【摘要】 探索了一条以磷肥副产氟化钠为原料制备工业级氟化锂的新工艺路线。研究了氢氟酸加入比例、反应液固比、反应时间、反应温度等因素对氟化锂纯度、收率的影响。获得磷肥副产氟化钠合成氟化锂的最优工艺条件,n(HF)/n(F)=15%,液固比=9~10,T=75~85℃,t=5~6 h,n(Li)/n(F)=1.05。在此条件下制得的氟化锂产品质量符合工业级氟化锂国标要求,氟化锂收率达到90%。更多还原

【Abstract】 A new process for synthesis of industrial grade lithium fluoride from a phosphate fertilizer by-product sodium fluoride is developed in this study. The influence of reaction factors on product purity and yield is explored. The optimum experimental condition is shown as follows: 15% of n( HF) / n( Na F),9- 10 ratio of liquid-solid,75- 85℃ of temperature,5- 6 hours of reaction time and 1. 05 of n( Li) / n( F). Under the optimal condition,the yield of lithium fluoride is 90% and its quality could meet the requirement of national standard of P. R. C.更多还原