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捷克氧气转炉钢产量约占总产量的44％。用氧气转炉取代平炉,出现了废钢过剩的问题。生铁成分明显地会影响氧气转炉炼钢生产的技术经济指标。捷克各厂生产的生铁Si含量为0.7～0.9％,个别情况为0.4～1.2％;Mn含量几乎与Si相同;P含量在0.1％左右;S含量为0.02～0.03％。近年来,国外氧气转炉炼钢用的生铁含Si量,有的已降到0.4％以下,Mn含量降到0.2％以下。从氧气转炉热平衡角度考虑,炉料中固体料比例大于25％时,要求生铁中Si含量大于0.8％。每氧化1千克Si,可放出
Czech oxygen converter steel production accounts for about 44% of total output. Oxygen converter replaced flat hearth, there has been the problem of excess scrap. Pig iron composition will obviously affect the oxygen steelmaking steelmaking technical and economic indicators. The Si content of pig iron produced in the Czech plants is 0.7-0.9%, in individual cases 0.4-1.2%; Mn content is almost the same as Si; P content is about 0.1%; S content is 0.02-0.03%. In recent years, foreign oxygen converter steelmaking pig iron with Si content, and some have dropped below 0.4%, Mn content dropped below 0.2%. From the point of view of oxygen converter thermal balance, when the proportion of solid material in the charge exceeds 25%, the Si content in the pig iron needs to be more than 0.8%. 1 kg per oxidation Si, can be released