Comparison of a roller press and a vertical mill for slag grinding

Roller presses developed by KHD Humboldt Wedag (Germany) are described, and their use for grinding cement materials, including granulated blast-furnace slag. The characteristics of roller-presses and vertical roller mills, as well as their operational parameters, are compared. Special liner plating of rollers fixed with pins and the impact of high pressure on the ground material ensure efficient grinding of slag and other materials without intensive wear of the working elements (the lifetime of the roller without maintenance is 25,000 hours, and its overall service life is more than 40,000 hours).

Author: S. Seemann, S. Rebettge, Y. Reichardt, Y.V. Schegolyaev

Section: Equipment and technology

Keywords: roller press, grinding, granulated blast furnace slag, cement, wear resistance