对某高山矿区的碱性高结合率氧化铜矿进行铜物相分析和多元素分析,探明高结合率是因为铜微粒镶嵌于铜与氧化铁胶体共生沉淀生成的褐铁矿中。结合菲克定律,通过5组试验研究了不同液固比、初始硫酸浓度、浸出温度和浸出时间对矿石高温搅拌浸出的影响行为;验证得出最佳浸出条件为-200目的矿石占80%,液固比3:1,浸出时间1h,浸出温度80℃,初始H2SO4浓度120g/L,搅拌速度180r/min,此时铜浸出率75.12%,铁浸出率10.19%,吨矿耗酸量172.44kg,综合效果好。
Copper phases and ultimate analysis of a kind of high associative copper oxide in an alpine mine is carried out, the analysis indicates that copper and iron oxide agglomerated to symbiotic sediments wherein cupric micro - particles are affinitive to the limonite. Based on the Fick's theory, five batch experiments are conducted to study tile influences of variable liquid -solid ratios, initial acid concentrations, temperatures and leaching time on agitation leaching of minerals at elevated temperatures. Additionally, the conflrmative experimental results show that the optimal condition is 80% of particle within 200 mesh screen, liquid - solid ratio of 3 : 1, leaching time of 1 hour, temperature at 80℃, initial acid concentration of 120g/L and agitation rate of 180r/min. Under this condition, general effect is proved by copper recovery of 75.12%, iron recovery of 10.19% and acid consumption of 172.44 kg for 1 ton mineral.