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本文研究了采用水力旋流器进行尾矿处理时加入絮凝剂的潜在益处。对铜一镍选厂的尾矿进行的试验表明,在适宜的条件下,絮凝剂可以明显地提高水力旋流器固-液分离的效果。例如,在给矿浓度为9%左右的条件下,在水力旋流器中加入絮凝剂时沉砂中固体的回收率可超过98%,而用常规的水力旋流器选别时沉砂中固体的回收率还不到53%。但是实际操作表明,给矿浓度是一个关键的因素,而且当尾矿浓度大于15%时,需要采用两段的水力旋流器选别作业,在这种情况下,在第二段作业中采用加絮凝剂的水力旋流器选别常规水力旋流器排出的溢流。加絮凝剂作为助剂的水力旋流器所选出的沉砂和溢流产品可以象重力浓缩机的产品那样被排列尾矿坝。但是采用这种水力旋流器进行作业时,可以得到更高的处理能力。
This article examines the potential benefits of adding flocculants when hydroclone tailings are used. Experiments on the tailings from a copper-nickel plant show that the flocculant can significantly improve the effect of the hydrocyclone solid-liquid separation under appropriate conditions. For example, solids recoveries of more than 98% of the solids in the grit may be added to the hydrocyclone at a feed concentration of about 9%, whereas in a grit chamber using a conventional hydrocyclone The recovery of solids is less than 53%. However, practice shows that feed concentration is a key factor, and when the tailings concentration is greater than 15%, a two-stage hydrocyclone is required to select jobs, in which case the second job is employed The hydrocyclone with flocculant selects the overflow discharged by the conventional hydrocyclone. The clinker and overflow products selected by the hydrocyclones with flocculants as auxiliaries can be arranged tailings dam as with gravity concentrator products. However, with this type of hydrocyclone, higher throughput can be achieved.