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为了提高锰矿直接合金化锰的收得率,根据热力学分析结果确定了降低渣钢间锰分配比的影响因素。分析结果表明,提高温度和碳的活度是降低渣钢间锰分配比的必要条件。由此设计了感应炉试验方案,并进行了试验研究。结果表明,精炼渣在配加还原剂的情况下锰矿直接合金化锰平均收得率为90.8%,碳化硅作为还原剂在配碳量为1.2~1.4时,锰分配比最低;高温、高碳质量分数可以有效降低渣钢间锰分配比,底吹强度、锰矿加入量等工艺参数对锰矿直接合金化的效果有影响,应控制工艺避免锰矿石和还原剂的加入对钢中磷、硫产生的不利影响。
In order to improve the yield of direct alloying manganese in manganese ore, the influencing factors to reduce the manganese distribution ratio between slag steel were determined based on the results of thermodynamic analysis. The analysis results show that increasing temperature and carbon activity are the necessary conditions to reduce the manganese distribution ratio between slag steel. The design of the induction furnace test program, and conducted a pilot study. The results showed that the average recovery rate of manganese directly alloyed manganese was 90.8% with the reductant and that of silicon carbide was the lowest when the carbon content was 1.2-1.4 with silicon carbide as reductant. The high temperature and high carbon The mass fraction can effectively reduce the manganese distribution ratio, the bottom blowing strength, the addition of manganese ore and other process parameters on the direct alloying effect of manganese ore should be controlled to avoid manganese ore and reducing agent added to the steel phosphorus, sulfur produced Negative Effects.