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CA1103205A Expired / Lapsed CA ⏱️ 0.0 years remaining

Insoluble anode for the electrowinning of copper

Assignee: Individual
•
Filing: 1980-03-17
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Granted: 1981-06-16
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Expires: 2000-03-17
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Abstract

Abstract ABSTRACT An insoluble anode for use in the electro-winning of copper, the anode being formed by casting molten lead alloy preferably including approximately 0.01-01% by weight calcium as an alloying agent in a suitable mold necessary flow of the molten alloy being minimized within the mold, the temperature of the molten alloy and the temperature of the mold being selected to minimize the time necessary for solidification of the molten alloy within the mold, the lead alloy anode preferably being removed from the mold substantially as soon as it is mechanically self-supporting and rapidly cooling the anode in an unstressed configuration to freeze its grain structure and develop dimensional stability. The anode has a substantially flat configuration with an effective surface even on either side of at least approximately 5 square feet and is characterized by the uniform precipitate distribution illustrated in Fig. 7 and the surface finish illustrated in Fig. 9.

Inventors

  • 👤 Bill J. Knight

Bibliographic Details

Application Number —
Jurisdiction CA
Data Source google_patents
Last Synchronized 2026-10-23 20:02
CPC Classifications
—

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 89 words
An insoluble anode for use in the electro-winning of copper, the anode having a substantially flat configuration with an effective surface area on either side thereof of at least approximately 5 square feet, the anode being formed by a casting process from a lead alloy including approximately 0.01-0.1% by weight calcium, the anode being further characterized by substantially minimum porosity, a uniform precipitate distribution of PbCa3 in a lead matrix, the surface of the anode being continuous and smooth and further characterized by having a galvanized or rolled appearance.
Claim 2
Dependent Claim 89 words
An insoluble anode for use in the electro-winning of copper, the anode having a substantially flat configuration with an effective surface area on either side thereof of at least approximately 5 square feet, the anode being formed by a casting process from a lead alloy including approximately 0.01-0.1% by weight calcium, the anode being further characterized by substantially minimum porosity, a uniform precipitate distribution of PbCa3 in a lead matrix, the surface of the anode being continuous and smooth and further characterized by having a galvanized or rolled appearance.
Claim 3
Dependent Claim 115 words
An insoluble anode for use in the electro-winning of copper, the anode having a substantially flat configuration with an effective area on either side thereof of at least approximately 5 square feet, the anode being formed in a casting process by introduction of a molten lead alloy into a suitable mold, the finished anode having a composition including approximately 0.02-0.07% by weight calcium, the balance essentially pure lead except for normal impurities, the resultant anode being characterized by substantially minimum porosity and having a typical uniform precipitate distribution of PbCa3 in a lead matrix as illustrated in Fig. 7, the surface of the anode having a galvanized or rolled appearance as illustrated in Fig. 9.
Claim 4
Dependent Claim 115 words
An insoluble anode for use in the electro-winning of copper, the anode having a substantially flat configuration with an effective area on either side thereof of at least approximately 5 square feet, the anode being formed in a casting process by introduction of a molten lead alloy into a suitable mold, the finished anode having a composition including approximately 0.02-0.07% by weight calcium, the balance essentially pure lead except for normal impurities, the resultant anode being characterized by substantially minimum porosity and having a typical uniform precipitate distribution of PbCa3 in a lead matrix as illustrated in Fig. 7, the surface of the anode having a galvanized or rolled appearance as illustrated in Fig. 9.

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