Drywall (also known as gyp board, gypsum, and wallboard) is made from a gypsum core board of varying thickness surrounded by a paper exterior on both sides.
During the drywall recycling process, the whole board is shred and the paper is screened from the gypsum. The gypsum is then screened again leaving a clast (pebble) sized product and a powder. Both of these are primarily consumed by agricultural markets.
Drywall Recycling Process
The material is spread over farm fields or mixed in mushroom house beds as a soil amendment, fertilizer, and conditioner. The paper is used as animal bedding and then fertilizer.