Friction welded nonconsumable electrode assembly and use thereof for electrolytic production of metals and silicon
First Claim
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1. A nonconsumable electrode assembly for use in the production of an element selected from the group consisting of aluminum, lead, magnesium, zinc, zirconium, titanium and silicon by electrolytic reduction of a compound comprised of such element dissolved in a molten halide salt, the assembly comprising:
- a metal conductor for conveying electrical energy;
a ceramic electrode body having free metal or metal alloy in at least an outer surface portion thereof for making a connection between said metal conductor and said ceramic body; and
a fused metal connection between said metal conductor and said portion of said ceramic electrode body said connection formed by friction welding a portion of said metal conductor to said outer surface portion of said ceramic electrode body.
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Abstract
A nonconsumable electrode assembly suitable for use in the production of metal by electrolytic reduction of a metal compound dissolved in a molten salt, the assembly comprising a metal conductor and a ceramic electrode body connected by a friction weld between a portion of the body having a level of free metal or metal alloy sufficient to effect such a friction weld and a portion of the metal conductor.
44 Citations
16 Claims
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1. A nonconsumable electrode assembly for use in the production of an element selected from the group consisting of aluminum, lead, magnesium, zinc, zirconium, titanium and silicon by electrolytic reduction of a compound comprised of such element dissolved in a molten halide salt, the assembly comprising:
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a metal conductor for conveying electrical energy; a ceramic electrode body having free metal or metal alloy in at least an outer surface portion thereof for making a connection between said metal conductor and said ceramic body; and a fused metal connection between said metal conductor and said portion of said ceramic electrode body said connection formed by friction welding a portion of said metal conductor to said outer surface portion of said ceramic electrode body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A process for producing an element selected from the group consisting of aluminum, lead, magnesium, zinc, zirconium, titanium and silicon by electrolytic reduction of a compound comprised of such element dissolved in a molten salt, said process including providing a nonconsumable anode assembly by steps of:
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providing a metal conductor for conveying electrical energy; providing a ceramic electrode body having free metal or metal alloy in at least an outer surface portion thereof for making a connection between said metal conductor and said ceramic body; and connecting said ceramic body to said metal conductor by friction welding a portion of said metal conductor to said portion of said ceramic body having the free metal or metal alloy therein. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification