Method for preparing TiCxOy and/or TiC through carbon-added hydrogen reduction

A technology of titanium carbide and titanium carbide, which is applied in the field of preparation of titanium carbide or/and titanium carbide by the reduction of carbon and hydrogen, can solve the problems of low production efficiency, high preparation temperature of production process, high cost, etc., so as to improve efficiency and increase Reduction, energy cost saving effect

Active Publication Date: 2017-05-31
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for preparing titanium oxycarbide or / and titanium carbide by reduction with carbon and hydrogen, and provide a new method for the preparation of titanium oxycarbide and titanium carbide. Solve a series of problems such as high preparation temperature, low production efficiency and high cost in the existing production process of titanium carbide and titanium carbide

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  • Method for preparing TiCxOy and/or TiC through carbon-added hydrogen reduction
  • Method for preparing TiCxOy and/or TiC through carbon-added hydrogen reduction
  • Method for preparing TiCxOy and/or TiC through carbon-added hydrogen reduction

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example 1

[0056] This embodiment adopts TiO 2 The rutile with a content of 96% is used as titanium dioxide raw material powder to prepare titanium carbide or / and titanium carbide. The specific steps are as follows:

[0057] (1) TiO 2 The rutile powder with a content of 96% is sieved to obtain a sufficient amount of titanium dioxide powder, and the particle size of the sieved titanium dioxide powder is required to be 48 mesh to 200 mesh.

[0058] (2) Add an appropriate amount of carbon powder to the obtained titanium dioxide powder, so that the molar ratio of carbon powder to titanium dioxide powder is 1.7:1, and add a certain amount of iron powder at the same time. The amount of iron powder added is the carbon powder and titanium dioxide powder. 8.2% of the total weight, the titanium-containing material is mixed as the titanium-containing reaction material.

[0059] (3) Put the obtained titanium-containing reaction raw materials into an MgO crucible, then put them into a tube furnace,...

example 2

[0064] This embodiment adopts TiO 2 Titanium dioxide powder with a content of 99% is used as titanium dioxide raw material powder to prepare titanium carbide or / and titanium carbide. The specific steps are as follows:

[0065] (1) TiO 2 The titanium dioxide powder with a content of 99% is screened to obtain a sufficient amount of titanium dioxide powder, and the particle size of the titanium dioxide powder obtained by screening is required to be 48 mesh to 200 mesh.

[0066] (2) Add an appropriate amount of carbon powder to the obtained titanium dioxide powder, so that the molar ratio of carbon powder to titanium dioxide powder is 3:1, and add a certain amount of iron powder at the same time. The amount of iron powder added is the carbon powder and titanium dioxide powder. 8.2% of the total weight, the titanium-containing material is mixed as the titanium-containing reaction material.

[0067] (3) Put the obtained titanium-containing reaction raw materials into an MgO crucible...

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Abstract

The invention provides a method for preparing TiCxOy and/or TiC through carbon-added hydrogen reduction. According to the method, pure titanium dioxide or rutile is used as an initial material, hydrogen and carbon powder are used as a reducing agent and a carburizing agent, the other role of the carbon powder is to reduce oxygen partial pressure, the preparation temperature is only required to be as low as 1,200-1,350 DEG C, hydrogen and a titanium-containing raw material are subjected to a gas-solid reduction reaction in a TiCxOy and/or TiC preparation process, the reduction efficiency is high, the reduction speed is high, the carbon powder fully and uniformly mixed with the raw material and vapor produced after hydrogen reduction are subjected to a water-gas reaction, the oxygen partial pressure in a material layer is reduced, a titanium oxide reduction is promoted, the uniformly mixed carbon powder greatly improves the carbonization efficiency, the carbonization rate is high, the reduction of TiC oxide at the lower temperature is realized, energy consumption cost is saved, and the problems of high preparation temperature, low production efficiency, high cost and the like in existing TiCxOy and TiC production technologies are well solved.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, and in particular designs a method for preparing titanium oxycarbide or / and titanium carbide by reduction with carbon and hydrogen. Background technique [0002] Titanium carbide is a material with high melting point, high hardness and good chemical stability. It is usually used to manufacture cermets, heat-resistant alloys and hard alloys in industrial production. These products are used in aerospace, coating High-tech fields such as layer materials have a very wide range of applications (see "Liu Yang, Zeng Lingke; Chinese Ceramics, 2002, 38; pp. 7-10"). [0003] At present, there are many ways to synthesize titanium carbide at home and abroad, and the carbothermal reduction method is mainly used in industry. The literature "R. Koc, J.S. Folmer. Journal of Materials Science, 1997, 32: 3101-3111" and the literature "K Thorne, S J Ting. Journal of Materials Science, 1992...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/907C01B32/921
CPCC01P2002/72
Inventor 党杰汪金生扈玫珑吕学伟张生富徐健白晨光周国治
Owner CHONGQING UNIV
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