中南大学学报（自然科学版）2018，Vol.49Issue(5)：1031-1036,6.DOI:10.11817/j.issn.1672-7207.2018.05.002
硫酸化焙烧氧化锰矿浸出锰的循环工艺
Cyclic process for leaching manganese by sulfation roasting of manganese oxide ore
摘要
Abstract
In order to reduce the treatment cost of manganese oxide ore and utilize waste acid from electrolysis process of manganese effectively, sulfation roasting and leaching experiments of manganese ore were carried out using cyclic process of ammonium sulfate. The results show that sodium sulfate plays a positive role in promoting sulfation roasting of manganese oxide ore and decomposition of ammonium sulfate. When roasting temperature reaches 550 ℃, leaching rate of manganese is high and it is very difficult to convert Ferric oxide into soluble Ferrous sulfate, resulting in low content of iron in leaching solution and good selective leaching result of manganese. Under appropriate sulfation roasting and leaching conditions, leaching rate of manganese and recovery of NH4+ and SO42- reaches 89.93%, 98.62% and 88.22% respectively.关键词
氧化锰/硫酸化焙烧/热力学分析/循环利用Key words
manganese oxide/sulfation roasting/thermodynamics analysis/recycling分类
矿业与冶金引用本文复制引用
张泽强,孙桦林,张汉泉,李冬莲,何东升..硫酸化焙烧氧化锰矿浸出锰的循环工艺[J].中南大学学报（自然科学版）,2018,49(5):1031-1036,6.基金项目
国家自然科学基金资助项目(51374156)(Project(51374156)supported by the National Natural Science Foundation of China) （51374156）
