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A hydrogen reduction tio 2 Combined molten salt electrolysis ti 4 o 7 Method for preparing titanium metal

A technology of molten salt electrolysis and metal titanium, applied in the field of metallurgy, can solve the problems of long electrolysis time, low deoxidation efficiency, long process flow, etc., and achieve the effects of short time, improved current efficiency and low energy consumption

Active Publication Date: 2020-09-01
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies existing in the prior art, the present invention provides a hydrogen-reduced TiO 2 Combined molten salt electrolysis of Ti 4 o 7 The method for preparing metal titanium aims to solve the existing problems of long FFC process flow, long electrolysis time, and low deoxidation efficiency

Method used

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  • A hydrogen reduction tio <sub>2</sub> Combined molten salt electrolysis ti <sub>4</sub> o <sub>7</sub> Method for preparing titanium metal
  • A hydrogen reduction tio <sub>2</sub> Combined molten salt electrolysis ti <sub>4</sub> o <sub>7</sub> Method for preparing titanium metal
  • A hydrogen reduction tio <sub>2</sub> Combined molten salt electrolysis ti <sub>4</sub> o <sub>7</sub> Method for preparing titanium metal

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Effect test

Embodiment 1

[0032] The technological process of this embodiment is as figure 1 shown. Choose TiO with a purity of ≥99.8% and pass through a 140-mesh sieve 2 powder, adopt the method of the present invention to prepare metal titanium, wherein the time of molten salt electrolysis is 1 hour, and the steps are as follows:

[0033] (1) TiO 2 The powder is spread on the corundum crucible and put into the sealed tubular heating furnace, and the thickness of the laying is controlled below 3mm. After closing the furnace cover, continuously feed argon (the flow rate of argon gas is 250ml / min) to ensure the inert atmosphere in the furnace. After 3 hours, the temperature in the furnace rises from room temperature to 1300°C.

[0034] (2) After the temperature is stabilized, stop feeding argon gas and change it to hydrogen gas (hydrogen gas flow rate is 250ml / min), and keep the temperature at 1300°C for 2 hours, and the obtained Ti 4 o 7 Samples were wrapped with 400-mesh stainless steel gauze as ...

Embodiment 2

[0041] The present embodiment selects the TiO that purity is ≥ 99.8% and crosses 140 mesh sieves for use 2 powder, adopt the method of the present invention to prepare metal titanium, wherein the time of molten salt electrolysis is 6 hours, and the steps are as follows:

[0042] (1) TiO 2 The powder is spread on the corundum crucible and put into the sealed tubular heating furnace, and the thickness of the laying is controlled below 3mm. After the furnace cover is closed, argon gas is continuously introduced (the flow rate of argon gas is 250ml / min) to ensure an inert atmosphere in the furnace. After 3 hours, the temperature in the furnace rises from room temperature to 1300°C.

[0043] (2) After the temperature is stabilized, stop feeding argon gas and change it to hydrogen gas (hydrogen gas flow rate is 250ml / min), and keep the temperature at 1300°C for 2 hours, and the obtained Ti 4 o 7 Samples were wrapped with 400-mesh stainless steel gauze as the cathode raw material ...

Embodiment 3

[0050] The present embodiment selects the TiO that purity is ≥ 99.8% and crosses 140 mesh sieves for use 2 powder, adopt the method of the present invention to prepare metal titanium, wherein the time of molten salt electrolysis is 3 hours, and the steps are as follows:

[0051] (1) TiO 2 The powder is spread on the corundum crucible and put into the sealed tubular heating furnace, and the thickness of the laying is controlled below 3mm. After the furnace cover is closed, argon gas is continuously introduced (the flow rate of argon gas is 250ml / min) to ensure an inert atmosphere in the furnace. After 3 hours, the temperature in the furnace rises from room temperature to 1300°C.

[0052] (2) After the temperature is stabilized, stop feeding argon gas and change it to hydrogen gas (hydrogen gas flow rate is 250ml / min), and keep the temperature at 1300°C for 2 hours, and the obtained Ti 4 o 7 Samples were wrapped with 400-mesh stainless steel gauze as the cathode raw material ...

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Abstract

The invention discloses a metal titanium preparation method combining hydrogen reduction of TiO2 and molten salt electrolysis of Ti4O7. According to the metal titanium preparation method combining hydrogen reduction of TiO2 and molten salt electrolysis of Ti4O7, the TiO2 is used as the raw material, hydrogen is selected as a reducing agent to perform a gas-solid reduction reaction with the TiO2 raw material at the temperature of 1300-1400 DEG C, and the reduction product is Ti4O7 powder; anhydrous calcium chloride is used as molten salt, graphite is used as an anode, the Ti4O7 obtained throughreduction is used as a cathode, 3.1V direct-current voltage is exerted between the anode and the cathode, electrolysis is conducted for 3 hours in the inert atmosphere of 900 DEG C, and then the metal titanium can be obtained. The metal titanium preparation method combining hydrogen reduction of TiO2 and molten salt electrolysis of Ti4O7 achieves the purpose of electrolysis preparation of the metal titanium within short time, has the advantages of being high in production efficiency, low in energy consumption, environmentally friendly, clean and the like and has the potential to achieve industrialization.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to a hydrogen reduction TiO 2 Combined molten salt electrolysis of Ti 4 o 7 Process for preparing titanium metal. Background technique [0002] As a metal with superior performance, titanium has a series of excellent properties such as high specific strength, good corrosion resistance, and high temperature resistance. It can be widely used in aerospace, nuclear reactors, chemicals, petroleum, metallurgy, and ships. An important strategic resource that is indispensable for enhancing international competitiveness. Titanium is abundant in the earth's crust, ranking fourth among structural metals, second only to aluminum, iron, and magnesium. It can be seen that titanium resources are not scarce, but titanium still has the problem of high cost. This is mainly because the preparation process of titanium is too complicated, and the high production cost has greatly restricted the ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/28
CPCC25C3/28
Inventor 扈玫珑马通祥胡蒙均李朝东
Owner CHONGQING UNIV
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