发明名称 |
METHOD OF MAKING MECHANICAL PULP |
摘要 |
The making of mechanical pulp from softwood intended for coated light-weight paper (LWC), for uncoated calendered magazine paper (FSC) or the like is carried out in several steps as follows: a) impregnation (2) of chips with water in combination with complex-forming agent; b) refining-of the chips with double-disc refiner (3); c) fractionating screening (6-10) of the pulp; d) refining (12,14) of the screen reject in two steps, at high and, respectively, low concentration; e) screening (15) of the refined reject and combining with the accept from the screening (6-10) according to step c). |
申请公布号 |
CA1315583(C) |
申请公布日期 |
1993.04.06 |
申请号 |
CA19890588744 |
申请日期 |
1989.01.20 |
申请人 |
SUNDS DEFIBRATOR AKTIEBOLAG |
发明人 |
DANIELSSON, KNUT O.;FALK, BO G. S.;JACKSON, MICHAEL |
分类号 |
D21B1/02;D21B1/14;D21B1/16 |
主分类号 |
D21B1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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