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本文研究了钼酸钙代替钼铁在电炉炼钢时的应用。在实验室内测定和研究了湖南宝山铜矿生产的钼酸钙的熔点、密度、水分、结构、挥发量、分解温度和还原试验等数据。根据这些数据在电炉用钼酸钙冶炼高速钢,工具钢和结构钢。试验结果表明:钼酸钙中钼的回收率为85～95％;钼酸钙中微量有害元素对钢性能无影响;钼酸钙比钼铁的原材料消耗价值每吨低6000元左右(以纯钼计);与含55％的钼铁比,每吨钼酸钙可节约硅铁244kg,铝45.2kg,电2800度;同时还综合利用了钼精矿;节约能源;防止了污染。
In this paper, the application of calcium molybdate instead of ferromolybdenum in EAF steelmaking was studied. The melting point, density, moisture, structure, volatilization, decomposition temperature and reduction test of calcium molybdate produced in Hunan Baoshan Copper Mine were measured and studied in laboratory. Based on these data, high-speed steel, tool steel and structural steel are smelted with calcium molybdate in an electric furnace. The results show that the recovery of molybdenum in the calcium molybdate is 85-95%; the trace harmful elements in the calcium molybdate have no effect on the performance of the steel; the consumption value of calcium molybdate is about 6000 yuan lower than the molybdenum iron Meter); with 55% molybdenum-iron ratio, per ton of calcium molybdate can save 244kg ferrosilicon, aluminum 45.2kg, 2800 electrical degrees; also comprehensive utilization of molybdenum concentrate; energy conservation; to prevent pollution.