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氰化物费用消耗是金选厂中主要的费用 ,确定氰化物损耗的原因可显著节约其用量。氰化物损耗的行为较复杂 ,可以包括挥发、沉淀、与金属形式络合物、氧化为氰酸盐或氨以及与硫化矿物反应形成硫氰酸盐。本文提出一种应用热力学常数和溶液分析结果的简单方法 ,确定金选厂液体和固体中氰化物的存在形式和分布率。使用所述方法对具有不同矿物学和化学成分的矿石样品进行测定和计算 ,并与使用多种方法直接测量得到的结果进行了比较。所提出的方法很容易获得不同形式氰化物分布信息。如预料的一样 ,在所研究的样品中 ,铜的三氰络合物及四氰络合物是主要的。更重要的还在于 ,由于在分析中考虑了铜 -氰化物络合物可变的平衡级 ,所以获得了铜存在下氰化物存在的形式具有重要意义。硫氰酸盐是相当数量氰化物消耗的根源。在高浓度盐溶液中 ,氰化物的挥发损失可能是很大的 ,这也可以估计到。氰化物和硫氰酸盐在固体上的吸附量也很大 ,这与有关的矿物学因素有关
The cost of cyanide is the main cost of the gold processing plant, cyanide loss can be identified because of its significant savings in the amount. Cyanide depletion is more complex and can include volatilization, precipitation, complexation with metal forms, oxidation to cyanate or ammonia, and reaction with sulfide minerals to form thiocyanates. This paper presents a simple method using thermodynamic constants and solution analysis to determine the presence and distribution of cyanide in liquid and solid gold concentrates. Ore samples with different mineralogy and chemical composition were measured and calculated using the described method and compared with the results directly measured using various methods. The proposed method makes it easy to obtain information on the different forms of cyanide distribution. As expected, the copper tri-cyanate complex and the tetracyanide complex were the main ones in the samples studied. More importantly, because of the variable equilibrium level of the copper-cyanide complex considered in the analysis, it is of great importance to obtain the form of cyanide present in the presence of copper. Thiocyanate is a source of significant cyanide consumption. The loss of cyanide volatility can be significant in high-salt solutions, which can also be estimated. The amount of cyanide and thiocyanate adsorbed on solids is also large, depending on the mineralogy involved