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塘家冲金矿是一个红土型金矿,生产工艺为露天开采—破碎制粒—堆浸浸出—活性炭吸附,最终产品为载金炭。2007年11月开始工业性试验,该矿的载金炭一直是送往外单位进行解吸电解和熔炼。通过多次的外委加工,发现成本较高,回收率偏低。以载金炭品位为3 000 g/t为基准,每次送炭3 t,运输费用为3 000元/次,加工费用为4元/g,由此计算出外委解吸电解熔炼的成本为1.3万元/t。冶炼厂给出的回收率是96%,比较低。1 设备选型
Tongjiachong gold mine is a lateritic gold mine, the production process is opencast mining - crushing granulation - heap leaching - activated carbon adsorption, the final product is loaded with carbon. Industrial testing began in November 2007 and the gold-bearing carbon of the mine has been sent to outside units for desorption and smelting. Through many external processing, it is found that the cost is high and the recovery rate is low. Taking the gold-bearing grade of 3 000 g / t as base, 3 tons of charcoal was sent each time, the transportation cost was 3,000 yuan / time and the processing cost was 4 yuan / g. From this, the cost of electrolytic smelting by foreign committees was calculated as 1.3 Million / t. The recovery rate given by the smelter is 96%, lower. 1 equipment selection