JPS54158313A - Chromium removing method for chromium-containing slag - Google Patents

Chromium removing method for chromium-containing slag

Info

Publication number
JPS54158313A
JPS54158313A JP6694078A JP6694078A JPS54158313A JP S54158313 A JPS54158313 A JP S54158313A JP 6694078 A JP6694078 A JP 6694078A JP 6694078 A JP6694078 A JP 6694078A JP S54158313 A JPS54158313 A JP S54158313A
Authority
JP
Japan
Prior art keywords
slag
molten
metal
chromium
content
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.)
Pending
Application number
JP6694078A
Other languages
Japanese (ja)
Inventor
Hiroshi Soga
Tsutomu Saito
Takafumi Kawamura
Hiroyuki Ogawa
Hiroyuki Katayama
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP6694078A priority Critical patent/JPS54158313A/en
Publication of JPS54158313A publication Critical patent/JPS54158313A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To reduction-recover Cr2O3, in molten metal of low Cr content, contained in Cr2O3-rich molten slag by separating the slag formed in refining of high Cr molten steel and by reacting the slag with the metal.
CONSTITUTION: Cr ore, an iron material reducing agent and a slag making agent are mixed and melt-reduced in an electric furnace to manufacture high Cr molten steel contg. Cr>10%, or high carbon ferrochromium is oxidation-decarburized to lower the Cr content. At this time, Cr2O3-rich molten slag is formed. This slag is separated from the molten steel and reacted with molten metal of low Cr content satisfying the following equation: 21[Cr%]-46[Si%]-3[C%]≤18. In the equation Cr%, Si% and C% are the concn. of each component in the molten metal. The Cr2O3 in the molten slag is reduced with Si and C in the molten metal and recovered in the metal.
COPYRIGHT: (C)1979,JPO&Japio
JP6694078A 1978-06-03 1978-06-03 Chromium removing method for chromium-containing slag Pending JPS54158313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6694078A JPS54158313A (en) 1978-06-03 1978-06-03 Chromium removing method for chromium-containing slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6694078A JPS54158313A (en) 1978-06-03 1978-06-03 Chromium removing method for chromium-containing slag

Publications (1)

Publication Number Publication Date
JPS54158313A true JPS54158313A (en) 1979-12-14

Family

ID=13330498

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6694078A Pending JPS54158313A (en) 1978-06-03 1978-06-03 Chromium removing method for chromium-containing slag

Country Status (1)

Country Link
JP (1) JPS54158313A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272346A (en) * 1985-05-29 1986-12-02 Nippon Steel Corp Melting-reducing refining method for high manganese ferrous alloy
JP2003502504A (en) * 1999-06-23 2003-01-21 エスエムエス・デマーク・アクチエンゲゼルシャフト Method for recovering chromium metal from slag containing chromium oxide
US6855189B2 (en) 2000-01-28 2005-02-15 Holcim Ltd. Method for removing chrome and/or nickel from liquid slags
WO2011045755A1 (en) * 2009-10-13 2011-04-21 Petrus Hendrik Ferreira Bouwer Ferrochrome alloy production
CN104087709A (en) * 2014-07-18 2014-10-08 承德建龙特殊钢有限公司 Method for smelting and reducing high-chromium slag in induction furnace

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272346A (en) * 1985-05-29 1986-12-02 Nippon Steel Corp Melting-reducing refining method for high manganese ferrous alloy
JP2003502504A (en) * 1999-06-23 2003-01-21 エスエムエス・デマーク・アクチエンゲゼルシャフト Method for recovering chromium metal from slag containing chromium oxide
US6855189B2 (en) 2000-01-28 2005-02-15 Holcim Ltd. Method for removing chrome and/or nickel from liquid slags
WO2011045755A1 (en) * 2009-10-13 2011-04-21 Petrus Hendrik Ferreira Bouwer Ferrochrome alloy production
CN104087709A (en) * 2014-07-18 2014-10-08 承德建龙特殊钢有限公司 Method for smelting and reducing high-chromium slag in induction furnace
CN104087709B (en) * 2014-07-18 2016-08-24 承德建龙特殊钢有限公司 A kind of method of melting and reducing height chromium slag in induction furnace

Similar Documents

Publication Publication Date Title
MX9605042A (en) Method for direct use of chromite ore in the production os stainless steel.
JPS54158313A (en) Chromium removing method for chromium-containing slag
US4198229A (en) Method of dephosphorization of metal or alloy
ES8105037A1 (en) Silico-thermal process for obtaining, in ladle, alloys based on manganese and silicium.
US5514331A (en) Method and device for producing stainless steel
US1835925A (en) Smelting process
US4222768A (en) Method for producing electric steel
US3304174A (en) Low oxygen-silicon base addition alloys for iron and steel refining
ES8402355A1 (en) Process for producing steel in a converter from pig iron and ferrous scrap.
JPS5768253A (en) Production of high carbon steel wire rod
US4101316A (en) Conversion of molybdenite concentrate to ferro-molybdenum and simultaneous removal of impurities by direct reduction with sulfide forming reducing agents
GB1451106A (en) Metallurgical process
SU985062A1 (en) Method of melting stainless steel
JPS54122615A (en) Reducing method for chromium oxide-containing slag
RU2278169C2 (en) Method for production of chromium-manganese stainless steel
US2971834A (en) Process in selective reduction of chrome ore
JPS57110612A (en) Vacuum refining method of low carbon, low nitrogen and high chromium steel
Van Vuuren Operating and quality control aspects of the production of critical low and high carbon products from continuously cast blooms
SU973217A1 (en) Intensifier of teaming of steel in ingot mould
JPS56127723A (en) Removal of impurities of high chromium molten steel
SU657067A1 (en) Method of melting bearing steel
GB1537470A (en) Process for separating nickel cobalt and copper
JPS5534657A (en) Manufacture of clean steel
Kuwabara et al. Production of Ferrochrome by Smelting Reduction in a Stirred Bath. III. Smelting Reduction of 20% Chromium Molten Iron With 650 kg Top and Bottom Blowing Converter.(Synopsis)
JPS6475646A (en) Manufacture of stainless steel