利用粘土絮凝网处理钼矿尾液技术探索

Treatment of Gangue Suspension with Clay Suspension

钼矿选矿过程中使用了较高浓度的水玻璃 ,使得尾矿液中的细岩粉颗粒保持悬浮不沉 ,造成排放污染环境和回水浮选降低精矿回收率的问题。在采用各种絮凝剂不能奏效的情况下 ,本文通过实验研究了利用粘土悬浮液絮凝网络处理尾矿液的方法。粘土矿物及其絮凝网络捕获悬浮岩粉颗粒并挟带它们一起沉降 ,脱去岩粉的尾矿液可循环用于浮选。对比处理前后尾矿水和清水浮选结果表明 ,处理后的精矿回收率有明显提高。此项技术使选矿水循环使用 ,解决尾矿液排放污染问题。

Fine grains in the gangue suspension from a molybdenum ore dressing do not settle down because there is high concentration of sodium silicate (water glass) which is used in the beneficiating process. The debris suspension is discharged into a reservoir and the reservoir is full. Part of the gangue suspension was discharged into river and caused river pollution. This paper studies the technology of using clay suspension to treat the gangue suspension and enhancing the efficiency of ore dressing by re-circulating the treated gangue suspension for beneficiation. Clay particles adsorb fine grains and the flocculent net structure of clay suspension traps the grains, then bring them separating from the sodium silicate solution. Using the treated gangue suspension enhances the productivity of ore dressing. The risk of dam break is eased because the gangue suspension can be recycled for ore dressing and no more water will be discharged into the reservoir.