电解锰阳极液浸出菱锰矿的热力学和动力学研究

为更好地利用贵州典型菱锰矿资源,对菱锰矿中锰、镁化合物浸出热力学和动力学进行了分析,并研究了不同浸出条件对锰、镁元素浸出的影响.结果表明,锰、镁化合物浸出过程均为放热反应,同等浸出条件下,镁化合物反应趋势更大,浸出过程均符合内扩散控制模型.在酸矿比0.42、矿石粒径-0.147 mm粒级占93.50％、浸出温度80℃、...

Thermodynamics and Kinetics of Leaching Rhodochrosite from Electrolytic Manganese Anode Solution

In order to make better use of the typical rhodochrosite resources in Guizhou Province, the thermodynamics and kinetics of leaching manganese and magnesium compounds from rhodochrosite were analyzed, and the effects of different leaching conditions on the leaching of manganese and magnesium were also studied through experiments. The results show that the leaching processes of manganese and magnesium compounds are all exothermic reaction. Under the same leaching conditions, the reaction of magnesium compounds is stronger, and the leaching process conforms to internal diffusion control model. With ratio of acid to ore at 0.42, the ore particle size of -0.147 mm 93.50%, leaching at 80 ℃ for 4 h can lead to the leaching rate of manganese up to 98.74%, and the leaching rate of magnesium controlled around 75.90%.