高硅氧化锌矿加压酸浸处理  

Pressure acid leaching of high silicon zinc oxide ore

作　　者：李存兄[1] 魏昶[1] 樊刚[1] 杨秀丽[1] 徐红胜[1] 邓志敢[1] 李廷[1] 李兴彬[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《中国有色金属学报》2009年第9期1678-1683,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家重点基础研究发展规划资助项目(2007CB613605);国家自然科学基金资助项目(50904030)

摘　　要：通过对广西某地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。采用加压酸浸技术对该高硅氧化锌矿进行处理,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120g/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截留率大于99.2%,浸出矿浆过滤速率大于880L/(m2-h),浸出矿浆具有良好的过滤性能。According to the mineral analysis of high silicon zinc oxide ore from Guangxi province, most of zinc exists in matters of zinc silicate and calamine.The ore was treated by oxygen pressure acid leaching.The best technology conditions are obtained by condition experiments, which are particle size 0.104 mm, sulfuric acid 120 g/L, oxygen pressure 1.0 MPa, leaching time 90 min, reacting temperature 120 ℃ and liquid solid ratio of 3：1.It can be concluded that under the best technology conditions, the leaching rate of zinc is 97% and the rate of SiO2 in solid form is above 99.2%, the slurry filtration rate is over 880 L/（m2-h） and the leaching slurry is in good filtration property.

关 键 词：高硅氧化锌矿 加压酸浸 锌浸出率 SiO2截留率 矿浆过滤性能 

分 类 号：TS972.1[轻工技术与工程] TF813[冶金工程—有色金属冶金]