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为实现含氰污水“零排放” ,达到保护环境、充分利用资源、可持续发展的目标 ,针对蓬莱市黄金冶炼厂氰化贫液中含铜质量浓度高的特征进行了系统的试验研究。在小型试验的基础上 ,设计并实施了两步沉淀除杂全循环的工业试验 ,回收了大部分贵金属和有价的重金属 ,最大限度地回收利用了贫液中的氰化钠。在不降低金的氰化浸出率的情况下 ,使含氰污水全循环 ,实现了“零排放” ,降低了生产运行成本 ,有效地保护了水环境。
In order to achieve “zero discharge” of cyanide-containing wastewater and achieve the goal of protecting the environment, making full use of resources and sustainable development, a systematic experimental study was conducted on the characteristics of copper-containing lean solution in Penglai Gold Smelter. On the basis of small-scale experiments, the industrial experiment of two-step precipitation and impurity removal cycle was designed and implemented. Most precious metals and valuable heavy metals were recovered, and the sodium cyanide in the lean solution was recovered to the maximum extent. Without reducing the gold cyanide leaching rate of the case, the full cycle of cyanide-containing wastewater to achieve a “zero emissions”, reducing production and operation costs, effectively protecting the water environment.