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Making gains with the OK MillThe mill at Orissa Cement was guaranteed to produce 212 tonnes per hour of PSC at 3800 cm2/gm Blaine without the use of grinding aid and with a mill area power consumption of 393 kWh/tonne However as shown in table 1 its operational performance has exceeded this guarantee.Modular and portable grinding station Plug and Grind25 years in the cement industry

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The power intensity of SMDs kW/m 3 is relatively high compared with other mill types but this is necessary to generate a vortex within the slurry during operation and to bring the particles

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Ideal for grinding finer products stirred mills are known for their energy efficiency and compact design resulting in reduced floor space requirements These mills are

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Mill Power Consumption Calculation Jan 01 2015 SAG mill power consumption Pc in kW in 4 grinding circuits GC1 to GC4 at different of the fresh feed in the size range −6″ 1″ −152 25 mm It is important to notice that the behaviour shown in Fig 4 is affected by the dependence of the power consumption on the mill sizes.

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Thus the power to drive the whole mill = 49.5 66.0 = 115.5 h.p = 86 kW From the published data the measured power to the motor terminals is 103 kW and so the power demand of 86 kW by the mill leads to a combined efficiency of motor and transmission of 83 which is reasonable.

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Specific power consumption for clinkergypsum grinding in a ball mill should be approximately 3000 cm2 g 24.4 kWht 3200 cm2 g 26.8 kWht 3400 cm2 g 29.4 kWht 3600 cm2 g 32.0 kWht 3800 cm2 g 34.7 kWht 4000 cm2 g 37.5 kWht Note The specific power demand of large grinding units is 10 15 better than that of small mills 8.1

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Thus the power to drive the whole mill = 49.5 66.0 = 115.5 h.p = 86 kW From the published data the measured power to the motor terminals is 103 kW and so the power demand of 86 kW by the mill leads to a combined efficiency of motor and transmission of 83 which is reasonable.

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Cement Mill Notebook Linkedin Slideshare Jan 07 2015 specific power consumption for clinkergypsum grinding in a ball mill should be approximately 3000 cm2 g 244 kwht 3200 cm2 g 268 kwht 3400 cm2 g 294 kwht 3600 cm2 g 320 kwht 3800 cm2 g 347 kwht 4000 cm2 g 375 kwht note the specific power demand of large grinding units is 1015 better than that of small mills 81

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Grinding energy was approximately 50 per cent of the ball mill and the drying capabilities allowed direct processing of materials of up to 20 per cent moisture content The main energy issue was the high power consumption of mill fans with pressure drops of 100mbar not uncommon with high nozzle ring velocities >70m/s and internal mill

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