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Multi-sectional hydrogenation dehydrogenation furnace and manufacturing method of low-oxygen-content titanium powder

A hydrodehydrogenation, multi-stage technology, which is applied in the multi-stage hydrodehydrogenation furnace and the preparation of titanium powder with low oxygen content, can solve the problems of decreased mechanical properties, limited application of titanium powder, poor mechanical properties, etc., and achieves reduction in activation treatment. effect of time

Active Publication Date: 2016-04-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since titanium powder is an important raw material for preparing titanium alloys by powder metallurgy sintering, and the mechanical properties of titanium alloys decrease significantly with the increase of oxygen content, and the oxygen content of powder metallurgy sintered products is generally higher than that of the original powder matrix, so the existing hydrogenation The titanium powder produced by the dehydrogenation method is sintered as a raw material, and the mechanical properties of the product are poor, which seriously limits the application of the titanium powder produced by the hydrogenation dehydrogenation method in the field of powder molding.

Method used

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  • Multi-sectional hydrogenation dehydrogenation furnace and manufacturing method of low-oxygen-content titanium powder
  • Multi-sectional hydrogenation dehydrogenation furnace and manufacturing method of low-oxygen-content titanium powder

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Embodiment 1

[0036] In this embodiment, the structural diagram of the multi-stage hydrodehydrogenation furnace is shown in figure 1 , including a horizontally placed heating furnace 4, a horizontally placed reactor 5, a gas storage tank 6, a cooling device 7 and a mobile support 11,

[0037] The reactor 5 is a cylinder with both ends closed, which is formed by connecting a heating section 5-1, an intermediate section 5-2 and a cooling section 5-3 in sequence, and the length of the heating section is L 1 : Length L of the middle section 2 : Length L of the cooling section 3 =1:4.5:4.5, the end of the cooling section is provided with a material inlet and outlet, the material inlet and outlet is provided with a sealing cover 8, the sealing cover 8 is provided with a gas inlet and outlet, and the cylinder is also provided with a hanging The hook 9 is used to cooperate with an external crane to change the placement posture of the reactor; the cooling device 7 is a water cooling jacket, and th...

Embodiment 2

[0040] In this embodiment, the structural diagram of the multi-stage hydrodehydrogenation furnace is shown in figure 1 , including a horizontally placed heating furnace 4, a horizontally placed reactor 5, a gas storage tank 6, a cooling device 7 and a mobile support 11,

[0041] The reactor 5 is a cylinder with both ends closed, which is formed by connecting a heating section 5-1, an intermediate section 5-2 and a cooling section 5-3 in sequence, and the length of the heating section is L 1 : Length L of the middle section 2 : Length L of the cooling section 3 =2:4:4, the end of the cooling section is provided with a material inlet and outlet, the material inlet and outlet is provided with a sealing cover 8, the sealing cover 8 is provided with a gas inlet and outlet, and the cylinder is also provided with a hanging Hook 9 is used to cooperate with an external crane to change the placement posture of the reactor; the cooling device 7 is composed of a fan and an aluminum cool...

Embodiment 3

[0044] This embodiment provides the preparation method of titanium powder with low oxygen content, the method uses the multi-stage hydrodehydrogenation furnace described in Example 1, and is equipped with a vacuum pump 14 and a storage tank 15 storing high-purity hydrogen, and the vacuum pump and storing high-purity hydrogen The pure hydrogen storage tank is respectively connected with the vacuum joint and the hydrogen source joint of the gas storage tank 6 of the multi-stage hydrodehydrogenation furnace through pipe fittings, and the steps are as follows:

[0045] ① Loading, vacuuming and impurity removal

[0046] The sponge titanium used in this embodiment is grade 0 sponge titanium with a particle size not exceeding 25mm, and the sponge titanium is placed in the heating section 5-1 and the cooling section 5-3 of the reactor respectively, and the cooling section and the heating section The mass ratio of the titanium sponge in the container is 5:1, close the sealing cover 8 a...

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Abstract

The invention provides a multi-sectional hydrogenation dehydrogenation furnace which comprises a heating furnace, a reactor, a gas storage tank, a cooling device and a movable support, wherein the heating furnace and the reactor are horizontally placed. The reactor is a cylinder with two closed ends and formed by sequentially jointing a heating part section, a middle part section and a cooling part section, a material feeding and discharging port is formed in the end of the cooling part section and provided with a sealing cover, and a gas inflow and outflow port is formed in the sealing cover or the cylinder. The cooling device is provided with a first thermoelectric couple. The heating furnace is provided with a second thermoelectric couple. The gas storage tank is provided with a pressure gauge, a reactor joint, a vacuumizing joint and a hydrogen source joint. The reactor is installed on the movable support. The heating part section of the reactor is located in a hearth of the heating furnace. The cooling device is installed on the cooling part section of the reactor. The reactor joint on the gas storage tank is communicated with the gas inflow and outflow port of the reactor through a pipe. The invention further provides a manufacturing method of low-oxygen-content titanium powder. The oxygen content of the titanium powder manufactured through the method does not exceed 0.1wt%.

Description

technical field [0001] The invention belongs to the production field of hydrogenation dehydrogenation process of titanium powder, and relates to a multi-stage hydrogenation dehydrogenation furnace and a preparation method of titanium powder with low oxygen content. Background technique [0002] The preparation methods of titanium powder mainly include hydrogenation dehydrogenation method, plasma rotating electrode method, gas atomization method, etc. Among them, hydrogenation dehydrogenation method has the characteristics of low requirements for raw materials, low production cost and easy realization of large-scale production, etc. The main methods of producing titanium powder at home and abroad. The hydrogenation dehydrogenation method uses sponge titanium as raw material to produce titanium powder, which mainly includes process steps such as feeding-vacuumizing-heating activation-hydrogen absorption-cooling-transfer-grinding-secondary transfer-vacuumize-dehydrogenation. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/30B22F1/00
CPCB22F1/00B22F9/30B22F2201/013
Inventor 陈云贵张冶光肖素芬刘洋
Owner SICHUAN UNIV
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