Recycling of steel plant dusts to steel furnaces
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United States of America Patent
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Aug 12, 1986
Grant Date -
N/A
app pub date -
Jan 31, 1985
filing date -
Jan 31, 1985
priority date (Note) -
Expired
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Abstract
A method is provided for converting iron-containing steel plant dust to recyclable agglomerates. The method comprises mixing the dust with sufficient water and about 1 percent by weight Portland cement to permit pelletization. The pellets are dried at temperatures under 100.degree. C. to result in strong easy-to-handle agglomerates. In a preferred embodiment of the process, the dust is treated by hydrometallurgical processes to recover cadmium, lead, and zinc prior to agglomeration. The resulting pellets can then be recycled to the steel furnace or stored as a nontoxic waste.
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