Device for automatically controlling the process of separating f

Details Device for automatically controlling the process of separating f Device for automatically controlling the process of separating f

1990-09-21

1994-11-29

Silverman, Stanley S.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209164, 209166, 209 1, B03D 100, B03D 102

Patent

active

053681665

ABSTRACT:
The automatic control device comprises a channel used to measure the level and density of pulp in a chamber of a floatation machine, in which two bubbling tubes communicate with a differential pressure transducer connected to the input of a frother flow control channel and to the input of a correction unit whose other input is connected to a pressure transducer communicating with one of the bubbling tubes. The bubbling tubes are installed in hydrostatic tubes located outside the chamber and communicating therewith at different levels relative to the pulp level. The output of the correction unit is connected to the input of a circuit designed to control the flow rate of water and frother in a pulp level stabilizing channel and having its output connected to an actuator valve of a pipeline feeding water and frother. A water and frother flow transducer is connected to the input of a circuit designed to control the gangue discharge rate in the pulp level stabilizing channel and having its output connected to the drive of an actuator valve of a branch pipe used to discharge gangue.

REFERENCES:
patent: 3551897 (1970-12-01), Cooper
patent: 3747902 (1969-10-01), Putman
patent: 4552651 (1985-11-01), Sandbrook
"Systemy automaticheskogo kontrolya i upravlenia tekhnologicheskimi protsessami flotatsionnykh ustanovok" by Kovin et al, Nedra Publishers, Moscow 1981 (pp. 69-73) (no translation).

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