Dorr agitator

Dorr agitator

[′dȯr ′aj·ə‚tād·ər]
(mechanical engineering)
A tank used for batch washing of precipitates which cannot be leached satisfactorily in a tank; equipped with a slowly rotating rake at the bottom, which moves settled solids to the center, and an air lift that lifts slurry to the launders. Also known as Dorr thickener.
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patents awarded Dorr, the most important include, the Dorr classifier, the Dorr thickener, a tray thickener, a thickener-hydrometer, and the renowned Dorr agitator.