D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
341/65
D21B 1/24 (2006.01) B02C 4/10 (2006.01) B02C 19/00 (2006.01)
Patent
CA 1261434
Abstract of the Disclosure The invention relates to a method for regu- lation of a grinding process in a pocket grinder, by which method a wood batch in at least one pocket is pressed against a rotating grindstone by means of a grinding plate movable in the pocket. Then the apparent pulp quantity produced is calculated at fixed intervals to give a grinding stroke at different measuring points, also considering the changes in wood batch density occurred during the grinding stroke at the measuring points. The value thus calculated is compared with the target value for the pulp quantity produced and the grinding procedure of the wood batch is regulated to reach the target value for the pulp quantity produced. To achieve a pulp quantity pro- duced being as even as possible, the calculated value of the apparent pulp quantity produced is corrected in relation to the hydraulic pressure used during the grinding stroke.
498114
Blomqvist Seppo
Liimatainen Heikki
Sundstrom Kaj
Vahteri Risto
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Oy Tampella Ab
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