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US 2024/0426050 A1Published application
A method, use of the same, a pulp composition, and a system
AssigneeMetsä Board Oyj
InventorMikko Nikamaa
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Abstract
According to an example aspect of the present invention, there is provided a method comprising: providing wood chips; impregnating the wood chips with an impregnating composition to obtain impregnated wood chips; refining the impregnated wood chips in at least one refiner to obtain a refined pulp composition; screening the refined pulp composition to obtain an accept fraction and a reject fraction; and directing at least part of the reject fraction from the screening step back to said impregnating step or to a step preceding said impregnating step.
Claims21
A pulping method comprising:
- impregnating wood chips with an impregnating composition to obtain impregnated wood chips;
- refining the impregnated wood chips in at least one refiner to obtain a refined pulp composition;
- screening the refined pulp composition to obtain an accept fraction and a reject fraction;
- and
- directing at least part of the reject fraction from the screening step back to said impregnating step or to a step preceding said impregnating step.
2 more elements
21-26. (canceled)
Dependencies are inferred from the claim text.