Cathode charcoal block set specific resistance measuring method

A cathode carbon block and measurement method technology, applied in the field of aluminum electrolysis, can solve the problems of poor reliability of detection data, long detection distance, and few detection points

Active Publication Date: 2014-12-31
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

[0004] Disadvantages of the original measurement method: (1) There are few detection points, and the reliability of the detection data is poor; (2) The detection distance is long, the impact of the detection distance is ignored, and the data accuracy is low; (3) The measurement current used is large, and the heat generated by the large current is ignored. (4) The measurement time is not clear; (5) The detection equipment is backward and the data accuracy is low

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  • Cathode charcoal block set specific resistance measuring method

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Embodiment 1

[0044] The specific technical solution of the measuring method of the present invention is: (1) Selection of the measuring position. When used in the electrolytic cell, the current is from the surface of the cathode carbon block to the cathode steel rod through the assembled bottom pad and vertical seam, and then from the cathode steel rod to the bus bar. The specific resistance of the carbon block group is the best choice. From the perspective of fracture mechanics, materials that appear to be very sound on the surface hide many cracks that are so small that the naked eye cannot detect them under the detection of modern flaw detection technology. Since there are cracks, it is clear that the cracks will affect the measured value. In order to reduce this error, the best way is to narrow the measurement interval. Therefore, the measurement position should be selected on the bottom surface of the cathode carbon block; (2) Selection of measurement distance. According to the vie...

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Abstract

The invention relates to the aluminium electrolysis industry, concretely relating to an aluminium electrolysis groove overhaul cathode charcoal block set specific resistance measuring method. The measuring method comprises the following steps: (1) selecting a measuring position; (2) selecting a number of measuring points; (3) selecting a measuring spacing; (4) selecting measuring current and time length; (5) selecting a temperature of a measured cathode charcoal block; (6) completing measurement. A resistance multi-point spacing detection average measuring method in the invention is an effective cathode charcoal block set specific resistance measuring controlling method, standardizing an industry detection method is facilitated, cathode charcoal block assembly quality is raised, cathode voltage drop is reduced, power consumption is reduced, and a life of an electrolysis groove is prolonged.

Description

technical field [0001] The invention relates to the aluminum electrolysis industry, in particular to a method for measuring the specific resistance of a cathode carbon block group for overhauling an aluminum electrolytic cell. Background technique [0002] The control of the specific resistance of the cathode carbon block group in the overhaul of the electrolytic cell in the aluminum electrolysis industry is still in the groping stage, and most companies ignore the specific resistance measurement link, ignoring the reduction in the specific resistance of the cathode carbon block group, which reduces the cathode voltage drop for the electrolytic cell and reduces power consumption. and improve the current efficiency. In order to completely change this phenomenon, an effective detection method is adopted. [0003] The original measurement method: place the probe at one end on the steel rod in the center of the carbon block, and place the probe at the other end at the midpo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/08C25C3/08C25C3/20
Inventor 张耀海祁文青王平董卫平张爱新万五世崔洪中杨彩云师伟
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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