某铁矿石选择性絮凝脱泥-阳离子反浮选脱硅工艺研究及工业应用

采用选择性絮凝脱泥-阳离子反浮选工艺流程对某细粒铁矿石进行了试验研究。结果表明，采用选择性絮凝脱泥．阳离子反浮选流程闭路试验可获得铁精矿品位为65．50％，回收率为83．09％的较好指标。依据试验室试验参数，在年处理量15万t的小型选矿厂进行了工业生产调试。采用多段脱泥，可以解决矿泥对浮选的影响。现场获得铁精矿品位64．77％，回收率78．65％的工业指标。

Study on the Selective Flocculation-desliming and Cationic Reverse Flotation Technique for Silicate Removal from an Iron Ore

To remove silicate from a fine iron ore,selective flocculation-desliming and cationic reverse flotation technique was used.The results show that,an iron concentrate with a TFe grade of 65.50% and a recovery of 83.09% can be obtained by the closed-circuit bench test.Complying with the processing parameters of bench test,commercial trial was carried out in a small plant with an annual capacity of 150 000 t,while a multi-stage of desliming was adopted to minimize the influence of slime on flotation,and a conce...