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据美国《国际矿物加工杂志》报道,智利圣地亚哥大学对含硫脲酸溶液中的金浓度、矿浆中活性碳以及温度、pH、吸附持续时间和其他参数对活性碳吸附酸介质中的Au/Cs(NH_2)/_2Cl络合物的影响进行了研究。指出吸附的最佳pH为1.5。随着温度从17℃上升到35℃,金回收率也有提高。这证实过程具有吸热性。当温度高于35℃时,被提出的络合物开始分解。根据分光光度计和显微镜的检查研究,可以认为活性碳可吸收Au/Cs(NH)_2/_2~+阳离子,并且在吸附过程中实际上没有发现金还原成金属金。
According to the “International Journal of Mineral Processing” reported by the United States, the University of Santiago, Chile, the gold concentration in thiourea solution, activated carbon in the pulp and temperature, pH, adsorption duration and other parameters on the activated carbon adsorption of Au / Cs (NH 2) / _ 2Cl complex was studied. The optimum pH for adsorption is 1.5. The gold recovery also increased as the temperature rose from 17 ° C to 35 ° C. This confirms that the process is endothermic. When the temperature is above 35 ° C, the proposed complex begins to decompose. According to the examination of spectrophotometer and microscope, it is considered that activated carbon can absorb Au / Cs (NH) _2 / _2 ~ + cations, and virtually no reduction of gold to metal gold was found during the adsorption process.