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硫磺还原法从电解锰阳极泥中回收锰
Recovery of Manganese from Anode Slime of Electrolytic Manganese by Sulfur Reduction

DOI: 10.12677/AEP.2021.114076, PP. 667-675

Keywords: 电解锰阳极泥，硫磺，浸取率，曲面响应法
Electrolytic Manganese Anode Slime, Sulfur, Leaching Rate, Surface Response

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Abstract:

为了回收电解锰阳极泥中锰以达到资源化利用的目的，以硫磺为还原剂，硫酸作为反应介质，采用曲面响应法探讨了温度、时间、酸矿比和硫酸浓度对锰浸取率的影响。结果表明：各条件参数对锰的浸取率影响大小的排序为D (时间) > A (温度) > B (硫酸浓度) > C (酸矿比)。在浸取温度105℃、反应时间3 h、酸矿比1.75 (mL:g)和硫酸浓度11 mol？L-1条件下，锰的浸取率为99.93 %。用硫磺作还原剂回收阳极泥中锰，具有原料廉价易得，反应温度低，速率快，浸取率高的特点。
In order to recover manganese from the anode mud of electrolytic manganese, the purpose of uti-lizing the anode mud of electrolytic manganese is achieved. Sulfur is used as reducing agent and sulfuric acid solution is used as reaction medium. The results show that the order of the influence of the parameters on the leaching rate of manganese is D (time) > A (temperature) > B (sulfuric acid concentration) > C (acid ore ratio). The leaching rate of manganese was 99.93% at 105？C, reaction time 3 hours, acid to ore ratio 1.75 (mL:g), sulfuric acid concentration 11 mol？L？1. The recovery of manganese from anode mud with sulfur as reductant has the characteristics of low raw material, low reaction temperature, fast rate and high leaching rate.

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