论文部分内容阅读
1984年以来，印度拉贾斯坦邦拉伊萨曼德地区拉伊普拉—达里巴矿就使用大量的药剂从复杂多金属硫化矿床中优先浮选回收铅锌精矿。精矿生产成本很高。由于世界各地精矿产量日益增长，竞争越来越激烈，降低生产成本是必要的。印度斯坦（Hindustan）锌业有限公司（HZL）研究与发展部对此作出了努力，即通过生产对冶炼厂具有吸引力的、含有足量银的铅锌混合精矿来降低生产成本。本文介绍用日本Dowa连续小型浮选槽进行的开路试验和闭路试验。小型浮选槽的选矿结果证明，可获得冶炼厂可接受的混合浮选精矿。混合浮选精矿铅＋锌的含量为45％，银为400ppm，石墨碳约为3％。在日处理3000t的选厂中所做的工业试验表明，通过不用和少用某些药剂和省动力需求等费用将节省。同时，与单一精矿产品相比，生产混合精矿回收率高，收入大量增加在预料之中。
Since 1984, the Rhipola-Dariba mine in Rajshamand, Rajasthan, India, has used a large amount of pesticides to preferentially flotate lead and zinc concentrates from complex polymetallic sulphide deposits. Concentrate production costs are high. Due to the increasing production of concentrate around the world, the competition is getting fiercer and the cost of production is reduced. Research and Development at Hindustan Zinc (HZL) Zinc Co., Ltd. (HZL) has struggled to reduce production costs by producing lead-zinc mixed concentrates containing sufficient amounts of silver that are attractive to smelters. This article describes the open circuit test and closed circuit test conducted with Dowa continuous small flotation cells in Japan. The results of the beneficiation of the small flotation cell demonstrate that an acceptable mixed flotation concentrate can be obtained from the smelter. Mixed flotation concentrate lead + zinc content of 45%, silver is 400ppm, graphite carbon is about 3%. Industrial tests conducted at the 3000 tonne processing plant show that savings will be realized by eliminating the need for certain chemicals and reducing power requirements. At the same time, the recovery of mixed concentrate production is higher than expected for a single concentrate and a substantial increase in revenue is expected.