The theoretical power consumption of a vertical roller mill is expressed by the formula: N = KT A z v p [kW(net)] For the vertical mill the following applies: KT: Typically 500 - 700 A = Droller W roller Droller =0.6-Do W roller = 0.2 DO Do = Mill size/10 z=3 v = n 1/60 Dm TT Dm =0.8-Do [kN/m ]

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