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从1984年起在印度的Rajpura-Dariba采用优先浮选从复合多金属硫化矿中回收铅精矿和锌精矿。生产中使用大量药剂,精矿生产成本高。由于世界上可获得的精矿越来越多,竟争日趋激烈,降低生产成本势在必行。Hindustan锌有限公司的研究与开发部已经在努力降低成本。方法是生产铅-锌混合精矿。这种精矿中含有的银足以使它对冶炼商具有吸引力,本文给出了在小型浮选装置中进行的开路和闭路试验结果。结果表明可获得冶炼商可接受的铅-锌混合精矿,银含量400ppm,石墨炭约3%。3000t/D工业试验表明混合浮选可减少药剂品种、减少药剂用量及降低能耗。与单一精矿相比,混合精矿回收率的提高带来了收入的增加。
Since 1984, Rajpura-Dariba in India has adopted preferential flotation to recover lead concentrates and zinc concentrates from composite polymetallic sulfide ores. The use of a large number of pharmaceutical production, concentrate production costs are high. As more and more concentrates are available in the world, competition is fiercer and fiercer and lower production costs are imperative. The research and development department of Hindustan Zinc Co., Ltd. is already working hard to reduce costs. The method is to produce lead-zinc mixed concentrate. This concentrate contains enough silver to make it attractive to the smelter. This article presents the results of open and closed circuit tests conducted in small flotation units. The results show that acceptable smelter acceptable lead-zinc concentrate, silver content of 400ppm, about 3% of graphite carbon. 3000t / D industrial tests show that mixed flotation can reduce the variety of medicaments, reduce dosage and reduce energy consumption. Compared with a single concentrate, mixed concentrate recovery rate brought about an increase in revenue.