Medium density control for coal washing dense medium cyclone circuits

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Zhang, Lijun and Xia, Xiaohua and Zhang, Jiangfeng (2015) Medium density control for coal washing dense medium cyclone circuits. IEEE Transactions on Control Systems Technology, 23 (3). pp. 1117-1122. ISSN 1063-6536 (https://doi.org/10.1109/TCST.2014.2349793)

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Abstract

The dense medium cyclone (DMC) process used in coal beneficiation plants is studied from a control system perspective. Employing the dynamic model of the DMC process derived from mass flow balance, a model-based control strategy is proposed. The controller adjusts the density of medium used to enhance separation in the DMC process according to measurements on percentages of different components in raw coal. The first objective of the control is to maintain the carbon content in the clean coal to a set level. The second purpose is to minimize energy consumption of the DMC process in view of the fast increasing electricity price. The controller solves an optimization problem formulated to determine the density of medium whenever new measurements are available. Both coal quality and DMC operational constraints are accounted for. Simulations, based on measured plant data, are carried out to verify the feasibility and effectiveness of the control strategy designed. The results show that the designed controller is able to fulfill its purpose satisfactorily when the characteristics of the raw coal varies and when measurement uncertainties are in presence.

  • Item type:Article
    ID code:53776
    Dates:
    Date
    Event
    May 2015
    Published
    17 April 2015
    Published Online
    11 August 2014
    Accepted
    Notes:(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:15 Jul 2015 15:38
    Last modified:11 Nov 2024 11:06
    URI:https://strathprints.strath.ac.uk/id/eprint/53776
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