【摘要】 硫化锌精矿和由传统流程得到的中浸渣混在一块,对其进行了浸出的小型试验。试验在不同的条件下进行,以考察影响浸出的各种因素,包括浸出温度、浸出时间、氧分压和搅拌速度。试验在一个两升的高压釜内进行。试验结果表明了硫化锌精矿和中浸渣能相互促进浸出,但只有在一定的浸出条件下这种耦合作用才表现得比较明显。研究过程中一些机理也得到了证实。最后为了后面的扩大试验提供了关键的浸出条件:浸出温度135℃;浸出时间2h;氧分压0.8MPa;初始酸度120g/L。更多还原

【Abstract】 Lab-scale simultaneous leaching of zinc sulfide concentrate and neutral leaching residue obtained by traditional roast-leach-electrowin(RLE) were performed in various conditions to investigate leaching variables such as leaching temperature,leaching duration,oxygen partial pressure and stirring rate.Experiments were carried out in a 2-liter autoclave.Experimental results show that zinc sulfide concentrate and the neutral leaching residue help each other to leach in such simultaneous leaching experiments,but the coupling effect occurs obviously only in a given leaching conditions.In this work some mechanisms are proved in the experiments.For the sake of subsequent scale-up experiment,the reasonable condition of simultaneous leaching is given as follows.leaching temperature,135℃;leaching duration,2hr;oxygen partial pressure,0.8 MPa;initial acidity,120g/l.更多还原