Coal filtration process and dewatering aids therefor

Details Coal filtration process and dewatering aids therefor Coal filtration process and dewatering aids therefor

1988-12-02

1990-01-09

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

209 5, 210736, 210778, B01D 3702

Patent

active

048926639

ABSTRACT:
Disclosed is a method for dewatering an aqueous slurry of solid coal particulates wherein a dewatering aid is added to the slurry followed by filtration thereof, preferably with vacuum augmentation. Selected quaternary ammonium dewatering aids of specific structure are disclosed.

REFERENCES:
patent: 2236930 (1941-04-01), Uytenbogaart
patent: 2862880 (1958-12-01), Clemens
patent: 3408293 (1968-10-01), Dajani
patent: 4097390 (1978-06-01), Wang et al.
patent: 4146473 (1979-03-01), Edelmann et al.
patent: 4156649 (1979-05-01), Quinn et al.
patent: 4206063 (1980-06-01), Wang et al.
patent: 4207186 (1980-06-01), Wang et al.
patent: 4323365 (1982-04-01), Crosby et al.
patent: 4370272 (1983-01-01), Wechsler et al.
Comparative Study of the Vacuum Filtration Behavior of Iron Ore Concentrate Slurries, Sastry et al., Mining Engineering, Oct. 1983.
Dewatering Encyclopedia of Chemical Technology, 1984, pp. 310-339.
The Use of Flocculants and Surfactants in the Filtration of Mineral Slurries Pearse et al., Allied Colloids, Filtration and Separation, Jan./Feb. 1983, pp. 22-27.
Keller et al., "Surface Phenomena in the Dewatering of Coal", DOE Report No. FE-9001-1 (EPA-600/7-79-008), DOE Contract No. ET-75-G-01-9001 (Jan. 1979).
Chemical Dewatering Aids for Mineral and Coal Slurries, Purdy, American Cyanimic Co. pp. 261-269.
Thickening and Filtration Techniques for Dewatering Iron-Bearing Minerals and Precipitates, Emmett, EIMCO Process Equipment Co. 1986, Iron Control Hydrometal Symposium.
Dewatering Agents in Coal Preparation, Blubaugh et al., Nalco Chemical Co.

Affiliated with

Also associated with

Rating

Coal filtration process and dewatering aids therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coal filtration process and dewatering aids therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coal filtration process and dewatering aids therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-144255