摘要
传统电解锰生产中,软锰矿需要经过还原焙烧将其中的Mn4+还原为Mn2+才能被稀硫酸浸出制得MnSO4溶液。利用高硫碳酸锰矿中的硫铁矿成份和浸出时产生的具有还原性的H2S和溶液中的Fe2+,可以直接浸出软锰矿中的Mn4+。经过多次实验对比,总结出了较理想的高硫碳酸锰矿与软锰矿的配矿比,既有利于高硫碳酸锰矿在浸出时产生的H2S的利用吸收,减少尾气中的H2S,给尾气处理减轻负担,又有利于保持较高的浸出率,可为高硫碳酸锰矿和软锰矿的直接浸出提供参考。
The traditional production of electrolytic manganese, pyrolusite by reduction roasting the reduction of Mn4＋ to MnZ^can be prepared by dilute sulfuric acid leaching solution of MnSO4 IS generated by the high sulphur manganese carbonate in pyrite composition and leaching reduction during H2S and the solution of Fe^2＋, can be directly leaching pyrolusite in Mn^4＋. After many experiments, summarized the ore matching the ideal high sulphur manganese carbonate and manganese ore ratio, utilization is conducive to high sulphur manganese carbonate ore produced in the leaching of H2S absorption, to reduce the emission of H2S, to reduce the burden of tail gas treatment, and is conducive to maintaining high leaching rate, provide reference directly leaching for the high sulphur manganese carbonate ore and pyrolusite.
出处
《四川有色金属》
2014年第3期38-40,共3页
Sichuan Nonferrous Metals
关键词
高硫碳酸锰矿
软锰矿
氧化性
还原性
浸出率
high sulphur manganese carbonate ore
manganese ore
oxidation
reduction
leaching rate
