Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1988-08-18
1990-09-04
Alvo, Steve
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
162 47, 162 52, 162 60, D21C 708, D21C 714, D21C 902, D21C 1100
Patent
active
049542192
ABSTRACT:
Method for transferring fibrous materials transportable with a liquid between various treatment stages, preferably from digesting (10-16) to a subsequent treatment (38) by means of circuits of circulating liquid. Material from one or several discontinuous treatment steps (10-16) are supplied to a subsequent continuous treatment step the material being fed into the continuous step (38) by displacement by means of a liquid portion (36) withdrawn from the said step.
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patent: 3537953 (1970-11-01), Brown et al.
patent: 4057461 (1977-11-01), Richter
patent: 4078964 (1978-03-01), Gloersen
patent: 4100016 (1978-07-01), Diebold et al.
patent: 4123318 (1978-10-01), Sherman
patent: 4138311 (1979-02-01), Neno
patent: 4284120 (1981-08-01), Gloersen
Alvo Steve
Beloit Corporation
Campbell Raymond W.
Veneman Dirk J.
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