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Abstract. The ball mill in closed circuit with hydrocyclones is an industry standard, and well known methodologies exist for equipment sizing, selection and design however, the potential to improve the capacity of ball mill circuits by replacing cyclones with screens has been recognised for many years and recently has been successfully realised, thanks to developments in fine screening

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An industrial ball mill operating in closedcircuit with hydrocyclones was studied by five sampling surveys. The aim of the present study was to optimise operating parameters (i.e. charge volume, makeup ball size regime, slurry mean residence time, number of hydrocyclones in operation and hydrocyclone''s feed solids content (S f)) with respect to increasing throughout from 225 to 300 tons

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An industrial ball mill operating in closedcircuit with hydrocyclones was studied by five sampling surveys. The aim of the present study was to optimise operating parameters (i.e. charge volume, makeup ball size regime, slurry mean residence time, number of hydrocyclones in operation and hydrocyclone''s feed solids content (S f)) with respect to increasing throughout from 225 to 300 tons

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Running continuously since its installation in 1988, the control system utilises industrial IBM 80286 personal computers to regulate a grinding circuit comprising twelve 16.5 ft x 24 ft single stage ball mills in closed Circuit with inclined hydrocyclones.

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Grinding control strategy on the conventional milling circuit With the increase in ratio set point, a decrease in Cyclone 1 Circulating load control The only manipulated variable available in the closed milling circuit (ball mill 2) is the cyclone dilution water flow rate.

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Grinding control strategy on the conventional milling circuit With the increase in ratio set point, a decrease in Cyclone 1 Circulating load control The only manipulated variable available in the closed milling circuit (ball mill 2) is the cyclone dilution water flow rate.

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