Process for producing elements from a fused bath using a metal strap and ceramic electrode body nonconsumable electrode assembly

Claim 2

An assembly of a ceramic electrode body and a metal conductor rod 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 salt, the assembly comprising: a ceramic electrode body; a subassembly including a metal conductor rod having at least one metal strap affixed to an end of the rod and the strap having opposing portions extending radially outwardly from therod axis, the end of the rod and the strap portion affixed thereto spaced apart from said ceramic body a distance sufficient to avoid contact between said ceramic body and the affixed strap portion during said use of said assembly; and means for attaching end portions of the strap to said body.

Claim 3

An assembly as described in claim 1 wherein said body includes an opening therein, and said subassembly is spaced apart from an interior bottom surface within the opening of the body.

Claim 4

An assembly as described in claim 2 wherein said metal strap is U-shaped with the legs of the U projecting upwardly around the conductor rod.

Claim 5

An assembly as described in claim 1 wherein said ceramic body includes a portion for attachment to said strap, said body portion having a free metal or metal alloy therein.

Claim 6

An assembly as described in claim 4 wherein said attaching means is a metal bond connection.

Claim 7

An assembly as described in claim 4 wherein said attaching means is a weld.

Claim 8

An assembly as described in claim 4 wherein said body portion is a chemically reduced portion of said ceramic electrode body.

Claim 9

An assembly as described in claim 4 wherein said free metal or metal alloy is selected from the group consisting of Fe, Ni, Al, Mg, Ca, Co, Sn, Ti, Cr, Mn, Zr, Cu, Nb, Ta, Li, Y, Pt, Pd and Ir.

Claim 10

The assembly as described in claim 4 wherein said ceramic electrode body includes at least one metal oxide.

Claim 11

The assembly as described in claim 9 wherein said body portion is a chemically reduced portion of said ceramic electrode body.

Claim 12

The assembly as described in claim 4 wherein said ceramic electrode body includes at least one metal compound comprised of at least two metal oxides.

Claim 13

The assembly as described in claim 11 wherein said body portion is a chemically reduced portion of said ceramic electrode body.

Claim 14

An assembly of a ceramic electrode body and a metal conductor rod 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 salt, the assembly comprising: a ceramic electrode body having an opening therein and at least a portion of said body having a free metal or metal alloy therein; a subassembly comprised of a metal conductor rod having at least one U-shaped metal strap affixed to an end of the rod in a manner that the legs of the U project outwardly from the rod axis and upwardly around the rod, and the end and the strap portion affixed thereto spaced apart from an interior bottom surface of said opening a distance sufficient to avoid contact between the bottom surface and the affixed strap portion during said use of said assembly; and weld means for attaching the strap to the body.

Claim 15

An assembly of a ceramic electrode body and a metal conductor rod 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 salt, the assembly comprising: a ceramic electrode body having an opening therein and at least a portion of said body having a free metal or metal alloy therein; a subassembly comprised of a metal conductor rod having at least one U-shaped metal strap affixed to an end of the rod in a manner that the legs of the U project outwardly from the rod axis and upwardly around the rod, and the end and the strap portion affixed thereto spaced apart from an interior bottom surface of said opening a distance sufficient to avoid contact between the bottom surface and the affixed strap portion during said use of said assembly; and weld means for attaching the strap to the body.

Claim 16

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 electrode assembly by the steps of: providing a ceramic electrode body; providing a subassembly comprised of a metal conductor rod having a portion of at least one metal strap affixed to an end of the rod, the strap having opposing portions extending radially outwardly from the rod axis and the strap adapted to provide a space between said ceramic body and the strap portion affixed to the rod end, the space sufficient to avoid contact between said ceramic body and the strap portion affixed to the rod end during said process; and providing means for attaching portions of the strap to said ceramic body.

Claim 17

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 electrode assembly by the steps of: providing a ceramic electrode body; providing a subassembly comprised of a metal conductor rod having a portion of at least one metal strap affixed to an end of the rod, the strap having opposing portions extending radially outwardly from the rod axis and the strap adapted to provide a space between said ceramic body and the strap portion affixed to the rod end, the space sufficient to avoid contact between said ceramic body and the strap portion affixed to the rod end during said process; and providing means for attaching portions of the strap to said ceramic body.

Claim 18

A process as described in claim 14 whereby the step of providing said ceramic electrode body includes providing a body having an opening therein and further includes disposing at least a portion of said subassembly within said opening with the rod end having the strap affixed thereto spaced apart from an interior surface on the bottom of the opening.

Claim 19

A process as described in claim 15 whereby the step of providing said subassembly includes providing a subassembly having said metal strap in a "U" shape with the legs of the U projecting upwardly around the conductor rod.

Claim 20

A process as described in claim 14 whereby the step of providing said ceramic electrode body includes providing a body having a portion for attachment to the strap, said body portion having a free metal or metal alloy therein.

Claim 21

A process as described in claim 17 whereby said step of providing attaching means is providing a metal bond connection.

Claim 22

A process as described in claim 17 whereby said step of providing attaching means is providing a weld.

Claim 23

A process as described in claim 17 whereby the step of providing a body having a portion for attachment to the strap includes providing a chemically reduced portion of said ceramic body.

Claim 24

A process as described in claim 17 whereby the step of providing a body portion having a free metal or metal alloy therein includes providing a free metal or metal alloy selected from the group consisting of Fe, Ni, Al, Mg, Ca, Co, Sn, Ti, Cr, Mn, Zr, Cu, Nb, Ta, Li, Y, Pt, Pd and Ir.

Claim 25

A process as described in claim 17 whereby the step of providing said ceramic electrode body includes providing a ceramic electrode body having at least one metal oxide therein.

Claim 26

A process as described in claim 22 whereby the step of providing a ceramic electrode body having at least one metal oxide therein includes providing a body portion having a chemically reduced portion of said ceramic electrode body.

Claim 27

A process as described in claim 14 whereby the step of providing a ceramic body includes providing a ceramic electrode body having at least one metal compound comprised of at least two metal oxides.

Claim 28

A process as described in claim 24 whereby the step of providing a ceramic electrode body having at least one metal compound comprised of two metal oxides includes providing a ceramic electrode body having a chemically reduced portion.