Waste tires as auxiliary fuel for cement kilns
The subject I have been asked to speak about is the utilization of scrap tires as an auxiliary fuel for cement kilns. My experience with scrap tires began five years ago when we performed a technical and economic evaluation for tire pyrolysis. I work for the Idaho National Engineering Laboratory which is supported by the Department of Energy. My interest in scrap tires continued; in 1984 the Department of Energy and the Portland Cement Association jointly sponsored a conference on the utilization of scrap tires in cement kilns. Most of my remarks today are based upon that conference along with some current information in the US. Mr. Sladek requested that I speak on the combustion process, the progress to date, and the factors that impede or encourage implementation of using scrap tires in cement kilns. For discussion purposes it would help if we had a common understanding of the cement manufacturing process. Cement is made by heating a mixture of finely ground limestone and silica from clay or sand to about 1450/degree/C in a large rotating kiln. The heat causes the limestone to decarbonate and subsequently react with the silica to form calcium silicates. 5 figs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6119047
- Report Number(s):
- EGG-M-01987; CONF-8702171-1; ON: DE89010998
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
BUILDING MATERIALS
CARBONATE ROCKS
CEMENTS
CHALCOGENIDES
CLAYS
ECONOMIC IMPACT
ENERGY CONSERVATION
ENERGY SOURCE DEVELOPMENT
FEASIBILITY STUDIES
FUELS
HEATERS
IMPLEMENTATION
KILNS
LIMESTONE
MATERIALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
ROCKS
SAND
SEDIMENTARY ROCKS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
TIRES