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为了硅钢生产的需要,二炼钢于1976年从西德Messo公司引进了一套RH真空处理装置。在生产实践中发现,在处理〔S〕≤0.005％的无取向硅钢时,有时由于炉料质量问题或吹炼过程中脱硫效果不理想等原因,导致吹炼终点硫含量偏高而改钢,有时甚至回炉,使连铸生产中断,降低了硅钢的成分合格率、质量合格率和硅钢片的原牌号合格率。为解决这个问题,1985年以来,二炼钢试验研制出适用于RH真空处理的、以活性石灰和萤石配制的三种脱硫剂,一年来的试生产表明,其中RC-1和RC-2的效果最佳,RC-3较差。将这种脱硫剂按一定
In order to meet the needs of silicon steel production, II Steel introduced a set of RH vacuum processing equipment from West Germany Messo Company in 1976. In practice, it has been found that when the non-oriented silicon steel with [S] ≤0.005% is treated, sometimes the quality of the charge or the desulfurization effect in the blowing process is not satisfactory, and sometimes the sulfur content at the blowing end is too high to change the steel. Even the furnace, continuous casting production interruption, reducing the silicon steel composition pass rate, quality pass rate and the original grade silicon steel sheet pass rate. To solve this problem, since 1985, two steelmaking experiments developed for the RH vacuum treatment, activated lime and fluorite prepared three kinds of desulfurization agent, a year of pilot production showed that RC-1 and RC-2 The best effect, RC-3 is poor. This kind of desulfurizer press certain