Production method
AssigneeBillerudkorsnas AB
InventorJohan Magnusson
Life of this patent
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Abstract
There is provided a method of producing a highly refined pulp, comprising the steps of: providing a pulp; subjecting the pulp to a first conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, such as about 1.0 mm, and a groove width of 1.0-2.0 mm, such as 1.4-2.0 mm, such as about 1.6 mm; and subjecting the pulp from the first conical refining step to a second conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, such as about 1.0 mm, and a groove width of 0.8-1.6 mm, such as 1.0-1.5 mm, to obtain the highly refined pulp.
Claims31
A method of producing a highly refined pulp, comprising the steps of:
- providing a pulp;
- subjecting the pulp to a first conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 1.0-2.0 mm;
- and
- subjecting the pulp from the first conical refining step to a second conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 0.8-1.6 mm, to obtain the highly refined pulp.
A system for producing a highly refined pulp, comprising:
- a first refining arrangement comprising at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 1.0-2.0 mm, such as about 1.6 mm, wherein the groove width is preferably greater than the bar width;
- and
- a second refining arrangement comprising at least one conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 0.8-1.6 mm,
- wherein the second refining arrangement is connected to and arranged downstream of the first refining arrangement.
A method of producing a highly refined pulp, comprising the steps of:
- providing a pulp;
- subjecting the pulp to a first conical refining step in a conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 0.5-1.5 mm;
- and
- subjecting the pulp from the first conical refining step to a second conical refining step in at least one conical refiner comprising refining plates having a bar width of 0.5-1.0 mm, and a groove width of 0.5-1.0 mm, to obtain the highly refined pulp.
A system for producing a highly refined pulp, comprising:
- a first refining arrangement comprising a conical refiner comprising refining plates having a bar width of 0.5-1.5 mm, and a groove width of 0.5-1.5 mm;
- and
- a second refining arrangement comprising at least one conical refiner comprising refining plates having a bar width of 0.5-1.0 mm, and a groove width of 0.5-1.0 mm,
- wherein the second refining arrangement is connected to and arranged downstream of the first refining arrangement.
Dependencies are inferred from the claim text.