Patent US3830366A successfully refreshed from Google Patents.
US3830366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral flotation with sulfosuccinamate and depressent
Assignee: Wyeth Holdings LLC
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Filing: 1972-03-24
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Granted: 1974-08-20
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Expires: 1992-03-24
Abstract
Abstract A process for beneficiating celestite, barite, scheelite, fluorite, calcite, magnetite, gypsum, anhydrite, and apatite is disclosed comprising froth floating a ground pulp conditioned with gangue depressant using tetrasodium N-(1,2-dicarboxyethyl)N-octadecylsulfosuccinamate as collector.
Inventors
- 👤 A Day
- 👤 H Hartjens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:31
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/021
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
34 words
The process of claim 1 wherein the ores are selected from celestite, barite, scheelite, calcite and magnesite and the depressant is sodium silicate in an amount of about 3 to 5 lbs. per ton.
Claim 2
Dependent Claim
31 words
The process of claim 1 wherein the ores are selected from fluorite, gypsum, and anhydrite and the depressant is Quebracho in an amount of about 0.1 to 1.0 lb. per ton.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein the ore is apatite and the depressant is NaOH in an amount of about 0.5 lb. per ton.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein the concentrate obtained is repulped and subjected to further froth flotation with addition of suitable depressant, tetrasodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinamate, or both.
Claim 5
Dependent Claim
30 words
The process of claim 2 wherein the concentrate obtained is repulped and subjected to further froth flotation with addition of about 0.0175 lb. of tetrasodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinamate per ton of concentrate.
Claim 6
Dependent Claim
31 words
The process of claim 3 wherein the concentrate obtained is repulped and subjected to further froth flotation with addition of about 0.0175 lb. of tetrasodium N-(1,2-dicarboxyethyl)-N-octadecylsulfosuccinamate per ton of original ore.
Claim 7
Dependent Claim
10 words
The process of claim 2 wherein the ore is celestite.
Claim 8
Dependent Claim
10 words
The process of claim 2 wherein the ore is barite.
Claim 9
Dependent Claim
10 words
The process of claim 2 wherein the ore is scheelite.
Claim 10
Dependent Claim
10 words
The process of claim 2 wherein the ore is calcite.
Claim 11
Dependent Claim
10 words
The process of claim 2 wherein the ore iS magnesite.
Claim 12
Dependent Claim
10 words
The process of claim 3 wherein the ore is fluorite.
Claim 13
Dependent Claim
10 words
The process of claim 3 wherein the ore is gypsum.
Claim 14
Dependent Claim
10 words
The process of claim 3 wherein the ore is anhydrite.
Claim 15
Dependent Claim
22 words
The process of claim 1 wherein the collector is used in the range of 0.01 to 0.35 lb. per ton of ore.
Claim 16
Dependent Claim
40 words
The process of claim 1 wherein froth flotation is carried out in stages with partial usage of collector in each stage so as to provide total collector usage in the range of 0.10 to 0.50 lb. per ton of ore.
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |