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Environmental Engineering Research 2003;8(5): 236-242. DOI: https://doi.org/10.4491/eer.2003.8.5.236
CHARACTERISTICS OF HIGH TEMPERATURE VISCOSITY IN SOLID WASTE INCINERATION ASH
Bongjin Jung
Department of Environmental Eng., The University of Suwon, Suwon 445-743, Korea
Corresponding Author: Bongjin Jung ,Tel: +82-31-220-2469, Fax: +82-31-220-2533, Email: bjyung@mail.suwon.ac.kr
Received: April 19, 2003;  Accepted: September 20, 2003.
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ABSTRACT
High temperature viscosity of slag was measured to find the optimum operating temperature in a melting system for the treatment of sewage sludge ashes and municipal solid waste incineration ashes. Effect of calcium oxide as a flux for measurement of viscosity was also studied. Calcium oxide played a dual role on the slag system. It reacted as an oxide donor to break apart the silicate polymers, but at the same time the calcium ortho-silicate which was formed was a higher melting point species which, for high levels of calcium oxide, eventually raised the melting temperature of the system.
Keywords: ash melting | viscosity | slag | sewage sludge | incineration ash
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