前言 现在矿物工业比过去有更大的信心,主要是由于湿法冶金工艺能降低从低品位矿石、复合矿石或难处理矿石提取金属的费用。美国的铜工业正在证明溶剂萃取和电积法是削减生产费用的主要方法,所以在这个领域中继续在大量投资。在铜矿浸出及铜溶剂萃取方面的大量研究反映了这一倾向。 Foreword Now that the mineral industry has greater confidence than in the past, it is mainly because hydrometallurgical processes reduce the cost of extracting metals from low-grade ores, composite ores or refractory ores. The copper industry in the United States is proving that solvent extraction and electrowinning are the main methods of cutting production costs and therefore continue to invest heavily in this area. A large number of studies in copper mine leaching and copper solvent extraction reflect this trend.