DARREN CONSTANTINO

摘要

Realizing a market for manufactured sand, Tilcon New York purchased an air classifier for its Pompton Lakes, N.J., operation. With more than a dozen quarries serving New York City, the lower Hudson Valley, Long Island, central and northern New Jersey and eastern Pennsylvania, Tilcon New York is one of the region's larger and more successful suppliers of crushed stone, sand and gravel, asphalt, and recycled materials. For nearly a half-century, the company's Pompton Lakes, N.J., quarry has had a proven track record processing granite/gneiss for both internal use and outside sale, but recently chose to augment its product line with manufactured stone sand. Making such a change was not in itself significant. What was significant is that it chose to bypass traditional wet classification methods, opting instead to go with a dry classifier to create its product. The result has been a high-quality product that is virtually impossible to keep in stock and a dramatic savings in manufacturing and processing costs.