Waste paper repulping
Note: The prime purpose for repulping systems is to break down waste material with minimum energy use and the least amount of fiber degradation as possible. A secondary factor is to segregate or facilitate the screening out of contaminants which should be left in as large a form as possible. Very dirty paper stock should […]
Repulper (hydropulper) operations
Influence of circulation rate or agitation: 1. The speed of developing a slurry (defibering) is roughly proportional to the intensity of the mechanical action. 2. This agitation or turbulence requirement is fundamental to repulping. — pulper operating with poor circulation is usually unsatisfactory for anything. 3. If broke or wastepaper is to be slurried, the […]
Broke related problems
1. Excess dilution in couch pit, especially when only trim is involved. — check shower control and pressures. 2. Wire pit overflow to couch pit. — correct wire pit overflow and avoid excess dilution of stock in broke system. 3. Inadequate repulping capability in couch pit. — must be modified so full width breaks can […]