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针对高铁水比电弧炉直接使用钼氧化物合金化的可行性问题,在某厂100t电弧炉中开展了不同钼含量、铁水比和铁水喂入速率条件下的工业试验,对无外配还原剂的情况下,以CaO为抑制剂,直接使用氧化钼进行合金化的钼收得率及质量影响进行了研究。首先通过热力学分析证明了反应的可能性,又通过动力学计算研究了炉渣成分和温度对反应速率的影响。研究发现,对于钼含量不同的两种钢种,合金收得率均可达到91%以上。相对来说,钼含量低的钢种采用钼氧化物直接合金化的钼收得率要高于钼含量高的钢种。获取高钼收得率的最优方案为铁水比760kg/t,铁水喂入速度9.0t/min,可实现钼收得率93%以上,且同时保证了很高的钢水洁净度,实现了节能减排和很好的经济效益。
For the feasibility of direct use of molybdenum oxide alloying in high-speed hot metal-arc electric arc furnace, industrial tests were carried out under different molybdenum content, hot metal ratio and hot metal feeding rate in a 100t electric arc furnace in a certain plant. No external reductant , The influence of molybdenum oxide on the yield and quality of molybdenum directly alloyed with CaO as an inhibitor was investigated. First, the possibility of reaction was proved by thermodynamic analysis, and the influence of slag composition and temperature on the reaction rate was also studied by kinetic calculation. The study found that, for two different types of steel molybdenum, alloy yield can reach more than 91%. Relatively speaking, the low molybdenum content of molybdenum alloy direct alloying molybdenum recovery rate is higher than the high molybdenum content of steel. The optimal solution for obtaining high molybdenum yield is a hot metal ratio of 760kg / t and a hot metal feeding rate of 9.0t / min, which can achieve molybdenum recovery of over 93% and at the same time ensure high cleanliness of the molten steel and save energy Reduce emissions and good economic benefits.