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    Volume 46, Issue 6 (November 2018)

    Experimental Study on Impact Crushing of Granite Particles

    (Received 23 March 2017; accepted 18 July 2017)

    Published Online: 2018

    CODEN: JTEVAB

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    Abstract

    To study the specific influences of production parameters and structural parameters on a vertical shaft impact crusher (VSI), a pneumatic impact crushing device was designed and used to study the influence of different impact velocities, impact angles, and initial particle sizes on the crushing effect for granite particles. The resulting grains size distribution (GSD) and the actual crushing ratio (ACR) were determined via mechanical sieving and image processing, where the experimental results showed that with increasing initial impact velocity the degree of fragmentation of the granite particles increased. However, when the impact velocity increased beyond a certain amount, the trend became more moderate. Further, there existed an optimum original particle size that allowed the degree of fragmentation of the particle to obtain a maximum value. Further, as the initial impact angle of the particles increased, the degree of fragmentation of granite particles exhibited a downward trend. Through the experimental study herein, it is found that the actual production parameters and structural parameters have significant effects on the impact crushing. According to these results, we can obtain valuable routines to guide the optimal design of the VSI.

    Author Information:

    Yang, Jian-hong
    Department of Mechanical Engineering, Huaqiao University, Xiamen, Fujian Province

    Chen, Qi
    Department of Mechanical Engineering, Huaqiao University, Xiamen, Fujian Province

    Zhou, Jian-hua
    Fujian South Road Machinery Co. Ltd, Quanzhou, Fengze District

    Fang, Huai-ying
    Department of Mechanical Engineering, Huaqiao University, Xiamen, Fujian Province


    Stock #: JTE20170180

    ISSN:0090-3973

    DOI: 10.1520/JTE20170180

    Author
    Title Experimental Study on Impact Crushing of Granite Particles
    Symposium ,
    Committee A01