基于正交设计法的西藏玉龙铜矿酸浸工艺研究  

Sulphuric acid leaching of Yulong oxide copper ore based on orthogonal design test

作　　者：黄家全 王亚萍[1] 王铧泰[1] 彭堂见 吴学玲[1] 周洪波[1] 曾伟民[1] 

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]西藏玉龙铜矿股份有限公司,西藏昌都854000

出　　处：《有色金属科学与工程》2014年第5期123-129,共7页Nonferrous Metals Science and Engineering

基　　金：国家自然科学青年科学基金项目(31200382);国家重点基础研究发展计划(973计划)项目(2010CB630903);国家自然科学基金国际合作重大项目(51320105006)

摘　　要：为了提高西藏玉龙铜矿铜氧化矿的酸浸效率,采用正交设计法优化了酸浸过程中的各项参数,以期提高铜浸出效率,为中试及工程化生产提供理论依据.首先研究了氧化铜矿硫酸浸出的单因素最佳区间,然后针对温度、初始酸浓度、浸出时间、液固比和磨矿细度等多因素进行了正交优化.结果表明:这些因素对浸出过程均有影响,其中温度影响最大.通过参数优化,最终确定搅拌浸出最优工艺条件为:温度30℃、初始酸浓度100 g/L、浸矿时间2 h、液固比(指质量比)2∶1、磨矿细度为粒径≤74μm的物粒占65%.此时,铜氧化矿中铜浸出率可以达到79.45%.In order to improve the sulphuric acid leaching rate of Yulong oxide copper ore orthogonal experimental design is applied to optimize the parameters of the acid leaching process, which can increase the copper leaching efficiency and provide the theory basis for industrialized production. Single factor optimum interval of oxide copper ore sulphuric acid leaching is firstly analyzed and then orthogonal optimization are conducted with factors of temperature, initial acidity, leaching time, liquid-solid ratio and grinding fineness being considered. It is shown that the temperature, initial acidity, leaching time, liquid-solid ratio and grinding fineness have contributions to the copper leaching efficiency, and temperature has greatest effects on the leaching rate. When the temperature is 30 ℃, the initial acidity is 100 g/L, the leaching time is 2 h, the liquid-solid ratio is 2：1 and grinding fineness of the particle size ≤74 μm with mineral powder accounting for65 %, copper leaching efficiency can be as high as 79.45 %.

关 键 词：铜氧化矿 正交设计 硫酸浸出 浸出率 

分 类 号：TD925.7[矿业工程—选矿] TF111.31[冶金工程—冶金物理化学]