Cathode paste material

A technology of cathode paste and iron powder, which is applied in the field of electrolytic cell structure, can solve the problems of reducing energy efficiency and increasing cell voltage, and achieves the effects of reducing cell voltage, reducing cathode voltage drop, and saving electrolysis energy consumption

Inactive Publication Date: 2013-06-26
HUNAN CHUANGYUAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phosphorus pig iron casting method can closely connect the cathode carbon block and the steel rod, and has good electrical contact performance. It is easy to produce corner cracks and dovetail groove top corner cracks. The above shortcomings make it difficult to popularize phosphorus pig iron casting.
[0005] At present, the assembly process adopted by most aluminum electrolysis enterprises is the carbon paste tamping method, and the main components of the carbon paste used are electric calcined coal and graphi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A cathode paste, characterized in that the composition and weight percentage of the cathode paste are: 1% iron powder, 5% pitch, 20% anthracene oil, 35% graphite, 39% electrocalcined anthracite or metallurgical coke, The iron powder is reduced iron powder, or atomized iron powder, or a mixture of the two, and the graphite is flake graphite, or graphite powder, or a mixture of the two.

Embodiment 2

[0020] A cathode paste, characterized in that the composition and weight percentage of the cathode paste are: 10% iron powder, 10% anthracene oil, 15% anthracene oil, 20% graphite, 45% electrocalcined anthracite or metallurgical coke , the iron powder is reduced iron powder, or atomized iron powder, or a mixture of the two, and the graphite is flake graphite, or graphite powder, or a mixture of the two.

Embodiment 3

[0022] A cathode paste, characterized in that the components and weight percentages of the cathode paste are: 20% iron powder, 1% pitch, 18% anthracene oil, 19% graphite, 42% electrocalcined anthracite or metallurgical coke, The iron powder is reduced iron powder, or atomized iron powder, or a mixture of the two, and the graphite is flake graphite, or graphite powder, or a mixture of the two.

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PUM

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Abstract

The invention belongs to the technical field of electrolytic cell structures, particularly relates to a cathode paste material and aims to provide a cathode paste material capable of reducing contact pressure reduction between a cathode block and a steel bar. In order to solve the problem, the invention provides the scheme as follows: the cathode paste material comprises the following components in percentage by weight: 1-80% of iron powder, 1-20% of asphalt, 0-20% of anthracene oil, 0-35% of graphite and 0-55% of electrically calcined anthracite or metallurgical cokes. The cathode paste material has the beneficial effects of effectively reducing the contact pressure reduction between the cathode block and the steel bar, further reducing the cell voltage and saving the electric energy.

Description

[0001] technical field [0002] The invention belongs to the technical field of electrolytic cell structure, and in particular relates to a cathode paste. Background technique [0003] The cathode in the modern aluminum electrolysis industry is composed of aluminum liquid, cathode carbon block and cathode steel rod. The assembly quality of cathode carbon block and cathode steel rod is an important factor affecting the pressure and energy efficiency of the electrolytic cell. [0004] The assembly process for cathode carbon block and cathode steel rod mainly includes phosphorus pig iron casting and carbon paste tamping. The phosphorus pig iron casting method can closely connect the cathode carbon block and the steel rod, and has good electrical contact performance. It is easy to produce corner cracks and dovetail top corner cracks. The above shortcomings make phosphorus pig iron casting still difficult to popularize. [0005] At present, the assembly process adopted by m...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 不公告发明人
Owner HUNAN CHUANGYUAN NEW MATERIALS
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