Ribbon Blender RB300 (Twin-Shaft Industrial Powder Mixer)
The RB300 is a 300 L twin-shaft ribbon blender designed for homogeneous batch mixing of dry powders and granules with low shear, supporting consistent distribution of minor ingredients without damaging fragile particles. Dual helical ribbon elements mounted on parallel shafts improve cross-sectional material turnover across the entire trough width, helping achieve repeatable and consistent mixing when processing ingredients with different bulk densities or particle size distributions.
The RB300 functions as an industrial ribbon blender for powders and granules, providing reliable batch mixing performance and uniform ingredient distribution in food, bakery, confectionery, and general industrial powder processing applications where batch consistency and controlled mixing conditions are required.
Twin-shaft industrial ribbon blender for powders, granules and controlled liquid additions
Ribbon mixing uses continuous folding, radial displacement, and axial material movement created by inner and outer helical ribbon elements. This convective mixing mechanism enables efficient redistribution of material throughout the entire batch volume and supports homogeneous mixing of ingredients with different physical properties.
The twin-shaft configuration improves material circulation throughout the mixing chamber, supporting faster homogenization and improved distribution of minor components compared to conventional single-shaft ribbon mixers.
Compared to a single-shaft ribbon blender, the twin-shaft configuration:
This mixing principle is widely used in industrial powder processing applications including confectionery premixes, cocoa and sugar blends, bakery ingredient formulations, seasoning blends, and other dry ingredient processing operations.
RB300 includes a helical discharge screw integrated along the trough axis to support controlled and complete emptying after mixing. This improves discharge efficiency, reduces residual product retention, and supports repeatable batch operation. Larger ribbon blender capacities up to 1000 L are available depending on process requirements.
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RB300 ribbon blender - technical features
RB300 technical drawing
Application and process considerations for RB300 ribbon blender
The RB300 ribbon blender is designed for batch mixing of dry powders and granules where homogeneous distribution is required without high shear, particle degradation, or excessive heat generation. The twin-shaft ribbon configuration promotes convective material movement across the full trough cross-section, ensuring uniform mixing when processing ingredients with different bulk densities, particle sizes, or ingredient proportions.
Typical applications include:
The twin-shaft ribbon arrangement improves material exchange throughout the batch volume, helping reduce concentration gradients and ensuring consistent product quality.
When incorporating liquid components such as oils, flavors, or functional additives, dosing should be controlled and evenly distributed across the powder bed. Limited liquid addition can be accommodated without significantly affecting powder flow behavior, provided mixing parameters, fill ratio, and dosing location are properly defined to prevent localized agglomeration or over-wetting.
Mixing performance depends on selecting appropriate operating parameters based on material characteristics and process requirements, including:
Proper selection of operating parameters ensures reliable mixer performance, uniform product quality, reliable discharge and repeatable industrial batch processing.