Dorr thickener

Dorr thickener

[′dȯr ′thik·ə·nər]
(mechanical engineering)
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These were the Dorr thickener, for the continuous settling and thickening of ore slurry, and the Dorr air-lift agitator for the continuous mixing of liquids or the extraction of solubles from finely divided solids by means of an air lift.
The Dorr thickener and Dorr clarifier became the basic tools used in water and sewage treatment plants.