技术简介

锂辉石通过转型焙烧、酸化焙烧和浸出压滤后，锂以硫酸锂的形式进入溶液中，副产高硅锂渣用于水泥等建材行业。硫酸锂溶液经过多级净化除杂后，蒸发浓缩得到净化液，净化液与碳酸钠溶液混合沉淀、干燥后得到电池级碳酸锂。净化液经氢氧化钠转型冷冻结晶后，采用二次蒸发结晶，可以得到电池级氢氧化锂。

Introduction

After transformation roasting, acidizing roasting and leaching filter pressing of spodumene, lithium entersthe solution in the form of lithium sulfate, and high-silicon lithium slag is used as a byproduct for cement andothers in the building material industry. After multi-stage purification and impurity removal, the lithium sulfatesolution is evaporated and concentrated to obtain a purified liquid, which is mixed with sodium carbonatesolution for precipitation and drving to obtain battery-evel lithium carbonate, Battery-level lithiym hvdroxidecan be obtained by secondary evaporation and crystallization after the purified liguid is mixed with sodiumhydroxide for freezing crystallization.