Aluminum cell anode effect prediction device

Abstract

The invention discloses an aluminum cell anode effect prediction device belonging to the technical field of aluminum electrolysis. The device comprises an isometric pressure drop measuring fork, a temperature sensor, a current distribution on-line monitor for processing output signals of a measuring fixture, a ZIGBEE wireless network for signal transmission, and a control device for warning processing according to the received signals. The invention also discloses an aluminum cell anode effect prediction method which comprises the following steps: correcting isometric pressure drop values based on measured temperature values to obtain the current value of each aluminum cell anode rod, normalizing the difference between the current value and an ideal current value, comparing the normalizing result with a preset threshold, and judging whether the measured aluminum cell anode rod is subjected to the anode effect. The invention can monitor the distribution of current in the normal production process of the aluminum cell in real time and give an early warning, thereby effectively ensuring that the effect can be eliminated and harm caused by the effect can be reduced as early as possible.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a device for predicting the anode effect of an aluminum electrolytic cell. Background technique [0002] During the normal production process of the aluminum electrolytic cell, the oxygen-containing ions in the electrolyte gradually decrease with the progress of the electrolysis process. When this situation reaches a certain level, the precipitated fluorine reacts with the anode carbon block to form carbon fluoride; The fine carbon particles generated after the decomposition of carbon fluoride adhere to the surface of the anode, forming a poorly conductive gas film between the electrolyte and the anode. As this situation spreads further, the anode voltage increases sharply, causing the anode effect. [0003] The anode effect will cause great harm to the normal production of the aluminum electrolytic cell. When the anode effect occurs, the temperature of the electro...

AI Technical Summary

Problems solved by technology

Although the above method can eliminate the anode effect to a certain extent and shorten the time of the anode effect, it cannot give an early warning in the early stage of the effect, that is, when the gas film wraps an anode and the voltage rise is not obvious, let alone determine the initial position of the anode effect. It will also cause serious loss of molten aluminum

Images