Influence of the grinded material in the crumbling process

Mircea Fenchea

Volume 17, Issue 1;
Pages: 93-97;
ISSN: 2069-0053 (print) (former: ISSN:1453-1399), Agroprint;
ISSN (online):2068 – 9551
Hammer mills reduce the particle size of materials by impacting a slow moving target, such as a cereal grain, with a rapidly moving hammer. The transfer of energy that results from this collision fractures the grain into many pieces. Particles produced using a hammer mill will generally be spherical in shape with a surface that appears polished. This work emphasizes the influence of the restitution coefficient dependent on the grinded material in the crumbling process. Because of the energy losses during the percussion between the hammer and the material to grind the restitution coefficient goes through changes that have as an effect the accentuate abatement of the productivity of beater mills.
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