Influence of Carbon Slag Produced in Aluminum Electrolysis on the Electrolysis Process
There are six types of aluminum oxidation: natural oxidation, electrochemical oxidation, chemical oxidation, alkaline oxidation, acid oxidation, and anodic oxidation, which means the oxidation treatment of aluminum and aluminum alloys. Today, Cangqing Metal will talk to you about the impact of carbon slag produced in aluminum electrolysis on the electrolysis process.
There are six types of aluminum oxidation: natural oxidation, electrochemical oxidation, chemical oxidation, alkaline oxidation, acid oxidation, and anodic oxidation, which means the oxidation treatment of aluminum and aluminum alloys. Today, Cangqing Metal will talk to you about the impact of carbon slag produced in aluminum electrolysis on the electrolysis process.
The influence of carbon slag produced in aluminum electrolysis on the electrolysis process (1)
In the normal production process, with the continuous production of aluminum electrolysis, the carbon anode is slowly consumed as the production progresses. The carbon slag produced by the normal production of anode consumption can be smoothly removed from the electrolyte under reasonable process and technical conditions. The separation does not have much impact on production, but it is difficult to have such a relatively ideal production state in actual production. Therefore, as a production manager, we must always pay attention to the changes in the amount of carbon residue in the electrolyte to reduce the impact on electrolysis production.
1. Increase power consumption
The carbon slag in the aluminum electrolysis solution causes the resistance of the electrolyte to increase, which results in an increase in the voltage drop of the electrolyte and increases the power consumption of the aluminum electrolysis production. According to reports from relevant professionals, when the carbon slag content in the aluminum electrolyte solution reaches 1% by weight, the electrolyte conductivity decreases by about 11%. It can be seen that the adverse effect of carbon slag on the conductivity of the electrolyte is extremely significant. The smaller the particles of carbon slag, the greater the effect on reducing the conductivity of the electrolyte.
2. Form a hot groove
If the carbon slag in the electrolyte accumulates to a certain concentration, the increase in the specific resistance will inevitably cause the electrolyte voltage drop to increase, which will increase the electric energy income between the two electrodes of the electrolytic cell, causing the electrolyte to overheat and the cell temperature to increase, forming heat. groove. After the heat bath is formed, the heat balance of the electrolytic bath is destroyed, and the normal process and technical conditions are affected. At the same time, the cathode of the electrolytic bath is damaged and the life of the bath is affected. In addition, a large amount of fluoride salt is consumed when the heat bath is processed. The harmful effects are very great.
The temperature of the electrolyte has a great influence on the wear resistance of the oxide film. Generally speaking, if the temperature drops, the wear resistance of the anodic oxide film of aluminum and aluminum alloys will increase. This is caused by the decrease in the dissolution rate of the electrolyte for the film. , In order to obtain a higher hardness oxide film. We have to master the temperature within ±2℃ for hard anodizing treatment as well.
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