Study on Preparation of Battery-Grade Lithium Carbonate from Crude Lithium Carbonate by Carbonization Decomposition Method AITranslate

Basic Information:

DOI：

Chinese Library Classification Number:TF826.3[冶金工程—有色金属冶金]

Citation Information:

Battery-grade lithium carbonate was prepared from crude lithium carbonate(80%)using carbonization decomposition method.The effects of washing liquid-solid ratio,washing temperature,and times of washing on the purity and recovery rate of washed lithium carbonate prepared from crude lithium carbonate were studied.In addition,the effects of carbonization temperature,carbonization liquid-solid ratio,carbonization time,and CO₂gas flow rate on the purity and recovery rate of battery-grade lithium carbonate prepared from washed lithium carbonate were investigated.The results show that when washing liquid-solid ratio is 1∶1,washing temperature is 25℃,and times of washing is 4,the purity of lithium carbonate reaches 98.86%in this stage,with a lithium recovery rate of 98.9%.And under the conditions of carbonization temperature of 25℃,liquid-solid ratio of 40∶1,carbonization time of 150 min,and CO₂flow rate of 8 L/min,the purity of lithium carbonate is 99.84%with a lithium recovery rate of 96.56%.