The water glass processing equipment, advanced technology, sophisticated stand-alone and supporting equipment. Apply to the new glass sand molding process, the main use of the multi-stage mechanical centrifugal dry regeneration as well as dry heat combined renewable. The old sand recovery equipment regenerative effect, can effectively reduce the content the Na20's the old sand, and effectively reduce the pollution the old sand discarded caused the. Old sand recycling of this equipment is mainly used for large and medium-sized cast steel foundry workshop.