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Tub Grinder Performance with Crop and Forest Residues

1982; Volume: 25; Issue: 6 Linguagem: Inglês

10.13031/2013.33751

2151-0059

J. F. Arthur, R Kepner, J. B. Dobie, Gabriel Miller, P. S. Parsons,

Agricultural Engineering and Mechanization

ABSTRACT TWO sizes of tub grinders were used to grind selected agricultural crop and forest residues, using screens with hole diameters of 12.7, 19.1, 50.8, and 76.2 mm. Information was obtained on grinding rates, grinder energy requirements, and particle size distributions and bulk densities of the ground materials. In most of the tests, fuel energy input to the grinder represented only 0.7 to 2.1 percent of the higher heating value of the ground material. Except when using the smallest screen hole sizes, estimated costs for the grinding operation were in the range between $5/Mg and $13/Mg.