Experimental principle, process conditions, advantages and disadvantages of (1) industrial alumina for electrolytic aluminum.

Electrolytic aluminum uses industrial alumina, which is based on Hall-Elu process.

Experimental principle:

Electrolysis: mainly aluminum trioxide (Al? o？ That is, alumina, is placed in a molten electrolyte (usually a mixture of aluminum fluoride and sodium chloride) and then aluminum is extracted from it by electrolysis. The current passes through the electrolyzer, which leads to the decomposition of alumina, aluminum deposition at the bottom cathode and oxygen generation at the top anode.

Process conditions:

High temperature: the electrolysis process needs to be carried out at a high temperature of about 950 degrees Celsius.

Electricity: This process consumes a lot of electricity, so it needs a stable and sufficient power supply.

Advantages:

High purity: Very pure aluminum can be produced.

Mass production: suitable for industrial mass production.

Disadvantages:

High energy consumption: a lot of electricity is needed and the energy cost is high.

Environmental impact: If the power supply is not environmentally friendly, it will lead to greater environmental impact.

Generally speaking, the process of electrolytic aluminum is a mature industrial process, which can produce pure aluminum efficiently, but it is also a process with high energy consumption and high cost.