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我国某热液型铜铀多金属硫化矿床,因矿化的多阶段性及矿化元素的多样性,矿石成分复杂,共性关系比较密切。根据化学成分的差异,该矿床划分为低硫高碳酸盐(A矿)和高硫高碳酸盐(B矿)两种类型。若以国外广泛采用的酸浸一浮选或浮选一酸浸的经典流程来处理这两种类型高碳酸盐铜铀多金属矿,一则酸耗高,不经济;二则在酸浸铀的过程中,部分铜也被浸出,而使综合提取有用金属的流程复杂,同时铜及伴生有用金属回收率低。通过试验研究,我们基于高价铀能溶于碳酸钠溶液,而铜在该溶液中溶解度低的特性,可采用加压碱浸—浮选(先冶后选)和浮选—加压碱浸(先选后冶)流程处理A矿,
Due to the multi-stage mineralization and the diversity of mineralization elements, the ore composition is complicated and the commonalities are relatively close. According to the difference of chemical composition, the deposit is divided into two types: low sulfur high carbonate (A ore) and high sulfur high carbonate (B ore). If the widely used foreign acid-flotation or flotation-acid leaching of a classic process to deal with these two types of high copper carbonate copper uranium polymetallic ore, a high acid consumption, uneconomical; two in the acid leaching In the process of uranium, part of the copper is also leached out, making the process of comprehensively extracting the useful metals complicated with low recoveries of copper and associated useful metals. Based on experimental studies, based on the fact that high-priced uranium can be dissolved in sodium carbonate solution and copper has low solubility in this solution, we can use pressurized alkali leaching-flotation (pre-smelting) and flotation-pressure alkali leaching First choice after the rule) process A mine,