The paper mill waste recycling disposal system provided by Harden is mainly used for pulper rope and light reject produced in the production process of paper mill. It adopts large-scale double shaft shredder as core equipment, which can be controlled by program based on different material properties. After the processes of conveying, shredding, dispersing, magnetic separation and screening, etc., the metal and other mixture will be fully separated with solid recovered fuel (SRF), so as to realize the recycling process of paper mill waste.