Anhydrous lithium hydroxide production device and use method thereof

Abstract

The invention relates to an anhydrous lithium hydroxide production device. The device comprises a disc type continuous dryer, a dust remover and a dehumidifier, wherein the disc type continuous dryeris connected with the dust remover, the dust remover is connected with the dehumidifier, a pipeline between the dust remover and the dehumidifier is connected with an inert gas pipeline, a plurality of inert gas inlets are formed in the side wall of the disc type continuous dryer, and a dehumidifier extraction pipeline is connected with the inert gas inlets. The invention further provides a use method of the device, wherein the method comprises the following steps that nitrogen gas is introduced into the inert gas pipeline, and the nitrogen gas is heated and then enters the disc type continuous dryer; evaporated moisture and a small amount of dust in wet materials are brought out through the hot nitrogen gas, and then the nitrogen gas returns to a system for recycling after dust removal and dehumidifying are carried out; and the dried materials are discharged after being cooled. The device and the method can achieve the purposes of stable product quality, high yield and low energy consumption while lithium hydroxide drying is completed.

Description

technical field [0001] The invention belongs to the technical field of anhydrous lithium hydroxide production, and in particular relates to an anhydrous lithium hydroxide production device and a use method thereof. Background technique [0002] Lithium hydroxide hydrate is mainly used in the preparation of lithium-based grease and alkaline battery electrolyte additive; but when lithium hydroxide is used as a carbon dioxide absorbent, it is more beneficial to use lithium hydroxide anhydrate. In this case, as a pretreatment, a treatment of heating and dehydrating lithium hydroxide hydrate is performed. [0003] Lithium hydroxide carbon dioxide absorbent has been more and more widely used due to its advantages of light weight and high absorption efficiency. In addition, since anhydrous lithium hydroxide can generate hydrated lithium hydroxide after absorbing water, it can absorb part of the generated water in the process of absorbing carbon dioxide, and the use of it in the ma...

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Problems solved by technology

[0004] At present, the production methods of anhydrous lithium hydroxide include airflow drying method, vacuum drying method, and rotary furnace drying method. The high dust content in the middle and the difficulty of processing will reduce the product yield and have an impact on the environment. In addition, airflow drying generally consumes a lot of energy; introduce unwanted impurities into

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