloy middle frequency furnace smelting process of manganese and silicon containing is characterized in that, operates by following processing step:
(1) utilize metal (preferably iron and steel) piece or iron alloy block to melt in middle frequency furnace as raw material earlier and make mother liquor, mother liquor preferably accounts for the 1/4-1/5 of furnace volume;
When (2) temperature reaches iron alloy fusing point (1500-1600 ℃) in stove, add ferroalloy powder in right amount in batches, stirred with iron staff simultaneously, make the powder uniform distribution, sneak in the mother liquor, treat that powder all after the fusing, continues to add ferroalloy powder again;
(3) with the iron alloy liquid of fusing, pour in the corresponding mold, cast iron alloy block or iron alloy ball that the stove granularity requirements is gone in suitable steel-making, in middle frequency furnace, keep the mother liquor that an amount of iron alloy liquation is smelted as next stove simultaneously.
2, smelting process as claimed in claim 1 is characterized in that, when ferromanganese smelting, silicomanganese alloy, the middle frequency furnace furnace lining adopts the basic material of magnesium oxide one class.
3, smelting process as claimed in claim 1 is characterized in that, when smelting ferrosilicon, the middle frequency furnace furnace lining adopts the acid material of silicon-dioxide one class.
4, smelting process as claimed in claim 1 is characterized in that, after an amount of ferroalloy powder of each adding stirs, presses the heavy 1-2% of ferroalloy powder again and add carbon dust in stove, stirs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94103384 CN1110330A (en) | 1994-04-04 | 1994-04-04 | Method for smelting iron alloy containing manganese and silicon in midfrequency electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94103384 CN1110330A (en) | 1994-04-04 | 1994-04-04 | Method for smelting iron alloy containing manganese and silicon in midfrequency electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1110330A true CN1110330A (en) | 1995-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94103384 Pending CN1110330A (en) | 1994-04-04 | 1994-04-04 | Method for smelting iron alloy containing manganese and silicon in midfrequency electric furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN1110330A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046882A (en) * | 2014-06-06 | 2014-09-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for smelting austenitic stainless steel by utilizing waste magnesia-calcium bricks of AOD (argon oxygen decarbonization) converter |
| CN104313422A (en) * | 2014-09-26 | 2015-01-28 | 四川川投峨眉铁合金（集团）有限责任公司 | Online fusion production method of manganese-silicon alloy powder |
| CN105401052A (en) * | 2015-12-11 | 2016-03-16 | 宁夏维尔铸造有限责任公司 | Method for smelting manganeisen through intermediate frequency furnace |
| CN110343938A (en) * | 2019-08-09 | 2019-10-18 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting alloy powder |
| CN110396604A (en) * | 2019-08-09 | 2019-11-01 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting silicomangan powder |
| CN110527842A (en) * | 2019-08-09 | 2019-12-03 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle |
-
1994
- 1994-04-04 CN CN 94103384 patent/CN1110330A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046882A (en) * | 2014-06-06 | 2014-09-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for smelting austenitic stainless steel by utilizing waste magnesia-calcium bricks of AOD (argon oxygen decarbonization) converter |
| CN104313422A (en) * | 2014-09-26 | 2015-01-28 | 四川川投峨眉铁合金（集团）有限责任公司 | Online fusion production method of manganese-silicon alloy powder |
| CN104313422B (en) * | 2014-09-26 | 2016-05-11 | 四川川投峨眉铁合金（集团）有限责任公司 | A kind of production method of online melting manganese-silicon powder |
| CN105401052A (en) * | 2015-12-11 | 2016-03-16 | 宁夏维尔铸造有限责任公司 | Method for smelting manganeisen through intermediate frequency furnace |
| CN105401052B (en) * | 2015-12-11 | 2017-05-10 | 宁夏维尔铸造有限责任公司 | Method for smelting manganeisen through intermediate frequency furnace |
| CN110343938A (en) * | 2019-08-09 | 2019-10-18 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting alloy powder |
| CN110396604A (en) * | 2019-08-09 | 2019-11-01 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting silicomangan powder |
| CN110527842A (en) * | 2019-08-09 | 2019-12-03 | 宁夏亚启科技有限公司 | Utilize the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
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