A Preparation System for Grinding Brittle Materials to Submicron and Nano Particles via Mechanical Comminution

7th Annual International Conference on Materials Science and Engineering

Hu, Guoming^1^2 ; Jian, Bin^1 ; Wan, Hui^2 ; Fang, Ziqiang^3

School of Power and Mechanical Engineering, Wuhan University, No.8 South East Lake Road, Wuhan

430072, China^1

Suzhou Institute of Wuhan University, Dushu Lake Higher Education Town, Suzhou Industrial Park, Jiangsu

215123, China^2

School of Electromechanical and Architectural Engineering, Jianghan University, Wuhan Economic and Technological Development Zone, Hubei

430056, China^3

关键词: Different sizes;    Grinding media;    Grinding time;    Laboratory scale mills;    Rotational speed;    Stirred media mill;    Strength characteristics;    Ultrafine particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012146/pdf
DOI  :  10.1088/1757-899X/562/1/012146

来源: IOP

【 摘 要 】

Among industrial and laboratory-scale mills currently employed for producing submicron and nano particles, the high energy media mills occupy an important place. The strength characteristic of ultra-fine particles of brittle materials is analyzed, and the size effect of ultra-fine particle is considered. A kind of high energy media mills i.e. a stirred media mill designed and manufactured. Based the stirred media mill, the corresponding process route by wet grinding and the preparation system via mechanical comminution for grinding submicron and nano particles of brittle materials are proposed and built. Experiments were made through the stirred media mill with different size of the grinding media and at different levels of rotational speed of the mill and the grinding time, and at a fixed filling ratio with unitary size of the grinding media. From the experiment results, it is expected that the preparation system and the corresponding process route based on the stirred media mill is suitable to grind particles to submicron and nano size range for brittle materials.