Thickener control process

Details Thickener control process Thickener control process

1979-09-25

1981-06-16

Castel, Benoit

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210740, C02F 152

Patent

active

042736587

ABSTRACT:
The operation of a continuous thickener, clarifier, or similar device having a feed well into which a feed slurry of suspended solids and a flocculant are continually introduced to effect separation of the slurry into a clarified solution which is withdrawn through an overflow launder and a thickened sludge which is transported into a discharge port at the bottom of the unit is controlled by establishing the slime level at a point near the bottom of the feed well, continuously monitoring the density of the downflowing slurry within the well, and regulating the rate of flocculant addition in response to small changes in the slurry density.

REFERENCES:
patent: 2338667 (1944-01-01), Riche
patent: 3128786 (1964-04-01), Badgett
patent: 3281594 (1966-10-01), Garrison
patent: 3287263 (1966-11-01), Johnson et al.
patent: 3834529 (1974-09-01), Hart
patent: 4040954 (1977-08-01), Chandler
patent: 4159248 (1979-06-01), Taylor et al.
patent: 4160734 (1979-07-01), Taylor et al.
White, L., "Wyoming Uranium Miners Set Sights on Higher Production"; Eng. of Mining Journal; Dec. 1975, pp. 61-71.

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