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specific energy consumption Ball mill (100 %) Horomill® (70 %) VRM (60 %) HPGR (50 %) specific surface Evolution of comminution technologies Chronology: Manual comminution Hammer mechanism Edge runner Ball mill Vertical roller mill High pressure grinding rolls Horomill® (ca. 1512) (ca. 1800) (ca. 1890) (ca. 1930) (ca. 1985) …

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