| 摘要 |
<p>A METHOD OF RECYCLING ENGINEERED WOOD PANELS SUCH AS FIBRE BOARD RECOVERS THE CONSTITUENT WOOD FIBRES FOR RE-USE AS A SUBSTITUTE FOR VIRGIN WOOD FIBRE. THE WOOD PANELS ARE SHREDDED AND MIXED WITH WATER TO FORM A SLURRY, WHICH IS THEN HEATED BY PASSING AN ELECTRIC CURRENT THROUGH THE SLURRY TO WEAKEN THE BONDING BETWEEN THE WOOD FIBRES. THE HEATING MAY BE CARRIED OUT ABOVE ATMOSPHERIC PRESSURE. AFTER HEATING, THE SLURRY MAY BE RAPIDLY DEPRESSURIZED, E.G. BY SPRAYING THROUGH A NOZZLE, TO DRY AND SEPARATE THE FIBRES. APPARATUS IS DESCRIBED FOR CARRYING OUT THE METHOD AS A CONTINUOUS PROCESS.</p> |
