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Using cohesive strength, wall friction, compressibility, internal friction, and permeability test results, and in some cases, DEM (discrete element method) modeling, functional design recommendations including dimensions, angles, materials of construction, and feeder details are provided.
Rotary testers do a poor job of measuring wall friction, and permeability testers are difficult to find. I have drawings and parts lists for wall friction and permeability testers that can be fabricated from readily available, inexpensive components or I can recommend testers that are commercially available.
I have access to Rocky DEM modeling tools to design transfer chutes and other equipment and testers to calibrate DEM inputs.
Caking problems are challenging because unwanted agglomeration is not always immediately evident. I can find causes and propose remedies. The adjacent photograph shows modifications to a 30-gal drum that reduces the compaction pressure inside.