ROSS ribbon blender delivers uniform powder blending with load cell monitoring

The Model 42N-18 Ribbon Blender from ROSS is a stainless steel mixing system designed to provide uniform blending of powders, granules, and dry bulk solids across industrial processing applications.

The blender is engineered for atmospheric blending of free-flowing materials and offers an 18-cubic-foot working capacity with a 22-cubic-foot full holding capacity. A double ribbon agitator, powered by a 7.5-horsepower totally enclosed fan-cooled motor, provides blending speeds up to approximately 47 rpm, with variable speed control down to 5 rpm.

To improve ingredient dispersion and reduce agglomerates, the system incorporates a high-speed stainless-steel chopper mounted on the sidewall at a 45-degree angle. The four-bladed chopper operates at speeds up to 1,800 rpm and is driven by a 5-horsepower motor to support consistent batch quality.

Constructed from Type 304 stainless steel with an 80-grit interior finish, the mixing trough includes a hinged two-piece cover, an FDA-compliant silicone gasket, and NEMA 12 safety interlock switches designed to maintain dust-tight operation while supporting safe cleaning and maintenance procedures. A removable stainless-steel safety grate allows operation with the cover open while providing operator protection.

The Model 42N-18 also includes a pneumatically operated 4-inch dust-tight knife gate valve for controlled discharge and simplified cleanout. Support legs provide 48 inches of clearance beneath the discharge valve to accommodate downstream material handling equipment.

For process control and batch accuracy, the blender is equipped with a load cell system rated for 4,000 pounds. Operator controls include start/stop functions, variable-speed adjustment, forward/reverse operation, and digital monitoring of agitator speed and motor load. Two-handed pushbutton controls are provided for discharge valve operation.