一、导言此项研究的宗旨是寻求采用湿式化学方法从某种铜铅锌混合精矿中提取各种金属的途径。当前,鉴于金属需求量持续增长,富矿资源消耗殆尽,以及对选厂生产提出了环保方面的种种强制性规定,因而人们正在致力于研究利用某些难选矿石的新方法。由于通常的火冶方法不能满足上述要求,因此湿式化学方法便成为此项以工业应用为目的的研究课题的主要 I. INTRODUCTION The purpose of this study is to find ways to extract various metals from a copper-lead-zinc concentrate using wet-chemical methods. At present, people are working on new ways to utilize certain refractory ores due to the continuous growth of metal demand, the depletion of rich ore resources, and various mandatory environmental protection requirements for the production of concentrates. Wet-chemical methods have become the main research topic for industrial applications because the usual fire-metallurgical methods do not meet the above requirements