Method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction
View Patent ↗The invention provides a method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and zinc are mixed under a vacuum state, and the mixture is then reacted with potassium fluotitanate; a distillation step: KF, AlF 3 and Zn generated by reaction are distilled out under a vacuum state; and a cooling step: sponge titanium is obtained subsequent to banking cooling. The invention further provides another method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and magnesium are mixed under a vacuum argon introduction condition, and the mixture is then reacted with potassium fluotitanate; a distillation step: KF, AlF 3 , MgF 2 and Mg generated by reaction are distilled out under a vacuum state; and a cooling step: sponge titanium is obtained subsequent to banking cooling.
1. A method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, characterized in that, the method comprises the following steps:
a reaction step: aluminum and zinc are mixed under a vacuum state to form a mixture, and the mixture is then reacted with potassium fluotitanate;
a distillation step: KF, AlF 3 and Zn generated by reaction are distilled out under a vacuum state; and
a cooling step: sponge titanium is obtained subsequent to banking cooling;
wherein a mass ratio of the aluminum to the zinc is 1:2 to 1:10.
2. The method for preparing sponge titanium according to claim 1 , wherein a reaction temperature in the reaction step is 800° C.
3. The method for preparing sponge titanium according to claim 1 , wherein a distillation temperature in the distillation step is 1000° C.
4. The method for preparing sponge titanium according to claim 1 , wherein a cooling time in the cooling step is 10 hours.
5. The method for preparing sponge titanium according to claim 4 , wherein a cooling rate in the cooling step is 1° C./min.
6. A method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, characterized in that, the method comprises the following steps:
a reaction step: aluminum and magnesium are mixed under a vacuum argon introduction condition to form a mixture, and the mixture is then reacted with potassium fluotitanate;
a distillation step: KF, AlF 3 , MgF 2 and Mg generated by reaction are distilled out under a vacuum state; and
a cooling step: sponge titanium is obtained subsequent to banking cooling;
wherein a mass ratio of the aluminum to the magnesium is 1:1 to 1:10.
7. The method for preparing sponge titanium according to claim 6 , wherein a reaction temperature in the reaction step is 750° C.
8. The method for preparing sponge titanium according to claim 6 , wherein a distillation temperature in the distillation step is 1100° C.
9. The method for preparing sponge titanium according to claim 6 , wherein a cooling time in the cooling step is 10 hours.
10. The method for preparing sponge titanium according to claim 9 , wherein a cooling rate in the cooling step is 1° C./min.
11. A method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, characterized in that, the method comprises the following steps:
a reaction step: aluminum, magnesium and zinc are mixed under a vacuum argon introduction condition to form a mixture, and the mixture is then reacted with potassium fluotitanate;
a distillation step: KF, AlF 3 , MgF 2 , Mg and Zn generated by reaction are distilled out under a vacuum state; and
a cooling step: sponge titanium is obtained subsequent to banking cooling;
wherein a mass ratio of the aluminum to the zinc to the aluminum is 2:8:0.1 to 1:4:1.
12. The method for preparing sponge titanium according to claim 11 , wherein a reaction temperature in the reaction step is 800° C.
13. The method for preparing sponge titanium according to claim 11 , wherein a distillation temperature in the distillation step is 1100° C.
14. The method for preparing sponge titanium according to claim 11 , wherein a cooling time in the cooling step is 10 hours.
15. The method for preparing sponge titanium according to claim 14 , wherein a cooling rate in the cooling step is 1° C./min.