Patent US4394257A successfully refreshed from Google Patents.
US4394257A
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Froth flotation process
Assignee: Wyeth Holdings LLC
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Filing: 1982-06-21
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Granted: 1983-07-19
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Expires: 2002-06-21
Abstract
Abstract A process for the recovery of mineral values by froth flotation in an aqueous medium employing a novel frother. Frothers prepared by Michael addition between alpha, beta-unsaturated ethylenic compounds and either alcohols, amines or mercaptans or by the condensation of HCN, aldehydes/ketones with either alcoholics, amines or mercaptans have been found to be effective in the froth flotation system and capable of reducing the required collector consumption.
Inventors
- 👤 Samuel S. Wang
- 👤 Michael J. Scanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:10
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/008; B03D1/01; B03D1/011; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
159 words
A process for collecting mineral values from a sulfide ore wherein said process comprises mixing ground ore with water to form an aqueous ore pulp, adding to said aqueous ore pulp an effective amount of a frother, aerating said aqueous ore pulp and thereafter recovering said mineral values, wherein the frother is of the general structure: ##STR19## wherein R is taken from the group consisting of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, a phenyl and an alkylaryl wherein the alkyl group consists of a saturated aliphatic radical of 1 to 6 carbon atoms, inclusive, W is taken from the group consisting of oxygen, imino and alkyl substituted imino wherein the alkyl radical consists of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, n is an integer of 1 to 4, inclusive, and X and Y are individually either hydrogen or a saturated aliphatic radical of 1 to 8 carbon atoms, inclusive.
Claim 2
Dependent Claim
159 words
A process for collecting mineral values from a sulfide ore wherein said process comprises mixing ground ore with water to form an aqueous ore pulp, adding to said aqueous ore pulp an effective amount of a frother, aerating said aqueous ore pulp and thereafter recovering said mineral values, wherein the frother is of the general structure: ##STR19## wherein R is taken from the group consisting of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, a phenyl and an alkylaryl wherein the alkyl group consists of a saturated aliphatic radical of 1 to 6 carbon atoms, inclusive, W is taken from the group consisting of oxygen, imino and alkyl substituted imino wherein the alkyl radical consists of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, n is an integer of 1 to 4, inclusive, and X and Y are individually either hydrogen or a saturated aliphatic radical of 1 to 8 carbon atoms, inclusive.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the sulfide ore is copper-molybdenum.
Claim 4
Dependent Claim
30 words
The process of claim 1 wherein an effective amount is from about 0.01 pound of frother per ton of ore to about 1.0 pound of frother per ton of ore.
Claim 5
Dependent Claim
9 words
The process of claim 1 wherein W is oxygen.
Claim 6
Dependent Claim
12 words
The process of claim 4 wherein the frother is isobutyl cyanoethyl ether.
Claim 7
Dependent Claim
9 words
The process of claim 1 wherein W is nitrogen.
Claim 8
Dependent Claim
12 words
The process of claim 6 where the frother is isobutyl cyanoethyl amine.
Claim 9
Dependent Claim
150 words
A process for collecting mineral values from an ore wherein said process comprises mixing ground ore with water to form an aqueous ore pulp, adding to said aqueous ore pulp an effective amount of a frother, aerating said aqueous ore pulp and thereafter recovering said mineral values, wherein the frother is of the general structure: ##STR20## wherein R is taken from the group consisting of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, a phenyl and an alkylaryl wherein the alkyl group consists of a saturated aliphatic radical of 1 to 6 carbon atoms, inclusive; n is an integer of 1 to 4, inclusive, X and Y are individually either hydrogen or a saturated aliphatic radical of 1 to 8 carbon atoms, inclusive; and Z is taken from the group consisting of ##STR21## wherein R" and R"' are aliphatic radicals having 1 to 8 carbon atoms, inclusive.
Claim 10
Dependent Claim
150 words
A process for collecting mineral values from an ore wherein said process comprises mixing ground ore with water to form an aqueous ore pulp, adding to said aqueous ore pulp an effective amount of a frother, aerating said aqueous ore pulp and thereafter recovering said mineral values, wherein the frother is of the general structure: ##STR20## wherein R is taken from the group consisting of a saturated aliphatic radical of 1 to 12 carbon atoms, inclusive, a phenyl and an alkylaryl wherein the alkyl group consists of a saturated aliphatic radical of 1 to 6 carbon atoms, inclusive; n is an integer of 1 to 4, inclusive, X and Y are individually either hydrogen or a saturated aliphatic radical of 1 to 8 carbon atoms, inclusive; and Z is taken from the group consisting of ##STR21## wherein R" and R"' are aliphatic radicals having 1 to 8 carbon atoms, inclusive.
Claim 11
Dependent Claim
30 words
The process of claim 8 wherein an effective amount is from about 0.01 pound of frother per ton of ore to about 1.0 pound of frother per ton of ore.
Claim 12
Dependent Claim
12 words
The process of claim 8 wherein the frother is isobutyl cyanoethyl sulfide.
Claim 13
Dependent Claim
12 words
The process of claim 8 wherein the frother is isobutyl cyanoethyl ether.
Claim 14
Dependent Claim
12 words
The process of claim 8 wherein the frother is isobutyl cyanoethyl amine.
Claim 15
Dependent Claim
12 words
The process of claim 8 wherein the ore is a sulfide ore.
Claim 16
Dependent Claim
11 words
The process of claim 13 wherein the sulfide ore is copper-molybdenum.
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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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |