GB1499049A - Process for the decarbonization of high carbon ferro-manganese or of high carbon ferro-chrome - Google Patents

Process for the decarbonization of high carbon ferro-manganese or of high carbon ferro-chrome

Info

Publication number
GB1499049A
GB1499049A GB28172/76A GB2817276A GB1499049A GB 1499049 A GB1499049 A GB 1499049A GB 28172/76 A GB28172/76 A GB 28172/76A GB 2817276 A GB2817276 A GB 2817276A GB 1499049 A GB1499049 A GB 1499049A
Authority
GB
United Kingdom
Prior art keywords
blown
nozzles
melt
oxygen
gas
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
Application number
GB28172/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELEKTROMETALLURGIE GmbH
Original Assignee
ELEKTROMETALLURGIE GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2531034A external-priority patent/DE2531034C2/en
Priority claimed from DE19752540290 external-priority patent/DE2540290C3/en
Application filed by ELEKTROMETALLURGIE GmbH filed Critical ELEKTROMETALLURGIE GmbH
Publication of GB1499049A publication Critical patent/GB1499049A/en
Expired legal-status Critical Current

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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Abstract

1499049 Decarbonizing ferro chrome and ferro manganese GFE GES FUR ELEKTROMETALLURGIE mbH 7 July 1976 [11 July 1975 10 Sept 1975] 28172/76 Heading C7D High carbon ferro manganese or ferro chromium are decarbonized by blowing a superheated melt of the alloy with oxygen using jacketted nozzles. The alloy is heated to more than 100‹C above its melting range and blown, without the addition of cooling materials, to 1650-1900‹C for FeMn and 1750-2000‹C for FeCr to form high melting point Mn or Cr oxides which are reduced by lime and additions of reducing agents i.e. Si or Al and/or their alloys. The lime and reducing agents are added simultaneously, the lime being blown into the melt through the jacketted nozzles with an inert gas (Ar or Ar/H) and the reductants being added in solid or liquid form from above. Examples of reductants are FeSi, FeAl, SiCr and SiMn. The rate and amount of oxygen blown in is adjusted so that the decarburization reaction takes place in an area just above the gas nozzles, so that intensive mixing of the melt, oxygen and possibly, the jacket gas will occur there. The amount of oxygen required is 10-3 0Nm<SP>3</SP> for each 1%C to be removed per tonne of alloy, and it should be blown into the melt in 1-12.5 minutes. The protective jacket gas may be natural gas, propane &c., and up to 20% of the charge may be added in the form of solid material, provided the addition of the solid charge does not interfere with the decarbonization reaction above the nozzles.
GB28172/76A 1975-07-11 1976-07-07 Process for the decarbonization of high carbon ferro-manganese or of high carbon ferro-chrome Expired GB1499049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2531034A DE2531034C2 (en) 1975-07-11 1975-07-11 Process for decarburizing high-carbon ferro-manganese or high-carbon ferrochrome
DE19752540290 DE2540290C3 (en) 1975-09-10 Process for decarburizing * '1 "x 11" 6111 ferrochrome or high carbon ferromanganese

Publications (1)

Publication Number Publication Date
GB1499049A true GB1499049A (en) 1978-01-25

Family

ID=25769141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28172/76A Expired GB1499049A (en) 1975-07-11 1976-07-07 Process for the decarbonization of high carbon ferro-manganese or of high carbon ferro-chrome

Country Status (13)

Country Link
JP (1) JPS529616A (en)
AU (1) AU503271B2 (en)
BR (1) BR7604467A (en)
CA (1) CA1077277A (en)
CS (1) CS208709B2 (en)
ES (1) ES449716A1 (en)
FI (1) FI761996A (en)
FR (1) FR2317369A1 (en)
GB (1) GB1499049A (en)
NO (1) NO762364L (en)
PT (1) PT65351B (en)
SE (1) SE7607845L (en)
SU (1) SU648121A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274871A (en) * 1979-01-22 1981-06-23 Societe Francaise D'electrometallurgie-Sofrem Method of obtaining manganese alloys with a medium carbon content
DE3519111A1 (en) * 1984-05-28 1986-01-02 Japan Metals & Chemicals Co., Ltd., Tokio/Tokyo METHOD FOR PRODUCING A HIGH-QUALITY IRON ALLOY BY MELT REDUCTION

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414559A1 (en) * 1978-01-17 1979-08-10 Creusot Loire FERRO-MANGANESE REFINING PROCESS
JPS541044U (en) * 1978-04-28 1979-01-06
FR2444083A1 (en) * 1978-12-11 1980-07-11 Sofrem MANILESE ALLOY DEILICIATION PROCESS
JPS59167079U (en) * 1983-04-25 1984-11-08 マツダ株式会社 Truck back panel structure
JPS61291947A (en) * 1985-06-18 1986-12-22 Kawasaki Steel Corp Production of alloy iron
CN110819880B (en) * 2019-11-27 2021-06-22 宝钢德盛不锈钢有限公司 Pretreatment process and application of chromium-containing low-nickel molten iron for production of 200-series stainless steel
EP4116443A1 (en) 2020-03-06 2023-01-11 JFE Steel Corporation Method for producing low-carbon ferromanganese

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1040526A (en) * 1950-08-17 1953-10-15 Bochumer Ver Fu R Gussstahlfab Process for manufacturing low-carbon chromium and / or manganese alloys, of the type of refined and over-refined alloys
BE792732A (en) * 1972-01-13 1973-03-30 Elektrometallurgie Gmbh PROCESS FOR RAPIDLY DECARBURATION OF IRON ALLOYS BY MEANS OF OXYGEN

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274871A (en) * 1979-01-22 1981-06-23 Societe Francaise D'electrometallurgie-Sofrem Method of obtaining manganese alloys with a medium carbon content
DE3519111A1 (en) * 1984-05-28 1986-01-02 Japan Metals & Chemicals Co., Ltd., Tokio/Tokyo METHOD FOR PRODUCING A HIGH-QUALITY IRON ALLOY BY MELT REDUCTION

Also Published As

Publication number Publication date
PT65351B (en) 1978-01-06
FR2317369B1 (en) 1980-09-05
AU1581776A (en) 1978-01-19
CS208709B2 (en) 1981-09-15
SE7607845L (en) 1977-01-13
NO762364L (en) 1977-01-12
FI761996A (en) 1977-01-12
ES449716A1 (en) 1977-08-01
CA1077277A (en) 1980-05-13
PT65351A (en) 1976-08-01
SU648121A3 (en) 1979-02-15
BR7604467A (en) 1977-07-26
JPS5727166B2 (en) 1982-06-09
FR2317369A1 (en) 1977-02-04
AU503271B2 (en) 1979-08-30
JPS529616A (en) 1977-01-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee