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US 5,733,413 AGranted
Method for removing contaminates from aqueous paper pulp
AssigneeSoutheast Paper Manufacturing Company
InventorJ. Alan Lawson
Life of this patent
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Abstract
The present invention provides a method for decontaminating aqueous paper pulp comprising a decontaminating cell. The decontaminating cell has an upper light contaminate collection hood and/or a lower heavy contaminate collection trough. Paper pulp is provided to the cell under a pulp head sufficient to purge the contaminates therefrom.
Claims8
A method for removing light contaminates from aqueous paper pulp, said light contaminates having a specific gravity less than said aqueous paper pulp, comprising:
- a. providing aqueous paper pulp under head to an elongated cell having an exterior surface, an interior surface defining a pulp decontaminating chamber having a first cross section area, a pulp receiving end, and a pulp discharging end;
- b. purging light contaminates from an enclosed light contaminate collection hood within an upper portion of the decontaminating chamber in fluid communication with said decontaminating chamber, through an upper port by a means for selectively purging said light contaminates therethrough, wherein said upper port is disposed such that light contaminates are purged therethrough by pulp head;
- and,
- c. collecting decontaminated pulp from said discharging end of said decontaminating chamber for paper production.
1 more element
Dependencies are inferred from the claim text.