据不完全统计,我国磁铁矿选厂现有的生产能力达年处理矿石5500多万吨,其中冶金部所属19个重点磁铁矿选厂的生产能力为年处理矿石5000万吨;1979年全国磁铁矿选厂生产的精矿占全国铁精矿产量的50％左右。这些选厂所产精矿质量、产量的提高与降低对钢铁工业生产有较大的影响,同时也是矿山节约能源的大户头。因此,抓磁铁矿选厂的挖潜、革新、改造,增产、节能,具有十分重要的经济意 According to incomplete statistics, the existing production capacity of magnetite ore processing plants in China reaches over 55 million tons of ore a year, of which 19 key magnetite processing plants belonging to the Ministry of Metallurgy have a production capacity of 50 million tons of ore per year; Concentrates produced by magnetite processing plants nationwide account for about 50% of the total iron concentrate production in the country. The quality and output of concentrates produced by these concentrates have a greater impact on the production of the iron and steel industry and are also the major targets for saving energy in the mines. Therefore, grasping potential selection of magnetite mills, innovation, transformation, increase production, energy saving, with a very important economic meaning