%0 Journal Article
%T Leaching Gold Using Oxidation Products of Elemental Sulfur in Ca(OH)2 Solution under Oxygen Pressure<br>Leaching Gold Using Oxidation Products of Elemental Sulfur in Ca(OH)2 Solution Under Oxygen Pressure
%A FANG Zhao-heng
%A Han Bao-ling
%A <br>FANG Zhao-heng方兆珩
%A HAN Bao-lin韩宝玲
%J 过程工程学报
%D 2002
%I 
%X A gold leaching process by using in situ oxidation products of added elemental sulfur in Ca(OH)2 solution was investigated. A gold concentrate containing 45 g/t Au was tested and 85%~87% of gold were leached. The leached gold depends mainly on the initial molar ratio of elemental sulfur to the hydroxyl ion, the consumption of oxygen and the reaction temperature. Adding some surfactants, such as lignosulfonic calcium, at lower concentration increased the leached Au but at higher concentration decreased it. Both of thermodynamic analysis and experimental results show that thiosulfate is the major complexing agent for gold in the process.
%K gold leaching
%K elemental sulfur
%K alkaline solution
%K oxygen pressure
%K thiosulfate<br>硫脲浸金
%K 加压浸出
%K 氢氧化钙
%K 萃取
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=F5A4D4394DBD3893E9CA788D90F7AB79&yid=C3ACC247184A22C1&vid=0B39A22176CE99FB&iid=38B194292C032A66&sid=D6354F61445E9456&eid=D9AE183D3F5C3C75&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=0