Medium density control for coal washing dense medium cyclone circuits

dc.contributor.authorZhang, Lijun
dc.contributor.authorXia, Xiaohua
dc.contributor.authorZhang, Jiangfeng
dc.contributor.emaillijun.zhang@up.ac.zaen_ZA
dc.date.accessioned2015-06-04T07:35:53Z
dc.date.available2015-06-04T07:35:53Z
dc.date.issued2015-05
dc.description.abstractThe 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 account 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 fulfil its purpose satisfactorily when the characteristics of the raw coal varies and when measurement uncertainties are in presence.en_ZA
dc.description.librarianhb2015en_ZA
dc.description.urihttp://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=87en_ZA
dc.identifier.citationZhang, L, Xia, X & Zhang, J 2015, 'Medium density control for coal washing dense medium cyclone circuits', IEEE Transactions on Control Systems Technology, vol. 23, no. 3, pp. 1117-1122.en_ZA
dc.identifier.issn1063-6536 (print)
dc.identifier.issn1558-0865 (online)
dc.identifier.other10.1109/TCST.2014.2349793
dc.identifier.urihttp://hdl.handle.net/2263/45405
dc.language.isoenen_ZA
dc.publisherInstitute of Electrical and Electronics Engineersen_ZA
dc.rights© 2014 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.en_ZA
dc.subjectOptimal controlen_ZA
dc.subjectCoal beneficiationen_ZA
dc.subjectDensity controlen_ZA
dc.subjectDense medium cyclone (DMC)en_ZA
dc.subjectFeed forward controlen_ZA
dc.titleMedium density control for coal washing dense medium cyclone circuitsen_ZA
dc.typePostprint Articleen_ZA

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