Method for producing an electrolytic cell cathode
AssigneeMosal Aluminum, Elkem a/s & Co.
InventorJan Hvistendahl
Life of this patent
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Abstract
The present application relates to an outer shell for electrolytic cell for molten salt electrolysis preferably an electrolytic cell for production of aluminium, wherein the outer shell is made from concrete. The present application further relates to a method for producing a cathode for molten salt electrolysis where the cathode is built up on a form having outer dimensions and shape corresponding to the inner dimensions and shape of the finished cathode, by successively placing on said form bottom carbon blocks, eventual intermediate carbon blocks, sidewall carbon blocks, busbars, and eventual barrier layer and refractory insulation material layers, whereafter an outer shell made from concrete is cast upon the layers of refractory insulation material.
Claims21
A method for producing an electrolytic cell cathode wherein said cell cathode has an inner cell area formed by a bottom area and a side area, said method comprising the steps of:
- (a) first, forming a layer of carbon material onto a form, said form having outer dimenisons and shape comparable to said inner cell area said layer of carbon material having a bus bar;
- (b) second, placing over at least a portion of said layer of carbon material a refractory insulating material to form a shell;
- and
- (c) third, casting concrete over said shell thereby forming said electrolytic cell cathode.
A method for producing an electrolytic cell cathode, wherein said electrolytic cell cathode has an inner cell area formed by a bottom area and a side area, said method comprising the steps of:
- (a) first, forming a monolithic carbon layer onto a form, said form having outer dimensions and shape comparable to said inner cell area, said carbon layer having a bus bar;
- (b) second, placing over at least part of said monolithic carbon layer refractory insulating material to form a shell;
- and
- (c) third, casting over said shell a concrete material thereby forming said electrolytic cell cathode.
A method of producing an electrolytic cell cathode wherein said cell has an inner cell area formed from a bottom area and a side area, said method comprising the steps of:
- (a) first, forming a monolithic carbon layer from carbon blocks, said carbon layer having an inside and an outside, said inside having an area comparable to said inner cell area, said monolithic carbon layer having a bus bar;
- (b) second, placing over said outside of said monolithic carbon layer at least a partial layer of refractory material to form a shell;
- and
- (c) third, casting concrete over said shell thereby forming said electrolytic cell cathode.
An electrolytic cell cathode wherein said cell cathode has an inner cell area formed by a bottom area and a side area, said cell cathode being characterized by being made by a method comprising the following steps:
- (a) first, forming a monolithic carbon layer from carbon blocks onto a form, said form having outer dimensions and shape comparable to said inner cell area, said carbon layer having a bus bar;
- (b) second, placing over at least part of said monolithic carbon layer refractory insulating material to form a shell;
- and
- (c) third, casting over said shell a concrete material thereby forming said electrolytic cell cathode.
Dependencies are inferred from the claim text.