FR2068831A5 - Chromium base additive for ferrochromemfe - Google Patents

Chromium base additive for ferrochromemfe

Info

Publication number
FR2068831A5
FR2068831A5 FR6923208A FR6923208A FR2068831A5 FR 2068831 A5 FR2068831 A5 FR 2068831A5 FR 6923208 A FR6923208 A FR 6923208A FR 6923208 A FR6923208 A FR 6923208A FR 2068831 A5 FR2068831 A5 FR 2068831A5
Authority
FR
France
Prior art keywords
oxides
amounts
al2o3
cao
mgo
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
FR6923208A
Other languages
French (fr)
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to FR6923208A priority Critical patent/FR2068831A5/en
Application granted granted Critical
Publication of FR2068831A5 publication Critical patent/FR2068831A5/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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing

Abstract

The additive for making ferrochrome and similar alloys or steels is a pelletised mixture contg. chromium and iron carbides, free carbon, unreacted oxides of Cr, Fe, Si, Mg, Al and Ca, and at least small amounts of impurity oxides, and having a coating of hard oxides of Si, Mg, Al, Ca, Cr and Fe contg. low amounts of impurities wherein the proportion of SiO2 in the pellet is 20-45 wt.% and the amounts of MgO, CaO and Al2O3 are given by R = (1.0 MgO +0.72 CaO)/(1.0 Al2O3), where 1.3 = R =2.0. The hard flux coating makes the use of inert gas during the firing of the pellets unnecessary since air does nor penetrate significantly to the carbon.
FR6923208A 1969-07-08 1969-07-08 Chromium base additive for ferrochromemfe Expired FR2068831A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6923208A FR2068831A5 (en) 1969-07-08 1969-07-08 Chromium base additive for ferrochromemfe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6923208A FR2068831A5 (en) 1969-07-08 1969-07-08 Chromium base additive for ferrochromemfe

Publications (1)

Publication Number Publication Date
FR2068831A5 true FR2068831A5 (en) 1971-09-03

Family

ID=9037158

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6923208A Expired FR2068831A5 (en) 1969-07-08 1969-07-08 Chromium base additive for ferrochromemfe

Country Status (1)

Country Link
FR (1) FR2068831A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747491A1 (en) * 1995-06-06 1996-12-11 Armco Inc. Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747491A1 (en) * 1995-06-06 1996-12-11 Armco Inc. Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame

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