高硅低品位氧化锌矿氧压酸浸研究  

PRESSURE ACID LEACHING OF HIGH SILICON LOW GRADE ZINC OXIDE ORE

作　　者：李存兄[1] 魏昶[1] 樊刚[1] 李旻廷[1] 李兴彬[1] 李勇[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,昆明650093

出　　处：《矿冶》2009年第2期45-49,共5页Mining And Metallurgy

基　　金：国家重点基础研究发展计划(973)资助项目(2007CB613605)

摘　　要：通过对广西某地低品位高硅氧化锌矿矿物分析可知,矿物中的锌主要以硅锌矿和异极矿的形式存在。采用氧压酸浸技术对该矿进行了处理,条件试验研究得出最佳工艺条件为:矿物粒度0.104mm,硫酸浓度120 g/L,釜内压力1.0MPa,浸出时间90min,反应温度120℃,液固比3∶1。综合性试验研究得出:在最佳工艺条件下,锌浸出率可达97%以上,SiO2浸出率低于0.8%,浸出液产液速率大于880L/(m2.h),浸出矿浆具有良好的过滤性能。According to the mineral analysis of high silicon low grade zinc oxide ore in Guangxi province, most of zinc exists in matters of zinc silicate and calamine. The ore is treated by oxygen pressure acid leaching and the best technology conditions are obtained by condition experiments, which are particle size is 0. 104mm, sulfuric acid concentration is 120 g/L, oxygen pressure is 1.0MPa, leaching time is 90min, reaction temperature is 120℃, ratio of liquid to solid is 3： 1. It can be conclude that under the best technology conditions , the leaching rates of zinc and SiO2 are above 97% and below 0.8% separately, liquid producing rate is over 880L/（m^2·h） and the leaching slurry is in good filtration property.

关 键 词：高硅氧化锌矿 氧压酸浸 矿浆过滤性能 

分 类 号：TF111.315[冶金工程—冶金物理化学]