碳酸锂苛化法制备氢氧化锂的研究

Study on the preparation of lithium hydroxide via causticization of lithium carbonate

以碳酸锂、氧化钙为原料制备氢氧化锂,通过碳酸锂苛化法考察反应温度、反应时间、搅拌速率、原料比、液固比对氢氧化锂纯度和收率的影响。结果表明:碳酸锂苛化法制备氢氧化锂的优化反应条件为反应温度:105℃,反应时间:100 min,搅拌速率:500 r/min,原料比:1.250,液固比:3.0 L/mol,采用该优化反应条件制备得到的氢氧化锂纯度为99%,收率为98%。

In this paper,lithium hydroxide is prepared from calcium oxide and lithium carbonate to investigate the effects of reaction temperature,reaction time,stirring rate,raw material ratio and liquid-solid ratio on the purity and yield of lithium hydroxide via causticization of lithium carbonate.The results show that the optimum reaction conditions for preparing lithium hydroxide via causticization of lithium carbonate are as follows:reaction temperature 105 ℃,reaction time 100 min,stirring speed 500 r/min,raw material ratio 1.250 and liquid-solid ratio 3.0 L/mol.The purity and yield of lithium hydroxide gained by the optimization of reaction conditions are 99%and 98%respectively.