May 20, 2019
The cupola furnace was the primary method of melting used in iron foundries. Its continuous operation, high melt rates, low operating costs and ease of operation made it popular, though in recent years its use has seen a decline due to electric induction melting.
Cupola cast is defined as clean cast iron scrap such as columns, pipes, plates, and castings of a miscellaneous nature, including automobile blocks and cast iron parts of agricultural and other machinery. Cupola cast scrap must be free from stove plate, burnt iron, brake shoes or foreign material. It should be sized, not over 24 inches x 30 inches, and no piece over 150 pounds in weight, as specified by the Institute of Scrap Recycling Industries.
Cupola cast is traded in a number of markets that Scrap Price Bulletin covers. In consumer delivered markets, it is bought and sold in Pittsburgh, Chicago, and Philadelphia. In the broker’s buying market, it is bought and sold in Detroit, Buffalo, New York and Birmingham. Prices delivered are also available for export yards in Boston and domestic consumers in Los Angeles.
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