RO114910B1 - Process for preparing highly pure cast iron - Google Patents

Process for preparing highly pure cast iron

Info

Publication number
RO114910B1
RO114910B1 RO92-200497A RO92200497A RO114910B1 RO 114910 B1 RO114910 B1 RO 114910B1 RO 92200497 A RO92200497 A RO 92200497A RO 114910 B1 RO114910 B1 RO 114910B1
Authority
RO
Romania
Prior art keywords
cast iron
maximum
highly pure
preparing highly
converter
Prior art date
Application number
RO92-200497A
Other languages
Romanian (ro)
Inventor
D. Alexandru Ivănescu
Original Assignee
Ivănescu D Alexandru
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 Ivănescu D Alexandru filed Critical Ivănescu D Alexandru
Priority to RO92-200497A priority Critical patent/RO114910B1/en
Publication of RO114910B1 publication Critical patent/RO114910B1/en

Links

Landscapes

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Invenţia se referă la un procedeu pentru obţinerea fontelor de înaltă puritate, cu maximum 0,40% Mn, maximum 0,04% S în convertizor LD, şi constă în afinarea fontei lichide de primă fuziune, având temperatura minimă de 1350°C , maximum 1,2% Mn, maximum 0,14% P, maximum 0,08% S în convertizor cu suflarea de oxigen prin lance, până se obţine un metal lichid, cu conţinuturile de maximum 0,05% Mn şi maximum 0,01% P şi o temperatură de 1640...1680°C. Pentru obţinerea compoziţiei chimice a fontei de înaltă puritate, metalul lichid, rezultat în urma afinării, este desulfurat şi carburat în oala de turnare, prin injectarea unui amestec pulverulent de cocs, var şi florură de calciu, în proporţii de 5 : 4 : 1.The invention relates to a process for the production of high purity cast iron with a maximum of 0.40% Mn, not more than 0.04% S in the LD converter, and consists in the provision of the first fusion liquid iron having a minimum temperature of 1350 ° C, 1.2% Mn, maximum 0.14% P, maximum 0.08% S in the Oxygen Lance Converter, until a liquid metal with a maximum of 0.05% Mn and no more than 0.01% P and a temperature of 1640 to 1680 ° C. In order to obtain the chemical composition of the high purity cast iron, the liquid metal resulting from the afforection is desulphurised and carburized into the casting pot by injecting a powder mix of coke, lime and calcium fluoride in a ratio of 5: 4: 1.

RO92-200497A 1992-04-10 1992-04-10 Process for preparing highly pure cast iron RO114910B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO92-200497A RO114910B1 (en) 1992-04-10 1992-04-10 Process for preparing highly pure cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO92-200497A RO114910B1 (en) 1992-04-10 1992-04-10 Process for preparing highly pure cast iron

Publications (1)

Publication Number Publication Date
RO114910B1 true RO114910B1 (en) 1999-08-30

Family

ID=64357665

Family Applications (1)

Application Number Title Priority Date Filing Date
RO92-200497A RO114910B1 (en) 1992-04-10 1992-04-10 Process for preparing highly pure cast iron

Country Status (1)

Country Link
RO (1) RO114910B1 (en)

Similar Documents

Publication Publication Date Title
SE8206374D0 (en) BORNITRIDE ASSOCIATION AND PROCEDURE FOR ITS PREPARATION
GB1456429A (en) Desulphurising mixtures
RO114910B1 (en) Process for preparing highly pure cast iron
CN1026501C (en) Directly alloying process in vanadium slag furnace
CA1174855A (en) Method of producing molten metal consisting mainly of manganese and iron
NO845110L (en) PROCEDURE FOR MAGNESIUM MANUFACTURING.
JPS5591926A (en) Preparation of extremely low carbon nitrogen stainless steel
SU1047964A1 (en) Method of dephosphorizing high alloyed steel wastes in steel melting unit
SU443911A1 (en) Slag-forming mixture
KR910000006B1 (en) Method of keeping inductor spouts downgates and outlet channels free of deposits in connection with a cast iron melt
Fenne The Use of Powder Injection for Desulphurization in Electric Arc Furnaces
SU553042A1 (en) Mixture for the production of exothermic slag-forming granules
JPS54103720A (en) Hypereutectic graphite cast iron and method of producing same
RU1779225C (en) Method for annealing iron powder
GB1461492A (en) Basic oxygen steel making process using a sodium hydroxide reaction product flux
SU459513A1 (en) The method of steel and alloys
SU1271887A1 (en) Method of melting steel
JPS5644705A (en) Direct reducing method of ore in converter
RU1794095C (en) Method of pig-and-scrap process of steel melting in open-hearth furnace
KR910006007B1 (en) Dephosphorization apent for molten steel
DE3480098D1 (en) Production of tool steels using chemically prepared v2o3 as a vanadium additive
JPS5792118A (en) Desiliconization method for molten iron
JPH01252715A (en) Method for operating iron bath type smelting reduction furnace
SU1395610A1 (en) Composition for producing unfired magnesia-carbon articles
JPS5571625A (en) Production of low molar ratio fluoride