Method for treating rotary slag
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United States of America Patent
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Apr 25, 2000
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N/A
app pub date -
May 21, 1998
filing date -
May 21, 1998
priority date (Note) -
Expired
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Abstract
The present invention provides a method for treating rotary slag containing iron and sodium compounds. The method involves treating the slag in a sulfuric acid solution to convert the iron and sodium within the slag to iron sulfate and sodium sulfate. The iron sulfate (along with substantially all of the heavy metal contaminants) forms a precipitate, while the sodium sulfate remains in solution. The precipitate can then be separated from the solution.
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