Method of measuring average particle size of granular material

Details Method of measuring average particle size of granular material Method of measuring average particle size of granular material

1990-03-20

1992-07-14

Noland, Tom

Measuring and testing

Particle size

356335, 364555, 382 1, G01N 1502

Patent

active

051292688

ABSTRACT:
A method of measuring an average particle size of granules. The method computes the average particle size on the basis of an n-order moment M.sub.n of an image of granules accumulated in a pile or of the image subjected to binarization or floating binarization. The method is capable of highly accurate and stable measurement on granules having many irregularities in the surface thereof and accumulated in a pile. The method can be used to continuously measure in real time the particle size of granules in a rotary tray of a rotary tray-type rolling granulating machine thereby adjusting the feed rate of a liquid binder to automatically control the particle size.

REFERENCES:
patent: 3377597 (1968-04-01), Muta
patent: 3782827 (1974-01-01), Nisenson et al.
patent: 4233664 (1980-11-01), Grandchamp
patent: 4239612 (1980-12-01), Goetz
patent: 4259015 (1981-03-01), Wada
patent: 4463600 (1984-08-01), Hobbs et al.
patent: 4781460 (1988-11-01), Bott

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