一、前言用硫酸法从锂辉石中提取锂盐是国外广泛使用的一种生产方法。尽管这种方法存在浸出溶液杂质含量高,净化负荷量重以及硫酸烟气量大的缺点,但由于它具有物料流通量小,生产效率高,尤其是能源消耗量低等突出优点,因而现在用这种方 I. INTRODUCTION The extraction of lithium salts from spodumene by sulfuric acid method is a widely used method of production abroad. Although this method has the disadvantages of high content of impurities in the leaching solution, heavy purification load and large amount of flue gas of sulfuric acid, it has the outstanding advantages of small material throughput, high production efficiency, and especially low energy consumption, This side