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.