Using a software-based experiment design, the application of the leaching process for the extraction of manganese from Zinc Plant Slag (ZPS) was investigated. In this study, the effect of different parameters, i.e., H 2 SO 4 concentration, pulp density, agitation rate, temperature and reaction time, was investigated. Response Surface Methodology (RSM) based on the Central Composite Design (CCD) has been implemented to consider the main parameters. A hydrometallurgical route to manganese silicate from spent zinc plant residue has been proposed in this investigation. Based on the investigation, Mn can be extracted from ZPS in sulfuric acid without any oxidant agents. The results showed that the optimum conditions of this study are an H 2 SO 4 concentration of 2 mol/L and a solid/liquid ratio of 0.07 g/mL at 50°C for 150 min and an agitation speed of 1000 rpm. A manganese leaching efficiency higher than 83% is reached under these conditions, with a corresponding 22% iron, 23% lead, 68% zinc and 65% aluminum.
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机译：采用基于软件的实验设计，研究了浸出过程从锌植物渣（ZPS）提取锰的应用。在该研究中，研究了不同参数，即H 2 SO 4浓度，纸浆密度，搅拌速率，温度和反应时间的影响。已经实施了基于中央复合设计（CCD）的响应面方法（RSM）以考虑主要参数。在该研究中提出了一种来自锌植物残留物的锰硅酸盐的液态矿物途径。基于调查，可以从硫酸中的ZPS中萃取Mn而没有任何氧化剂。结果表明，该研究的最佳条件是H 2 SO 4浓度为2mol / L，固体/液体比为0.07g / ml，在50℃下为150分钟，搅拌速度为1000rpm。在这些条件下达到高于83％的锰浸出效率，相应的22％铁，23％铅，68％锌和65％铝。
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