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A kind of electrolytic cell in the production of aluminum inventory method

A technology of electrolytic cell and aluminum plate, which is applied in the field of aluminum electrolytic production, can solve problems such as large deviations in aluminum production data, achieve low prices, facilitate cost control, and have a reference effect

Active Publication Date: 2016-10-05
山西中铝华润有限公司
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Problems solved by technology

[0006] In order to solve the problem of large deviations in the aluminum production data of electrolytic cells in the production of electrolytic aluminum, the present invention further provides a method for inventorying aluminum in production in electrolytic cells

Method used

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Embodiment Construction

[0028] Due to the low melting point of zinc element (419.58°C), and its small impact on the quality of primary aluminum and low cost, zinc is selected as the tracer element for the inventory of aluminum in production. The specific operation steps for the quality of aluminum in inventory are as follows:

[0029] (1) Select an inventory tank, take an aluminum sample at the aluminum outlet and flue outlet of the inventory electrolytic cell, test the content of the trace element zinc in the two aluminum samples, and take the average value a1 of the zinc content in the two aluminum samples , and record the sampling time;

[0030] (2) After taking the background aluminum sample, weigh 6kg of zinc material and cut it into 10-20 pieces to ensure that the zinc material can be fully dissolved in the electrolytic cell within the predetermined time, and fully preheat the zinc material After making it dry and free of moisture, divide it into two parts (each part 3kg) to support the cut zin...

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Abstract

The invention belongs to the technical field of aluminum electrolysis production, and specifically relates to a novel electrolytic tank in-production aluminum inventory method. The invention aims to solve the problem of large deviation of inventory of in-production aluminum in electrolytic tank during the production process, and provides a novel electrolytic tank in-production aluminum inventory method. The method takes zinc as the trace element, comprises steps of determining added zinc amount (m), preheating the zinc, analyzing the zinc content (a1) in an original aluminum sample, adding zinc, sampling so as to obtain an aluminum sample, and analyzing the zinc content (a2) of the obtained aluminum sample, and finally calculates the in-production aluminum amount by substituting the obtained values into a formula: M=[m*k-(m+n)*a2] / (a2-a1). The preparation method has the advantages of simpler operation and more convenience, compared to the aluminum inventory method through adding copper as the trace element. Moreover, the inventory result is more precise, more reliable, and more valuable for guiding production, and the cost is lower.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolytic production, and in particular relates to an inventory method for aluminum being produced in an electrolytic cell. Background technique [0002] In aluminum electrolysis production, the most important evaluation indicators are cell voltage and current efficiency. Under the same cell voltage, the level of current efficiency determines the quality of economic indicators. When calculating the current efficiency, in addition to the statistics of the amount of aluminum produced, the most important link is the calculation of the amount of aluminum in the electrolytic cell, that is, the inventory of aluminum in the electrolytic cell. Accurate inventory of the amount of aluminum in the electrolytic cell has important guiding significance for actual production. [0003] In the current aluminum electrolytic production, there are two methods for inventorying the amount of liquid aluminum in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/20
Inventor 尚慧明师树英李国维薛峰平王玉霞毋海军
Owner 山西中铝华润有限公司
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