Measuring and testing – By abrasion – milling – rubbing – or scuffing
Patent
1983-01-21
1985-04-23
Ruehl, Charles A.
Measuring and testing
By abrasion, milling, rubbing, or scuffing
73 12, 73 78, G01N 356
Patent
active
045121800
ABSTRACT:
A pellet durability tester is provided which establishes the durability of manufactured pellets by subjecting them to circulation in a closed air re-circulation path and establishing the weight ratio of whole pellets in the sample before and after testing. The tester comprises a cabinet divided by an internal partion into two compartments, with one of these compartments constituting part of the re-circulation path. The pellets to be tested are introduced into the other compartment at its top and, in one embodiment, pass over a sieve to remove lose material from the whole pellets so that only the whole pellets are deposited into a container whose weight can be measured automatically. This container tips the pellet sample into the compartment for circulation around the re-circulation path. The re-circulation path also includes a swivel head which can direct the re-circulated air and material either into the compartment or back to the sieve so that the loose material is removed and the remaining whole pellets are received in the container for weighing. In a further embodiment, the tester at least partly dries the pellet sample prior to weighing by blowing air over it.
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Holmen Chemicals Limited
Ruehl Charles A.
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