The world's first vertical roller mill with driven rollers

Abstract

As the market demands efficient, highly flexible and high capacity plants for cement production, it was time to develop an innovative drive concept to cope with these demands: the world's first vertical roller mill with driven rollers. With this concept, it is the rollers of the vertical roller mill that are driven, not - as is usually the case - the grinding table. With the roller-driven vertical mill the market is offered an innovative drive concept that is specifically suitable for reliably driving large vertical mills. In addition to the obvious advantages in terms of plant availability, this concept offers process-technological advantages and allows a highly efficient comminution process in vertical mills. Due to the variable speed drives, the concept is particularly suited to grinding plants for the production of ultrafine cements and to applications requiring the production of a wide range of the most varied cements. When the first roller-driven vertical mill was put into operation, it robustly demonstrated its mechanical functionality and operational reliability.