KR101254971B1 - Method for preparing titanium powder with excellent productability and apparatus for preparing the titanium powder - Google Patents
Method for preparing titanium powder with excellent productability and apparatus for preparing the titanium powder Download PDFInfo
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- KR101254971B1 KR101254971B1 KR1020100135345A KR20100135345A KR101254971B1 KR 101254971 B1 KR101254971 B1 KR 101254971B1 KR 1020100135345 A KR1020100135345 A KR 1020100135345A KR 20100135345 A KR20100135345 A KR 20100135345A KR 101254971 B1 KR101254971 B1 KR 101254971B1
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- titanium
- reducing agent
- titanium powder
- reaction chamber
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Abstract
The present invention relates to a method and apparatus for producing a titanium powder, and more specifically, to a titanium powder by reducing a liquid reducing agent injected into a reaction chamber and titanium tetrachloride in a gas phase to obtain a titanium powder, and to collect and transport the obtained titanium powder. It recovers the titanium powder by transporting by a stream, and additionally injects titanium tetrachloride into the transport stream to react with the unreacted reducing agent in the reduction reaction, furthermore, a liquid reducing agent A reaction chamber in which titanium tetrachloride is injected into the gas phase and the titanium tetrachloride is reduced with the reducing agent to produce titanium powder; And a transfer tube positioned below the reaction chamber, the reaction product including titanium powder by the reduction reaction being collected, and a transfer stream configured to transfer the collected reaction product. The transfer tube includes titanium tetrachloride. It provides a titanium powder manufacturing apparatus, characterized in that the gas injection pipe is formed is injected gas.
Description
The present invention relates to a method for producing titanium powder and a titanium powder production apparatus suitable for the method.
More specifically, the present invention relates to a method and apparatus for improving the productivity of the titanium powder produced by the reaction of a reducing agent and titanium tetrachloride in the reaction chamber in the production of fine titanium powder and for smooth transfer of the titanium powder.
Titanium or a titanium alloy has a high melting point, high strength, high toughness, low density, and excellent corrosion resistance. Therefore, titanium or titanium alloy is widely used as a material for various components such as aircraft and chemical industry equipment.
However, the manufacture of various parts of titanium or titanium alloys by precision casting is not easy due to the high melting point (1668 ° C.) of titanium or titanium alloys, resulting in high manufacturing costs. Therefore, in order to manufacture components made of titanium at a lower cost, a powder metallurgy method is required in which titanium powder is prepared, the titanium powder is pressed to be molded into a predetermined shape, and the molded article thus obtained can be sintered.
In addition, a component made of a titanium alloy could be produced by mixing titanium powder with a metal powder to be alloyed, pressing the obtained mixed powder to form a predetermined shape, and then sintering the obtained molded product.
As described above, it is necessary to use titanium powder as the raw material for the production of various parts of titanium or titanium alloy by powder metallurgy. Such titanium powder has been manufactured by the following method using a reducing device as shown in FIG. 1.
That is, while supplying the liquid titanium tetrachloride to the
TiCl 4 (g) + 2Mg (l) = Ti (s) + 2MgCl 2 (l) (1)
TiCl 4 (g) + 4Na (l) = Ti (s) + 4NaCl (l) (2)
The titanium powder and the reaction by-products generated by the reaction are dropped to the bottom of the
At this time, the reducing agent is injected in excess of 30-50% of the theoretically required amount in order to increase the reduction probability of titanium tetrachloride. Therefore, the reaction product falling into the
However, the excess unreacted reducing agent is accumulated in the
The present invention seeks to smooth the flow of the transport stream by inhibiting or reducing the accumulation of excess reducing agent in the transport pipe. For this reason, it is intended to increase the yield of obtaining titanium powder and to improve productivity.
Accordingly, the present invention is to provide a method for producing titanium powder in which the unreacted reducing agent in the transfer pipe may additionally participate in the reduction reaction.
Furthermore, the present invention provides a device in which an unreacted reducing agent can additionally cause a reduction reaction in such a delivery pipe.
The present invention relates to a method for producing a titanium powder, by reducing the liquid reducing agent injected into the reaction chamber and titanium tetrachloride in the gas phase to obtain a titanium powder, by collecting the obtained titanium powder and transported by a transport stream titanium powder Recovering, and further injecting titanium tetrachloride into the transport stream provides a method for producing titanium powder, characterized in that for reacting with the unreacted reducing agent in the reduction reaction.
In the titanium powder manufacturing method of the present invention, the reducing agent is preferably magnesium or sodium, and titanium tetrachloride injected into the transport stream is preferably injected with an inert gas.
The present invention also relates to a titanium powder production apparatus, comprising: a reaction chamber in which a liquid reducing agent and titanium tetrachloride in a gas phase are injected, and the titanium tetrachloride is reduced with the reducing agent to generate titanium powder; And a transfer tube positioned below the reaction chamber, the reaction product including titanium powder by the reduction reaction being collected, and a transfer stream configured to transfer the collected reaction product. The transfer tube includes titanium tetrachloride. It provides a titanium powder manufacturing apparatus, characterized in that the gas injection pipe is formed is injected gas.
In the titanium powder production apparatus of the present invention, the reducing agent is preferably magnesium or sodium.
In addition, the transfer pipe is preferably provided with a heating element for maintaining the unreacted reducing agent remaining in the liquid phase after the reduction reaction, more preferably the heating element may be a heating coil.
Further, the gas injection pipe may be injected with an inert gas together with titanium tetrachloride gas.
According to the present invention, it is possible to suppress the flow of the transport stream by stacking the reducing agent introduced in excess for the reduction of titanium tetrachloride in the further reduction reaction by accumulating in the transport pipe under the reaction chamber. For this reason, a titanium recovery rate can be improved.
Furthermore, by additionally injecting titanium tetrachloride into the delivery pipe, an additional reduction reaction may be generated with an unreacted reducing agent, thereby further producing titanium powder, thereby improving productivity of the titanium powder.
1 is a view schematically showing a conventional titanium powder production apparatus.
2 is a view schematically showing an example of a titanium powder production apparatus according to the present invention, which has a
The present invention relates to a method and apparatus for producing sponge titanium, hereinafter, the present invention will be described in detail with reference to the drawings.
2 is a view showing an example of the titanium
In general, the reducing
The reducing
In the present invention, magnesium or sodium can be used as the reducing agent. In this case, since magnesium has a melting temperature of 650 ° C. and sodium of 97.72 ° C., when magnesium is used as a reducing agent, it should be maintained above the respective temperatures.
The reducing
The reducing agent in the liquid phase injected from the upper portion of the
The titanium tetrachloride is present in the liquid phase at room temperature, the evaporation temperature is 136.4 ℃, it is usually supplied in the liquid phase. However, in the process of being supplied into the
The reducing agent and titanium tetrachloride injected into the
Specifically, when the reducing agent is magnesium, the melting temperature of the magnesium is 650 ℃, higher than the temperature of titanium tetrachloride, so that the
As described above, titanium powder, sodium chloride or magnesium chloride (hereinafter also referred to as 'chloride') is produced by the reduction reaction in the
The
However, since the
The reason for this is that the reducing agent solidifies as it falls into the conveying
Accordingly, by additionally injecting titanium tetrachloride gas into the
The titanium tetrachloride further injected into the
The conveying stream is a mechanism operated by a mechanical force, for example, can also be formed by the operation of the screw, and by periodically pumping the conveying pipe to form a conveying stream in the conveying pipe, titanium powder in the conveying pipe, reaction By-products and unreacted reducing agents can be transferred.
On the other hand, since the
As such, by installing the
On the other hand, the reaction of the titanium tetrachloride and the reducing agent is accompanied by an exotherm, the temperature in the transfer tube may exceed a predetermined temperature to be controlled by the reduction reaction caused by injecting titanium tetrachloride into the transfer tube. Therefore, in order to keep the temperature around the transfer pipe constant, a cooling device such as an air cooling device such as a water cooling device or a blower provided with a coil capable of flowing cooling water can be provided.
The titanium powder thus obtained, the chloride by-product and the remaining reducing agent are transferred to a separate collecting device by a transfer stream, and the titanium powder of high purity is removed by a known method such as removing the chloride and the reducing agent with a solvent therefrom. Can be obtained.
1: reducing device 11: reducing agent storage container
12: reducing agent storage heating element 13: reducing agent injection nozzle
21: reaction chamber 22: reactor heating element
23: titanium tetrachloride injection pipe 24: titanium tetrachloride injection nozzle
31: transfer pipe 32: transfer pipe heating element
33: gas injection pipe
Claims (8)
And adding titanium tetrachloride together with an inert gas into the transport stream to react with an unreacted reducing agent in the reduction reaction.
A transfer tube disposed below the reaction chamber, the reaction product including titanium powder by the reduction reaction being collected, and a transfer stream configured to transfer the collected reaction product;
A heating element positioned on an outer surface of the transfer pipe and configured to maintain an unreacted reducing agent remaining in the liquid phase after the reduction reaction; And
Located on the upper stream of the transfer pipe connected to the lower portion of the reaction chamber, titanium powder manufacturing apparatus comprising a gas injection pipe is injected titanium titanium gas with an inert gas.
Priority Applications (1)
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KR1020100135345A KR101254971B1 (en) | 2010-12-27 | 2010-12-27 | Method for preparing titanium powder with excellent productability and apparatus for preparing the titanium powder |
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KR1020100135345A KR101254971B1 (en) | 2010-12-27 | 2010-12-27 | Method for preparing titanium powder with excellent productability and apparatus for preparing the titanium powder |
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KR20120073546A KR20120073546A (en) | 2012-07-05 |
KR101254971B1 true KR101254971B1 (en) | 2013-04-17 |
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Families Citing this family (4)
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KR20130076269A (en) * | 2011-12-28 | 2013-07-08 | 재단법인 포항산업과학연구원 | Method for preparing sponge metal and apparatus for preparing sponge metal |
CN107350485B (en) * | 2017-06-19 | 2019-08-02 | 西安建筑科技大学 | A kind of gas phase reaction preparation method of V-Ti-Fe hydrogen storing alloy powder |
CN108356280B (en) * | 2018-03-13 | 2021-07-16 | 昆明理工大学 | Method for preparing spherical nano titanium powder |
KR102260400B1 (en) * | 2019-12-27 | 2021-06-03 | 고등기술연구원연구조합 | MANUFACTURING METHOD OF Ti POWDER AND MANUFACTURING APPARATUS THEREOF |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6415334A (en) * | 1987-07-09 | 1989-01-19 | Toho Titanium Co Ltd | Production of metal from metal halide |
JPH02311316A (en) * | 1989-05-24 | 1990-12-26 | N K R:Kk | Production of titanium powder or titanium composite powder |
JPH0559413A (en) * | 1991-08-30 | 1993-03-09 | Showa Denko Kk | Production of metal |
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2010
- 2010-12-27 KR KR1020100135345A patent/KR101254971B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6415334A (en) * | 1987-07-09 | 1989-01-19 | Toho Titanium Co Ltd | Production of metal from metal halide |
JPH02311316A (en) * | 1989-05-24 | 1990-12-26 | N K R:Kk | Production of titanium powder or titanium composite powder |
JPH0559413A (en) * | 1991-08-30 | 1993-03-09 | Showa Denko Kk | Production of metal |
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