Preparation method of lead electrobath for transitting to electrolysis in low termperature

Abstract

This invention relates to a low-temperature electrolysis method electrolyzing aluminum in an aluminum electrolytic tank. The method comprises: (1) adjusting the electrolyte composition to lower the initial crystallization temperature; (2) controlling the voltage of the electrolytic tank; (3) controlling overheat of the electrolysis; (4) controlling the aluminum level; (5) controlling the intelligent fuzzy parameters; (6) finely operating. The method can improve the electrolytic conditions of the electrolytic tank, lower the initial crystallization temperature of 905-915 deg.C and the electrolysis temperature to 915-930 deg.C, raise the current efficiency, and reduce the electricity consumption.

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 temp...

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.