Tony Brooks asks about a Carpenter's Concentrator, apparently
used in the Victorian Goldfields.
The following could all be a series of red herrings, but here goes:
My copy of Peele's Mining Engineers' Handbook (Third Edition), on
page 35-24, referring to centrifugal dryers, mentions Carpenter and
Elmore dryers, and on the next page gives some operating results
of Carpenter dryers. However, these were drying coal fines in the U.S.
My copy of Taggart's Handbook of Mineral Processing, 1945 edition,
makes no mention of Carpenter in the index or in the section on driers
(different book, different spelling!)
"The Cleaning of Coal", by Chapman and Mott (published by Chapman
& Hall, 1928) devotes three or four pages ( pp 496 et seq ) to the
Carpenter
Centrifuge, invented by H.R. Carpenter, superintendent of the by-product
plant of the Colorado Fuel and Iron Company, Pueblo, Colorado, where
six units had been in operation for four years ( i.e. since 1924 ).
This is probably no help at all, but there you go.
Tony Brewis
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