| Back a gold cyanide residue contains copper lead zinc useful minerals, such as for comprehensive recycling and utilization of mineral products, to speed up the pace of realizing the koala mines. Paper with a gold cyanide plant after cyanide cyanide tailings as the research object, to find a suitable for cyanide tailings comprehensive recovery process, through this process comprehensive recovery of lead, zinc, copper, gold, silver and other mineral products, serve as a reference for cyanide tailings resources recycling.First of all, to the ore properties analysis of cyanide tailings, pointed out that cyanide tailings containing useful minerals such as lead, zinc, copper, is of great economic value. At the same time, it is concluded that the ore fine granularity, flotation separation is difficult. To determine the optimum process for priority choose copper lead- zinc after floating separation processSecond, the priority to choose copper lead- zinc floating separation process has carried on the detailed accurate after experimental study, determines the choice of lead, copper, zinc, separating the optimum experiment conditions. Got through closed-circuit test lead in lead concentrate grade of 24.73%, recovery rate of 75.65%; Copper in the copper concentrate grade of 16.77%, copper recovery rate 60.57%; Zinc in zinc concentrate grade of 43.91%, zinc recovery rate 68.31% good test indexFinally, has carried on the experimental research on the recovery of gold and silver to lead and zinc copper, "without cyanide leaching process, get the gold and silver leaching rate in more than 90% of a good indicator.In a word, through the laboratory small test results, it can be concluded that the "flotation and leaching" joint process to comprehensive recovery of useful metals, possesses the advantages of energy conservation and environmental protection, can also create new economic growth point for the enterprise. |
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