| 摘要 |
Refiner comprising relatively rotatable inner 2 and outer 3 conical refining blades. The refining blades 2, 3 being coaxially arranged around a symmetry axis 6 and being provided with first bars 200 and second bars 300, respectively, for grinding of fibrous material. The inner conical refining blade 2 or any of the first bars 200 of the inner conical refining blade 2 extends further along the symmetry axis 6, in the direction of the tapering of the inner 2 and outer 3 conical refining blades, than the outer conical refining blade 3 or any of the second bars 300 of the outer conical refining blade 3. |
