Continuous production process and device for anhydrous lithium hydroxide

Abstract

The invention discloses an anhydrous lithium hydroxide continuous production process and device, and relates to the technical field of anhydrous lithium hydroxide production, and the technical scheme is characterized in that the anhydrous lithium hydroxide continuous production process comprises the following steps: putting lithium hydroxide monohydrate into a stock bin; the lithium hydroxide monohydrate in the stock bin is added into a vertical disc dryer through a feeding spiral pipe, and anhydrous lithium hydroxide is obtained; the anhydrous lithium hydroxide is cooled through a water-cooling jacket screw conveyor; removing iron from the cooled anhydrous lithium hydroxide through an iron remover; and packaging the anhydrous lithium hydroxide subjected to iron removal with a bag. Anhydrous lithium hydroxide in ton bags is loaded into a linear vibrating screen stock bin, and large materials are screened out and bagged; and the screened fine materials are subjected to iron removal through an electromagnetic iron remover. The continuous production of anhydrous lithium hydroxide can be ensured, basically no introduction increment of carbonate is realized, the battery grade standard is reached, the yield is increased, the energy consumption is reduced, and the labor intensity is low.

Description

technical field [0001] The invention relates to the technical field of anhydrous lithium hydroxide production, and more particularly, to a continuous production process and device of anhydrous lithium hydroxide. Background technique [0002] Lithium hydroxide hydrate is mainly used in the preparation of lithium-based grease and as an additive for alkaline battery electrolytes, but when lithium hydroxide is used as a carbon dioxide absorber, it is more advantageous to use lithium hydroxide anhydrate. Lithium hydroxide-type carbon dioxide absorbents have been more and more widely used due to their light weight and high absorption efficiency. [0003] At present, the production of anhydrous lithium hydroxide is mainly derived from the high temperature dehydration of lithium hydroxide monohydrate. [0004] In the prior art, due to the large water content of lithium hydroxide monohydrate, the drying process of lithium hydroxide takes a long time, and the production is intermitte...

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Problems solved by technology

[0004] In the prior art, since lithium hydroxide monohydrate has a large water mass fraction, the drying process of lithium hydroxide takes a long time and is produced intermittently, and lithium hydroxide is easily carbonized during the drying process, resulting in high energy consumption and high product quality. Low yield and high labor intensity

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