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透气塞吹气搅动铁水是七十年代国外迅速兴起的高效率炉外脱硫技术。近年来,在西欧国家,已经发展成为球铁、灰铸铁铁水脱硫的有效措施。山东机器厂于一九七八年三月在国内首次试验透气塞吹氮间断脱硫,取得成功。在此基础上,又对冲天炉化出的铁水,进行吹氮搅动连续脱硫试验,再次获得成功。并浇注了小批量的民品铸件。
Breathable plug inflaming stirring hot metal is the rapid rise of foreign countries in the seventies outside the furnace desulfurization technology. In recent years, in Western European countries, it has developed into an effective measure for desulfurization of ductile iron and gray cast iron. Shandong Machinery Factory in March 1978 the first time in China to test breathable plug blowing nitrogen intermittent desulfurization, and achieved success. On this basis, the molten iron from the cupola was pulverized, and the continuous desulfurization test was carried out to stir nitrogen nitrogen, which succeeded again. And pouring small quantities of civilian casting.