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以陕西澄合矿区的煤系黄铁矿为原料,通过反浮-正浮分离黄铁矿,利用分离得到的黄铁矿精矿制备无机高分子絮凝剂聚合硫酸铁,探讨了聚合硫酸铁制备过程中不同因素的影响,并对制备的聚合硫酸铁进行了全铁含量、盐基度、亚铁离子等性能指标分析。结果表明,通过反浮-正浮的浮选方式分离得到最终产率为46%左右的黄铁矿精矿,在Fe2+/H2O2摩尔比为1∶2,Fe2+/H2SO4摩尔比为2∶1,60℃下反应2h,分批加入H2O2和H2SO4的方式时制得的聚合硫酸铁全铁含量为10.5%,亚铁离子含量<0.1%,盐基度达到10.54%,pH=1.0~2.0,为我国煤系黄铁矿的二次资源化利用提供了一条合理的利用途径。
Taking coal pyrite in Chenghe Mining Area of Shaanxi as raw material, inorganic pyrolytic coagulant was prepared by using pyrite concentrate separated by reverse float - positive floatation and polymerized ferric sulfate, and the effects of preparation of polymeric ferric sulfate The influence of different factors in the process, and analysis of the properties of the prepared polyferric sulfate such as total iron content, basicity of salt and ferrous ion. The results showed that the pyrite concentrate with a final yield of about 46% was obtained by reverse float - positive floatation. When the molar ratio of Fe2 + / H2O2 was 1: 2, the molar ratio of Fe2 + to H2SO4 was 2:1, 60 ℃ for 2h. When adding H2O2 and H2SO4 in batches, the total iron content of the polymerized ferric sulfate was 10.5%, the ferrous ion content was less than 0.1%, the basicity of the salt was 10.54% and the pH was 1.0-2.0 China’s coal pyrite secondary resource utilization provides a reasonable way to use.