RO114910B1 - Process for preparing highly pure cast iron - Google Patents
Process for preparing highly pure cast ironInfo
- 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
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.
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) |
-
1992
- 1992-04-10 RO RO92-200497A patent/RO114910B1/en unknown
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