Double-layer aluminum cathode aluminum electrolytic cell cathode

An aluminum electrolytic cell and electrolytic cell technology, applied in the field of double-layer aluminum cathode aluminum electrolytic cell cathode, can solve problems such as insufficient energy utilization efficiency, rising carbon-steel contact pressure drop, increased power consumption of aluminum electrolysis, etc., to achieve the elimination of honeycomb The effect of eliminating the defects of micro-batteries and eliminating the precipitation of alumina

CN105780057BInactive Publication Date: 2018-04-20XINJIANG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a double-layer aluminum cathode aluminum electrolysis cell cathode, and relates to the improvement on aluminum electrolysis cell production with aluminum as the cathode, with cryolite aluminum monoxide melt as an electrolyte and through a molten salt method. The double-layer aluminum cathode aluminum electrolysis cell cathode is characterized in that the structure of the cathode comprises an electrolysis cell body, two cathode partition walls, a cathode busbar and a cathode horizontal partition plate, wherein the two cathode partition walls are arranged in cell ledges at the two ends of the aluminum electrolysis cell body and fixedly connected with the inner walls of side cell ledges of the electrolysis cell body, the cathode busbar enters the electrolysis cell body from side channels formed by the cathode partition walls and the inner walls of the cell ledges at the ends of the aluminum electrolysis cell body, and the cathode horizontal partition plate is located in the electrolysis cell body and provided with molten aluminum through holes. According to the double-layer aluminum cathode aluminum electrolysis cell cathode, molten aluminum in which no cathode carbon block, no steel bar and no titanium boride coating exist is adopted as the cathode to replace a cathode composed of steel bars and a carbon block set. The defects that according to a traditional aluminum electrolysis cell, aluminum oxide deposit exists on cathode carbon blocks and cellular micro-batteries exist are eliminated. In the electrolysis production process, the problem that aluminum oxide and aluminum carbide which are deposited and generated at the furnace bottom pollute electrolysis molten aluminum does not exist.
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Description

Technical field

[0001] A double-layer aluminum cathode aluminum electrolytic cell cathode relates to an improvement in the production of aluminum electrolytic cell cathode using aluminum as a cathode, cryolite-alumina melt as an electrolyte, and a molten salt method. Background technique

[0002] Aluminum is the non-ferrous metal with the largest output and consumption, and the second largest metal structure material after steel. It has an extremely important strategic position in the national economy and national defense construction. At present, my country's electrolytic aluminum output ranks first in the world. Electrolytic aluminum production uses cryolite-alumina melt as the electrolyte, carbon as the anode, and a cathode system composed of liquid aluminum, cathode carbon blocks, and cathode steel rods as the cathode. Direct current is applied to precipitate CO at the anode. 2 The gas precipitates liquid aluminum at the cathode. The basic reaction of aluminum electrolysis i...

Examples

Embodiment Construction

[0024] A double-layer aluminum cathode aluminum electrolytic cell cathode, its structure includes: an electrolytic cell body 7, which is a concave cell body made of refractory-heat insulating material; a tank top 7b is provided on the upper edge of the electrolytic cell body;

[0025] Cathode partition wall 8, the partition walls are two partition walls respectively arranged in the two ends of the electrolytic cell body and fixedly connected with the inner wall of the electrolytic cell body side tank bank, and the bottom of the partition wall is connected to the electrolytic cell body There is a bottom channel between the bottom and the bottom; the cathode partition wall and the side channel of the inner wall of the end of the electro-aluminum solution tank body;

[0026] Cathode bus bar 9, the cathode bus bar enters the electrolytic cell through the side channel of the cathode partition wall and the inner wall of the end of the electrolytic aluminum cell body, see image 3 .

[0027...