METHOD AND APPARATUS FOR RECLAIMING GYPSUM FROM WASTE WALLBOARD

摘要

This invention pertains to a method and apparatus for reclaiming gypsum from waste paper laminated gypsum wallboard. The invention is directed to an apparatus that is useful for separating paper laminate (14, 16) from gypsum wallboard comprising: a roller (2) and a plate spatially disposed from the roller (2). The aperture between the roller (2) and the plate is sized to be slightly less than the wallboard thickness thereby creating a fracturing action between the gypsum (18) and the paper laminate (14, 16). The first roller (2) can be driven by a power source. A roller (6) can be substituted for the plate and can be undriven or driven independently of the first roller (2).