Aluminum scrap preheating in rotary kiln improves thermal efficiency of melting furnace

Journal Article · Thu Jul 01 04:00:00 EDT 1982 · Ind. Heat. (Pittsburgh); (United States)

OSTI ID:6484258

This article discusses the use of rotary kilns for preheating or decoating of aluminum scrap and then feeding the hot scrap into melting furnaces. Also discussed is the application of rotary kilns to integrated processes in which pollution control systems are incorporated. It is a summary of the highlights of the experience gained by APROS Corp., Tustin, Calif., in designing, building and placing commercial systems into operation. Heat balances and furnace performance analysis show that there is enough waste heat in the exhaust of a typical aluminum melting furnace to preheat the scrap to 900-1000/degree/F (482-538/degree/C) and simultaneously preheat the combustion air to 800-900/degree/F (427-482/degree/C), taking into account system heat losses and air leakage. The basics of the process are described and system performance comparisons are made.

• OSTI ID: 6484258
• Journal Information: Ind. Heat. (Pittsburgh); (United States), Journal Name: Ind. Heat. (Pittsburgh); (United States) Vol. 49:7; ISSN INHTA
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
ALUMINIUM
EFFICIENCY
ELEMENTS
ENERGY CONSERVATION
ENERGY EFFICIENCY
FURNACES
INDUSTRY
KILNS
METAL INDUSTRY
METALS
SCRAP
SCRAP METALS
SOLID WASTES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES