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电炉熔炼铸铁，随着过热温度的提高和保温时间的增长会产生碳的烧损和铁水含气量的增加。通常电炉熔炼铸铁，碳的烧损为5％。关于含气量，一般认为铁水含氧量为0．002～0．003％［‘］，也有报道为0．005～0．025［‘］；铸铁含氮量一般情况下为0．006～0．016％，当炉料中钢料
Electric furnace smelting cast iron, with the increase of overheating temperature and holding time will result in carbon burning and the increase of hot metal content. Usually cast iron smelting, carbon loss of 5%. About gas content, generally considered hot metal oxygen content of 0.002 ~ 0.003% [’], has also been reported as 0.005 ~ 0.025 [’]; cast iron nitrogen content is generally 0.006 ~ 0 .016%, when the charge in the steel