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http://dx.doi.org/10.7844/kirr.2018.27.3.86

Simulation of Particle Behaviors within a Multi-stage Impact Crusher using Discrete Element Method  

Yu, Myoungyuol (Zero Emission Co., Ltd.)
Lee, Hoon (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.27, no.3, 2018 , pp. 86-92 More about this Journal
Abstract
The amount of construction waste generated is steadily increasing every year, and the Law for Promotion of Recycling is enacted. However, it is difficult to use it as a recycled aggregate for concrete, which is presented in the quality standard of recycled aggregate with high water uptake and low density due to low separation of aggregate between concrete and cement paste. Therefore, in this study, a multi-stage impact crusher was used to remove mortar, which is essential for improving the quality of recycled aggregate. In analyzing the characteristics of the equipment, the spectrum of energy generated in each part between the particle and the equipment was calculated by using DEM. In order to generate an effective separation phenomenon, it was confirmed that the operation condition of 900 RPM was appropriate based on the ratio of the number of collisions (L/H) of the low energy group (L) to the number of collisions of the high energy group (H).
Keywords
Recycled aggregate; Comminution; DEM; Impact Crusher;
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Times Cited By KSCI : 1  (Citation Analysis)
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