浙江省东风萤石矿原来生产供黑色冶金用的萤石精矿,要求CaF_2含量95％以上。后来国家要求生产供外贸和国内化工及有色冶金用的一级萤石精矿,质量要求含CaF_2≥98％,SiO_2≤0.8％,CaCO_2≤1％。为了向国家提供优质产品,该矿于1972年采用了一段磨矿,一次粗选,一次扫选,五次精选的流程,以水玻璃和苏打作抑制剂、油酸作捕收剂,所得萤石精矿含 Zhejiang Dongfeng fluorite mine originally produced for the black metallurgical fluorite concentrate, requiring CaF_2 content of 95% or more. Later, the state demanded the production of a fluorite concentrate for foreign trade, domestic chemical and non-ferrous metallurgy. The quality requirements include CaF 2 ≥ 98%, SiO 2 ≤ 0.8% and CaCO 2 ≤ 1%. In order to provide the country with quality products, the mine used a grinding, a roughing, a sweep, and five selection processes in 1972 with sodium silicate and soda as inhibitors and oleic acid as a collector Fluorite concentrate with