Title:
【発明の名称】セルローズパルプのオゾンによる処理方法
Document Type and Number:
Japanese Patent JP2547246
Kind Code:
B2
Abstract:
Method for treating with ozone a high yield finished pulp, that is to say a previously refined and purified pulp up to a refining degree required for its final utilization. The treatment is carried out in a reactor (1) consisting of a dual-screw machine, known per se, comprising inside a sleeve (7), two screws (3, 5) with parallel axes which are intermeshed and driven in the same rotational direction, and of which the helical threads present successive zones (10, 20, 30, 40) with different pitches. The pulp is introduced into the reactor at a high dryness level, preferably between 40 and 45 %. The ozone ratio may be from 2 % to 8 %. It is possible to continuously and simply obtain by implementing this method a high yield pulp having improved mechanical resistance properties.
Inventors:
DORAROTSUSHU JAN HOORU
KURUUE JAN KUROODO
KURUUE JAN KUROODO
Application Number:
JP50083888A
Publication Date:
October 23, 1996
Filing Date:
December 23, 1987
Export Citation:
Assignee:
BEGAN SEI SA
International Classes:
D21B1/16; D21B1/30; D21C9/153; (IPC1-7): D21C9/153
Domestic Patent References:
| JP5459406A | ||||
| JP5545891A | ||||
| JP5218901A | ||||
| JP531362B1 |
Attorney, Agent or Firm:
Mitsuyoshi Ezaki (1 person outside)