Research progress of air classification technology and equipment

Abstract An air classifier is an equipment used for separating particles of different sizes through an air flow field. It is widely used in mineral processing, food processing, fine chemical industry, biopharmaceuticals, solid waste recovery, and other fields. It plays an important role in controlling the quality of powdered raw materials. This work summarizes the research progress of static and dynamic air classifiers, including the classification of vertical and horizontal flow type gravity classifiers, centrifugal classifiers, and dynamic classifiers. It also covers the research status of key components such as rotary cages, air vanes, material dispersion mechanisms, process parameters, and internal flow fields. The analysis proposes existing problems and prospects the future development direction to provide a reference for the research of air classification technology and equipment. In the future, the research of air classifiers can focus on the kinematics and dynamics analysis of particles in the classifier, the quantitative characterization of the flow field in the classifier, and the optimization of the overall structure and process parameters.

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	FU Min
	CAO Zhong
	CHEN Xiaoqing
	GAO Zefei
	ZHAN Mingyu

Keywords： classification technology gravity classification centrifugal classification dynamic air classification eddy current field

Received 2023-05-23;

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FU Min, CAO Zhong, CHEN Xiaoqing, GAO Zefei, ZHAN Mingyu.Research progress of air classification technology and equipment[J] Chemcial Industry and Engineering, 2024,V41(4): 117-130

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