Aluminium hydroxide drying system

Abstract

The invention discloses an aluminium hydroxide drying system in order to solve the problems that aluminium hydroxide air drying requires long process route, has low production efficiency and consumes considerable energy, and that water in dried aluminium hydroxide cannot meet the requirements of aluminium hydroxide production with a dry method. The aluminium hydroxide drying system comprises a blower, a hot blast heater, a flash dryer, a double-swirl dryer, a cyclone separator, a material bin, a cloth bag dust remover and a draft fan, wherein the blower is connected with the hot blast heater, the hot blast heater is connected with the flash dryer, the flash dryer is connected with the double-swirl dryer, the double-swirl dryer is connected with the cyclone separator, the cyclone separator is connected with the cloth bag dust remover, and the cloth bag dust remover is connected with the draft fan. The invention has the advantages of short process flow, fully closed drying process, no impurity intrusion, high finished product quality, excellent operation environment, high thermal efficiency, short drying time and excellent energy saving effect.

Description

technical field [0001] The invention relates to an aluminum hydroxide drying system. Background technique [0002] Aluminum hydroxide is one of the main raw materials for the production of dry aluminum fluoride, and its moisture content is 5-10%. The process of dry aluminum fluoride production requires that the raw material aluminum hydroxide must be dried to make the moisture content less than 0.1% before it can be used. in production. [0003] The usual method of drying aluminum hydroxide is air drying. The heated hot air flows at a high speed in the pipeline. After entering the pipeline, the wet material is carried to the outlet of the pipeline by the high-speed airflow. In this process, due to the effect of convective heat and mass transfer, the water Steam is evaporated. Since the material enters the pipeline and is dispersed by the high-speed airflow, the two are fully mixed, and the gas-solid two-phase separation is carried out at the outlet of the pipeline with a c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an aluminum hydroxide drying system to solve the problem of long process route, low production efficiency, and large energy consumption in air-drying aluminum hydroxide, and the moisture content of aluminum hydroxide after drying is difficult to meet the production requirements of dry-process aluminum fluoride. The problem

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