Particle Morphology Change and Different Experimental Condition Analysis during Composites Fabrication Process by Conventional Ball Mill with Discrete Element Method(DEM) Simulation

In order to analyze the force condition and crushing power of crusher teeth plate, the discrete element method models of jaw crusher and double-cavity jaw crusher are set up respectively using EDEM, a kind of software for discrete element analysis. Meanwhile, the working process, the loading force on the teeth plate and crushing power are simulated. The results show that: the rationality of the DEM simulation is declared, and the crushing process of the particles is also shown intuitively. The loading force condition and the crushing power of the moving jaw teeth plate serve as basis for its abrasion and energy consumption respectively.

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A Study of the Effect of Mineral Particle Shapes on Breakage Rate in Ball Mill Using DEM

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.658.198 ◽

2013 ◽

Vol 658 ◽

pp. 198-201

Author(s):

Hong Cheng Li ◽

Wei Min Dong ◽

Xing Ping Xie

Keyword(s):

Discrete Element Method ◽

Ball Mill ◽

Great Influence ◽

Discrete Element ◽

Mineral Particle ◽

Regular Tetrahedron ◽

Breakage Rate ◽

Impact Energies ◽

Particle Shapes ◽

Element Method

In order to investigative the effect of mineral particle shapes to breakage rate of ore, basing on discrete element method, comparative grinding experiments were performed separately in a laboratory ball mill under the same conditions of mass and feed by using regular tetrahedron, parallelepiped and sphere as models of mineral particle. This study shows that ore grain shapes have a great influence on breakage rate due to different impact energies in ball mill.

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Study on the Particle Behavior in a Screw Conveyer System by the Discrete Element Method

ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D ◽

10.1115/ajk2011-12015 ◽

2011 ◽

Author(s):

Yusuke Shigeto ◽

Mikio Sakai ◽

Shin Mizutani ◽

Seiichi Koshizuka ◽

Shuji Matsusaka

Keyword(s):

Discrete Element Method ◽

Large Scale ◽

Discrete Element ◽

Dem Simulation ◽

Memory Space ◽

Industrial Systems ◽

Simulation Techniques ◽

Conveyer System ◽

Grain Model ◽

Element Method

Large amount of particles are used in the industrial systems. Numerical analyses of these systems are expected to reduce designing cost. However the numerical analysis of powder is not used practically, because it requires high calculation cost which grows up with the number of particles. Besides, there are memory consumption problem which is required for calculation space. In this paper, the parallel simulation techniques of the Discrete Element Method (DEM) on multi-core processors are described. In the present study, it is shown that the algorithm enables all the processes of the DEM to be executed parallel. Moreover, a new algorithm which makes the memory space usage effectively and accelerates the calculation speed is proposed for multi-thread parallel computing of the DEM. In the present study, the memory space usage is shown to be reduced drastically by introducing this algorithm. In addition, the coarse grain model which emulates original particles with less calculation particles is applied in order to reduce calculation cost. For the practical usage of the DEM in industries, the simulation is performed in a large-scale powder system which possesses a complicated drive unit. In the current study, it is shown that the large scale DEM simulation of practical systems is enabled to be executed by our proposing algorithms.

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