Chip screening method and plant

Details Chip screening method and plant Chip screening method and plant

2005-06-21

2005-06-21

Walsh, Donald P. (Department: 3653)

Classifying, separating, and assorting solids

Sifting

Feeding

C209S257000

Reexamination Certificate

active

06907995

ABSTRACT:
A chip screening method and plant wherein the pin chips (9) are separated from the rest of the chips and dosed among chips that are to be led to a subsequent process (7) so that the share of the pin chips (9) relative to the total amount of chips (7) does not exceed a desired value. After the screening process, a desired amount of pin chips (20) is dosed among the chips that are to be led to a subsequent process (7) without intermediate storage.

REFERENCES:
patent: 4043901 (1977-08-01), Gauld
patent: 4235707 (1980-11-01), Burke, Jr.
patent: 4266413 (1981-05-01), Yli-Vakkuri
patent: 4396501 (1983-08-01), Morey
patent: 4927534 (1990-05-01), Riihimaki
patent: 5203965 (1993-04-01), McCowan
patent: 5232097 (1993-08-01), Tohkala
patent: 6170667 (2001-01-01), Bilak et al.
patent: 8402093 (1984-06-01), None
SCAN-CM 40:94 (Scandanavian Pulp, Paper and Board Testing Committee) Wood chips for pulp production (Rev. 1994).

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