%0 Journal Article
%T LEACHING KINETICS OF Au-BEARING SULPHIDE CONCENTRATE BY FeCl_3 SOLUTION<br>FeCl3浸取含Au复杂硫化矿的动力学研究
%A FANG Zhaoheng
%A MUHEMMED M Institute of Chemical Metallurgy
%A Academia Sinica
%A Beijing Royal Institute of Technology
%A Sweden
%A <br>方兆珩
%A MUHEMMEDM
%J 金属学报
%D 1993
%I 
%X A process extracting Cu, Ag, Pb and Zn from a bulk sulphide concentrate with FeCl_3 solutions was investigated. The kinetics of the process and effective parameters were examined based on a model of non-reaction shrinking core and an approach of non-linear regression. It was found that the rate of Cu dissolution in the process was controlled by a sur- face reaction which was a half order with respect to Fe~(3+) ions and zero order with respect to Cl_-ions. More than 96% Cu, 95% Ag, 90% Pb and 9l% Zn were extracted while over 70% sulphide were converted to elemental S and more than 97% of Au were left in the leached residue under the conditions studied. Thus, the leaching process by FeCl_3 and NaCl solution was a more potential technology for pre-treating of Au-bearing sulphide concen- trate and recovery of valuable metals.
%K FeCl_3
%K leaching kinetics
%K Au-bearing sulphide concentrate<br>硫化矿物
%K 浸出
%K 金
%K 动力学分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=9D6A0706ECC107339AE1E4227036E820&yid=D418FDC97F7C2EBA&vid=771469D9D58C34FF&iid=9CF7A0430CBB2DFD&sid=F4B561950EE1D31A&eid=286FB2D22CF8D013&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=1