A kind of method utilizing calcium vanadate to prepare vanadium aluminum alloy
A technology for vanadium-aluminum alloy and calcium vanadate, which is applied in the field of preparing vanadium-aluminum alloy by using calcium vanadate, can solve the problems of uncontrollable, complex vanadium-aluminum alloy preparation process, easy splashing reaction heat, etc., so as to improve production efficiency and save energy. Labor cost and raw material cost, high purity effect
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Embodiment 1
[0021] A method for preparing vanadium-aluminum alloy by using calcium vanadate, comprising the following process steps:
[0022] (1) Take 1 g of calcium vanadate and 0.7 g of aluminum powder and mix them evenly for 10 minutes.
[0023] Among them, the particle diameters of calcium vanadate and aluminum powder are both less than or equal to 125 μm.
[0024] Calcium vanadate contains the following mass percent elements: V 2 o 5 : 36.17%, CaO: 62.8%, SiO 2 : 0.04%, Al: 0.02%, Fe: 0.035% and unavoidable impurities;
[0025] Aluminum powder contains the following elements by mass percentage: Al: 99.6%, Si: 0.08%, Fe: 0.09% and other unavoidable impurities.
[0026] (2) Put the mixed calcium vanadate and aluminum powder into a graphite crucible, pass through argon gas at a flow rate of 0.9 L / min, and heat to 1500° C. for 40 min in an argon atmosphere.
[0027] Among them, the technical index of graphite crucible is: volume density 1.8g / cm 3 , flexural strength 10.2MPa, ash 0....
Embodiment 2
[0030] (1) Take 1 g of calcium vanadate and 0.6 g of aluminum powder and stir and mix for 15 minutes.
[0031] Among them, the particle diameters of calcium vanadate and aluminum powder are both less than or equal to 125 μm.
[0032] Calcium vanadate contains the following mass percent elements: V 2 o 5 : 41.3%, CaO: 58.4%, SiO 2 : 0.05%, Al: 0.03%, Fe: 0.04% and unavoidable impurities;
[0033] Aluminum powder contains the following elements by mass percentage: Al: 99.6%, Si: 0.07%, Fe: 0.10% and unavoidable impurities.
[0034] (2) Put the mixed calcium vanadate and aluminum powder into a graphite crucible, pass through argon gas at a flow rate of 0.9 L / min, and heat to 1550° C. for 60 min in an argon atmosphere.
[0035] Among them, the technical index of graphite crucible is: volume density 1.8g / cm 3 , flexural strength 10.2MPa, ash 0.21%, porosity 12%.
[0036] (3) Cool naturally to 45°C, remove the slag layer, and obtain AlV65 vanadium aluminum alloy, which meets t...
Embodiment 3
[0038] (1) Take 1 g of calcium vanadate and 0.5 g of aluminum powder and mix them evenly for 18 minutes.
[0039] Among them, the particle diameters of calcium vanadate and aluminum powder are both less than or equal to 125 μm.
[0040] Calcium vanadate contains the following mass percent elements: V 2 o 5 : 52.1%, CaO: 47.6%, SiO 2 : 0.045%, Al: 0.035%, Fe: 0.042% and unavoidable impurities;
[0041] Aluminum powder contains the following elements by mass percentage: Al: 99.7%, Si: 0:07%, Fe: 0.05% and unavoidable impurities.
[0042] (2) Put the mixed calcium vanadate and aluminum powder into a graphite crucible, pass through argon gas at a flow rate of 0.8 L / min, and heat to 1600° C. for 30 min in an argon atmosphere.
[0043] Among them, the technical index of graphite crucible is: volume density 1.8g / cm 3 , flexural strength 10.2MPa, ash 0.21%, porosity 12%.
[0044] (3) Cool naturally to 48°C, remove the slag layer, and obtain AlV75 vanadium aluminum alloy, which m...
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