昆冶过去从焊锡电解液中提铟是采用传统的电解、化学法流程,回收率低、损失大。近年来,由于国内外生产铟大都采用P-204萃取工艺流程,使錮的生产技术水平有了提高,于是昆冶于1978年下半年和昆明冶金研究所一起对该流程进行试验。但在试验过程中发现还有如下缺点:(一)溶液中的酸全部被中和,不能利用,(二)因中和而 In the past, Kunye Metallurgical Co., Ltd. extracted indium from the solder electrolyte using the traditional electrolysis and chemical process, with low recovery rate and large loss. In recent years, due to the domestic and foreign production of indium most of the P-204 extraction process, so that the production technology has been impaired, so Kun Ye in the second half of 1978 and the Kunming Institute of Metallurgy together to test the process. However, in the course of testing, there are still some disadvantages as follows: (1) all the acids in the solution are neutralized and can not be utilized; (2)