首页> 中文期刊> 《中南大学学报》 >Dynamic simulation of pilot thickener operation using phenomenological model with results validation for continuous and discontinuous tests

Dynamic simulation of pilot thickener operation using phenomenological model with results validation for continuous and discontinuous tests

         

摘要

The phenomenological theory of sedimentation-thickening processes predicts the settling behavior of a flocculated suspension in dependence of two functions, the batch flux density function and the effective solid stress. These functions were determined using batch settling tests. The governing equations for sedimentation were then solved numerically for these functions and the predictions were compared to the experimental results from pilot scale thickener tests. Firstly, the continuous tests were performed in the plexiglass pilot thickener at different feed flow rates and discharge rates and the solid volume fraction of discharge,the bed height and the time were recorded for each condition. These tests were also simulated and it was observed that there is a good agreement between the results of continuous tests and the results of dynamic simulation. Secondly, the discontinuous tests were performed in the plexiglass pilot thickener at different feed flow rates with a discharge rate of zero. The bed formation rate was determined for each condition. These tests were also simulated and it was observed that there is a good agreement between the results of discontinuous tests and the results of simulation.

著录项

  • 来源
    《中南大学学报》 |2017年第5期|P.1207-1216|共10页
  • 作者单位

    [1]Department of Mining and Metallurgical Engineering, Amirkabir University of Technology,Tehran 15875-4413, Iran;

    [2]Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University,Tehran 1477893855, Iran;

    [1]Department of Mining and Metallurgical Engineering, Amirkabir University of Technology,Tehran 15875-4413, Iran;

    [1]Department of Mining and Metallurgical Engineering, Amirkabir University of Technology,Tehran 15875-4413, Iran;

    [3]Department of Mining Engineering, University of Kashan, Kashan 8731753153, Iran;

  • 原文格式 PDF
  • 正文语种 CHI
  • 中图分类 矿业工程;
  • 关键词

    dynamic simulation; dewatering; thickener behavior; pilot thickener; validation;

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