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在感应炉上进行了一系列对比实验，研究结果表明：顶渣＋喂线工艺比完全顶渣工艺具有更快的脱硫效果，含BaO精炼渣系比传统的CaO-CaF2渣系具有更强的脱硫能力；当钢中氧和硫都很低时,CaSi合金能起到显著的深脱硫作用．由研究结果得出超低硫钢（ws＜0．0010％）钢液精炼的主要工艺参数．
A series of comparative experiments were carried out on the induction furnace. The results show that the top slag + feeding technology has faster desulfurization effect than the complete top slag technology. The BaO-containing slag system has stronger performance than the traditional CaO-CaF2 slag system Desulfurization capacity; when the steel is low oxygen and sulfur, CaSi alloy can play a significant deep desulfurization. The main process parameters of the ultra-low sulfur steel (ws <0.0010%) steel refining are obtained from the research results.