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本义采用三维钢棉阴极的园维形电解槽研究了含金<5mg/1的碱性氰化侵出液直接电积上时游离氰化物浓度、PH值、溶液导电性及贱金属杂质对金回收率的影响。在给定时间内金回收率随下列因素变化而降低:(a)PH值小于13时;(b)溶液中Fe、Cu、Zn或Hg含量超过10mg/1时;(C)游离氰化物浓度增加时,(d)溶液的导电性减小时。能够获得较高的全回收率且电能消耗较低。含金5my/1层出液电积一小时后,金回收率达到96%以上,电流效率0.33%,电能消耗112Kwh/kg。用简易反应器模型方法分析试验绘制的溶液浓度与电解时间关系曲线,计算出近似的传质系数,将计算结果与南非Mintek回收上电解槽的传质系数进行比较,运用分析数据推算直接电解所需电解面积,进而讨论工业规模稀浸出液电积装置的生产成本。
The original meaning of the three dimensional steel cotton cathodes of the park-dimensional cell electrolysis cyanide <5mg / 1 alkaline electrowinning the direct electro-deposition of free cyanide concentration, PH value, solution conductivity and base metal impurities on the gold Effect of recovery rate. The gold recovery over a given period of time decreases as a function of: (a) the pH is less than 13; (b) the concentration of Fe, Cu, Zn or Hg in the solution exceeds 10 mg / l; (C) the concentration of free cyanide When increasing, (d) the conductivity of the solution decreases. Able to achieve a higher total recovery and lower power consumption. Gold gold 5my / 1 layer of electrolyte volume an hour later, the gold recovery rate of 96% or more, the current efficiency of 0.33%, energy consumption 112Kwh / kg. The simple reactor model was used to analyze the relationship between the concentration of the solution and the electrolysis time, and the approximate mass transfer coefficient was calculated. The calculated results were compared with the mass transfer coefficient of Mintek recovery electrolyzer in South Africa. The analytical data was used to calculate the direct electrolysis rate Electrolytic area required, and then discuss the industrial-scale dilute leaching liquid volume device production costs.