I have a mixture of powders, with facets and spherical shapes. Is it possible to separate them using sieve shake with standard meshes? Or else what could be done?
I understand from the facet term is flake morphology. İf particle size is different of spherical and flake powders, you can separate this powder mass by sieve analysis. However, you can be used the irregular morphology term for your mixture in the research work. It should be noted that your conclusions will not same the other work in which used the same particle size but homojeneous powder mixture (100% spherical or 100 % flake powders).
Spherical particles typically have a greater tendency to roll, compared to faceted particles of about the same size and density, except for cohesive powder. A rotary screen may therefore show some degree of selectivity for suitable mesh size and operatory conditions, although it can not be expected, in principle, to attain highly efficient separation. Also to be considered may be preliminary grinding, since it is often able to reduce the size of faceted particles more efficiently and faster than that of spherical particles, thus allowing late successful application of vibrating screens due to the generated size difference. Alternatively, froth-based flotation or elutriation can be seemingly also considered, since spherical particles exhibit different drag and interface tension behaviour. Again, selectivity may possibly be not high, mainly because size and density are also influent for the performance of these methods. Shape-based separation of small particles is often not particularly efficient, and it may be preferable to promote separation based on other convenient property.
I also wish to learn about shape separation technique for powders. There must be some fundamental methods of separation based on powder shape and morphology. It will be great if anyone share this knowledge.
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