Industry experts see energy consumption, particularly in melting operations, as a potential source of reduced waste and expense.


a vast majority of foundry sands are considered non-hazardous solid wastes. Individual states, however, retain regulatory authority over the materials, even when they are compa- rable in physical and chemical nature to non-regulated materials. “We’ve run into regulatory chal-


lenges, but we’ve made progress,” Lenahan said. “Everybody is into green initiatives. Te timing is right for the use of recycled sand to be accepted. I think people are more receptive to using material, but also our industry has gotten better at marketing the material.” Regulations can prove cumber-


some, but the general public has become more amendable to reus- ing an industrial byproduct. When engaging potential partners, met- alcasters are beginning to emphasize the uniformity of discarded sand and its tightly controlled properties.


Energy: The Next Frontier? Unlike the industry’s highly


optimized recycling processes with metal and sand, improved energy effi- ciency remains in the early stages of development for many metalcasters. Progress in this area can reduce waste


30 | MODERN CASTING June 2014


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