摘要
对贫软锰矿经两矿法处理得到的、主要成分为硫酸锰的浸出液进行了深度去除钙、镁离子的萃取工艺研究.研究结果为:以体积分数为30%,皂化率为60%的P204与磺化煤油组成有机相,在温度25℃,相比O/A为3∶1,控制料液初始pH值为6的条件下进行萃取时,钙、镁离子的萃取率分别达到99.37%和90.62%,料液中钙、镁离子的含量可以降至100ppm以下,可以得到深度去除钙、镁离子的高纯硫酸锰溶液.负载有机相经4.0mol/L的硫酸溶液反萃,金属离子基本被反萃完全.设计了利用浸出净化液及反萃液制备高纯锰化合物的经济可行的工艺流程,从而实现了硫酸锰浸出液的全流程综合应用.
This paper studied the technology of removing calcium and magnesium ions from manganese sulfate leaching solution prepared in two-ores method with poor pyrolusite.The results are as follows：using 30％ P204 added 70％ sulfonated kerosene as the extraction solvent,saponification rate 60％,temperature 25 ℃,phase ration（O/A）3 ∶ 1,and keeping pH of solution about 6.0 at the beginning,the extraction yields of the calcium and magnesium ions are 99.37 ％ and 90.62 ％ respectively.Calcium and magnesium ions content can be reduced to less than 100 ppm,and high purity manganese sulfate solution from which calcium and magnesium ions have been removed deeply can be obtained.In the loaded organic phase via 4.0 mol/L sulfuric acid stripping,metal ions were stripped completely.The economically feasible process of using the leaching purification liquid and stripping liquid to preparation of high purity manganese compounds was designed,and the whole process of integrated application of manganese sulfate leaching solution was achieved.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第12期83-88,共6页
Journal of Hunan University:Natural Sciences
基金
中央高校基本科研业务费专项基金资助项目(53110704012)
