Development of Mechanical Sand Reclamation System Using Roller Squeezing Mechanism

摘要

Sand reclamation is currently one of the most important technologies for nobake sand plants from the perspective of waste minimization and reuse of mold sand. Conventional sand reclamation technologies are becoming increasingly obsolete due to the increasing popularity of high adhesion nobake binders such as Phenol Nobake (PNB) process and the growing need for reusing waste mold sand due to tighter environmental standards. Consequently, advanced sand reclamation technology suitable for PNB was desired.To meet this foundrymen's desire, authors have developed advanced sand reclamation technology named Roller Squeezing Type Reclaimer. This system enables to reclaim used sand completely with lower LOI and higher mold strength. These results mean this technology contributes casting quality improvement since lower LOI eliminates gas defects caused by binder and higher mold strength eliminates sand inclusion and achieves superior dimensional accuracy.