摘要
以ClO2为浸出剂,研究了焙烧后的复杂硫化金精矿的浸出动力学。试验确定极限搅拌速度为800r/min,反应表观活化能Ea=21.783 kJ/mol,Cl-和ClO2的表观反应级数分别为0.62和1.22,金的浸出速率方程为1-3(1-xB)2/3+2(1-xB)=4.56e-21783/RT.c0.62(Cl-).c1.22(ClO2).t。研究表明,金的浸出过程受固膜传质控制。
The kinetics experiments of leaching gold with C1（）2 from roasted complicated sulphide gold concentrate were carried out. The experiments come to the conclusions that the leaching maximum stirring velocity is of 800r/min, the leaching apparent activation energy is of 21. 783 kJ/mol and the apparent reaction progressions of C1 and C102 are of 0. 62 and 1.22,and the velocity equation of leaching gold is of 1-3（1-xB）^2/3＋2（1-xB）-4.56e^-21/83RT·c^0.62（Cl^-）·c^1.22（CIO2）·t. The research results showed that the leaching process of gold from the concentrate is under the control of mass-transfer of solid stratum.
出处
《湿法冶金》
CAS
北大核心
2010年第2期79-83,共5页
Hydrometallurgy of China
关键词
二氧化氯
复杂硫化金精矿
金
浸出
动力学
chlorine dioxide
complicated sulphide gold concentrate
gold
leaching
kinetics
