氧化钼添加剂炼钢理论分析及其直接合金化研究

THEORETICAL ANALYSIS OF STEELMAKING USING MOLYBDENUM CONCENTRATE AS ADDITIVE AND APPLIED RESEARCH OF ITS DIRECT ALLOYING

简单介绍了传统钼铁合金的制备方法及国内外采用氧化钼替代钼铁直接合金化冶炼含钼钢的发展历程,从热力学和动力学理论基础出发,详细叙述了氧化钼作为炼钢添加剂合金化过程中的物理化学作用,理论分析了氧化钼添加剂直接合金化炼钢的可行性,在理论依据的指导下,进行了7种不同组分的氧化钼添加剂冶炼含钼钢试验,结果表明:氧化钼作为冶炼含钼钢添加剂,其在钢液中完全合金化的最佳时间为12 min,不同组分的氧化钼添加剂完全合金化后钼金属的收得率在92.4%~98.9%之间,除4#和6#添加剂外,其余4种组分均满足炼钢厂对钼回收率96%的要求。

The traditional ferromolybdenum preparation methods and the development of direct alloying smelting of molybdenum steel using molybdenum oxide instead of ferromolybdenum at home and abroad were introduced,the physical and chemical effects of molybdenum oxide in alloying process as additive for steelmaking were described in detail on the theoretical basis of thermodynamics and dynamics,the feasibility of the direct alloyed steelmaking with molybdenum oxide as additive was analyzed. Under the guidance of the theoretical basis,seven smelting molybdenum steel experiments were tested with molybdenum oxide as additive,the steelmaking experiments results showed that the perfect time for complete alloying was 12 minutes in the liquid steel with molybdenum oxide as additive,the molybdenum metal yield was between 92. 4% and 98. 9% after complete alloying of molybdenum oxide additive,the other 4 components all satisfied the requirements of steelmaking plant to the molybdenum metal yield 96% in steelmaking process with molybdenum oxide as additive.