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本文研究了浮选方铅矿和闪锌矿絮团的方法 ,即所谓的絮团浮选法。通过戊基钾黄药和动能输入引起疏水絮凝。用-2 0 μm单矿物进行微量浮选和絮团粒度测定。研究了pH值、戊基钾黄药的浓度、煤油用量和搅拌强度等参数对絮团浮选的影响。结果表明 ,絮团浮选效果与絮团粒度密切相关。在优化的操作条件下 ,方铅矿和闪锌矿的絮团浮选回收率可达到 10 0 % ,而常规浮选的回收率只有 40 %。试验还发现 ,少量的煤油可大幅度改进浮选指标 ,大量节省戊基钾黄药的用量。还用墨西哥ReydePlata细粒浸染的铅、锌、银、金和铜矿石进行了絮团浮选试验。试验结果表明 ,不仅絮团浮选的尾矿有用金属损失低 ,而且精选效率高 ,获得的精矿品位和回收率均比常规浮选高得多。前者可能是由于细粒有用矿物回收率高 ,后者可能是由于絮团形成和添加煤油使有用矿物浮选速度加快
In this paper, the flotation of galena and sphalerite flocculation method, the so-called floc flotation method. Hydrophobic flocculation caused by pentyl potassium xanthate and kinetic input. Microflotation and floc particle size determination with -2 0 μm single mineral. The effects of pH value, concentration of pentyl potassium xanthate, kerosene dosage and stirring intensity on the floc flotation were investigated. The results show that the flotation efficiency is closely related to the floc size. Under optimized operating conditions, flotation recovery of galena and sphalerite can reach 100%, compared to 40% for conventional flotation. The test also found that a small amount of kerosene can greatly improve the flotation index, a substantial savings in the amount of pentyl potassium xanthate. Flocculation tests were also conducted on lead, zinc, silver, gold and copper ores impregnated with ReydePlata fines in Mexico. The experimental results show that not only the loss of useful metals in the tailings of flocculation flotation is low, but also the efficiency of the selection is high. The concentrate grade and the recovery rate obtained are much higher than the conventional flotation. The former may be due to the high recovery rate of fine-grained useful minerals, which may be due to the formation of flocs and the addition of kerosene to accelerate the flotation of useful minerals