FI70258B - Foerfarande foer raffinering av ferrokrommetall - Google Patents
Foerfarande foer raffinering av ferrokrommetall Download PDFInfo
- Publication number
- FI70258B FI70258B FI823522A FI823522A FI70258B FI 70258 B FI70258 B FI 70258B FI 823522 A FI823522 A FI 823522A FI 823522 A FI823522 A FI 823522A FI 70258 B FI70258 B FI 70258B
- Authority
- FI
- Finland
- Prior art keywords
- metal
- ferrochrome
- oxide
- process according
- silicon
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5264—Manufacture of alloyed steels including ferro-alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/226—Remelting metals with heating by wave energy or particle radiation by electric discharge, e.g. plasma
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5205—Manufacture of steel in electric furnaces in a plasma heated furnace
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Silicon Compounds (AREA)
- Manufacture Of Iron (AREA)
- Compounds Of Iron (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Claims (16)
1. Förfarande för raffinering av ferrokrommetall innehällande koi och kisel genom avlägsnande av ätminstone en del av kolet och kiseln, kännetecknat av att i) ferrokrommetallen och minst en lämplig metalloxid inmatas i en ugn med en väsentligen kolfri miljö, ii) ferrokrommetallen och metalloxiden upphettas med ett ter-miskt plasma med överförd bäge tili en temperatur, soin är till-räckligt hög för att upprätthälla bade den metalloxiden innehällande slaggfasen och ferrokrommetallfasen i smält tillständ och ästadkomma raffinering mellan flytande slagg och flytande metall, varvid metalloxiden reduceras genom inverkan av i ferrokrommetallen innehället koi och kisel, och iii) slaggen och ferrokrommetallen avtappas.
2. Förfarande enligt patentkravet 1, kännetecknat av att upp-hettningen utföres vid eller under atmosfärstryck.
3. Förfarande enligt patentkravet 1 eller 2, kännetecknat av att ferrokrommetallen utgöres av ett finkornigt material.
4. Förfarande enligt patentkravet 3, kännetecknat av att ma-terialet har en storlek av mindre än ca 2 mm i diameter.
5. Förfarande enligt nägot av de föregaende patentkraven, kännetecknat av att ferrokrommetallen blandas före inmatning.
6. Förfarande enligt nägot av de föregaende patentkraven, kännetecknat av att metalloxiden införes i ugnen i form av ett finkornigt oxidmaterial, som eventuellt kan vara agglomererat eller föreligga i form av styckeformig oxidmalm eller bädadera.
7. Förfarande enligt patentkravet 6, kännetecknat av att det finkorniga oxidmaterialet eller den styckeformiga oxidmalmen förreduceras, föroxideras eller förbehandlas pä annat sätt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA817209 | 1981-10-19 | ||
| ZA8107209 | 1981-10-19 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| FI823522A0 FI823522A0 (fi) | 1982-10-15 |
| FI823522L FI823522L (fi) | 1983-04-20 |
| FI70258B true FI70258B (fi) | 1986-02-28 |
| FI70258C FI70258C (fi) | 1986-09-15 |
Family
ID=25575704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI823522A FI70258C (fi) | 1981-10-19 | 1982-10-15 | Foerfarande foer raffinering av ferrokrommetall |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US4426223A (sv) |
| JP (1) | JPS58136745A (sv) |
| AT (1) | AT382641B (sv) |
| AU (1) | AU534839B2 (sv) |
| BR (1) | BR8206065A (sv) |
| CA (1) | CA1199499A (sv) |
| DE (1) | DE3238174A1 (sv) |
| ES (1) | ES8308933A1 (sv) |
| FI (1) | FI70258C (sv) |
| FR (1) | FR2514785B1 (sv) |
| GB (1) | GB2110717B (sv) |
| GR (1) | GR76912B (sv) |
| IN (1) | IN158808B (sv) |
| IT (1) | IT1153269B (sv) |
| MX (1) | MX160059A (sv) |
| NO (1) | NO156494C (sv) |
| RO (1) | RO89015A (sv) |
| SE (1) | SE460908B (sv) |
| TR (1) | TR21724A (sv) |
| WO (1) | WO1983001462A1 (sv) |
| YU (1) | YU233682A (sv) |
| ZW (1) | ZW22082A1 (sv) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1191517B (it) * | 1986-04-22 | 1988-03-23 | Necchi Spa | Procedimento per l'adduzione di elementi chimici metallici in fusioni metalliche |
| WO1989007499A1 (en) * | 1988-02-09 | 1989-08-24 | The Broken Hill Proprietary Company Limited | Superheating and microalloying of molten metal by contact with a plasma arc |
| RU2222629C2 (ru) * | 2002-03-18 | 2004-01-27 | ОАО "ТНК "Казхром" | Способ выплавки рафинированного феррохрома |
| DE102007016102A1 (de) * | 2007-04-03 | 2008-10-09 | Linde Ag | Vorrichtung und Verfahren zur Behandlung von Metallschmelzen |
| RU2424343C2 (ru) * | 2009-05-25 | 2011-07-20 | АКЦИОНЕРНОЕ ОБЩЕСТВО "Транснациональная компания "КАЗХРОМ" (АО "ТНК "Казхром") | Способ выплавки рафинированного феррохрома |
| RU2553118C1 (ru) * | 2013-12-13 | 2015-06-10 | Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт черной металлургии им. И.П. Бардина" | Способ производства низкоуглеродистого феррохрома в электропечи |
| US10508319B1 (en) * | 2019-06-27 | 2019-12-17 | MM Metals USA, LLC | Method and system for producing low carbon ferrochrome from chromite ore and low carbon ferrochrome produced thereby |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US789093A (en) | 1903-07-13 | 1905-05-02 | Thomas E Hunt | Furnace. |
| US1465576A (en) | 1922-09-29 | 1923-08-21 | Thomas G Biggs | Index tag |
| US2845342A (en) | 1953-03-12 | 1958-07-29 | Strategic Udy Metallurg & Chem | Method of recovering ferrochromium |
| GB789093A (en) * | 1954-06-16 | 1958-01-15 | Chromium Mining & Smelting Cor | Improvements in or relating to the production of low carbon ferrochromium |
| US2776882A (en) | 1955-12-19 | 1957-01-08 | Union Carbide & Carbon Corp | Decarburizing high-carbon ferrochromium |
| DE1433591A1 (de) * | 1962-12-21 | 1968-11-07 | Nippon Kokan Kk | Verfahren zum Herstellen von kohlenstofffreiem Ferrochrom |
| US3615349A (en) | 1968-01-10 | 1971-10-26 | William Bleloch | Production of alloys of iron |
| JPS5414043B1 (sv) | 1969-12-23 | 1979-06-04 | ||
| JPS5038050B2 (sv) * | 1971-12-29 | 1975-12-06 | ||
| JPS52150320A (en) * | 1976-06-10 | 1977-12-14 | Nippon Steel Corp | Production of low carbon ferrochromium |
-
1982
- 1982-10-12 AU AU89280/82A patent/AU534839B2/en not_active Expired
- 1982-10-13 CA CA000413310A patent/CA1199499A/en not_active Expired
- 1982-10-14 GR GR69533A patent/GR76912B/el unknown
- 1982-10-14 NO NO82823423A patent/NO156494C/no not_active IP Right Cessation
- 1982-10-15 DE DE19823238174 patent/DE3238174A1/de active Granted
- 1982-10-15 FI FI823522A patent/FI70258C/fi not_active IP Right Cessation
- 1982-10-15 ZW ZW220/82A patent/ZW22082A1/xx unknown
- 1982-10-18 US US06/434,752 patent/US4426223A/en not_active Expired - Lifetime
- 1982-10-18 MX MX194819A patent/MX160059A/es unknown
- 1982-10-18 FR FR8217353A patent/FR2514785B1/fr not_active Expired
- 1982-10-18 WO PCT/GB1982/000293 patent/WO1983001462A1/en not_active Ceased
- 1982-10-18 YU YU02336/82A patent/YU233682A/xx unknown
- 1982-10-18 GB GB08229701A patent/GB2110717B/en not_active Expired
- 1982-10-18 JP JP57183594A patent/JPS58136745A/ja active Pending
- 1982-10-18 ES ES516606A patent/ES8308933A1/es not_active Expired
- 1982-10-18 BR BR8206065A patent/BR8206065A/pt not_active IP Right Cessation
- 1982-10-18 SE SE8205893A patent/SE460908B/sv not_active IP Right Cessation
- 1982-10-19 IT IT8223821A patent/IT1153269B/it active
- 1982-10-19 AT AT0383982A patent/AT382641B/de not_active IP Right Cessation
- 1982-10-19 TR TR21724A patent/TR21724A/xx unknown
- 1982-12-31 IN IN946/DEL/82A patent/IN158808B/en unknown
-
1983
- 1983-06-16 RO RO83111308A patent/RO89015A/ro unknown
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MA | Patent expired |
Owner name: MIDDELBURG STEEL AND ALLOYS (PTY) LTD. Owner name: COUNCIL FOR MINERAL TECHNOLOGY |