cement ball mill free drawing
Patent US Classifying liner for ball mills Google Patents. CLASSIFYING LINER FOR BALL MILLS Filed June 26, 1958 4 SheetsSheet ... of Portland cement, as Well as for use in the ceramic and mining industries. .... 1 of the drawings, all of the classifying ring elements 20, with the exception of ... the mill free of cavities and discharge grooves, and similarly at the .