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在图瓦共和国境内的克兹尔沿叶尼赛河大小支流已知分布有160多个冲积矿床。不久前在对其勘探开发中实现了用混汞法从重选粗精矿中回收金的方法。而结果河谷自然环境却遭到汞的严重污染,这一点已由对某些老的手工淘金开采区段的地球生物研究所证实(见表)。为了净化被污染泥沙中的混汞产物,研究院研究制定了一种工艺流程,以利用手工淘金尾矿和选矿厂含金尾矿贮存区中的汞和伴生的有用矿物。流程(见图)包括:粗磨和细磨段、物理-化学过程、过滤、干燥和熔炼。此流程可用来从重粘土质砂矿床和倾斜冲积淤积矿中提取细粒金,既可在精矿研磨段编入工艺流程,又可在-25型、-50型和-75型洗矿设备深加料槽之后部从含金低的石英硫化矿中直接分选游离金。
More than 160 alluvial deposits are known to have been distributed in the tributaries of the Yenisai River in the territory of the Tuva Republic. Not long ago, a method of recovering gold from heavy ore concentrate by using the mercury amalgamation method was realized in its exploration and development. As a result, the valley’s natural environment was heavily contaminated with mercury, as confirmed by the Institute of Geobiology at some of the old, hand-gold-mining sections (see table). To purify the amalgam product from contaminated sediment, the institute developed a process to take advantage of the mercury in the gold-bearing tailings deposits and gold-bearing tailings deposits in the concentrator and associated useful minerals. The process (see picture) includes: roughing and fine grinding, physical-chemical processes, filtration, drying and smelting. This process can be used to extract fine grained gold from heavy clay deposits and inclined alluvial silt deposits that can be programmed into the mill grinding section and deep into the -25, -50 and -75 washing facilities The back of the trough directly from the gold-bearing quartz sulfide mineral free gold.