Indium Enrichment Technology: Improvent and Application

A description is made of the present situation and existing proble ms of indium enrichment of Zhuzhou Smelter. A further discussion is made of how to improve the technology to increase indium residue's grade and indium recovery . Compared with the original technology, it is shown that the new indium enrichm ent technology can improve greatly the grade of indium residue and the indium re covery, that is to say, the former increases from 2.23% in 1995 to 4.11% in 2001 and the latter from 41.64% in 1995 to 62.49% in 2001. New suggestions are made for the high acid indium-leaching technology.