Method for preparing high-purity titanium through calcium in-situ distillation-deoxygenation
A high-purity, in-situ technology, applied in the field of metal smelting, can solve problems such as high energy consumption and pollution of titanium products, and achieve the effects of reducing energy consumption, high solubility, and reducing activity
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Embodiment 1
[0036] Take 1 metal titanium plate with a mass of 15g and an oxygen content of 850ppm, press (CaCl 2 ): m(Ti)=40:1 Weigh 600g of anhydrous calcium chloride (dehydrated at 600°C for 36 hours before use), weigh 60g of high-purity calcium chips (at 1300°C, calcium in anhydrous calcium chloride molten salt 0.5 times the saturation solubility), metal titanium and anhydrous calcium chloride are filled in the titanium crucible, high-purity calcium chips are filled in the gap between the titanium crucible and the superalloy crucible, and then the superalloy crucible is sealed with a high temperature sealing gasket In good condition, as attached figure 1 shown.
[0037] Put the sealed crucible into a high-temperature alloy vacuum tank heated by a resistance furnace, cover the furnace cover, evacuate to 0.2 Pa, and then wash with argon. Under the protection of argon, heat up to 1300°C at 5°C / min, and keep at 1300°C for 12 hours. After the heat preservation is over, the furnace is cool...
Embodiment 2
[0039] Take 1 metal titanium plate with a mass of 22g and an oxygen content of 840ppm, press (CaCl 2 ): m(Ti)=20:1 Weigh 440g of anhydrous calcium chloride (dehydrated at 500°C for 24 hours before use), and weigh 176g of distilled calcium chips (at 1300°C, calcium saturated in anhydrous calcium chloride molten salt 2 times the solubility), metal titanium and anhydrous calcium chloride are filled in the titanium crucible, and the distilled calcium chips are filled in the gap between the titanium crucible and the high-temperature alloy crucible, and then the high-temperature alloy crucible is sealed with a high-temperature sealing gasket. Specific as attached figure 1 shown.
[0040] Put the sealed crucible into a high-temperature alloy vacuum tank heated by a resistance furnace, cover the furnace cover, evacuate to 0.2 Pa, and then wash with argon. Under the protection of argon, heat up to 1300°C at 5°C / min, and keep at 1300°C for 12 hours. After the heat preservation is over...
Embodiment 3
[0042] Get 1 metal titanium wire, quality 15g, oxygen content 690ppm, according to (CaCl 2 ): m(Ti)=30:1 Weigh 450g of anhydrous calcium chloride (dehydrated at 400°C for 30h before use), weigh 146g of industrial calcium chips (at 1000°C, calcium saturated in anhydrous calcium chloride molten salt 5 times of the solubility), metal titanium and anhydrous calcium chloride are filled in the titanium crucible, industrial calcium chips are filled in the gap between the titanium crucible and the stainless steel crucible, and then the stainless steel crucible is sealed with a high-temperature sealing gasket, specifically as follows attached figure 1 shown.
[0043] Put the sealed crucible into a vacuum tank heated by a resistance furnace, cover the furnace cover, vacuumize to 0.4 Pa, and then wash with argon. Under the protection of argon, heat up to 1000°C at 5°C / min, and keep it at 1000°C for 48 hours. After the heat preservation is over, the furnace is cooled to room temperature...
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