US4439314A
Expired / Lapsed
US
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Flotation reagents
Assignee: Phillips Petroleum Co
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Filing: 1982-08-09
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Granted: 1984-03-27
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Expires: 2002-08-09
Abstract
Abstract A blend of certain xanthates with mercaptan/glycol combinations produce collector compositions which yield improved results in ore flotation.
Inventors
- 👤 Robert M. Parlman
- 👤 Clarence R. Bresson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:17
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/0043; B03D1/008; B03D2201/00; B03D2201/005; B03D2201/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A composition useful in the collection of metal-containing substances via the froth flotation of ores containing then which comprises: (a) sodium isopropylxanthate, (b) n-dodecylmercaptan, and (c) at least one dispersant containing a polyalkylene glycol conforming to the general formula HO--(R.sup.2 --O).sub.x --R.sup.3 where R 2 is a branched or straight chain alkylene radical of about 3 to about 5 carbon atoms with the proviso that at least 2 carbon atoms separate the oxygen atoms, R 3 is hydrogen, methyl, or ethyl, and x is an integer from about 6 to about 17.
Claim 2
Dependent Claim
92 words
A composition useful in the collection of metal-containing substances via the froth flotation of ores containing then which comprises: (a) sodium isopropylxanthate, (b) n-dodecylmercaptan, and (c) at least one dispersant containing a polyalkylene glycol conforming to the general formula HO--(R.sup.2 --O).sub.x --R.sup.3 where R 2 is a branched or straight chain alkylene radical of about 3 to about 5 carbon atoms with the proviso that at least 2 carbon atoms separate the oxygen atoms, R 3 is hydrogen, methyl, or ethyl, and x is an integer from about 6 to about 17.
Claim 3
Dependent Claim
50 words
The composition of claim 1 wherein the quantity of (a) is 0.001 to 0.2 pounds per ton, the quantity of (b) is 0.005 to 0.5 pounds per ton, and the weight ratio of (b) to (c) is from about 6:1 to 2:1 based on the weight of the ore present.
Claim 4
Dependent Claim
26 words
The composition of claim 2 wherein (c) contains a polyalkylene glycol of the formula HO--CHR.sup.4 CH.sub.2 --O--.sub.x R.sup.3 wherein R 4 is methyl, ethyl, or propyl.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein the polyalkylene glycol has a molecular weight ranging from about 365 to about 1000.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein the polyalkylene glycol has a molecular weight of about 450.
Claim 7
Dependent Claim
11 words
The composition of claim 2 wherein (c) contains a polypropylene glycol.
Claim 8
Dependent Claim
33 words
A process of separating ores into their constituent metal-bearing substances with froth flotation comprising the step of contacting the ore with the composition defined by any one of claims 3, 6 or 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |