Apparatus and method in the treatment of the stock passed to...

Details Apparatus and method in the treatment of the stock passed to... Apparatus and method in the treatment of the stock passed to...

2004-02-05

2008-08-05

Hug, Eric (Department: 1791)

Paper making and fiber liberation

Apparatus

White water or broke recovery, recirculation or treatment

C162S189000, C162S190000, C162S191000, C162S380000

Reexamination Certificate

active

07407563

ABSTRACT:
An apparatus in the treatment of stock passed to a headbox of a paper machine or equivalent includes at least two stock chests (10a1, 10a2). Stock (M1) from a first stock chest (10a1) is passed along a line (a1, a2) to a hydrococyclone plant (20) in the short circulation of the paper machine or equivalent. An accept line (a3) of the hydrocyclone plant is connected with a stock line (b1) of the stock (M2) fed from a second stock chest (10a2), and a combined stock flow is passed along a line (b2) to the headbox (100) of the paper machine or equivalent. A method in the treatment of the stock passed to a headbox of a paper machine or equivalent is disclosed.

REFERENCES:
patent: 5916417 (1999-06-01), Cassidy et al.
patent: 6267845 (2001-07-01), Hautala et al.
patent: WO 01/21885 (2001-03-01), None
patent: WO 02/057542 (2002-07-01), None
patent: WO 02/072948 (2002-09-01), None
patent: WO 02/086233 (2002-10-01), None
patent: WO2004/067838 (2004-08-01), None
patent: WO 2004/072365 (2004-08-01), None
International Preliminary Examination Report issued in PCT/FI2004/000548.
Search Report issued in PCT/FI2004/000058.

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