Lithium carbonate production process has a salt lake brine extraction process, solid ore extraction process.

1, salt lake brine extraction process

Salt lake brine lithium extraction process refers to the extraction of lithium carbonate from the lithium-containing salt lake brine and other lithium salt products. At present, the world's salt lake brine extraction technology is mainly used in precipitation (carbonate precipitation, aluminate precipitation, boron magnesium and boron lithium *** precipitation method), calcination leaching method, carbonation, solvent extraction method, ion exchange method, etc., of which solvent extraction and ion exchange method has not been achieved in large-scale industrial applications.

2, solid ore extraction process

Ore extraction of lithium is mainly used lithium pyroxene, lithium mica and other solid lithium ore production of lithium carbonate and other lithium products. Lithium resources from the ore extraction has a long history, the technology is also more mature, the main production process has lime sintering method and sulfuric acid method, of which the sulfuric acid method is currently the main method used.

Use of lithium carbonate

Lithium carbonate can be used for lithium compounds and enamel, glass manufacturing, is the raw material for the production of lithium compounds and lithium metal, can be used as an electrolytic bath additive for aluminum smelting. Widely used in glass, ceramics, medicine and food industry, can also be used for synthetic rubber, dyes, semiconductors, military defense industry, television, atomic energy, medicine, catalysts and other aspects. It is used to produce acoustic grade single crystal and optical grade single crystal.

Battery grade lithium carbonate is mainly used in the preparation of lithium cobalt, lithium manganate, ternary materials and lithium iron phosphate and other lithium-ion battery cathode materials. High-purity lithium carbonate is mainly used in the preparation of high-end lithium-ion battery cathode materials and the preparation of battery-grade lithium fluoride; in terms of optoelectronic information, high-purity lithium carbonate is used in the preparation of lithium tantalate and lithium niobate; at the same time, high-purity lithium carbonate is also used in the optical special glass, magnetic materials industry and supercapacitor, pharmaceutical industry, and so on.