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Content archived on 2024-04-15

OPTIMIZATION OF THE PRESSURIZED GRINDING PROCESS.

Objective

TO CLARIFY THE RELATION BETWEEN THE FREQUENCY OF THE GRIT/FIBRE INTERACTION AND THE PRODUCTION RATE AND PULP QUALITY.

THE PRODUCTION OF MECHANICAL PULP BY PRESSURIZED GRINDING OF WOOD (PGW) IS A COMPARATIVELY NEW PROCESS. DATA ON THE EFFECT OF PARAMETERS, SUCH AS GRIT SIZE, SHARPENING PATTERN AND ROTATIONAL SPEED, ARE LACKING TO A GREAT EXTENT WHEN OPTIMISING THE PGW PROCESS.
IN THE FIRST PART OF THE PROJECT, TRIALS WILL BE CARRIED OUT BY COMPARING GRINDING STONES WITH THREE DIFFERENT GRIT DIMENSIONS. IN A PILOT PRESSURIZED GRINDER STONES OF THE SAME COMPOSITION BUT WITH VARYING GRIT SIZES WILL BE TRIMMED, SHARPENED AND STABILIZED STONES UNDER EQUAL CONDITIONS. WITH THE WELL STABILISED STONES PULP WILL BE PRODUCED TO VARIOUS FREENESS LEVELS AND TESTED FOR PULP AND SHEET PROPERTIES.
IN THE SECOND PART OF THE PROJECT, THE SURFACE OF ONE STONE WILL BE TREATED IN AN UNCONVENTIONAL FASHION. AFTER STABILISING THE SURFACE AND OPTIMISING THE GRINDING CONDITIONS OF THE STONE WITH THE UNCONVENTIONAL SHARPENING PATTERN, SEVERAL PRINTING GRADE PULPS WILL BE MADE IN THE PRESSURIZED GRINDING MODE.
PROCESS PARAMETERS AND PULP PROPERTIES WILL BE EVALUATED AND COMPARED TO REFERENCE PWG-PULP.

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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Call for proposal

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

CSC - Cost-sharing contracts

Coordinator

Finnish Pulp and Paper Research Institute
EU contribution
No data
Address

00101 Helsinki
Finland

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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

No data

Participants (1)

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