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Lithium Carbonate
Description
Lithium carbonate (molecular structure is Li2CO3, English name is lithium carbonate) as a colorless monoclinic crystal or white powder. Density is 2.11. Melting point is 618 ℃. Without deliquescence, it is stable in the air. Low solubility in water, the solubility decreases with increasing temperature. Solubility in cold water is greater than hot water. It is Soluble in dilute acid, insoluble in alcohol and acetone. Carbon dioxide is introduced into the aqueous suspension of lithium carbonate, lithium carbonate is converted to lithium acid carbonate and dissolved. If the solution of lithium acid carbonate is heated and then it releases carbon dioxide and precipitates lithium carbonate. The nature of the lithium carbonate may be used to remove impurities from lithium carbonate. Since lithium ion has a strong polarizability, thus thermal stability of lithium carbonate is worse than other alkali metal carbonate, when heated to above the melting point, it will decompose to produce carbon dioxide and lithium oxide
Chemical Properties
Lithium carbonate is a white monoclinic crystalline solid. Typically for carbonates, lithium carbonate reacts with acids stronger than carbon dioxide or carbonic acid to yield the lithium salt of the acid and carbon dioxide. The reactions may be carried out in a solution, as an aqueous slurry, or, less effectively, with solid lithium carbonate.Lithium carbonate exhibits a low water solubility for an alkali metal carbonate. The solubility decreases with increasing temperature. It is not hygroscopic and is generally stable when exposed to the atmosphere. In fact, it is the normal end compound encountered when many basic lithium compounds are exposed to the atmosphere. Lithium carbonate may be dissolved in water by conversion to the hydrogen carbonate. Releasing carbon dioxide by heating the solution of lithium hydrogen carbonate causes reprecipitation of the lithium carbonate.
Uses
The lithium carbonate industry is a global high monopoly industry, the current production capacity is mainly concentrated in three foreign manufacturers of SQM, FMC, Chemetall and so on.Industrial lithium carbonate is used in the manufacture of other lithium salts, such as lithium chloride and lithium bromide and so on. It also acts as lithium oxide materials in enamel, glass, pottery and porcelain enamel, and it is also added to the electrolytic cell for electrolysis of aluminum to increase the current efficiency and reduce the internal resistance of the cell and the bath temperature.
In medicine, it is mainly used for the treatment of mania, can improve their emotional disorders for schizophrenia. It has the effect of elevating peripheral leukocytes; can be used for synthetic rubber, dyes, semiconductor and military defense industry and so on; for the production of lithium tantalate, lithium niobate and other acoustic grade single crystal, optical grade monocrystalline etc; for preparation of the acoustic grade single crystal.
Battery grade lithium carbonate is mainly used for the preparation of lithium cobalt oxide, lithium manganese oxide, ternary materials, lithium iron phosphate and other lithium ion battery cathode materials; used in a matrix modifier; as aneuroprotective effect of lithium carbonate in amyotrophic lateral sclerosis.
Raw materials
Sulfuric acid-->Sodium carbonate-->CALCIUM CARBONATE-->Barium chloride-->Lithium hydroxide monohydrate-->BITTERN-->spodumene-->Lithium oxide
Preparation Products
Lithium chloride-->Lithium hydroxide-->Lithium hydroxide monohydrate-->Polyamide-->Lithium bromide-->Deflazacort-->1,3-CYCLOHEXADIENE-->LITHIUM MANGANESE OXIDE-->LITHIUM MANGANITE-->Lithium nitrate-->Lithium sulfate-->LITHIUM NIOBATE-->Lithium acetate dihydrate-->Lithium phosphate-->Lithium fluoride-->ethyl (Z)-oct-4-enoate-->FEMA 3148-->Lithium bis(oxalate)borate
