Method for producing aluminium and aluminium alloy by low temperature electrolysis
An aluminum alloy and low-temperature technology, which is applied in the field of low-temperature electrolysis to produce aluminum and aluminum alloys, can solve the problems of high cost and high electrolysis temperature, and achieve the effects of high power utilization rate, low melting point, and wide source of raw materials
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Embodiment 1
[0015] The raw material used is aluminum oxide, 80% by weight of aluminum oxide and 20% by weight of petroleum coke are uniformly mixed, and chlorine gas is introduced into a boiling reactor for chlorination. A certain amount of dry air is introduced into the chlorination process, and the chlorination temperature is 900°C, and the AlCl coming out of the reactor 3 The gas, after being filtered and purified, enters the condenser and condenses into AlCl 3 solid.
[0016] Prepare AlCl 3 -EMIC (chloro-1-ethyl-3-methylimidazole) ionic liquid, AlCl 3 The molar ratio to EMIC is 1.5-2:1-0.5. Using the ionic liquid as the electrolyte, direct current electrolysis, using high-purity graphite as the anode, and solid aluminum as the cathode, the cathode and anode of the electrolytic cell are vertically arranged, and the electrode surfaces are parallel to each other. The electrodes arranged in this way can also install multiple sets of electrodes in the same tank, that is, Yang-Yin-Yang-...
Embodiment 2
[0018] The raw material used is coal gangue, the coal gangue with a weight percentage of 80% and the petroleum coke with a weight percentage of 20% are evenly mixed, and chlorine gas is introduced into a boiling reactor for chlorination. A certain amount of dry air is introduced during the chlorination process, and the chlorination temperature is 700°C, and the AlCl coming out of the reactor 3 The gas, after being filtered and purified, enters the condenser and condenses into AlCl 3 solid.
[0019] Prepare AlCl 3 -BPC (chloro-1-butylimididine) ionic liquid, AlCl 3 The molar ratio with BPC is 1~2:1~2. Using the ionic liquid as the electrolyte, direct current electrolysis, using high-purity graphite as the anode, and solid aluminum as the cathode, the cathode and anode of the electrolytic cell are vertically arranged, and the electrode surfaces are parallel to each other. The electrodes arranged in this way can also install multiple groups of electrodes in the same tank, tha...
Embodiment 3
[0021] The used raw material bauxite is uniformly mixed with 80% by weight of bauxite and 20% by weight of activated carbon, and chlorine gas is introduced into a boiling reactor for chlorination. A certain amount of dry air is introduced into the chlorination process, and the chlorination temperature is 800°C, and the AlCl coming out of the reactor 3 The gas, after being filtered and purified, enters the condenser and condenses into AlCl 3 solid.
[0022] Prepare AlCl 3 -[bmim]BF 4 (1-Ethyl-3-methylimidazolium tetrafluoroborate) Ionic Liquid, AlCl 3 with [bmim] BF 4 The molar ratio of is 1~1.5:1~1.5. Using the ionic liquid as the electrolyte, direct current electrolysis, using high-purity graphite as the anode, and solid aluminum as the cathode, the cathode and anode of the electrolytic cell are vertically arranged, and the electrode surfaces are parallel to each other. The electrodes arranged in this way can also install multiple sets of electrodes in the same tank, th...
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