Classifying – separating – and assorting solids – Miscellaneous
Patent
1984-02-01
1985-11-12
Lutter, Frank W.
Classifying, separating, and assorting solids
Miscellaneous
209166, B01J 400
Patent
active
045526516
ABSTRACT:
A method of controlling the separation of coal from a mixture of coal and refuse in a froth flotation device by measuring the differential back pressure between two gas bubbler tubes immersed to different depths into the body of pulp in the device to produce a first control signal representative of the pulp density, and adjusting the rate of addition of a froth enhancement additive to the froth flotation device responsive to changes in said first signal; a second signal, produced by measuring back pressure of a single bubbler tube and representative of the pulp level in said device, can be corrected for changes in density by combining it with said first signal and then utilized to control liquid level in the cell by adjusting the rate of withdrawal of refuse therefrom.
REFERENCES:
patent: 2577548 (1951-12-01), Vetter
patent: 2715463 (1955-08-01), Fitch
patent: 2886051 (1959-05-01), Kroll et al.
patent: 3474902 (1969-10-01), Putman
patent: 3499580 (1970-03-01), Smith
patent: 3532102 (1970-10-01), Glassey
patent: 3551897 (1970-12-01), Cooper
patent: 3613456 (1971-10-01), Hopfe et al.
patent: 4006635 (1977-02-01), Khoi
patent: 4043193 (1977-08-01), Bailey
patent: 4136567 (1979-01-01), Rosenblum
patent: 4252139 (1981-02-01), Davis et al.
patent: 4393705 (1983-07-01), Eidschun
Carr et al., "State of the Art Assessment of Coal Preparation Plant Automation", ORNL -3699, U.S. Department of Energy (Feb. 1982), pp. 48-52.
C. H. Wells, Control Systems in Coal Preparation Plants, Report CS-1880 by Envirotech Corporation for Electric Power Research Institute (Jun. 1981), pp. 4-25 through 4-32.
Sandbrook Thomas D.
Scandrol Roy O.
Bond William
Conoco Inc.
Lutter Frank W.
Mikesell, Jr. William A.
LandOfFree
Control of froth cell performance through the use of differentia does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of froth cell performance through the use of differentia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of froth cell performance through the use of differentia will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1878540