Patent US3703132A successfully refreshed from Google Patents.
Patent US3909399A successfully refreshed from Google Patents.
US3909399A
Expired / Lapsed
US
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Froth flotation method for recovery of minerals
Assignee: Individual
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Filing: 1973-11-06
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Granted: 1975-09-30
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Expires: 1993-11-06
Abstract
Abstract An improved method in concentration of oxide ores by froth flotation process which comprises subjecting an oxide ore of a metal which can change the valency state from lower to higher by the action of inorganic oxidizing compounds in the presence of an effective quantity of a flotation collector-frother, an olefinic, diolefinic, or triolefinic adduct of alkyl polyhydroxycarboxylic acids; the indicated compounds provide selectivity and/or recovery of oxide minerals of iron, chromium, cerium, yttrium, antimony, and phosphorous over silica and silicate gangue.
Inventors
- 👤 Vojislav Petrovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:25
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/001; B03D1/002; B03D1/004; B03D1/008; B03D1/021; B03D2201/00; B03D2201/02; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
AN IMPROVED OF (OXIDIC) OF BENEFICATING ORES AND MINERALS SELECTED FROM THE GROUP OF OXIDES ORES AND MINERALS OR IRON, CHROMIUM, CERIUM, YTTRIUM, ANTIMONY, AND PHOSPHOROUS BY FROTH FLOTATION PROCESS TO PRODUCE A FROTH CONCENTRATE OF DESIRED METAL VALUE WHICH IMPROVEMENTS COMPRISES, EFFECTING THE FROTH FLOTATION OF ORE BY TREATING THE COMMINUTEDD THE MINERAL SLURRY OF AFORESAID ORES AND MINERALS WITH INORGANIC OXIDIZING AGENTS, FOLLOWED BY AN EFFECTIVE AMOUNT OF A COLLECTOR-FROTHER OF AN OLEFIN (ALKYL VINYL) OR POLYOLEFIN (ALKYL POLYVINYL) CARBINAL ADDUCT OF ALKYL POLYHYDROCARBOXYLIC ACIDS, SAID OLEFINE OR POLYOLEFINE CARBINOLS HAVE FORM 8 TO 14 CARBON ATOMS, SAID ADDUCT HAVE FROM 10 TO 24 CARBON ATOMS, SAID A POLYHYDROXYCARBOXYLIC ACID (HAVING AT LEAST 6) HAVE FROM TWO TO SIX HYDROXYL GROUPS PER MOLECULE, AND RECOVERING A FROTH CONCENTRATE RELATIVELY RICH IN THE DESIRED METAL VAUES TO LEAVE TAILINGS RELATIVELY POOR IN THE DESIRED. METAL VALUES.
Claim 2
Dependent Claim
147 words
AN IMPROVED OF (OXIDIC) OF BENEFICATING ORES AND MINERALS SELECTED FROM THE GROUP OF OXIDES ORES AND MINERALS OR IRON, CHROMIUM, CERIUM, YTTRIUM, ANTIMONY, AND PHOSPHOROUS BY FROTH FLOTATION PROCESS TO PRODUCE A FROTH CONCENTRATE OF DESIRED METAL VALUE WHICH IMPROVEMENTS COMPRISES, EFFECTING THE FROTH FLOTATION OF ORE BY TREATING THE COMMINUTEDD THE MINERAL SLURRY OF AFORESAID ORES AND MINERALS WITH INORGANIC OXIDIZING AGENTS, FOLLOWED BY AN EFFECTIVE AMOUNT OF A COLLECTOR-FROTHER OF AN OLEFIN (ALKYL VINYL) OR POLYOLEFIN (ALKYL POLYVINYL) CARBINAL ADDUCT OF ALKYL POLYHYDROCARBOXYLIC ACIDS, SAID OLEFINE OR POLYOLEFINE CARBINOLS HAVE FORM 8 TO 14 CARBON ATOMS, SAID ADDUCT HAVE FROM 10 TO 24 CARBON ATOMS, SAID A POLYHYDROXYCARBOXYLIC ACID (HAVING AT LEAST 6) HAVE FROM TWO TO SIX HYDROXYL GROUPS PER MOLECULE, AND RECOVERING A FROTH CONCENTRATE RELATIVELY RICH IN THE DESIRED METAL VAUES TO LEAVE TAILINGS RELATIVELY POOR IN THE DESIRED. METAL VALUES.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein the (activator-promoter is) inorganic oxidizing agents are selected from the group (of) consisting of chlorate, chromate, dichromate, permanganate, ferrate.
Claim 4
Dependent Claim
53 words
A method according to claim 1, wherein said oxidizing agents are added (by reducing potassium permanganate in an acid slurry made of hydrochloric acid and) in the presence of sodium or calcium fluoride in a pulp of mineral slurry acidified with hydrochloric acid or sulfuric acid in conjunction with (the) aforesaid oxidizing agents.
Claim 5
Dependent Claim
87 words
A method according to claim 1, wherein the collector-frother is monoolefine (amylene, octylene, dodecylene, tetradecylene) carbinol adduct of (glycEric acid, glycerolglyceric acid, gluconic acid, saccharic acid, or mixture thereof) (hexane-, decane-, or tetradecaneglyceric acid, hexane-, or decanegluconic acid, hexane-, or decanesaccharic acid or mixture thereof) alkyl polyhydroxycarboxylic acids, said monoolefine have from 8 to 14 carbon atoms, said acids have from 2 to 6 hydroxyl groups, said adducts (consisting) have from 10 to 20 carbon atoms for the entire (vinyl) monoolefine carbinol adducts of alkyl polyhydroxycarboxylic acids.
Claim 6
Dependent Claim
92 words
A method according to claim 1, wherein the collector-frother is diolefine (allyl carbinol, propylallyl carbinol, amylallyl carbinol, octylallyl carbinol, or tetramethylallyl carbinol) carbinol adduct of (glyceric acid, glycerolglyceric acid, gluconic acid, saccharic acid or mixture thereof) (hexane-, decane-, or tetradecaneglyceric acid, hexane--, or decanegluconic acid, hexane-, or decanesaccharic acid, or mixture thereof) alkyl polyhydroxycarboxylic acid, said diolefine have 10 to 14 carbon atoms, said acids have 2 to 6 hydroxyl groups, said adducts (consisting) have from 13 to 22 carbon atoms for the entire (allyl) diolefine carbinol adduct of alkyl polyhydroxycarboxylic acids.
Claim 7
Dependent Claim
89 words
A method according to claim 1, wherein the collector-frother is triolefine (trivinyl carbinol such as heptyltrivinyl carbinol, nonyltrivinyl carbinol, undecyltrivinyl carbinol) carbinol adduct of (glyceric acid, glycerolglyceric acid, gluconic cid, saccharic acid, or mixture thereof) (hexane-, or decaneglyceric acid, hexane-, or decane-glycerolglyceric acid, or hexane-, or decanesaccharic acid, or mixture thereof) alkyl polyhydroxycarboxylic acids, said triolefine carbinols have 12 to 14 carbon atoms, said alkyl polyhydroxycarboxylic acids have 2 to 6 hydroxyl groups, said adducts have from 16 to 24 carbon atoms for the entire (trivinyl) triolefine carbinol adducts.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |