CN1057488A - The electric furnace steelmaking method of self-contained manganese ore reduction manganese - Google Patents
The electric furnace steelmaking method of self-contained manganese ore reduction manganese Download PDFInfo
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- CN1057488A CN1057488A CN90105312A CN90105312A CN1057488A CN 1057488 A CN1057488 A CN 1057488A CN 90105312 A CN90105312 A CN 90105312A CN 90105312 A CN90105312 A CN 90105312A CN 1057488 A CN1057488 A CN 1057488A
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- manganese
- electric furnace
- manganese ore
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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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- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention relates to Electric furnace steel making,, be applicable to that electric furnace (or converter, open hearth, induction furnace) is smelted and contain manganese alloy steel particularly about the electric furnace steelmaking method of self-contained manganese ore reduction manganese.
Production process of the present invention is simple, and containing manganese ore need not be through agglomeration, and operations such as prereduction directly drop into electric furnace reduction manganese, to adopt the present invention to smelt the 20MnSi steel alloy by the GB standard is example, it is rhodochrosite that input contains manganese ore, and the rate of recovery average out to 97% of manganese is compared with former technology, do not increase power consumption, do not prolong tap to tap time, finished-product material can be all qualified, and production practice prove, adopt the present invention to smelt and contain manganese alloy steel, can obtain technology, economical effectiveness preferably.
Description
The present invention relates to Electric furnace steel making,, be applicable to that electric furnace (or converter, open hearth, induction furnace) is smelted and contain manganese alloy steel particularly about the electric furnace steelmaking method of self-contained manganese ore reduction manganese.
In the prior art, play the oxygenant effect as steelmaking feed, or containing the raw material of manganese ore as ferromanganese smelting, the rate of recovery of its manganese is less than 65% containing manganese ore.In recent years, utilize oxide compound DIRECT ALLOYING method, the technology of alloy smelting steel receives the concern on metallurgical boundary day by day, to contain manganese sinter or prereduction degree and be 68～78% carbon containing prereduction manganese nodule (or pelletizing) and drop into and carry out DIRECT ALLOYING in the electric furnace and smelt the commerical test and the research that contain manganese alloy steel and succeed, the rate of recovery of manganese reaches more than 95%.Units such as Shanghai Polytechnic Univ drop into carbon containing prereduction manganese nodule at 1.5 tons of electric furnaces, and (the ferrous metal rate is greater than 95%, manganese metal rate 5-7%) type approval test that replaces the part manganeseirom to smelt the ZGMn steel as the alloying furnace charge with oxidation style is obtained good effect, and the rate of recovery of manganese is greater than 95%.The characteristics of this technology: after steel scrap melts clearly, carbon containing prereduction manganese nodule is made carbide slag at a collection of input bath of reduction period, add ferromanganese after slag is white and adjust composition, the temperature adjustment tapping, its weak point is a carbon containing prereduction manganese nodule production process complexity, contains manganese ore through levigate, and is selected, after adding operations such as carbon dust agglomeration, enter equipment such as tunnel furnace 1150～1200 ℃ of prereduction roastings more than 2 hours.The method that the electrosmelting of exploring simple, the direct self-contained manganese ore reduction of a kind of production process manganese contains manganese alloy steel is very necessary.
The objective of the invention is to avoid above-mentioned weak point of the prior art and provide a kind of manganese ore that contains need not be through agglomeration (or making ball), the electrosmelting that operations such as prereduction directly drop into electric furnace reduction manganese contains the method for manganese alloy steel.
Purpose of the present invention can reach by following measure:
The present invention is a kind of electric furnace steelmaking method of self-contained manganese ore reduction manganese, its principal character is: (1) enters specification at (P), (C) is near after the specification, when oxidation period, bath temperature reached more than 1450 ℃, a collection of input contains manganese ore, that (2) drops into contains the manganese ore average grade greater than 20%, and (3) take off the fusing slag.Oxidation sludge becomes finishing slag after reducing.
The electric furnace steelmaking method of the self-contained manganese ore reduction of the present invention manganese, the used manganese ore that contains is a rhodochrosite.
The present invention will now be further detailed embodiment:
Adopt the present invention to smelt 100 tons of seven stove 20MnSi steel alloys at 5 tons of electric furnaces (15 tons of capacity), all produce by the GB1499-84 normal structure, get the raw materials ready routinely, contain manganese ore and adopt rhodochrosite, skim fettling routinely, the melting period oxygen blast is fluxed, molten clear back sampling thermometric, when bath temperature greater than 1450 ℃, phosphorus enters the specification lower limit.(P)≤0.02% o'clock is taken off full slag, drops into rhodochrosite, makes new slag, continues oxygen blast, and anti-fluid stopping slag operation.When (C) enters the specification lower limit, bath temperature is during near tapping temperature, add carbon reducing agent, control adds the silica flour amount, the sampling of reduction end, tapping, production practice prove, adopt technological operation of the present invention stable, molten bath slag blanket good fluidity, the quantity of slag is few, and manganese all enters specification, and manganese recovery ratio is in the 95%-100% scope, average recovery rate reaches 97%, compare with former technology, do not increase power consumption, do not prolong tap to tap time, the finished product wood property can be all qualified, adopts the present invention's smelting to contain manganese alloy steel and can obtain techno-economic effect preferably.
Claims (2)
1, a kind of electric furnace steelmaking method of self-contained manganese ore reduction manganese is characterized in that:
(1) enter specification at [P], [C] near after the specification, a collection of input contains manganese ore when oxidation period, bath temperature reached more than 1450 ℃;
That (2) drops into contains the manganese ore average grade greater than 20%;
(3) take off fusing slag, oxidation sludge and after reduction, become finishing slag.
2, electric furnace steelmaking method according to claim 1 is characterized in that the said manganese ore that contains is a rhodochrosite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105312A CN1020116C (en) | 1990-06-15 | 1990-06-15 | Electric furnace steelmaking method capable of reducing manganese from mangamese-containing ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90105312A CN1020116C (en) | 1990-06-15 | 1990-06-15 | Electric furnace steelmaking method capable of reducing manganese from mangamese-containing ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057488A true CN1057488A (en) | 1992-01-01 |
| CN1020116C CN1020116C (en) | 1993-03-17 |
Family
ID=4879137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90105312A Expired - Fee Related CN1020116C (en) | 1990-06-15 | 1990-06-15 | Electric furnace steelmaking method capable of reducing manganese from mangamese-containing ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020116C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899604A (en) * | 2010-08-03 | 2010-12-01 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN102899452A (en) * | 2011-07-25 | 2013-01-30 | 王金忠 | Application of composite manganese ore powder in replacement of manganese alloy to carry out direct steelmaking |
| CN102952918A (en) * | 2012-11-25 | 2013-03-06 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing rich-manganous slags with blast furnace rich-manganous molten iron |
| CN102965464A (en) * | 2012-11-25 | 2013-03-13 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing manganese-rich slag by smelting and reduction of high-manganese liquid iron in electric furnace |
-
1990
- 1990-06-15 CN CN90105312A patent/CN1020116C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899604A (en) * | 2010-08-03 | 2010-12-01 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN101899604B (en) * | 2010-08-03 | 2012-04-04 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN102899452A (en) * | 2011-07-25 | 2013-01-30 | 王金忠 | Application of composite manganese ore powder in replacement of manganese alloy to carry out direct steelmaking |
| CN102952918A (en) * | 2012-11-25 | 2013-03-06 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing rich-manganous slags with blast furnace rich-manganous molten iron |
| CN102965464A (en) * | 2012-11-25 | 2013-03-13 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing manganese-rich slag by smelting and reduction of high-manganese liquid iron in electric furnace |
| CN102965464B (en) * | 2012-11-25 | 2013-12-18 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing manganese-rich slag by smelting and reduction of high-manganese liquid iron in electric furnace |
| CN102952918B (en) * | 2012-11-25 | 2014-08-13 | 武钢集团昆明钢铁股份有限公司 | Smelting method for producing rich-manganous slags with blast furnace rich-manganous molten iron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020116C (en) | 1993-03-17 |
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