TREATMENT OF RECIRCULATED FILTRATES IN PULP PRODUCTION

Title:

TREATMENT OF RECIRCULATED FILTRATES IN PULP PRODUCTION

Document Type and Number:

WIPO Patent Application WO2000043589

Kind Code:

B1

Abstract:

The present invention relates to a method of treating pulp. The method according to the invention is particularly well suited for intensifying the washing of fiber suspensions in the wood processing industry in cases where liquid recycled from later washing stages is used as washing liquid. According to a preferred embodiment of the invention part of the washing liquid to be fed to a washer is separated to form a separate flow, which is divided into a cleaner and a fouler fraction that are returned to appropriate locations of the process.

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Inventors:

PIKKA OLAVI (FI)
TERVOLA PEKKA (FI)
VEHMAA JANNE (FI)

Application Number:

PCT/FI2000/000045

Publication Date:

October 12, 2000

Filing Date:

January 20, 2000

Export Citation:

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Assignee:

ANDRITZ AHLSTROM OY (FI)
PIKKA OLAVI (FI)
TERVOLA PEKKA (FI)
VEHMAA JANNE (FI)

International Classes:

D21C9/02; D21C11/00; (IPC1-7): D21C11/00; D21C9/10

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