Selective Recovery of Metals in Gold Refining Processes using Adsorbents.

金矿选矿包括破碎、磨矿、氰化浸出、回收矿浆中的碳和电选矿。这种方法是大多数此类行业使用的主要金分离程序之一。矿石中其它金属离子在上下游过程中的干扰对生产过程效率有显著影响。大量的重金属离子存在于下游（尾矿）过程中。这已被确定为需要克服的挑战。在浸出前或浸出后的上游工艺中选择性去除金矿石中的金属离子，将显著提高金的质量。分离这些金属离子可产生具有经济价值的副产品。我们计划开发和使用新型吸附剂，可以从含有金属离子的混合物溶液中特异性地回收有价金属。从金矿石生产线上选择性回收部分金属离子，也将提高加工工艺和生产成本。这将提高黄金的产量和质量。在浸出之前或浸出之后立即去除干扰金属离子，然后再进行精炼，这将提高黄金的回收率，并为公司和当地经济带来额外的收入，因为这些金属有自己的市场。计划的程序还将改善废水处理出水的质量。在本研究中，将开发一种新型的环境友好型吸附剂，能够在复杂的金属离子混合物中选择性吸附重金属。Goldcorp的Musslewhite部门非常热衷于解决干扰金属离子问题，以提高其流程的效率，并可能从中获得经济效益。我们的初步研究表明，新型吸附剂对实验室模型样品是有效的。

Gold ore processing includes crushing, grinding, leaching by cyanidation, carbon in pulp recovery andelectrowinning. This method is one of the major gold separation procedures used by most such industries.Interference of other metal ions in the ore in upstream and downstream processes has a significant effect on theproduction process efficiency. A substantial amount of heavy metal ions is present in the downstream (tailing)process. This has been identified as a challenge that needs to be overcome. Selective removal of the metal ionsfrom the gold ore in the upstream process before leaching or after leaching will significantly improve goldquality. Separation of these metal ions can lead to a by-product of economic value. We plan to develop and usenovel adsorbents that can specifically recover valuable metals from solution containing mixture of metal ions.Selective recovery of some metal ions from the production line of gold ore will also improve the processingand cost of production. It will enhance the yield and the quality of gold. Interfering metal ions removal beforeleaching or immediately after leaching before refining will enhance gold recovery and will lead to additionalrevenues for the company and the local economy as these metals have a market of their own. The plannedprocedure will also improve the quality of the effluents from the wastewater treatment. In this study, novelenvironmentally friendly adsorbents capable of selective adsorption of heavy metal in a complex mixture ofmetal ions will be developed. The Musslewhite unit of Goldcorp is very keen to address interfering metal ionsissues to increase the efficiency of their process and potentially derive financial benefits from the same. Ourpreliminary studies have shown the novel adsorbents to be effective on laboratory model samples.