The role of thermal analysis in detecting impurity levels during aluminum recycling

Recycling of aluminum scrap has gained interest owing to its economic and ecological benefits. Unfortunately, during the collection of scrap from a mixer of junk from various sectors it is difficult to ensure that the recycled alloy has the same chemical composition as that of already existing comme...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2010-06, Vol.100 (3), p.847-851
Main Authors: Mahfoud, Musbah, Prasada Rao, A. K., Emadi, Daryoush
Format: Article
Language:English
Subjects:
Alloying elements
Aluminum
Aluminum alloys
Aluminum base alloys
Analysis
Analytical Chemistry
Applied sciences
Chemistry
Chemistry and Materials Science
Exact sciences and technology
Impurities
Inorganic Chemistry
Measurement Science and Instrumentation
Melts
Metals. Metallurgy
Physical Chemistry
Polymer Sciences
Production of metals
Recycled
Recycling
Scrap
Scrap metals
Scrap. Recycling. Recovery metals
Thermal analysis
Waste management
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Summary:Recycling of aluminum scrap has gained interest owing to its economic and ecological benefits. Unfortunately, during the collection of scrap from a mixer of junk from various sectors it is difficult to ensure that the recycled alloy has the same chemical composition as that of already existing commercial alloys. Consequently, some of the alloying elements become trace/tramp elements in the recycled alloy. Therefore, in order to obtain high performance recycled alloys, controlling the impurity levels of the aluminum melt is of vital importance. Normally, computer aided cooling curve analysis (CA-CCA) is used to find the relationship between cooling curve parameters, melt treatments, alloy composition, and properties. In the present study, the first differential thermal analysis (DTA) approach has been used to detect and quantify impurity elements in scrap-like liquid aluminum alloys.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-010-0742-8