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从提金厂氰化过程排放的废污水中回收氰化物既具有环保意义又具有经济价值。在本研究中,离子交换法作为一种经济的、适用性强的回收方法被用来回收含铜金矿石污水中的氰化物。本研究结果证明,强碱性和弱碱性离子交换树脂,尤其是前者,在从废液中分离铜氰络合物方面,以及使用不同的洗提剂进行洗提时具有一定的潜力。推荐3种药剂:NaCN、NaSCN和NaNO3作为树脂的洗提剂,选择工业污水作为负载溶液进行研究。当使用强碱性树脂(LewatitMP 5 0 0 )作为离子交换剂、NaSCN作为洗提剂从工业污水中回收铜氰络合物时,可以得到比较高的回收率:每一段的回收率都在90 %以上。对树脂进行多个负载和洗提循环时会产生一些问题,并且,使用未经过滤的负载溶液时,在经过若干次循环操作之后,树脂的性能将会恶化
It is of both environmental and economic significance to recover cyanide from the waste water discharged from the cyanidation plant of Ti-Jin factory. In this study, ion exchange was used as an economical and adaptable recovery method to recover cyanide from effluent from copper-bearing gold ore. The results of this study demonstrate that strong and weakly basic ion exchange resins, especially the former, have some potential for the separation of copper cyanide complexes from spent effluents and the use of different eluents for elution. Three chemicals are recommended: NaCN, NaSCN and NaNO3 as resin eluents, with industrial wastewater as the loading solution. When using strong alkaline resin (LewatitMP50) as ion exchanger and NaSCN as eluent to recover copper cyanide complex from industrial wastewater, high recovery can be obtained: the recovery rate of each section is 90 %the above. Some problems arise when the resin is subjected to multiple loading and elution cycles, and when unfiltered loading solutions are used, the performance of the resin will deteriorate after several cycles of operation