| 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. |