Measurement method of aluminum liquid interface fluctuation

Abstract

The invention discloses a measurement method of aluminum liquid interface fluctuation. The method comprises the following steps: step one, collecting anode current of each anode in an aluminum electrolysis cell and calculating an anode current fluctuation coefficient of each anode; step two, obtaining a theoretical aluminum liquid interface height and a position coordinate corresponding to each anode by using a CFD current field simulation technology, and correcting the theoretical aluminum liquid interface height by using the anode current fluctuation coefficient to obtain an aluminum liquidinterface actual height of each anode; step three, obtaining an aluminum liquid interface actual height and a coordinate position of each sample point in the whole electrolysis cell by using a Krigingspatial interposition method according to the aluminum liquid interface actual height and the position coordinate of each anode; and step four, building a three-dimensional coordinate system throughthe position coordinate and the aluminum liquid interface actual height of each sample point in the electrolysis cell and drawing a three-dimensional diagram and a two-dimensional contour diagram of the aluminum liquid interface. The three-dimensional diagram and the two-dimensional contour diagram obtained by the method are capable of visually reflecting the aluminum liquid interface fluctuationcondition.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis, and in particular relates to a method for measuring interface fluctuations of molten aluminum. Background technique [0002] The measurement and acquisition technology of the height of the molten aluminum is one of the important technical conditions of the electrolytic cell. The measurement result determines the amount of aluminum produced, and is also crucial to grasp the operating status of the electrolytic cell, especially the heat balance state. Under the action of the electromagnetic field force in the electrolytic cell, the interface of the molten aluminum will produce continuous fluctuations. This continuous fluctuation will cause continuous changes in the pole distance. stability. The traditional method of measuring the height of molten aluminum is to use manual measurement. Generally, the height of molten aluminum is measured at multiple points, and then a rough value is o...

AI Technical Summary

Problems solved by technology

Under the action of the electromagnetic field force in the electrolytic cell, the interface of the molten aluminum will produce continuous fluctuations. This continuous fluctuation will cause continuous changes in the pole distance. stability

The traditional method of measuring the height of molten aluminum is to use manual measurement. Generally, the height of molten aluminum is measured at multiple points, and then a rough value is obtained by taking the average value. Make a decision as a whole and adjust the pole distance in time

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