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The surface area, size distribution and specific energy consumption for the material ground in the ball mill were used in conjunction with the single-particle data to provide an assessment of the energy efficiency of ball milling.

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Specific electric energy consumption : reduction of approx. 30 % as compared with ball mill Clinker production : increase of 60-80 % (as compared with ball mill)

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A typical comparison of three competing technologies is given in Table 1, demonstrating that an efficient ball mill/third-generation separator, CKP/ball mill/third-generation separator and vertical mill on a typical 4000Blaine limestone cement show little overall difference in energy consumption.

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