Title:
リファイナの制御
Document Type and Number:
Japanese Patent JP2004504509
Kind Code:
A
Abstract:
In the present invention a refiner ( 108 ) of a mechanical pulping line is supplied with a controllable acoustic source ( 14 ), arranged for emitting acoustic signals into the pulp fluid. The controllable acoustic signal is allowed to interact with the fibres in the pulp, and the acoustic (pressure) signals resulting from such an interaction is measured. At least one spectral component is measured. The measured spectral component is used to predict properties, content and/or size of the fibres. These properties may then be used to control the refiner ( 108 ) process. The used acoustic signal has preferably a wavelength that is large compared with a typical site of the particles.
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Inventors:
Rillenberg, Thomas
Bacca, Stephan
Segele, Renato
Obom, Mats
Bacca, Stephan
Segele, Renato
Obom, Mats
Application Number:
JP2002512675A
Publication Date:
February 12, 2004
Filing Date:
June 27, 2001
Export Citation:
Assignee:
Abby abby
International Classes:
D21B1/14; D21D1/00; D21D1/20; G01N29/02; D21D1/30; G01N29/032; G01N29/34; (IPC1-7): D21D1/20; D21B1/14; G01N29/02
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori