金回收: 使用TULSION® 杜笙离子交换树脂从qing化物溶液中回收金.
Gold Recovery : From cyanide liquor USING TULSION® ION EXCHANGE RESIN.
简介/ INTRODUCTION :
传统上使用活性碳吸附金子。珍贵的金会被活性碳吸附于表面,再藉由洗涤或直接焚烧以回收金。
Conventionally activated carbon is used for extracting the gold from the mother liquor commonly contacted with beds of activated-carbon. The precious noble metal loaded on the activated carbon is recovered by elution or simply by incineration of the carrier at high temperature.
使用离子交换树脂回收贵金属比活性碳还具有多方面的优势, 因为藉由特殊制造过程中, 我们可以在其结构上的有效官能基上置入具有选择性的离子,以选择性的吸附此贵重金属。
Ion exchange resins are more versatile substrates than activated carbons can be used, because specific functional groups can be afixed on the resin matrix, for better selectivity, during the synthesis. These resin can be tailor-made to improve the gold carrier features such as selectivity, resistance to poisoning by calcium or organic materials and loading capacity.
因此, 由于具有经济考虑优势, 离子交换树脂普遍被使用于贵金属回收。而大部份使用阴离子交换树脂来交换吸附贵金属。