Double-layer aluminum cathode aluminum electrolytic cell

Abstract

The invention discloses a double-layer aluminum cathode aluminum electrolysis cell, and relates to the improvement on aluminum electrolysis cell production with aluminum as a cathode, with cryolite aluminum monoxide melt as an electrolyte and through a molten salt method. The double-layer aluminum cathode aluminum electrolysis cell structurally comprises a prebaked anode, a discharging device and a dust purifying device. The double-layer aluminum cathode aluminum electrolysis cell is characterized in that the structure of a cathode system of the double-layer aluminum cathode aluminum electrolysis cell 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 the 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, 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.

Description

technical field

[0001] The double-layer aluminum cathode aluminum electrolytic cell relates to an improvement of an aluminum electrolytic cell produced by 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 structural material after steel. It has an extremely important strategic position in national economy and national defense construction. At present, my country's electrolytic aluminum production ranks first in the world. The production of electrolytic aluminum uses cryolite-alumina melt as the electrolyte, carbon as the anode, and a cathode system composed of liquid aluminum, cathode carbon block, and cathode steel rod as the cathode. When a direct current is passed, CO is precipitated at the anode. 2 gas, and liquid aluminum is precipitated at the cathode. The basic reaction of aluminum electro...

Examples

Embodiment Construction

[0025] Double-layer aluminum cathode aluminum electrolytic cell 3, its structure includes: prebaked anode 4, feeding device 5, dust purification device 6; the structure of its cathode system 7 includes:

[0026] An electrolytic cell body 7a, which is a concave cell body made of refractory-insulation material; a tank side 7b is provided on the upper edge of the electrolytic cell body;

[0027] Cathode partition wall 8, the partition wall 8 is two partition walls that are respectively arranged in the sides of the two ends of the electrolytic cell body and are fixedly connected with the inner walls of the sides of the electrolytic cell body. There is a bottom channel between the lower bottom of the body; the cathode partition wall and the inner wall of the side channel at the end of the electrolytic aluminum tank body;

[0028] Cathode busbar 9, the cathode busbar enters the electrolytic cell body from the cathode partition wall and the inner wall-shaped side channel at the end o...

technical field

[0001] The double-layer aluminum cathode aluminum electrolytic cell relates to an improvement of an aluminum electrolytic cell produced by 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 structural material after steel. It has an extremely important strategic position in national economy and national defense construction. At present, my country's electrolytic aluminum production ranks first in the world. The production of electrolytic aluminum uses cryolite-alumina melt as the electrolyte, carbon as the anode, and a cathode system composed of liquid aluminum, cathode carbon block, and cathode steel rod as the cathode. When a direct current is passed, CO is precipitated at the anode. 2 gas, and liquid aluminum is precipitated at the cathode. The basic reaction of aluminum electro...

Examples

Embodiment Construction

[0025] Double-layer aluminum cathode aluminum electrolytic cell 3, its structure includes: prebaked anode 4, feeding device 5, dust purification device 6; the structure of its cathode system 7 includes:

[0026] An electrolytic cell body 7a, which is a concave cell body made of refractory-insulation material; a tank side 7b is provided on the upper edge of the electrolytic cell body;

[0027] Cathode partition wall 8, the partition wall 8 is two partition walls that are respectively arranged in the sides of the two ends of the electrolytic cell body and are fixedly connected with the inner walls of the sides of the electrolytic cell body. There is a bottom channel between the lower bottom of the body; the cathode partition wall and the inner wall of the side channel at the end of the electrolytic aluminum tank body;

[0028] Cathode busbar 9, the cathode busbar enters the electrolytic cell body from the cathode partition wall and the inner wall-shaped side channel at the end o...

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