CN1020116C - Electric furnace steelmaking method for reducing manganese from manganese-containing ore - Google Patents
Electric furnace steelmaking method for reducing manganese from manganese-containing ore Download PDFInfo
- Publication number
- CN1020116C CN1020116C CN90105312A CN90105312A CN1020116C CN 1020116 C CN1020116 C CN 1020116C CN 90105312 A CN90105312 A CN 90105312A CN 90105312 A CN90105312 A CN 90105312A CN 1020116 C CN1020116 C CN 1020116C
- Authority
- CN
- China
- Prior art keywords
- manganese
- electric furnace
- containing ore
- ore
- furnace
- 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.)
- Expired - Fee Related
Links
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 41
- 239000011572 manganese Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009628 steelmaking Methods 0.000 title abstract description 5
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical group [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000010891 electric arc Methods 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 241001062472 Stokellia anisodon Species 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 3
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229910000914 Mn alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- 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, in particular, it relates to an electric furnace steel-making method for reducing manganese from manganese-containing ore, and is applicable to electric furnace (or converter, open hearth furnace and induction furnace) smelting manganese-containing alloy steel. The production process is simple, manganese-containing ore is directly put into an electric furnace to reduce manganese without agglomeration, pre-reduction and other processes, the manganese-containing ore is put into the electric furnace to reduce the manganese by adopting the process to smelt the 20MnSi alloy steel according to the GB standard, the manganese-containing ore is rhodochrosite, the recovery rate of the manganese is up to 97 percent on average, compared with the original process, the process does not increase the power consumption, does not prolong the smelting time, and the properties of finished products are all qualified.
Description
The present invention relates in electric arc furnace with containing the method that manganese ore carries out alloying of manganese, be applicable to that electric furnace (or converter, open hearth, induction furnace) is smelted and contain manganese alloy steel.
In the prior art, play the oxygenant effect containing manganese ore 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%, in recent years, utilize the technology of oxide compound DIRECT ALLOYING method alloy smelting steel to receive the concern on metallurgical boundary day by day, the carbon containing prereduction manganese nodule (or pelletizing) that will contain manganese sinter or prereduction degree and be 68-78% drops into and carries out DIRECT ALLOYING in the electric furnace and smelt the commerical test and the research that contain manganese alloy steel and succeed, and 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, 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 in a collection of input of reduction period molten bath, 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, contain manganese ore through levigate, selected, after adding operations such as carbon dust agglomeration, enter equipment such as tunnel furnace 1150-1200 ℃ of prereduction roasting more than 2 hours, it is simple to explore a kind of production process, smelts with containing method that manganese ore directly carries out alloying of manganese that to contain manganese alloy steel very necessary in electric arc furnace.
The objective of the invention is to avoid above-mentioned weak point of the prior art and provide a kind of need not (or make operations such as ball, prereduction and directly drop into the method that electric furnace carries out alloying of manganese through agglomeration containing manganese ore.
Purpose of the present invention can reach by following measure.
The present invention is that a kind of using in electric arc furnace contains the method that manganese ore directly carries out alloying of manganese, it is characterized in that: after (1) melts clearly, enter specification at (P), promptly (P)≤0.02%(C) is near specification, when bath temperature reaches more than 1450 ℃, remove all and take off (P) slag, once drop into average grade then greater than 20% the manganese ore that contains, (2) continue oxygen blast and take off (C), when (C) enters the specification lower limit, bath temperature is sprinkled into carbon dust and reduces during near tapping temperature, and oxidation sludge becomes whole wine after through reduction.
With containing the method that manganese ore directly carries out alloying of manganese, the manganese ore that contains that is adopted is rhodochrosite or other manganese oxide ore in electric arc furnace in the present invention.
The present invention will now be further detailed embodiment:
Adopt the present invention to smelt 100 tons of seven stove 20MnSi steel alloys, all produce, get the raw materials ready routinely by the GB1499-84 normal structure at 5 tons of electric furnaces (15 tons of capacity), 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, and (P≤0.02% o'clock is taken off full slag, drop into rhodochrosite, make new slag, continue 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, oxidation sludge becomes finishing slag after reduction, production practice prove, adopt technological operation of the present invention stable, molten bath slag blanket good fluidity, the quantity of slag is few, manganese all enters specification, manganese recovery ratio is in the 95%-100% scope, and average recovery rate reaches 97%, compares 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 using in electric arc furnace contains the method that manganese ore directly carries out alloying of manganese; It is characterized in that:
(1) after molten clear, enter specification at (P), promptly (P)≤0.02% (C) near specification, when bath temperature reaches more than 1450 ℃, removes all and takes off (P) slag, once drops into average grade then greater than 20% the manganese ore that contains.
(2) continue oxygen blast and take off (C), when (C) enters the specification lower limit, bath temperature is sprinkled into carbon dust and reduces during near tapping temperature, and oxidation sludge becomes finishing slag after through reduction.
2, a kind of using in electric arc furnace according to claim 1 contains the method that manganese ore directly carries out alloying of manganese; It 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 for reducing manganese from manganese-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 for reducing manganese from manganese-containing ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057488A CN1057488A (en) | 1992-01-01 |
| CN1020116C true 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 for reducing manganese from manganese-containing ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020116C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
1990
- 1990-06-15 CN CN90105312A patent/CN1020116C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057488A (en) | 1992-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100364934B1 (en) | Method of making iron and steel | |
| CN101333578B (en) | Method for producing high carbon steel by high-catching carbon method | |
| CA1146759A (en) | Method of manufacturing stainless steel | |
| CN100562591C (en) | Technology with smelting ferroferrite with sponge iron | |
| CN101294230B (en) | Duplex steelmaking technique of revolving furnace | |
| CN103571999A (en) | Method for smelting nitrogen-controlling martensite stainless steel through total molten iron | |
| JPS54158320A (en) | Refining method for high chromium steel | |
| CN115369211B (en) | Method for enriching nickel by utilizing AOD furnace | |
| CN110079665B (en) | Preparation method of high-carbon metallized pellets for electric furnace | |
| CN108148941A (en) | A kind of smelting process of ultralow boron steel | |
| CN1020116C (en) | Electric furnace steelmaking method for reducing manganese from manganese-containing ore | |
| CN101440419B (en) | Control method for smelting high carbon low phosphorus steel by converter | |
| CN1219599A (en) | Production method for medium- and low-carbon manganese iron | |
| JP4097010B2 (en) | Molten steel manufacturing method | |
| CA1067292A (en) | Arc furnace steelmaking | |
| CN111074037A (en) | Novel process for upgrading manganese-rich slag smelting product structure | |
| US4108633A (en) | Arc furnace steelmaking | |
| JPH0471965B2 (en) | ||
| CN111961802B (en) | Process for smelting molten steel by using high-phosphorus iron ore as raw material | |
| CN1044127A (en) | The dephosphorization vanadium-main taining process of pig iron containing vanadium in electric arc furnace | |
| RU2145356C1 (en) | Method of converter melting with use of prereduced materials | |
| CN118326104A (en) | Method for directly producing high-vanadium manganese-containing steel based on short process of off-surface ore of vanadium titano-magnetite | |
| JPH08176638A (en) | Refining of stainless steel | |
| JP4781812B2 (en) | Converter steelmaking method | |
| JPH0313291B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |