Preparation method of aluminum electrobath for transitting to electrolysis in low temperature

Abstract

The invention relates to an aluminum electrolysis production technology, in particular to an aluminum electrolysis cell and a low-temperature electrolysis transition production method. The production method of the present invention comprises the following steps: a) adjusting the electrolyte composition to reduce the primary crystal temperature step; b) electrolytic cell setting voltage control step; c) electrolytic overheat control step; d) aluminum level control step; e) intelligent fuzzy parameter control step ; f) Fine operation steps. The present invention has the following beneficial effects: the method of the present invention improves the production conditions of the electrolytic cell, keeps the primary crystal temperature of the electrolytic cell in a lower range (905°C-915°C) all the time, and enables electrolytic production to be carried out at an electrolytic temperature of 915°C-930°C work, the current efficiency of the electrolytic cell is improved, and the power consumption is reduced; the invention is suitable for the transition from aluminum electrolytic cells to low-temperature electrolytic production, and can also be applied to the transformation of electrolytic cells in other industries to low-temperature production.

Description

technical field [0001] The invention relates to an aluminum electrolysis production technology, in particular to a production method for the transition from an aluminum electrolysis cell to low-temperature electrolysis. Background technique [0002] The electrolysis temperature of electrolytic cells in my country is generally between 950°C and 970°C, the molecular ratio of electrolytes is between 2.5 and 2.7, the current efficiency of electrolytic cells is about 92%, and the unit consumption of primary aluminum direct current is relatively high. The existing aluminum electrolysis with high electrolysis temperature has the following disadvantages: 1. The relatively high electrolysis temperature reduces the current efficiency of the electrolysis cell, and the unit consumption of DC power is high; 2. The material volatilization loss of the electrolysis cell is large, and the unit consumption of electrolysis production materials High; 3. The electrolysis temperature is high, and...

AI Technical Summary

Problems solved by technology

The existing aluminum electrolysis with high electrolysis temperature has the following disadvantages: 1. The relatively high electrolysis temperature reduces the current efficiency of the electrolysis cell, and the unit consumption of DC power is high; 2. The material volatilization loss in the electrolysis cell is large, and the unit consumption of electrolysis production materials High; 3. The electrolysis temperature is high, and the material volatilization loss is relatively large, which affects the working environment of the workers in the electrolysis plant and brings harm to the health of the electrolysis workers

At present, the technology of aluminum electrolysis at low temperature is used to control the electrolysis temperature at 915°C to 930°C, which has not been recorded yet.