Method and apparatus for recycling cement kiln dust
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
Nov 27, 2000
filing date -
Jul 12, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for recycling cement kiln dust are described and involve heating a mixture containing at least one additive, water, and cement kiln dust for a sufficient time and at sufficient temperatures to form cement clinker. The additive contains an organic polyacid, a hydroxy carboxylic acid, a polycarboxylic acid, a saccharide, a carbohydrate, a salt thereof, or combinations thereof. A cement slurry containing water, cement kiln dust, and the above-described additive is also described as well as apparatus for recycling the cement kiln dust.
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