Patent CA1108317A successfully refreshed from Google Patents.
CA1108317A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Use of anionic surfactants to aid in coal/water separation
Assignee: Alchem Ltd
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Filing: 1979-03-08
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Granted: 1981-09-01
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Expires: 1999-03-08
Abstract
Abstract ABSTRACT The invention comprises a method of improving the separation of coal fines from water in froths produced by frothing coal with methylisobutyl carbonol and a hydrocarbon liquid which comprises treating said froth contain-ing the fines with a surfactant from the group consisting of fatty sulfosucci-nates, sulfated alpha olefins, and alkaryl sulfonates and then separating said fines from the water by either sedimentation or filtration or centrifugation or a combination of these unit operations.
Inventors
- 👤 Donald E. Lee
- 👤 Thomas W. Morton
- 👤 Leonard Pollard
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 20:51
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/005; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/006; B03D1/012; B03D1/02; B03D1/08; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
A method of improving the separation of coal fines from aqueous floats or froths produced by frothing coal with methyliso-butyl carbonol and a hydrocarbon liquid which comprises treating said float containing the fines with a surfactant from the group consisting of fatty sulfosuccinates, sulfated alpha olefins, and alkaryl sulfonates and then extracting said fines from the float by sedimentation, filtration or centrifugation.
Claim 2
Independent Claim
62 words
A method of improving the separation of coal fines from aqueous floats or froths produced by frothing coal with methyliso-butyl carbonol and a hydrocarbon liquid which comprises treating said float containing the fines with a surfactant from the group consisting of fatty sulfosuccinates, sulfated alpha olefins, and alkaryl sulfonates and then extracting said fines from the float by sedimentation, filtration or centrifugation.
Claim 3
Independent Claim
23 words
The method of Claim l where the surfactant is used in combination with from 5 - 80% by weight of a hydrocarbon liquid,
Claim 4
Dependent Claim
13 words
The method of Claim 1 where the fatty sulfosuccinate is a dioctyl sulfosuccinate.
Claim 5
Dependent Claim
15 words
The method of Claim 1 where the alkaryl sulphonate is a dodecyl benzene sodium sulphonate.
References Cited (Backward Citations)
No citation records indexed.
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