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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >SART for copper control in cyanide heap leaching
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SART for copper control in cyanide heap leaching

机译：SART用于氰化物堆浸中的铜控制

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摘要

Copper cyanide is a common component of cyanide-treatable precious metal ores. The copper concentration in production heaps can be predicted from laboratory column tests, but the exact correlation is not necessarily intuitive. Generally, heap leach operators like to keep copper concentrations in solution below 300-500 ppm and may note problems with gold recovery and cyanide consumption when copper concentrations exceed this amount There are several methods of copper removal from cyanide solutions including ion exchanges direct electrowinningi acidification, volatilization, and recovery (AVR); and sulphide precipitation such as the sulphidization, acidification, recycling, and thickening (SART) process. SART involves acidification with addition of soluble sulphide, separation of the resulting copper sulphide precipitate, and addition of lime to re-establish alkalinity prior to returning the solution to the leaching process, recovering both copper and cyanide as valuable products. In principle SART is very simple. Yet some SART plants that have been built may have been unnecessarily complex. This paper explores the basics of SART and makes the case for a simple plant design as applied to the heap leaching circuit.
机译：氰化铜是可进行氰化物处理的贵金属矿石的常见成分。可以通过实验室柱测试预测生产堆中的铜浓度，但确切的相关性不一定直观。通常，堆浸操作人员希望将溶液中的铜浓度保持在300-500 ppm以下，并且当铜的浓度超过此量时可能会注意到金回收和氰化物消耗的问题。有几种从氰化物溶液中去除铜的方法，包括离子交换法，直接电winwini酸化，挥发和恢复（AVR）;硫化物沉淀，例如硫化，酸化，再循环和增稠（SART）过程。 SART涉及酸化，添加可溶的硫化物，分离所得的硫化铜沉淀，并添加石灰以重新建立碱度，然后再将溶液返回浸出过程，同时回收铜和氰化物作为有价值的产品。原则上，SART非常简单。但是，某些已建成的SART工厂可能变得不必要地复杂。本文探讨了SART的基础，并为应用于堆浸电路的简单工厂设计提供了依据。

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