发明名称 |
METHOD FOR RECOVERY OF COMPRESSION WOOD AND/OR NORMAL WOOD FROM OVERSIZE CHIPS |
摘要 |
The invention relates to a method for recovery of branch knot wood and/or normal wood from oversize chips, and according to the invention the oversize chips are ground to splinter, which then is dried and mixed with water, and then the sedimented splinter containing high concentrations of extractive substances and having a high specific weight is recovered and extracted in order to recover valuable extractive substances, particularly lignans. The lighter splinter floating up to the water surface is recovered in order to recover normal wood material for the pulp production.
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申请公布号 |
CA2446895(A1) |
申请公布日期 |
2002.02.07 |
申请号 |
CA20012446895 |
申请日期 |
2001.08.02 |
申请人 |
OY SEPARATION RESEARCH AB |
发明人 |
HOLMBOM, BJARNE;ECKERMAN, CHRISTER |
分类号 |
B07C5/16;D21B1/02;(IPC1-7):B07C5/16 |
主分类号 |
B07C5/16 |
代理机构 |
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代理人 |
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地址 |
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