Upgrading of zircon
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United States of America Patent
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Jun 29, 2010
Grant Date -
Dec 20, 2007
app pub date -
May 24, 2005
filing date -
May 27, 2004
priority date (Note) -
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Abstract
A process for upgrading an inferior grade of zircon to a superior grade thereof includes mixing the inferior grade of zircon, in comminuted form, with at least one mineralizer, to obtain a zircon/mineralizer mixture, which is a calcined product. The calcined product is washed, and thereafter, in a comminution step, the washed calcined product is comminuted to obtain a superior grade of zircon, which is suitable for use as a glaze opacifier.
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