The model DCB double-cone tumble blender from Charles Ross & Son Co. is designed for large-scale yet intimate blending of free-flowing solids in a full suite of laboratory, pilot, and production sizes. In a highly repeatable process, according to the company, minor and micro ingredients are thoroughly distributed throughout the batch more gently than in the more common V-shaped geometry without damaging fragile or sensitive components.

Rated for vacuum up to 29.5"Hg, the jacketed 75-cu-ft model DCB-75 double-cone tumble blender shown here reportedly heats and dries product with superior efficiency as it is being blended. Other features include gas purging capability, a 16-in. pneumatically operated discharge valve, 5-passage rotary union, explosion-proof brake motor, and PLC controls.