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SCIENTIFIC PAPER |
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Cerig |
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Last update : January 17, 2006 |
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Modelling of agitation in the disintegration process of pulp suspensions |
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Benjamin Fabry (CTP), Maurice Renaud, Jean-Claude Roux |
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Revue ATIP vol.57, n°5, Décembre 2003-Janvier 2004 |
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In the paper industry, the pulp disintegration process occurs in the first stages in the case of a non-integrated mill. A physical description of the phenomena encountered in a disintegrator is given and applied for a laboratory-helical disintegrator with a mixture of water and glycerol.
Then, this description is extended to the pulp suspensions in the low consistency range of mass solid fraction (0% to 8%). The differences between the volumetric powers consumed to rotate a pulp and just water are studied as a function of the rotation speed and the mass solid fraction.
A global relation is given for the power ratio and a critical
volumetric power is determined.
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