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Aluminum Recycling, 2nd Edition
book

Aluminum Recycling, 2nd Edition

by Mark E. Schlesinger
December 2013
Intermediate to advanced content levelIntermediate to advanced
282 pages
9h 56m
English
CRC Press
Content preview from Aluminum Recycling, 2nd Edition
133Melting Furnace Fundamentals
The combination of these requirements eliminates most of the available refrac-
tory compositions. Of the remaining choices, those which have by far become
the most popular for melting and holding furnaces are refractories based on the
alumina–silica system. Figure 7.8 illustrates the system, which features the ter-
nary compound mullite (Al
6
Si
2
O
13
) in addition to pure corundum (Al
2
O
3
) and silica
(SiO
2
). The refractories used in contact with molten metal and dross in aluminum
melting and holding furnaces have a high alumina content (60%–85% Al
2
O
3
) and
typically consist mostly of a mixture of corundum and mullite
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Publisher Resources

ISBN: 9781466570245