Solid material comminution or disintegration – Processes – Wood and similar natural-fibrous vegetable material
Patent
1975-07-29
1977-03-01
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Processes
Wood and similar natural-fibrous vegetable material
B02C 702
Patent
active
040098354
ABSTRACT:
Continuously operating procedure for preparing hot groundwood from wood chips, wherein the chip flow is conducted into a pressurized steaming chamber, where the chips reside a few minutes and are heated to a temperature in excess of 100.degree. C, and from the steaming chamber to a sealing feeder, the rotor of which is circumferentially divided into mutually adjacent compartments, each of which in its turn fills through a feeding aperture with chips and empties in another angular position of the rotor through a discharge opening into a feeding conveyor, which carries the chips to a hot grinder, the groundwood derived from the latter being carried to further treatments, whereat the steam generated by the hot grinder and discharging from its throat in the direction against the chip flow is conducted away from the grinder. The steam is conducted through the feeding conveyor to the sealing feeder, where each compartment, as it is emptied of chips in its turn, fills with steam. The steam is drained from the sealing feeder through a steam draining aperture located in the direction of rotation of the rotor before the feeding aperture.
REFERENCES:
patent: 2008892 (1935-07-01), Asplund
patent: 3661328 (1972-05-01), Leask
patent: 3765611 (1973-10-01), Steiniger
patent: 3847363 (1974-11-01), Reinhall
patent: 3910505 (1975-10-01), Reinhall
patent: 3921918 (1975-11-01), Peterson
Custer, Jr. Granville Y.
Yhtyneet Paperitehtaat oy Jylhavaara
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