Ribbon Blender Mixing Particle Size
Particle size is also an important consideration in mixing solid. Attempting to mix large solids with finely divided solids can lead to segregation once the mixing action is ceased. Fines can work their way through the larger particles and settle out. The settling will also be affected by ratio of the fines to the larger particles.
Consider a mixture of perfect spheres which would have a free void space of about 26%. If the fines volume is 24%, they will fill the void spaces and have no place to migrate or settle. If on the other hand there were only 5% fines, there would be ample void space for the solids to move and settle out. Particle shape and density will also affect the settling. One simple way to avoid segregation is have the various components be of similar size and avoid the creation of free spaces.
For special mixing applications such as powdered metals or friable materials, consider our Rota-Cone® Blenders or CrossMix® Fluidizing Mixers.
For viscous or heavy paste mixing we offer Double-Arm Mixers & Extruders.
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Paul O. Abbe designs and manufactures ribbon blenders which are ideal for blending dry, free-flowing solids with bulk densities up to 70 pounds per cubic foot (1.1 g/cc) depending on material characteristics including, particle size, size distribution and particle shape (morphology), angle of repose, cohesiveness and moisture level. Ribbon blender are used for all dry foods products, nutraceuticals, protein powder mixes, dry juice mixes, chemicals, fertilizer, insecticides, colorants, resins and polymers. The moderate shear of the ribbon or paddle naturally breaks down lumps and agglomerates. Ribbon blenders are extremely efficient and economical.
Tumble Blenders include the original ABBE Rota-Cone® Double Cone Blender and the Rota-V Blenders. Tumble blending offers the lowest shear method of mixing friable or delicate solids. The simple double-cone or V-designs provide complete discharge. Because there is no agitator there are no seals and they are easily inspected and cleaned. For these reasons, Tumble Blenders are often employed by the food and pharmaceuticals industrie
The CrossMix® is a twin-paddle mixer that gently lifts and fluidizes solids in a weightless zone where particles of any size or shape can move freely and mix rapidly. Mixing can be completed in as little as 7 to 20 seconds. The CrossMix® is most beneficial for solids that require very high homogeneity, are fragile such a
Aaron Process LNG Laboratory Mixers are available in working capacities from 1/4 gallon to 2 gallon. 1/4 gallon and 1 gallon models are available from stock and furnished with variable speed drives, stainless steel construction and jackets as standard. These units are ideal for research and development, testing new raw materials or scaling up production size batches