Method for preparing Ti-Fe alloy by direct reduction of ilmenite
A technology of ilmenite and ti-fe, which is applied in photographic crafts, instruments, photographic auxiliary crafts, etc., can solve the problems of few raw material sources in the remelting method, can not meet the needs of users, and high oxygen content of ilmenite alloys, so as to improve the electrochemical performance. The effect of deoxidation efficiency, low production cost and high product quality
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Embodiment 1
[0022] (1) Using ilmenite as raw material and carbon powder as reducing agent, bond ilmenite powder, carbon powder accounting for 12% by mass of ilmenite powder and PVA accounting for 2% by mass of ilmenite powder The agent is mixed evenly, and then pressed into a block, and then calcined at 1000°C for 4 hours in a reducing atmosphere to make a block pre-reduced ilmenite electrode;
[0023] (2) With basic [Bmim]Cl -AlCl 3 The ionic liquid is used as the electrolyte, the pre-reduced ilmenite electrode obtained in step (1) is used as the cathode, graphite or other inert materials are used as the anode, and the electrolysis voltage is 3.0V and the electrolysis temperature is 80°C for 14 hours, and then the cathode is taken out , After washing and drying, the Ti-Fe alloy is obtained. The oxygen content of the Ti-Fe alloy is less than 600ppm.
Embodiment 2
[0025] (1) Using ilmenite as raw material and carbon powder as reducing agent, mix evenly ilmenite powder, water and carbon powder accounting for 7% of the mass percentage of ilmenite powder, wherein water accounts for 10% of the total mass of the mixture , and then make pellets with a diameter of 2mm, and then calcined at 1000°C for 2h in a reducing atmosphere of carbon monoxide, and finally put the pellets into a conductive titanium mesh with 120 meshes to make a pre-reduced ilmenite electrode ;
[0026] (2) Take [Bmim]PF 6 The ionic liquid is used as the electrolyte, the pre-reduced ilmenite electrode obtained in step (1) is used as the cathode, graphite or other inert materials are used as the anode, and the electrolysis voltage is 3V and the electrolysis temperature is 100°C for 14 hours, and then the cathode is taken out. After washing and drying, the Ti-Fe alloy is obtained. The oxygen content of the Ti-Fe alloy is less than 500 ppm.
Embodiment 3
[0028] (1) Using ilmenite as raw material and carbon powder as reducing agent, mix ilmenite powder, water and carbon powder accounting for 10% of the mass percentage of ilmenite powder evenly, wherein water accounts for 6% of the total mass of the mixture , and then made into pellets with a diameter of 1 mm, and then calcined at 1100 ° C for 1 h in a reducing atmosphere, and finally packed the pellets into a conductive titanium mesh with 200 meshes to make a pre-reduced ilmenite electrode;
[0029] (2) with [Bmim]NTf 2 The ionic liquid is used as the electrolyte, the pre-reduced ilmenite electrode obtained in step (1) is used as the cathode, graphite or other inert materials are used as the anode, the electrolysis voltage is 2.8V, and the electrolysis temperature is 25°C for 16 hours, and then the cathode is taken out , After washing and drying, the Ti-Fe alloy is obtained. The oxygen content of the Ti-Fe alloy is less than 500 ppm.
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