全尾矿分级浓缩试验研究

Investigation on Classified Thickening of Total Tailing

以某细粒铁矿尾矿为研究对象，进行了全尾矿高浓度浓缩试验研究。研究表明，采用水力旋流器能够使低浓度尾矿浆得到有效浓缩，在给矿浓度为10％-28％时，φ100—150mm水力旋流器底流浓度可以达到70％左右，底流产率可达到65．00％左右。水力旋流器溢流中的微细颗粒经过高效浓密机进一步浓缩后，浓度可达到45％-50％。采用水力旋流器-浓密机二段分级浓缩流程能够实现全尾矿的高浓度浓缩，在给矿浓度为10％-28％时，尾矿综合浓度可达到60％以上。

High concentration thickening of total tailing was investigated on a fine iron ore tailing. The results indicate that the application of hydrocyclone can effectively thicken the low concentration tailing. At a feed concentration of 10% - 28%, the underflow concentration of φ 100 - 150 mm hydrocyclone can reach about 70%, with the underflow yield being about 65%. The concentration of the micro-fine particles in the overflow can reach 45% - 50% when further thickened by highly effective thickener. The application of ＂hydrocyclone-thickener＂ two-stage classified thickening can help realize a highly concentrated thickening of total tailing, with the overall concentration of tailing being above 60% at a feed concentration of 10%-28%.