七宝山铁矿在采选过程中,大量低品位褐铁矿粉矿被当成废石或尾砂抛失。从1989年以来,该矿以粘胶状矿粉和水针状矿粉为原料,采用精选一一焙烧一一氧化工艺,生产出适用于建筑、塑料、橡胶、油漆等工业用无机矿物颜料铁西红、铁黄。目前已初步形成年产500吨的生产规模,产品符合GB1862—80、GB1863—80要求。 During the mining process of the Qibaoshan Iron Mine, a large amount of low-grade limonite powder ore was thrown out as waste rock or tailings sand. Since 1989, the mine uses mucilage mineral powder and water needle-shaped mineral powder as raw materials, and selects one of the roasting and oxidation processes to produce an inorganic mineral pigment suitable for industrial use such as construction, plastics, rubber, paint and the like Tiexi red, iron yellow. Has initially formed an annual output of 500 tons of production scale, products meet GB1862-80, GB1863-80 requirements.