Process for treating precious metal ores
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United States of America Patent
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Aug 7, 2001
Grant Date -
N/A
app pub date -
Jul 28, 2000
filing date -
Dec 30, 1999
priority date (Note) -
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Abstract
This invention provides a method to control the off gas emission of sulfur dioxide from a mineral ore roaster by grinding a sulfur-containing mineral ore, adding sodium sesquicarbonate to the mineral ore, and roasting the ore and sodium sesquicarbonate at an elevated temperature.
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