High-purity lithium carbonate is a necessity in high-tech applications in the magnetic materials industry, atomic energy industry, electronics industry, and optical instrument industry. In terms of photoelectric information, 99.999% (5N) of high-purity Li2CO3 is the main raw material for preparing surface acoustic wave elements lithium tantalate and lithium niobate single crystals. In the electronics industry, in recent years, high-purity Li2CO3 has been used as the cathode material for lithium-ion batteries (such as Li2CoO3, LiMn2O4, etc.) and electrolyte raw materials. In addition, high-purity Li2CO3 as a basic lithium salt can also be used to produce high-purity lithium chloride, lithium bromide, lithium fluoride, lithium hydroxide monohydrate and other high-purity secondary lithium salts, lithium chloride, lithium bromide and then electrolytically produced After metal lithium, many organolithium compounds can be derived, such as butyl lithium, methyl lithium and so on.