ROSS Mixers has introduced a custom coaxial mixer with an innovative concentric-shaft configuration that effectively blends, disperses, and homogenizes materials by combining two synergistic agitation technologies. Designed for use in industries, such as adhesives, sealants, coatings, composites, cosmetics, and pharmaceuticals, the coaxial mixer enables processors to handle a wide range of rheologies while offering a variety of different flow patterns.
The mixer’s agitation system consists of two independently driven components: a heavy-duty two-wing anchor with triangular cross-section and a pitched-blade propeller assembly. Each agitator is powered by a 15-HP explosion-proof motor, with the outer agitator producing speeds up to 25 rpm, while the inner shaft turns the propellers up to 191 rpm. The mixer’s NEMA 12 control panel has two built-in 15-HP VFDs with an ethernet/IP option that allows for each agitator to be controlled either locally or remotely; displays for speed, amperage and percent load; an emergency stop button; and the appropriate safety disconnects.
The custom-built mixer has a 1,100-gallon working capacity, engineered for full vacuum operation to 29.5 inches Hg and internal pressure up to 15 psig at 300°F. The mixer’s fixed cover includes multiple access ports, including a hinged manway with safety limit switch. Product temperature is controlled via heating/cooling media passing through a two-zone stainless-steel half-pipe jacket on the sidewalls and bottom, ASME stamped for 100 psig at 300°F. A 4-inch pneumatic flush tank ball valve facilitates smooth material discharge.
