Process for the detoxification of steel plant wastes
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United States of America Patent
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Oct 25, 1988
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N/A
app pub date -
Jun 25, 1987
filing date -
Jun 25, 1987
priority date (Note) -
Expired
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Abstract
A technique for rendering toxic metals (chromium, lead, cadmium and arsenic) contained in steel plant furnace dust innocuous and suitable for burial with minimal adverse environmental impact. Pelletized iron oxide containing dust is introduced into a rotary hearth furnace under a reducing atmosphere in excess of 600.degree. C. The higher iron oxides are reduced to FeO which in turn complexes with the toxic metals to form relatively benign products.
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