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Metal Mine ›› 2018, Vol. 47 ›› Issue (11): 98-102.

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Prediction of the Particle Size Distribution in Batch Ball Mill Grinding

Li Pei1,Liu Jianyuan2,Zhao Ruichao3,Liang Bowen4,Wang Shaowei4   

  1. 1. Institute of Mining Technology,Inner Mongolia University of Science and Technology,Baotou 014010,China;2. Beijing General Research Institute of Mining and Metallurgy,Beijing 102628,China; 3. Testing & Analysis Center, Inner Mongolia University of Science and Technology,Baotou 014010,China; 4. School of Mining and Coal, Inner Mongolia University of Science and Technology,Baotou 014010,China
  • Online:2018-11-15 Published:2018-12-19

Abstract: It is an important direction of comminution kinetics to predict particle size distribution in grinding. A population balance model is developed based on energy input during grinding, from Herbst-Fuerstenau equation. To determine the breakage kinetic parameters (breakage rate and breakage distribution), a limited number of mono-particle-size batch grinding tests are taken; with the fitting method come up with Austin etc, the parameters are determined in all sizes, which are then introduced into the model. Grinding products size distribution model was obtained, and used to prediction, a set of verification tests are taken, and the model predicts well, proving its availability.

Key words: Comminution kinetic, Predicting model, Population balance model, Breakage kinetic parameters