Electrolytic cathode containing titanium boride-carbon coating, and preparation method thereof

An electrolytic cathode and carbon coating technology, which is applied in the field of electrolytic cathode, can solve the problems of affecting the normal life of the electrolytic cell, increasing the secondary reaction loss of aluminum, and non-wetting of molten metal aluminum, so as to reduce the average working voltage and secondary Response probability, increase service life, reduce disturbance effect

Active Publication Date: 2012-01-04
YUNNAN RUNXIN ALUMINUM
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  • Claims
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Problems solved by technology

[0002] The cryolite-alumina molten salt electrolysis method is the only smelting method in the aluminum industry today. The current carbon cathode does not wet the molten metal aluminum. Aluminum liquid, because the metal aluminum liquid is a conductive fluid in the tank, under the action of a strong magnetic field, electromagnetic force is induced in the conductive fluid, causing the aluminum liquid to flow, fluctuate and bulge, which not only makes it necessary to maintain a high level be

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  • Electrolytic cathode containing titanium boride-carbon coating, and preparation method thereof
  • Electrolytic cathode containing titanium boride-carbon coating, and preparation method thereof

Examples

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Example Embodiment

[0018] Example 1

[0019] The specific preparation steps of the titanium boride-carbon coating are as follows:

[0020] A. Prepare materials according to the following ingredients: 2 kg of titanium boride, 2 kg of epoxy resin, 2.4 kg of diethylene triamine, 0.5 kg of carbon fiber, 3.1 kg of graphite powder, to obtain a total weight of 10 kg of raw materials, graphite, titanium boride, carbon fiber Put it into the container and stir evenly to obtain solid material; put diethylenetriamine into the liquid container, add epoxy resin, and stir evenly to obtain liquid material; slowly pour the solid material into the liquid material and stir while adding until it is solid The materials are completely and evenly mixed and dissolved in the liquid materials, thus forming the titanium boride-carbon coating;

[0021] B. Coat the titanium boride-carbon paint prepared in step A evenly on the entire cathode surface with a thickness of 3mm, dipping a little diethylenetriamine to smooth the sur...

Example Embodiment

[0023] Example 2

[0024] The specific preparation steps of the titanium boride-carbon coating are as follows:

[0025] A. Prepare materials according to the following components: 2.2 kg of titanium boride, 1.5 kg of epoxy resin, 2.4 kg of diethylene triamine, 0.8 kg of carbon fiber, 3.1 kg of graphite powder, to obtain a total weight of 10 kg of raw materials; combine graphite, titanium boride, Put the carbon fiber into the container and stir evenly to obtain the solid material; put the diethylene triamine into the liquid container, add the epoxy resin, and stir evenly to obtain the liquid material; slowly pour the solid material into the liquid material and stir while adding it until The solid materials are completely and evenly mixed and dissolved in the liquid materials to form the titanium boride coating;

[0026] B. Coat the titanium boride-carbon paint prepared in step A uniformly on the entire cathode surface with a thickness of 8mm, dipping a little diethylenetriamine t...

Example Embodiment

[0028] Example 3

[0029] The specific preparation steps of the titanium boride-carbon coating are as follows:

[0030] A. Prepare materials according to the following ingredients: 2.1 kg of titanium boride, 1.7 kg of epoxy resin, 2.5 kg of diethylene triamine, 0.3 kg of carbon fiber, and 3.4 kg of graphite powder to obtain a total weight of 10 kg of raw materials; combine graphite, titanium boride, Put the carbon fiber into the container and stir evenly to obtain the solid material; put the diethylene triamine into the liquid container, add the epoxy resin, and stir evenly to obtain the liquid material; slowly pour the solid material into the liquid material and stir while adding it until The solid materials are completely and evenly mixed and dissolved in the liquid materials to form the titanium boride coating;

[0031] B. Coat the titanium boride-carbon paint prepared in step A evenly on the entire cathode surface with a thickness of 5mm, dipping a little diethylene triamine...

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Abstract

The invention discloses an electrolytic cathode containing a titanium boride-carbon coating, and a preparation method thereof. The electrolytic cathode is characterized in that: a coating is coated on the surface of the electrolytic cathode, wherein the coating comprises components of, by mass: 20 to 22% of TiB2, 15 to 20% of epoxy resin, 24 to 27% of diethylene triamine, 0.3 to 0.8% of carbon fiber, and balance of graphite powder. The preparation method of the aluminum electrolytic cathode comprises steps that: the materials are sufficiently mixed and uniformly coated on the surface of the electrolytic cathode; the coating is heated from normal temperature to 150 DEG C, such that the coating is cured, and the electrolytic cathode containing the titanium boride-carbon coating is obtained.According to the invention, good wettability of aluminum liquid and the electrolytic cathode is utilized, such that aluminum oxide deposition is not easy to be left on the surface of the electrolyticcathode. Therefore, deposition or crusting is not easy to occur, current is uniformly distributed, disturbance of magnetic fields to the aluminum liquid is reduced, current efficiency is improved, energy consumption is reduced, the service life of an electrolyte tank is prolonged, and aluminum liquid level and polar pitch can be appropriately reduced. With the electrolytic cathode provided by theinvention, an average working voltage and a secondary reaction probability of the aluminum electrolyte tank are reduced, aluminum electrolytic production is improved, and the quality of aluminum products is improved.

Description

technical field [0001] The invention relates to an electrolysis cathode, in particular to an electrolysis cathode with a titanium boride-carbon coating, and belongs to the technical field of electrolysis. Background technique [0002] The cryolite-alumina molten salt electrolysis method is the only smelting method in the aluminum industry today. The current carbon cathode does not wet the molten metal aluminum. Aluminum liquid, because the metal aluminum liquid is a conductive fluid in the tank, under the action of a strong magnetic field, electromagnetic force is induced in the conductive fluid, causing the aluminum liquid to flow, fluctuate and bulge, which not only makes it necessary to maintain a high level between the cathode and the anode The pole distance increases the secondary reaction loss of aluminum, reduces the current efficiency, and increases the unit consumption of DC power. In addition, the surface of the carbon cathode is easy to form sedimentation at ...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 谢刚苏其军杨万章俞小花于站良邢大庆杨金星杨军龙周旭
Owner YUNNAN RUNXIN ALUMINUM
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