%0 Journal Article
%T Gold Leaching of a Residue Containing Elemental Sulfur with Lime Added under Pressurized Oxygen<br>难处理金精矿含元素硫的酸浸渣加石灰氧压浸金
%A FANG Zhao-heng
%A LI Zhao-jun
%A SHI Wei
%A HAN Bao-ling
%A <br>方兆珩，李兆军，石伟，韩宝玲
%J 过程工程学报
%D 2002
%I 
%X A gold leaching process for an acid leached residue from an arsenic refractory gold concentrate in lime slurry under pressurized oxygen is investigated. The residue contains 17.4% of elemental sulfur. The experimental results show that the optimum quantity of lime added to the leaching solution should ensure the mole ratio of elemental sulfur to OH in the range of 0.8 to 1.1. In 3 to 5 h, 90% of gold is leached at 85C under 0.1 to 0.3 MPa oxygen pressure with the optimum lime addition in the solution. The thiosulphate produced from elemental sulfur in lime solution during oxygen leaching might be the major complexing agency for gold leaching.
%K gold leaching
%K elemental sulfur
%K lime
%K oxygen pressure<br>浸金
%K 氧压浸出
%K 元素硫
%K 石灰
%K 难处理金精矿
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=249F2B7E0218E633&yid=C3ACC247184A22C1&vid=0B39A22176CE99FB&iid=CA4FD0336C81A37A&sid=BCA2697F357F2001&eid=A04140E723CB732E&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=6