Breaking Salt Lake Brine for Key Technology of Industrialization of Battery Grade Lithium Carbonate
“This breakthrough in technology will greatly increase the level of battery-grade lithium carbonate produced in China's salt lake brines and focus on solving the application of lithium carbonate in lithium batteries, thereby effectively promoting the diversification and complication of the lithium industry chain and making lithium Upstream and downstream of the industrial chain." On the 16th, Li Jian, chief engineer of Qinghai Lithium Company, said in an interview with the reporter of the China New Network.
Lithium batteries have the advantages of high storage energy density, long service life, and environmental protection. New energy electric vehicles, energy storage, and 3C are the three major directions for the development of the lithium battery industry, but currently China's lithium battery industry is highly dependent on technology and raw materials. .
Qinghai is a province with large lithium resources. It has initially discovered a total of 22.48 million tons of lithium chloride, ranking first in China, and accounting for one-third of the world’s lithium reserves in salt lakes. It is understood that in recent years, Qinghai Province is mainly producing industrial-grade lithium carbonate. Qinghai Province's "123" technology support project will be the key technology project for the production of battery-grade lithium carbonate from the salt lake brine in 2011 as one of the key scientific and technological projects. The technology has now been broken.
Li Jian introduced that the Qinghai Lithium Company used lithium ion-selective membrane separation technology to obtain battery-grade lithium carbonate from salt lake brine. The original domestic ore process can only produce lithium carbonate products, while the lithium salt from Qinghai Salt Lake can achieve lithium. The comprehensive utilization of potassium and boron, at the same time, solved the problem that the raw material for lithium carbonate production by the ore process is heavily dependent on imports. The technology can be used for the separation and extraction of lithium resources in the Qaidam Basin and other high-magnesium-lithium salt lakes in Qinghai Province.
“In the original scale of 3,000 tons of lithium carbonate production, we have expanded and expanded to a production capacity of 10,000 tons of battery-grade lithium carbonate production line. The output of the product can meet the needs of lithium battery cathode material production line in the province,†said Li Jian.
It is understood that at present, Qinghai Province, CITIC Guoan Investment Co., Ltd. uses the calcining method of magnesium separation technology, Qinghai Salt Lake Group uses adsorption technology, the three technical routes have been better used in the actual production.
According to Qinghai Province announced at the end of last year, "Qinghai 100 billion lithium battery industry development plan", Qinghai will be built in China has a certain influence of the 100 billion lithium battery industry base, its terminal industry for new energy vehicles, energy storage applications, power tools , Moderately develop 3C battery applications. (Jiang Yaqin)
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