| 摘要 |
<p>The invention relates to a method of washing a fibre pulp mixture, in which method the fibre pulp mixture is fed between two filter wires (1, 2) running in the same direction. There is a convergent dewatering space (3) in the direction of travel of the wires, where water is removed from the pulp. According to the idea of the invention, the thickness of the pulp layer being fed between the wires is adjusted during operation, since the ash and fines content of the washed fibre pulp is essentially dependent on the basis weight of the fibre web being washed. In a preferred embodiment of the invention, the height of the slice (23) at the output end of the dewatering space is adjusted. The essential idea of another preferred embodiment of the invention is that the speed of the wires is adjusted.The invention also relates to an arrangement comprising means for adjusting the thickness of the pulp layer being fed between the wires, i.e. the basis weight of the fibre web being washed.</p> |
