Method and apparatus for separating adhered paper from paper cov

Details Method and apparatus for separating adhered paper from paper cov Method and apparatus for separating adhered paper from paper cov

1994-10-24

1997-01-14

Husar, John M.

Solid material comminution or disintegration

Processes

Selective or differential comminution of mixed or bonded solids

241 2412, 241 27, 241 73, 241 79, 241 884, 2411891, B20C 1900, B20C 1912

Patent

active

055930964

ABSTRACT:
Adhered paper is separated from paper covered gypsum board by hammermilling the gypsum board through holes of a hammermill grate, the hole size being selected to produce a screenable mixture of pieces of paper and separated gypsum board particles. The mixture may then be screened to segregate the pieces of paper from the particles.

REFERENCES:
patent: 3337139 (1967-08-01), Lloyd et al.
patent: 3790091 (1974-02-01), Law et al.
patent: 4522344 (1985-06-01), Morey
patent: 4801101 (1989-01-01), Dreyer et al.
patent: 4807817 (1989-02-01), Schoewe
patent: 5064126 (1991-11-01), Hickey et al.
patent: 5238195 (1993-08-01), Knez, Jr.

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