FR2004076A1 - Magnesium alloy-impregnated coke for spher - cidal graphite prodn - Google Patents

Magnesium alloy-impregnated coke for spher - cidal graphite prodn

Info

Publication number
FR2004076A1
FR2004076A1 FR6907457A FR6907457A FR2004076A1 FR 2004076 A1 FR2004076 A1 FR 2004076A1 FR 6907457 A FR6907457 A FR 6907457A FR 6907457 A FR6907457 A FR 6907457A FR 2004076 A1 FR2004076 A1 FR 2004076A1
Authority
FR
France
Prior art keywords
coke
impregnated
magnesium alloy
molten iron
graphite
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.)
Withdrawn
Application number
FR6907457A
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.)
GEA Group AG
Evonik Operations GmbH
Original Assignee
SKW Trostberg AG
Metallgesellschaft AG
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 SKW Trostberg AG, Metallgesellschaft AG filed Critical SKW Trostberg AG
Publication of FR2004076A1 publication Critical patent/FR2004076A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Coke impregnated with magnesium alloys containing 1-10%, pref. 1-5% Li, Ca, Si or rare earth metals is suitable for treating molten iron to ensure the formation of graphite nodules. The presence of the alloying elements modifies the surface tension of the melt giving better impregnation of the coke and aids the removal of oxygen and sulphur from the molten iron. The coke is impregnated by heating to 800-1100 degrees C in a non-oxidising atmosphere and then immersing in the molten magnesium alloy bath at about 700 degrees C. It is introduced into the molten iron in the usual immersion bell. The process gives a high Mg yield and a relatively smooth and uniform treatment.
FR6907457A 1968-03-16 1969-03-14 Magnesium alloy-impregnated coke for spher - cidal graphite prodn Withdrawn FR2004076A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681608316 DE1608316A1 (en) 1968-03-16 1968-03-16 Treatment of cast iron melts for the production of cast iron with spheroidal graphite

Publications (1)

Publication Number Publication Date
FR2004076A1 true FR2004076A1 (en) 1969-11-21

Family

ID=5681515

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6907457A Withdrawn FR2004076A1 (en) 1968-03-16 1969-03-14 Magnesium alloy-impregnated coke for spher - cidal graphite prodn

Country Status (2)

Country Link
DE (1) DE1608316A1 (en)
FR (1) FR2004076A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163525A1 (en) * 1971-12-13 1973-07-27 Makeevsky

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163525A1 (en) * 1971-12-13 1973-07-27 Makeevsky

Also Published As

Publication number Publication date
DE1608316A1 (en) 1970-12-10

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Legal Events

Date Code Title Description
ST Notification of lapse