贵州某硅-钙质胶磷矿双反浮选试验研究

摘要

Laboratory study was carried out to process a siliceous-calcareous cellophane ore from Guizhou province with a double-reverse flotation technique.It is found that at the grinding fineness of-74 μm 82.50％,with YW-01 and sulfuric acid as collector and regulator respectively for roughing at the optimized dosage of 1.4 kg/t and 14 kg/t,with SEA as collector for cleaning at the dosage of 0.5 kg/t,a closed-circuit test with the process consisting of one roughing,one cleaning and one scavenging resulted in a phosphate concentrate with P2O5 content of 30.54％ at recovery of 88.59％,and with contents of MgO and SiO2 at 0.81％ and 12.28％,respectively.%针对贵州某硅-钙质胶磷矿,采用双反浮选工艺进行了试验研究.结果表明,在磨矿细度-74 μm粒级占82.50％,租选捕收剂YW-01用量1.4 kg/t、调整剂硫酸用量14 kg/t,精选捕收剂SEA用量0.5 kg/t条件下,通过一粗一精一扫闭路浮选,可得到P2O5品位30.54％、回收率88.59％、MgO含量0.81％、SiO2含量12.28％的磷精矿.