Method for treating bottom ash
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United States of America Patent
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May 11, 2010
Grant Date -
Oct 2, 2008
app pub date -
Jan 23, 2008
filing date -
Jul 27, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least one of the following steps: the removal of organic components, the removal of heavy metals, the removal of ions and the removal of a fraction having a size of up to 50 μm. It is preferred for the nonferrous heavy metals to be removed and the ferrous metals to remain in the fraction. Most preferably at least one of the treatment steps comprises a wet treatment.
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