在室内摇瓶试验的基础上,基于均匀设计的试验方案,利用马克威分析系统及EViews软件回归分析了铜矿浸出率与各影响因素之间的关系,其相关度排序为:液固比(39.2%)〉酸度(28.2%)〉温度(9.0%)〉搅拌时间(7.9%)〉搅拌速度(6.9%)。通过均匀设计软件对试验进行优化,得到该试验各因素的最优条件和铜的浸出率最大值:当酸度为60g/L,液固比为5:1,温度为80℃,搅拌时间为180min,搅拌速度为195r/min时,最大浸出率值为60%。将这一结论应用于羊拉铜矿氧化矿的实际浸铜工程,其浸出率可以达到80.1%。
Based on the Shake flask experiment and uniform design, the relationship between copper leaching rate and each factor was analyzed with Markov system and EViews software. All factors are listed in the following descending order: the liquid-solid ratio( 39.2% ) 〉acidity( 28.2% ) 〉temperature( 9.0% ) 〉stirring time( 7.9% ) 〉stirring rate( 6.9% ). After optimization with uniform design software, the copper leaching rate can be maximally up to 60% under the optimal conditions as follows : with acidity of 60 g/L, a liquid-solid ratio of 5 : 1, at a temperature of 80 ℃, slurry is stirred for 180 mins at a speed of 195 r/min. After this being applied into practical Yangla Oxide Copper Ore Engineering Project, it is found that the leaching rate can reach 80.1%.