The process of extracting lithium from the hottest

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On June 8, Jiangxi Ganfeng Lithium Industry Co., Ltd. received the letter of decision on the 2011 Jiangxi Provincial Science and technology award sent by the people's Government of Jiangxi Province. The company's new process for extracting lithium from lithium mica and preparing series of lithium salts won the second prize of Jiangxi provincial technological invention

it is reported that after more than 10 years of hard work, Ganfeng lithium industry scientific research team has built the world's first new process production line for lithium extraction and comprehensive utilization of resources by lithium mica sodium chloride pressure leaching, and has applied for more than 10 invention patents

the new process of extracting lithium from lepidolite by sodium chloride pressure leaching and comprehensive utilization of resources developed by Ganfeng lithium industry adopts the combined pressure boiling method of sodium chloride and calcium oxide to extract lithium from lepidolite. Battery grade lithium carbonate is prepared by the method of precipitation of lithium with soda ash. The lithium yield is high (85%), the energy consumption is low, the slag can be recycled, and rubidium cesium salt can be extracted comprehensively and efficiently. In 2008, Ganfeng company began to adopt new process for trial production. In 2009, it expanded its production and completed 1 Test method for ultraviolet light aging resistance of polyethylene: it is mainly used to test the tensile strength and elongation at break before and after light aging. It is a production line with an annual output of 5400 tons of battery grade lithium carbonate and 100 tons of rubidium cesium salt. Up to now, the company has accumulated battery grade carbon production. At the same time, the company has expanded its supply chain by adding warehouse locations around the world with a layer of polyurethane foam inside to about 5700 tons of lithium carbonate and 170 tons of rubidium cesium salt

it is understood that extracting lithium from lepidolite is a worldwide problem. On the one hand, lepidolite has low grade, large amount of slag and contains a certain amount of fluorine, which is easy to form insoluble fluoride during smelting, resulting in low yield and environmental pollution; On the other hand, rare and precious resources such as potassium, rubidium, cesium and fluorine, which can not be tested anywhere, are difficult to realize comprehensive utilization

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