硫铁矿还原烧渣酸浸液试验研究  

Study on Pyrite Reduce the Acidic Leaching Solution of Cinder

作　　者：阳征会[1] 龚竹青[1] 马玉天[1] 杨余芳[1] 黄坚[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《有色金属（冶炼部分）》2006年第1期10-12,53,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：研究了硫铁矿精矿还原硫酸烧渣酸浸液及其反应机理。试验结果表明:当浸出液中Fe3+浓度为1.1 mol/L时,在液固比为3∶2、90℃、搅拌速度500 r/min的条件下,反应3 h,酸浸液中的Fe3+的还原率达到96.5%,其反应级数为1.66,表观活化能为60.26 kJ/mol。The reduction of the acidic leaching solution of cinder by pyrite concentrate and its mechanism was studied, Results show that the reduction degree of Fe^3＋~ in the acidic leaching solution can reach 96.5 % on the following conditions- Fe^3 ＋ concentration is 1.1 mol/L, liquid-solid ratio is 3：2, 90℃ , stirring speed 500 r/min and reaction time 3h. The reaction order of Fe^3 ＋ is 1.66 and the apparent activation energy is 60.26 k J/tool.

关 键 词：烧渣 硫铁矿 活化能 

分 类 号：TF111.31[冶金工程—冶金物理化学]