A method for extracting vanadium from vanadium-titanium magnetite
A technology for vanadium titanomagnetite and concentrate is applied in the field of vanadium extraction, which can solve the problems of large amount of roasting additives, large amount of additives, long roasting time, etc., and achieve the effects of shortening roasting time, promoting dissolution, and reducing roasting temperature.
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Embodiment 1
[0024] A method for extracting vanadium from vanadium-titanium magnetite. The method described in this embodiment is: first grind the vanadium-titanium-magnetite concentrate until the particle size is less than 0.074mm and account for more than 60wt% to obtain the vanadium-titanium-magnetite concentrate powder; press the vanadium-titanium-magnetite concentrate The mass ratio of powder: roasting additive is 1: (0.04~0.047), and the vanadium-titanium magnetite concentrate powder and the roasting additive are evenly mixed to obtain a mixture; Then the mixture is heated to 850~900°C, kept warm for 0.5~1.0h, cooled to room temperature to obtain roasted slag; then according to the liquid-solid ratio (2~2.4): 1L / Kg, put the roasted slag into a sulfuric acid solution with a volume concentration of 10 to 14%, stirred at 90 to 94°C for 1.5 to 1.9 hours, and separated from solid and liquid to obtain leaching liquid and leaching residue.
[0025] The roasting additive is a mixture of pot...
Embodiment 2
[0027] A method for extracting vanadium from vanadium-titanium magnetite. The method described in this embodiment is: first grind the vanadium-titanium-magnetite concentrate until the particle size is less than 0.074mm and account for more than 60wt% to obtain the vanadium-titanium-magnetite concentrate powder; press the vanadium-titanium-magnetite concentrate The mass ratio of powder:roasting additive is 1:(0.047~0.053), and the vanadium-titanium magnetite concentrate powder and the roasting additive are evenly mixed to obtain a mixture. Then the mixture is heated to 900~950°C, kept warm for 0.8~1.3h, cooled to room temperature to obtain roasted slag; then according to the liquid-solid ratio (2.3~2.7): 1L / Kg, put the roasted into a sulfuric acid solution with a volume concentration of 13-17%, stirred at 93-97°C for 1.8-2.2 hours, and separated from solid and liquid to obtain leaching liquid and leaching residue.
[0028] The roasting additive is a mixture of potassium salt a...
Embodiment 3
[0030] A method for extracting vanadium from vanadium-titanium magnetite. The method described in this embodiment is: first grind the vanadium-titanium-magnetite concentrate until the particle size is less than 0.074mm and account for more than 60wt% to obtain the vanadium-titanium-magnetite concentrate powder; press the vanadium-titanium-magnetite concentrate The mass ratio of powder:roasting additive is 1:(0.053~0.06), and the vanadium-titanium magnetite concentrate powder and the roasting additive are evenly mixed to obtain a mixture. Then the mixture is heated to 950~1000°C, kept for 1.0~1.5h, cooled to room temperature to obtain roasted slag; then according to the liquid-solid ratio (2.6~3): 1L / Kg, put the roasted slag into a sulfuric acid solution with a volume concentration of 16-20%, stirred at 96-100°C for 2.1-2.5 hours, and separated from solid and liquid to obtain leaching liquid and leaching residue.
[0031] The roasting additive is a mixture of potassium salt an...
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