Study on the Control of Chloride Ion in the Production Process of Battery-grade Lithium Carbonate
With the rapid development of the new energy industry,the demand for battery-grade lithium carbonate products is growing day by day.In the current mainstream process of lithium extraction from spodumene to produce battery-grade lithium carbonate,due to the introduction of sodium chloride in industrial sodium carbonate in the lithium precipitation process and the continuous recycling of mother liquor in the process,chloride ions are seriously enriched in the system.By introducing the corrosiveness and harmfulness of chloride ion in industrial production,the control method of chloride ion content in the production process of battery-grade lithium carbonate was studied.The results show that the highest concentration point of chloride ion is in the process of sodium sulfate evaporation,and the mother liquor after sodium sulfate separation is partially treated,which can effectively and flexibly control the chloride ion concentration in the process.
battery-grade lithium carbonateenrichmentchlorine corrosionchloride ion control
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