印度某赤铁矿洗矿溢流选矿试验

为了给铁品位在50%左右的印度某赤铁矿洗矿溢流的利用提供依据，采用细筛-强磁选-阴离子反浮选流程和细筛-螺旋溜槽-强磁选-阴离子反浮选流程对该洗矿溢流进行了选矿试验。试验结果表明，在-0.076 mm占75%的磨矿细度下，两流程分别可取得精矿铁品位为67.01%，回收率为87.77%和精矿铁品位为67.12%，回收率为89.71%的选别指标。鉴于后一流程可比前一流程减少约1/3的浮选量，因此推荐采用后一流程。

Beneficiation Experiments of Ore-washing Overflow of an India Hematite Ore

In order to provide the basis for making use of  ore-washing overflow of India hematite with Fe grade of 50%, the beneficiation experiments on ore-washing overflow were carried out by the process of fine screening-high intensity magnetic separation-anionic reverse flotation and the process of fine screening -spiral chute -high intensity magnetic separation-anionic reverse flotation.The tests results showed that under grinding fineness of -0.076 mm 75%, the concentrate with Fe grade of 67.01% and 67.12%, and Fe recovery of 87.77% and 89.71% were obtained respectively by the two processes.Since the latter decreased the flotation process by about 1/3 comparing with the former, the latter process is recommended.