Solid material comminution or disintegration – Processes – With classifying or separating of material
Patent
1992-11-18
1993-08-24
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
With classifying or separating of material
241 30, 241DIG38, B02C 2300
Patent
active
052381951
ABSTRACT:
A method for recycling wallboard employs a tumbling barrel for receiving wallboard pieces and metal weights. The tumbling barrel is sealed and the barrel is rotated so as to drop the weights against the wallboard. Once the materials are separated into gypsum and relatively large pieces of paper, the barrel doors are opened and the materials are transferred to a vibrating conveyor including a number of filtering screens for segregating the gypsum and the paper. Reclaimed gypsum from this process then may be mixed as a large portion of the total gypsum used in the manufacture of new wallboard.
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Domtar Gypsum America Inc. Tacoma Plant Tour Guide brochure 4 pp.
Chin Francis
Knez Building Materials Company
Rosenbaum Mark
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