贵州某硅-钙质胶磷矿双反浮选试验研究

Double-Reverse Flotation of Siliceous-Calcareous Collophane Ore from Guizhou

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-74μm粒级占82.50%,粗选捕收剂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P_2O_5品位30.54%、回收率88.59%、MgO含量0.81%、SiO_2含量12.28%的磷精矿。

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 P_2O_5 content of 30. 54% at recovery of88.59%,and with contents of MgO and SiO_2 at 0.81% and 12.28%,respectively.