Aluminum oxide concentration control method based on aluminum electrolytic cell

一种基于铝电解槽的氧化铝浓度控制方法

Abstract

The invention discloses an aluminum oxide concentration control method based on an aluminum electrolytic cell. The method comprises the following steps that a model is firstly built; then the electrolyte sampling density and sampling temperature are collected; digital filtering is carried out on the sampling density, density compensation is carried out based on the temperature after the weighted mean of the sampling density is calculated, and an equivalent density value is obtained; a control unit obtains an aluminum oxide concentration value according to a concentration/density relation curve; and finally the control unit controls a cell control machine to carry out feeding towards the electrolytic cell according to the aluminum oxide concentration. According to the novel aluminum oxide concentration monitor method, compared with the prior art, the material input quantity can be controlled precisely in real time, and the aim of precisely controlling the aluminum oxide concentration is achieved.
本发明公开了一种基于铝电解槽的氧化铝浓度控制方法,包括如下步骤:首先建立模型,然后采集电解液抽样密度以及抽样温度,对抽样密度进行数字滤波,并抽样密度的加权均值后基于温度进行密度补偿,获取等效密度值,控制单元依据所述浓度/密度关系曲线,获取氧化铝浓度值,最后,控制单元依据所述氧化铝浓度,控制槽控机向电解槽投料。本发明提供氧化铝浓度监控新方法,相比于现有技术,可以精确并实时控制物料投入量,并达到精确控制氧化铝浓度的目的。

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Patent Citations (3)

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NO-Patent Citations (1)

    Title
    厉衡隆: "《铝冶炼生产技术手册》", 31 July 2011

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