Aluminum liquid horizontal measurement method and tool

Abstract

The invention relates to a measuring method and the measuring tool of aluminum liquid level in an electrolytic tank in the aluminum electrolytic production. The measuring method uses a standing edge board of the electrolytic tank with uneasy deformation as a reference plane and a reference zero point 0, the distance from the reference zero point 0 to the upper surface of a cathode carbon block inside the electrolytic tank is set to be L1, a reference level rod of the measuring tool is hanged over the reference plane, a measuring crooked chisel that is vertically fixed with the reference level rod is inserted into the aluminum liquid of the electrolytic tank and then pulled out, and consequently the distance L2 from the reference zero point to a level demarcation point between the electrolyte and the aluminum liquid is measured, and the level height of the aluminum liquid H is calculated by subtracting L2 from L1. The vertical measuring crooked chisel of the measuring tool has the length of H1, wherein, H1 is less than L1 and more than L2. The measuring method of the invention is convenient, simple and fast, uses the measuring tool with simple structure and low cost, is applicable to the production working of various aluminum electrolytic tanks, has high measurement precision, accurate measured data and reinforced guidance to the aluminum electrolytic production, and consequently improves each economic technical index of the aluminum electrolytic production.

Description

1. Technical field [0001] The invention relates to a method for measuring the level of molten aluminum in an electrolytic cell and a measuring tool used in aluminum electrolysis production. 2. Background technology [0002] At present, in the production of electrolytic aluminum industry in my country, the side-inserted self-baking aluminum electrolytic cell has been completely eliminated, and the pre-baked anode electrolytic cell is used instead, and the 200kA large-scale pre-baked anode electrolytic cell is the main cell type. In the production of electrolytic aluminum, the control of the level of molten aluminum in the electrolytic cell is particularly critical. If the level of aluminum liquid is too high, because the thermal conductivity of aluminum liquid is very good, it will reduce the temperature of the electrolyte liquid, cause the anode effect to occur in advance, waste electric energy, reduce the current efficiency, and is the main cause of the cold tank in the sic...

AI Technical Summary

Problems solved by technology

However, in actual production, because the bottom of the tank at the aluminum outlet is prone to sedimentation, or the cathode carbon block often peels off the explosive layer, resulting in uneven pits, etc., the measured height of the aluminum liquid is too large, and the value cannot accurately reflect the tank. The average level of the internal aluminum liquid has a large error, which has a major impact on guiding the production of electrolytic aluminum. In serious cases, the measured value does not even have guiding significance

If measuring in other parts of the electrolytic cell, it is necessary to pull out the anode there, which requires a lot of work and great interference to the electrolytic cell. It is not suitable for frequent measurement at all. It is only used for inventory in the cell and cannot be used at ordinary times.

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