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1980年初,美国亚利桑那州肯尼科特雷伊矿区(Kennecott’s Ray mjnes)溶剂萃取工厂投产。为了改善电流效率,降低成本及提高阴极质量,将溶剂萃取过程纳入已生产了11年的硅酸矿浸出车间。溶剂萃取(SX)装置投产,结束了为期二年的小型试验和中间工厂试验。在实验室研究了溶剂系统及其对铜的萃取率、选择性和夹带等方面的影响,在中间工厂着重研究了级效率、悬浮渣的产生和阴极纯度问题。本文叙述了工程项目进展、工厂设计和前半年的生产操作情况。
In early 1980, Kennecott’s Ray Mjnes solvent extraction plant was put into operation in Arizona. To improve current efficiency, reduce costs and improve cathode quality, the solvent extraction process is integrated into the silicate leach plant that has been in production for 11 years. Solvent Extraction (SX) plant was put into operation, ending a two-year pilot and pilot plant trial. Solvent systems were investigated in the laboratory and their impact on copper extraction, selectivity, entrainment, etc. The intermediate plant focused on the problems of stage efficiency, suspended slag generation and cathode purity. This article describes the project progress, plant design and production operations in the first half of the year.