US3867977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting copper anodes using a preheated mold coating
Assignee: Kennecott Utah Copper LLC
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Filing: 1974-01-04
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Granted: 1975-02-25
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Expires: 1994-01-04
Abstract
Abstract In the coating of interior surfaces of copper molds with a slurry of a release material prior to the casting thereinto of molten impure copper for the production of anodes for use in the electrolytic refining of such impure copper, the improvement wherein the slurry is heated to a temperature of from about 150* to about 200*F. prior to its being applied, resulting in greatly increasing the operating life of the molds.
Inventors
- 👤 Ramon C Cruz
- 👤 Clyde L Light
- 👤 Donald J Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:58
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
IN THE CASTING OF COPPER ANODES WHEREIN COPPER MOLDS ARE SUCCESSFULLY FILLED WITH MOLTEN COPPER AND THE SOLIDIFIED ANODES ARE SUCCESSIVELY REMOVED THEREFROM ON A CYCLIC BASIS, AND COATINGS OF A RELEASE MATERIAL ARE APPLIED AS A SLURRY THEREOF IN A LIQUID MEDIUM TO THE INTERNAL SURFACES OF THE RESPECTIVE MOLDS PRIOR TO THE INTRODUCTION OF THE MOLTEN COPPER THEREINTO, THE IMPROVEMENT WHEREIN THE SLURRY IS HEATED AND APPLIED TO THE INTERIOR SURFACES OF SAID MOLDS AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 200*F.
Claim 2
Dependent Claim
86 words
IN THE CASTING OF COPPER ANODES WHEREIN COPPER MOLDS ARE SUCCESSFULLY FILLED WITH MOLTEN COPPER AND THE SOLIDIFIED ANODES ARE SUCCESSIVELY REMOVED THEREFROM ON A CYCLIC BASIS, AND COATINGS OF A RELEASE MATERIAL ARE APPLIED AS A SLURRY THEREOF IN A LIQUID MEDIUM TO THE INTERNAL SURFACES OF THE RESPECTIVE MOLDS PRIOR TO THE INTRODUCTION OF THE MOLTEN COPPER THEREINTO, THE IMPROVEMENT WHEREIN THE SLURRY IS HEATED AND APPLIED TO THE INTERIOR SURFACES OF SAID MOLDS AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 200*F.
Claim 3
Dependent Claim
13 words
A method in accordance with claim 1, wherein the liquid medium is water.
Claim 4
Dependent Claim
37 words
A method in accordance with claim 2, wherein the release agent is silica, and the temperature of the mold during the application of the release agent thereto is within the range of about 200* to about 1,000*F.
Claim 5
Dependent Claim
29 words
A method in accordance with claim 1, wherein the release agent is a member selected from the group consisting of silica, bone ash, alumina, clay, ganister, lime, and graphite.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |