摘要
为了有效利用现存的锰矿资源，以两种铁、磷含量差别较大的菱锰矿为代表，根据低磷高铁和高磷低铁两种贫锰矿石化学成分的特征，在实验室规模上研究了两种菱锰矿单独以及混合进行酸浸取制备硫酸锰以便生产电池用电解二氧化锰的基本工艺条件。提出了硫酸浸取过程中的一些主要工艺参数，在合理利用低磷高铁菱锰矿资源的前提下，用低磷高铁菱锰矿与高磷低铁菱锰矿按１．５∶１ 的比例混合，在浸取温度为９０～９５℃，浸取时间为２ ｈ，酸矿比为０．６９∶１，液固比为６∶１ 的条件下，该混合矿的碳酸锰浸取收率可大于８５％ ，总锰回收率比单独利用低磷高铁菱锰矿提高了将近１０％ ，而且反应体系过滤所需要的时间在原有基础上缩短了大约１ 倍。因此，利用低磷高铁菱锰矿生产碱性电池用电解二氧化锰是可行的。
Two rhodochrosite ores with great difference in the content of iron and phosphorous were selec ted as the representatives to be studied.According to the chemical compositions and characteristics of the ore with low phosphorous and high iron and the ore with high phosphorous and low iron,we studied the basic technological condition of making manganese sulfate for manufacturing electrolytic manganese dioxide(EMD)used for battery by immersing the two rhodochrosite ore in acid respectively and immersing their mixture in laboratory scale.Some main parameters during immersion in acid were obtained.In the prediction of reasonable utilization of the ore with low phosphorous and high iron,mix it with the ore with high phosphorous and low iron at the rate of 1.5∶1.Under the condition that the immersion temperature was between 90℃ and 95℃,the immersion time was 2 h,the acid rate of ore was 0.69∶1 and the liquid rate of the solid was 6∶1,the extraction rate of manganese carbonate from the mixed ore was over 85%.Compared with using the ore with low phosphorous and high iron independently,the overall recovery rate of manganese improved about 10% and the filtration time of the reaction system decreased about 50% of the original.So manufacturing EMD for alkaline battery from the rhodochrosite ore with low phosphorous and high iron to utilize current manganese mine efficiently is available.
出处
《电源技术》
CAS
CSCD
北大核心
1999年第6期304-306,334,共4页
Chinese Journal of Power Sources
关键词
贫锰矿
硫酸锰
工艺
酸浸
碱性电池
poor manganese ore
rhodochrosite ore with low phosphorous and high iron
rhodochrosite ore with high phosphorous and low iron
manganese sulphate
electrolytic manganese dioxide
technology
