US4190436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mix agitation for the extraction of metals from leachable ores
Assignee: Individual
•
Filing: 1977-12-20
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Granted: 1980-02-26
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Expires: 1997-12-20
Abstract
Abstract Timed or regulated air bursts are employed to agitate and oxygenate leachable ores or other material containing valuable leachable elements in the presence of a leaching solution. The process provides a homogenous mixing of fines within the leaching solution thereby reducing channeling within the ore.
Inventors
- 👤 Robert M. Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:30
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; C22B11/00; C22B11/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
In the art of cyanidization of ore for the extraction of precious or other metals or elements an improved process for extracting such metals or elements from ore or other material wherein the improvement is comprised of, agitating and oxygenating pulverized ore or material immersed within a cyanide or other leaching solution by introducing timed or regulated bursts of air into a container containing said pulverized ore or material and said cyanide or other solution in a cyclic or regulated manner over a period of time ranging from 10 to 30 hours whereby a pregnant solution containing the desired elements or metals will be formed and allowing said solution to drain from said container while providing a continuous flow of air into said solution.
Claim 2
Dependent Claim
124 words
In the art of cyanidization of ore for the extraction of precious or other metals or elements an improved process for extracting such metals or elements from ore or other material wherein the improvement is comprised of, agitating and oxygenating pulverized ore or material immersed within a cyanide or other leaching solution by introducing timed or regulated bursts of air into a container containing said pulverized ore or material and said cyanide or other solution in a cyclic or regulated manner over a period of time ranging from 10 to 30 hours whereby a pregnant solution containing the desired elements or metals will be formed and allowing said solution to drain from said container while providing a continuous flow of air into said solution.
Claim 3
Dependent Claim
27 words
The improved process of claim 1 wherein said air bursts are provided during a vat or pad extraction process and said leaching solution is a cyanide solution.
Claim 4
Dependent Claim
26 words
The improved process of claim 1 wherein said air bursts are provided during a heap leaching extraction process and said leaching solution is a cyanide solution.
Claim 5
Dependent Claim
16 words
The improved process of claim 1 wherein said ore is immersed in a NaCN leaching solution.
Claim 6
Dependent Claim
33 words
The process of claim 4 wherein an oxygen probe is utilized to monitor the amount of oxygen introduced into said solution and thereby facilitate an automatic off-on duty cycle for said air bursts.
Claim 7
Dependent Claim
16 words
The improved process of claim 1 wherein said ore is immersed in a KCN leaching solution.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein said ore is immersed in a solution that requires the introduction of oxygen to render it active as a leaching solution.
Claim 9
Dependent Claim
114 words
An improved method of extracting precious or other metals or elements from ore comprising the steps of: (a) providing a container with a cyanide or other leaching solution; (b) pulverizing ore and immersing said ore in said solution; (c) simultaneously agitating and oxygenating said ore by causing timed or regulated bursts of air to be introduced into said container whereby a churning action is created; (d) repeating said agitation and oxygenation step in a cyclic or controlled manner over an extended period of time until said solution is pregnant with said metal or elements; and (e) maintaining a steady flow of air into said container while allowing said solution to drain from said container.
Claim 10
Dependent Claim
114 words
An improved method of extracting precious or other metals or elements from ore comprising the steps of: (a) providing a container with a cyanide or other leaching solution; (b) pulverizing ore and immersing said ore in said solution; (c) simultaneously agitating and oxygenating said ore by causing timed or regulated bursts of air to be introduced into said container whereby a churning action is created; (d) repeating said agitation and oxygenation step in a cyclic or controlled manner over an extended period of time until said solution is pregnant with said metal or elements; and (e) maintaining a steady flow of air into said container while allowing said solution to drain from said container.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |