目前国内外生产钼铁大多数采用反射炉氧化焙烧,均是用含Mo量≥45％的钼精矿,经氧化焙烧脱硫,采用硅——铝热法冶炼而成。然而我厂以含Mo<45％的低品位钼精矿为原料,用电加热式回转窑焙烧钼精矿,金属热法冶炼,生产出含Mo≥55％,60％,65％,用于钢和铸铁作合金剂的钼铁。经用户广泛使用,效果良好。钼铁产品远销20多个国家和地区。该窑采用一整套自控温度、自动记录、自动加料至出料的生产线,减轻了劳动强度,回收率达到了98％以上,增加了企业的经济效益。同时回收了尾气SO_2,生产副产品硫酸,从而改善了环境污染,年产93％硫酸达1,20O吨,用电加热式回转窑焙烧低钼精矿的试验研究,为我国冶炼行业开创了新的途径 At present, most domestic and foreign production of molybdenum iron oxide roasting furnace, are used Mo content ≥ 45% molybdenum concentrate, desulfurized by oxidation roasting, the use of silicon - aluminum thermal refining method. However, our factory uses low grade molybdenum concentrate containing Mo <45% as raw material, roasting molybdenum concentrate with electric heating rotary kiln and smelting by metal thermal method, to produce Mo containing 55%, 60%, 65% Ferroalloy made of steel and cast iron. Widely used by the user, the effect is good. Ferromolybdenum products are exported to over 20 countries and regions. The kiln uses a complete set of automatic temperature control, automatic recording, automatic feeding to the discharge of the production line, reducing labor intensity, the recovery rate reached 98%, an increase of the economic efficiency of enterprises. At the same time, tail gas SO_2 was recovered to produce byproduct sulfuric acid, thus improving the environmental pollution. The annual output of 93% sulfuric acid reached 1,200 tons. The pilot study of roasting low molybdenum concentrates with electric heating rotary kilns opened up a new way