Patent US4410431A successfully refreshed from Google Patents.
US4410431A
Expired / Lapsed
US
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Composition for altering the water function characteristics of mineral slurries
Assignee: ChampionX LLC
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Filing: 1982-04-01
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Granted: 1983-10-18
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Expires: 2002-04-01
Abstract
Abstract A composition for altering the water function characteristics of a wet, particulate mineral mass combines a surfactant material having an HLB number of from about 6.0 to about 12.0 with a surfactant adsorption inhibitory amount of a fatty acid substance.
Inventors
- 👤 William J. Roe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; B; B01; B01D; B01D12/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
The method of dewatering a wet, particulate mineral mass which comprises the steps of: adding a composition comprising a surfactant material having a hydrophile-lipophile balance number of from about 6.0 to about 12.0 and a surfactant adsorption inhibitory amount of a fatty acid substance to a particulate mineral/water slurry in an amount of from about 0.1 to about 1.0 pounds per dry ton of particulate mineral material; and thereafter subjecting the slurry to a mechanical dewatering procedure.
Claim 2
Independent Claim
77 words
The method of dewatering a wet, particulate mineral mass which comprises the steps of: adding a composition comprising a surfactant material having a hydrophile-lipophile balance number of from about 6.0 to about 12.0 and a surfactant adsorption inhibitory amount of a fatty acid substance to a particulate mineral/water slurry in an amount of from about 0.1 to about 1.0 pounds per dry ton of particulate mineral material; and thereafter subjecting the slurry to a mechanical dewatering procedure.
Claim 3
Dependent Claim
24 words
The method according to claim 1 wherein said fatty acid substance is a mixture of fatty acids containing from 8 to 18 carbon atoms.
Claim 4
Dependent Claim
22 words
The method according to claim 2 wherein said mixture of fatty acids is predominantly a mixture of oleic acid and linoleic acid.
Claim 5
Dependent Claim
17 words
The method according to claim 3 wherein said mixture of fatty acids is Tall Oil Fatty Acid.
Claim 6
Dependent Claim
40 words
The method according to claim 1 wherein said surfactant material is the reaction product of one mol equivalent of a primary aliphatic alcohol containing from 6 to 13 carbon atoms with from 2 to 7 mol equivalents of ethylene oxide.
Claim 7
Dependent Claim
14 words
The method according to claim 4 wherein said primary aliphatic alcohol is tridecyl alcohol.
Claim 8
Dependent Claim
30 words
The method according to claim 1 wherein said fatty acid substance is present in a ratio, with respect to said surfactant material, of from about 1:9 to 2:1 by weight.
Claim 9
Dependent Claim
20 words
The method of dewatering a wet, particulate mineral mass according to claim 1 wherein said mechanical dewatering procedure is centrifugation.
Claim 10
Dependent Claim
20 words
The method of dewatering a wet, particulate mineral mass according to claim 1 wherein said mechanical dewatering procedure is filtration.
Claim 11
Independent Claim
92 words
The method of simultaneously dewatering a coal/water slurry and reducing the freeze-adherence of the resultant product to the metal surfaces of shipping containers and the like, which method comprises the steps of: adding a composition comprising a surfactant material having a hydrophile-lipophile balance number of from about 6.0 to about 12.0 and a surfactant adsorption inhibitory amount of a fatty acid substance to a coal/water slurry in an amount of from about 0.1 to about 1.0 pounds per dry ton of coal; and thereafter subjecting the slurry to a mechanical dewatering procedure.
Claim 12
Independent Claim
92 words
The method of simultaneously dewatering a coal/water slurry and reducing the freeze-adherence of the resultant product to the metal surfaces of shipping containers and the like, which method comprises the steps of: adding a composition comprising a surfactant material having a hydrophile-lipophile balance number of from about 6.0 to about 12.0 and a surfactant adsorption inhibitory amount of a fatty acid substance to a coal/water slurry in an amount of from about 0.1 to about 1.0 pounds per dry ton of coal; and thereafter subjecting the slurry to a mechanical dewatering procedure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |