Sand Reclamation System

Author:  Raymond M. Leliaert
Source:  US Patent 3,934,374
Doc ID:  1976018
Year of Publication:  1976
Abstract:  
A sand reclamation system is disclosed for reconditioning a sizing sand utilized in precision molding. The system includes particulate blasting wheels for breaking down the sand molds and reducing them to discrete particles. A conveyor, a first air wash for separating the particulate used for blasting from the granular sand and a second special air wash for separating undersized sand particles from those which may be reused for further molding. The second air wash utilized a modified air wash separator employing a surge bypass arrangement to insure a constant feed rate therethough.