AOD炉中氧化钼直接合金化冶炼不锈钢的热力学分析

Thermodynamic Analysis on Direct Alloying of Molybdenum Oxide for Stainless Steel in AOD Furnace

研究了钼元素的氧化反应以及三氧化钼的还原反应,并分析了氧化钼的加入对AOD冶炼不锈钢过程以及不锈钢液成分的影响;在此基础之上,研究了严重影响钼收得率的氧化钼挥发问题,最后分别探讨了去碳保钼以及去碳保铬的热力学条件。通过上述的计算和分析,认为氧化钼接入AOD炉中直接还原冶炼不锈钢是可行的,但在加入时,需配入一定量的还原剂和固定剂,这样才能降低氧化钼的加入对钢液质量以及钢液温度的影响,同时提高钼元素的利用率并冶炼出优质不锈钢种。

The oxidation reaction of molybdenum and reduction reaction of molybdenum trioxide were discussed, and the effect of the addition of molybdenum oxide on AOD process and the component of liquid steel was also investigated. The subsequent research was focused on the volatilization of molybdenum oxide which had a serious impact on the recovery of molybdenum. Finally, thermodynamic analysis of ＂decarburization and molybdenum conservation＂ and ＂decarburization and chromium conservation＇was accomplished. The direct alloying of molybdenum oxide in AOD is completely feasible, additional reducing agent and fixative agent, however, should be added to AOD, together with molybdenum oxide for higher recovery of molybdenum and better stainless steel.