Research on the Inter-particle Breakage of Cone Crusher Considering the Characteristics of Particle Shape Transformation

doi:10.3901/JME.2017.16.173

Abstract

Abstract: In order to describe the essence of the inter-particle breaking behavior of the materials in the cone crusher accurately, an inter-particle breakage model is established based on population balance theory and inter-particle breakage theory, in this model a particle relative size coefficient is introduced to describe the inter-particle breakage characteristics of particles of different size, and the particle shape transformation is considered in the inter-particle breakage. An inter-particle breakage experiment using cubic and flakiness particle as crushing materials is completed to regress the model parameters. Taking ZS200MF cone crusher as an example, the characteristics of particle size distribution and the particle shape transformation behavior of granular materials of two kinds of shape are investigated by simulation, and the particle size distribution is obtained. The maximum error is 4.8% compare with the measured value, and thus the effectiveness and practicability of the model are proved. Results show that the increase of the number and the compression ratio of the break zones can reduce the effective flakiness index of the product, which provides a theoretical foundation for product quality improvement and crushing chamber design of the cone crusher.

Key words: cone crusher, effect flakiness index, inter-particle breakage, particle shape transformation

CLC Number:

TD451

ZHANG Zilong, REN Tingzhi, CHENG Jiayuan, JIN Xin. Research on the Inter-particle Breakage of Cone Crusher Considering the Characteristics of Particle Shape Transformation[J]. Journal of Mechanical Engineering, 2017, 53(16): 173-180.

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