A Review: Preparation Technology of Ceramic Microspheres

doi:10.19691/j.cnki.1004-4493.2025.02.007

China's Refractories ›› 2025, Vol. 34 ›› Issue (2): 38-44.DOI: 10.19691/j.cnki.1004-4493.2025.02.007

A Review: Preparation Technology of Ceramic Microspheres

GUO Yusen, WANG Li, LIU Shijie, ZHANG Keke, XU Biao, WEI Haoyu, YAN Miaoxin, QIN Feng, GENG Shangrui, YIN Chaofan, DONG Binbin^*

Luoyang Institute of Science and Technology, Luoyang 471023, China

Online:2025-06-15 Published:2025-06-16
Contact: *e-mail: dongbb@lit.edu.cn
About author:Guo Yusen, born in 2001, is a student at Luoyang Institute of Science and Technology, mainly engaging in the research of porous ceramic materials.

Abstract

Abstract: Ceramic microspheres not only have excellent properties of ceramic materials (low density, large specific surface area, high strength, high hardness, as well as good chemical stability, high temperature resistance and wear resistance), but also have many advantages of microspheres due to their sphericity, making them widely used in nuclear industry, biology, medicine, chemical industry, military industry, environmental protection and many other fields. This paper mainly introduces several methods for preparing ceramic microspheres, including the methods of forming spheres using crystallographic principles, such as the sol-gel method and polymerization-induced colloidal aggregation method; the methods of forming spheres through extrusion, friction, collision and other mechanical forces, such as the air grinding method and die pressing method; and the methods to form spheres using the principle of surface tension, such as the spray drying method and melting method. In addition, the hydrothermal method, hard template method and emulsion-gel injection molding method were also introduced.

Key words: coramic microspheres, preparation methods, research progress

GUO Yusen, WANG Li, LIU Shijie, ZHANG Keke, XU Biao, WEI Haoyu, YAN Miaoxin, QIN Feng, GENG Shangrui, YIN Chaofan, DONG Binbin. A Review: Preparation Technology of Ceramic Microspheres[J]. China's Refractories, 2025, 34(2): 38-44.

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