[China Aluminum Network] Preparation of electrolytic aluminum is obtained by electrolytic aluminum.
High-temperature cylinders used in electrolyzers for electrolytic cells are important to pass this equation: 2Al2O3==4Al+3O2.
Anode: 2O2ˉ-4eˉ=O2↑
Cathode: Al3++3eˉ=Al
The modern aluminum industry produces modern aluminum industry production using cryolite-alumina molten salt electrolysis. Molten cryolite is a solvent, alumina as a solute, carbon body as anode, aluminum liquid as a cathode, and after passing a powerful direct current, electrochemical reactions are performed at the two poles of the electrolytic cell at 950°C-970°C. Electrolysis. Anode products are mainly carbon dioxide and carbon monoxide gas, which contains a certain amount of harmful gases such as hydrogen fluoride and solid dust. In order to protect the environment and human health, it is necessary to purify the anode gas, remove harmful gases and dust, and discharge it into the atmosphere. The cathode product is aluminum liquid. Aluminum liquid is pumped out from the tank by vacuum lifting and sent to the foundry. After purified and clarified in the holding furnace, it is cast into aluminum ingots or directly processed into wire blanks and profiles.
Production process The production process is as follows:
Aluminum oxide fluoride carbon anode anode
↓
Emission of anode gas - electrolytic tank
Exhaust gas ↠gas purification aluminum liquid helium
Recovery fluoride purification clarification
Return to cell casting, rolling or casting
Aluminum ingots or profile equations Electrolytic aluminum is aluminum obtained by electrolysis.
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