Investigation of attapulgite clay crushing by bionic tooth plates inspired from convex structures on body surface of dung beetles
by Xingqiao Deng; Shike Wang; Jie Wang; Shisong Wang; Yucheng Liu; Ge He
International Journal of Design Engineering (IJDE), Vol. 10, No. 1, 2021

Abstract: A bioinspired tooth plate structures imitating convex structures on the head and body surfaces of dung beetles was presented and analysed using the discrete element method. Simulation results showed that compared with the regular tooth plates without bionic structures, the bionic crushing tooth plate offers a better performance and higher efficiency in crushing wet attapulgite clay. Based on the simulation results, a two-stage crushing machine was designed, produced, and validated through experiments. Experimental results confirmed that the developed crushing equipment with the bioinspired convex structures can effectively crush the attapulgite clay with high moisture content, which cannot be crushed by existing crushers due to the adhesion of the wet clay particles to the tooth plate surfaces. The produced crushing equipment has been applied for processing the attapulgite clay in China, and the design idea can be applied to develop other equipment for crushing rare earth minerals with high moisture content.

Online publication date: Thu, 25-Feb-2021

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