马钢桃冲矿生产的高炉块矿虽具有低磷、低硫、半自熔的优点,但二十多年来铁品位一直波动在34～36%,不能满足高炉冶炼的要求,尤其是近些年,产品销售不出去。1982年该矿采用北京矿冶研究总院研制的 CT-108型永磁磁滑轮,对15～50毫米的块矿进行预选。经过多 Although the blast furnace lump ore produced by Masteel Taochong Mine has the advantages of low phosphorus, low sulfur and semi-autogenous melting, the grade of iron has fluctuated between 34% and 36% over the past 20 years and can not meet the requirements of blast furnace smelting, especially in recent years , Product sales can not go out. In 1982, the mine used CT-108 type permanent magnetic pulley developed by Beijing Mining and Metallurgy Research Institute to pre-select lump ore of 15-50 mm. After more