Apparatus and method for recycling gypsum wallboard

Details Apparatus and method for recycling gypsum wallboard Apparatus and method for recycling gypsum wallboard

1999-08-16

2000-12-26

Hail, III, Joseph J.

Solid material comminution or disintegration

Processes

Plural successive comminuting operations

241 2419, 241 73, 2411522, B02C 1800

Patent

active

061645729

ABSTRACT:
An apparatus and method for recycling gypsum wallboard is described and claimed. Gypsum wallboard is formed from a gypsum core sandwiched between two sheets of heavy paper. The apparatus has a crushing means to crush the gypsum core of the wallboard and shred the paper covering. A grinding means further pulverizes the gypsum into a powder and tears the shredded paper into pieces that are approximately one and one-half inch in diameter. The pulverized gypsum admixed with paper pieces can be collected and used in recycled wallboard. Optionally, a separator can be included in the apparatus which isolates the gypsum powder from the paper pieces. Methods for recycling gypsum wallboard using the claimed apparatus are also described.

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