塩化トリオクチルメチルアンモニウムを用いたチオ硫酸アンモニウム水溶液からの金の溶媒抽出(第一報) : 塩化トリオクチルメチルアンモニウムによる抽出特性

概要

論文の詳細を見る
Hydrometallurgical process as like a solvent extraction is very important to recovery precious metals from raw materials and metals scraps. Recently, authors have ever indicated the leaching process of gold by using ammonium thiosulfate solution from sponge gold, low concentrate ore and electronics scrap.In this study trioctylmethylammonium chloride (TOMAC, (C8H17)3CH3NCl) was used as an extractant to extract gold from ammonium thiosulfate leaching solution. The influence of TOMAC concentration, retention (shaking) time, stripping process, multi stage extraction tests were investigated. It was found that the effective conditions for gold solvent extraction by TOMAC, such as 0.18 mol / l TOMAC diluted with n-octane at organic and water phase ratio of 1 : 1 could extract more than 99% of gold from the ammonium thiosulfate leaching solution at standard leaching condition (1.0 mol / l S2O32-, 0.03mol / l Cu2+ ion and 3.0mol / l NH3/NH4+ at pH10.5).
社団法人資源・素材学会の論文
2004-07-25