论文部分内容阅读
坝脚采选工区,从1958年建立以来,都处理着以方铅矿为主的原生矿床上部之氧化砂铅矿。随着开采时间的延长和规模的扩大,该地表氧化砂铅矿已逐渐减少而往深部发展,因此原生矿物相应增多。由于浮选流程改造未能实现,1972年下半年开始,对这类混合铅矿石,在原重选流程基础上经稍加措施后,当原矿含铅13.00%左右时,获得铅品位62.08%,回收率84.86%,和铅精矿含银795.5克/吨,回收率83.66%的铅银混合精矿。为国家
Since its founding in 1958, the dam foot mining and dressing work area has been handling the gypsum-hosted oxide ore in the upper part of the primary deposit. With the extension of mining time and scale, the surface lead oxide gypsum has been gradually reduced to the deep development, so the corresponding increase in native minerals. As the flotation process transformation failed to achieve, beginning in the second half of 1972, this mixed lead ore, after the original re-election process based on a little measure, when the ore about 13.00% lead, lead grade 62.08%, recycling Rate of 84.86%, and lead concentrate silver 795.5 grams / ton, the recovery rate of 83.66% of the lead-silver mixed concentrate. For the country