Method and apparatus for removing impurities from paper pulp in pulpers
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United States of America Patent
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Jun 30, 1992
Grant Date -
N/A
app pub date -
Aug 21, 1990
filing date -
Aug 21, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method and apparatus for removing impurities from paper pulp, the pulping space enclosed by a solid jacket is divided into a primary and a secondary space by means of a partition wall. Both the primary and the secondary space are provided with separate rotor units and perforated screen plates in connection with rotor units. The paper pulp to be purified is conducted into the primary space and a connection between the primary and secondary spaces is arranged within the partition wall which allows for continuous use of both spaces for removing impurities.
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