| 摘要 |
PROBLEM TO BE SOLVED: To facilitate a dephosphorizing work and also, to shorten the treating time by reducing additional frequencies of oxidizing agent added while dividing into a plurality of times and further, to perform the dephosphorizing treatment without becoming high cost by reducing the additional quantity of the oxidizing agent. SOLUTION: Iron sulfide (FeS) as a sulfur additive containing at least either one side of the sulfur and the sulfur compound, is added into molten spheroidal graphite cast iron, and after adding the sulfur additive, ferrous oxide (FeO) as oxidizer and shell as lime base flux, are added to perform the dephosphorization.
|
