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1 Physicochemical Problems of Mineral Processing

1 2024

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Research on separation mechanism of coal gangue photoelectric sorting recognition

Zhou Wei, Wang Haoyu, Wang Lingling, Feng Anan, Li Liansheng, Zhu Jinbo

Physicochemical Problems of Mineral Processing

2024

Vol. 60, iss. 4

art. no. 192417

Efficiently realizing the separation of coal gangue is a hot issue in coal preparation. To solve this problem, this paper proposes research on the identification and separation of minerals in coal gangue based on dual-energy X-rays, and conducts experimental research on four single minerals and several different composite minerals in coal based on the identification technology in the sorting process of the system, and conducts a simulation study on the jet separation simulation for the separation technology in the separation process of the system. Based on the coal gangue photoelectric separation test platform, the main minerals in coal gangue were analyzed. Based on MATLAB software, the grey value of the mineral was obtained, the curve between the grey value and the thickness was made, the mass absorption coefficient of the mineral in the high and low energy regions was obtained by regression analysis, and the R value identification threshold of single mineral and composite mineral was established, which provided a theoretical basis for the accurate identification of coal gangue. The parameters of the jet nozzle were analyzed and optimized through fluid simulation, and the optimal parameters for the rapid separation of coal gangue were determined.