Title:
【発明の名称】木材パルプ、とくに故紙を含む木材パルプの処理法と、それを粉砕するためのかくはん機
Document Type and Number:
Japanese Patent JP2811489
Kind Code:
B2
Abstract:
PCT No. PCT/SE89/00453 Sec. 371 Date Feb. 12, 1991 Sec. 102(e) Date Feb. 12, 1991 PCT Filed Aug. 30, 1989 PCT Pub. No. WO90/02223 PCT Pub. Date Mar. 8, 1990.In a method of treating wood-fibre pulp, particularly pulp which contains recycled paper, the pulp is dewatered and then heated by means of superheated steam under pressure prior to being passed to a disperser (10), in which the pulp is finely divided. The pulp is passed from the dispenser to a plug-outfeed screw (20) withouth separate departure of steam from the system. One end of the screw is closed by means of a valve device (21), so that the pulp carried by the screw will be compated to form a plug which seals the system. The valve device (21) located at one end of the screw (20) is constructed to open when the pressure exerted thereon by the plug exceeds a pre-determined value. The invention also relates to a disperser (10) having a substantially rectangular outlet which is connected to a plug-screw (20) of the above kind.
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Inventors:
Kurz Rudolf
Application Number:
JP50911489A
Publication Date:
October 15, 1998
Filing Date:
August 30, 1989
Export Citation:
Assignee:
Selwood Machinery AB
International Classes:
D21B1/08; D21B1/32; D21D1/30; D21B1/30; (IPC1-7): D21B1/08; D21B1/30; D21B1/32
Attorney, Agent or Firm:
Hiromichi Kuroda