Abstract
In this paper, the dewatering and screening process of vibrating-dewatering screen is studied by the combination of simulation test and physical experiment. The simulation model of dewatering screening process is established by the method of computational fluid dynamics (CFD) and discrete element method (DEM). Subsequently, the screening efficiency and processing efficiency are defined as evaluating indexes for performance of dewatering and screening. Four parameters of amplitude, vibration frequency, vibrating direction angle and slope angle of screen surface are selected for single factor simulation test, and the variation of dewatering and screening performance under different parameters is obtained. Finally, the reliability of the simulation results is verified by the physical experiment platform, and significant factors affecting the evaluation index of the vibrating-dewatering screen parameters and the optimal parameter combination are obtained by orthogonal test.
Highlights
The main function of vibrating-dewatering screen is to dewatering, desliming the materials such as sand aggregate, fine coal slime, and mineral ore, so as to improve the quality of the products and the effect of the products. It is widely used in industries such as washing sand in sand and stone plants, coal slime recovery in coal preparation plants, and tailings dry discharge in mineral processing plants etc
The purpose of this paper is to study the influence of these parameters on the evaluation index and find the optimal combination of parameters, so as to provide reliable research method for the design and manufacture of industrial vibrating-dewatering screen
According to the current situation of simulation test research, this paper proposes a screening efficiency formula based on time factor
Summary
The main function of vibrating-dewatering screen is to dewatering, desliming the materials such as sand aggregate, fine coal slime, and mineral ore, so as to improve the quality of the products and the effect of the products. It is widely used in industries such as washing sand in sand and stone plants, coal slime recovery in coal preparation plants, and tailings dry discharge in mineral processing plants etc. Dong et al.[1,2] developed a vibrating-dewatering screen with a unique structure that uses side plate beam excitation. Zhou and Liu[4] replaced the frame screen plate with a flat screen plate structure to improve the structure of the biaxial
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