铁多金属矿综合回收铁铜硫选矿工艺研究

铁多金属矿含铁47.79%、含铜0.066%、含硫2.05%, 通过“弱磁粗选-再磨-浮选脱硫-弱磁精选”流程选铁、“铜硫混浮-脱泥脱药-再磨-铜硫分离”流程回收铜和硫, 在一段磨矿-0.075 mm粒级占50%, 铁粗精矿、铜硫粗精矿再磨-0.075 mm粒级含量均为80%条件下, 可获得铁精矿铁品位66.63%、含硫0.069%、含铜0.0072%、铁回收率为92.41%, 铜精矿铜品位20.25%、含铁26.84%、含硫27.80%、铜回收率为52.16%, 硫精矿含硫44.00%、含铁43.04%、含铜0.15%、硫回收率为78.72%, 实现了铁、铜和硫的综合回收。

Beneficiation Technology for Comprehensive Recovery of Fe-Cu-S Resources from Fe-polymetallic Deposit

For a polymetallic ore grading 47.79% Fe, 0.066% Cu and 2.05% S, a flowsheet consisting sequentially of low intensity magnetic separation (LIMS) for roughing, regrinding, flotation for desulfurization and LIMS for cleaning was adopted to recover iron, followed by another process consisting of Cu/S bulk flotation, desliming-dereagent, regrinding and Cu/S separation for copper and sulfur concentration. With the grinding fineness of -0.075 mm 50% for the first stage of grinding and regrinding of iron and Cu-S rough concentrates at the size of -0.075 mm 80%, an iron concentrate grading 66.63% Fe, 0.0072% Cu and 0.069% S with a recovery of 92.41% Fe, a copper concentrate grade of 20.25% Cu, 26.84% Fe and 27.80% S with a recovery of 52.16% Cu, as well as a sulfur concentrate grading 44.00% S, 43.04% Fe and 0.15% Cu with a S recovery of 78.72% were prepared. Therewith, iron, copper and sulfur resources in this Fe-polymetallic ore can be recovered comprehensively.