Abstract
A coal washing plant is studied for the purpose of reducing energy consumption while ensuring coal quality. The pumping system that supplies dense medium to the dense medium cyclone separation process, one of the biggest energy consumers in the coal washing plant, is studied in particular. The medium flow rate and density are optimized to reduce energy consumption because they are the key factors that influence both the cleaning efficiency and the energy efficiency of the DMC process. The operation problem is formulated into an optimization problem and solved using Matlab optimization toolbox. It is shown by numerical analysis that the proposed approach is effective in reducing energy consumption satisfactorily without jeopardizing the cleaning efficiency of the DMC process.
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