由鞍山钢铁公司和北京钢铁学院,中科院金属研究所开发的“六五”国家科技攻关项目,钢包喷吹稀土粉粒工艺及稀土作用规律的研究课题,1986年1月28日冶金部主持通过了鉴定。该课题,选用包内合成渣喷吹稀土硅铁合金粉工艺,经150吨转炉200吨钢包44炉,300吨平炉100吨钢包5炉8000多吨钢试验。稀土加入量0.053%左右;脱硫率平均 By the Anshan Iron and Steel Company and Beijing Institute of Iron and Steel, Chinese Academy of Sciences Institute of Metal Research “65” national scientific and technological projects, ladle blast furnace lap process and the law of the role of rare earth research, January 28, 1986 Presided over by the Ministry of Metallurgy Identification. The subject, the bag made of synthetic rare earth ferrosilicon powder spraying process, the 150-ton converter 200 tons of ladle 44 furnaces, 300 tons of open-hearth 100 tons of steel 5 furnaces more than 8,000 tons of steel test. Rare earth addition of about 0.053%; average desulfurization rate