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介绍济钢50t转炉采用BaO渣系,在出钢过程中,对钢水进行炉外“渣洗”脱硫工业性试验。结果表明,在含BaO渣系脱硫剂加入量8kg/t的条件下,平均脱硫率ηS≥35%,与不含BaO的CaO基脱硫剂相比,ηS相对提高40%左右。含BaO渣系的硫容量(CS′)、硫分配系数(LS)以及硫在渣中的传质系数(β(S))都比CaO—Al2O3—CaF2渣系的大;“混冲”能使钢渣界面积扩大1000倍以上,强化吹氩也能增大钢渣界面积等,这些因素都使脱硫率显著提高。研究表明,该工艺简便、快速、经济和有效,可以投入大规模工业生产中。
Introduction Jining Iron and Steel 50t converter using BaO slag system, in the tapping process, the steel outside the furnace “slag wash ” desulfurization industrial test. The results show that the average desulfurization rate ηS≥35% at 8 kg / t containing BaO slag desulfurization agent, the relative increase of ηS is about 40% compared with CaO-based desulfurization agent without BaO. The sulfur content (CS ’), sulfur distribution coefficient (LS) and sulfur mass transfer coefficient (β (S)) in slag with BaO slag system are larger than that of CaO-Al2O3-CaF2 slag system. "Can make the steel slag interface area expanded more than 1000 times, strengthen the argon can also increase the steel slag interface area, these factors make the desulfurization rate increased significantly. Research shows that the process is simple, rapid, economical and effective and can be put into large-scale industrial production.