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US 6,585,901 B2Granted
Method of draining water from low-consistency water-fiber suspensions
AssigneeMetso Paper, Inc.
InventorVesa Juutinen
Life of this patent
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Abstract
A method of draining water from low-consistency water-fiber suspensions, in which the water-fiber suspension is fed to a filtering surface comprising holes. The rougher fibers are first separated from the water-fiber suspension and fed to the filtering surface to form a separate filtering layer and the water-fiber suspension is led to flow through the filtering layer formed by the rougher fibers.
Claims5
A method of draining water from a low-consistency water-fiber suspension containing rougher fiber material and short fiber material and possible particulate solids, the method comprising the steps of:
- separating rougher fiber material from said water-fiber suspension;
- leading the separated rougher fiber material to a filtering surface to form a separate filtering layer of the rougher fiber material on the filtering surface, the filtering surface comprising holes through which water and the short fiber material and possible particulate solids can flow;
- and
- feeding the water-fiber suspension to the filtering surface such that the water-fiber suspension is fed through said filtering layer whereby at least part of the short fiber material and possible solids is retained in the filtering layer formed by the rougher fiber material.
1 more element
Dependencies are inferred from the claim text.