细粒低品位难选胶磷矿浮选研究

摘要

针对宜昌细粒易泥化、低品位难选胶磷矿,采用稀浆浮选的单一反浮选工艺,以硫磷混酸调整pH值、抑制胶磷矿,采用改性脂肪酸类捕收剂HS捕收碳酸盐,获得了最终磷精矿P2O5品位为29.45％、MgO含量为1.28％、回收率为75.38％的优良指标,实现了白云石、方解石与胶磷矿的常温浮选分离.%According to Yichang collophane's character of low-grade and fineness, we determined the single reverse-flotation flowsheet and obtained a nice dressing indexes by using sulphur-phosphorous mixed acid as depressor and HS as collector. The final phosphorus concentrate contained P2O5 29.45%, MgO 1.28%, with a recovery of 75.38%, successfully separating dolomite and calcite from cellophane by flotation.