Method for preparing carbon-doped titanium oxide or/and titanium carbide from titanium-containing mineral or slag

A technology for titanium oxycarbide and titanium minerals, which is applied in the field of preparing titanium oxycarbide or/and titanium carbide, can solve the problems of high preparation temperature, high cost, low production efficiency, etc. in the production process, so as to speed up the production reaction rate and save energy consumption. Cost, fast response effect

Inactive Publication Date: 2017-01-11
CHONGQING UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0008] For the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a kind of method that utilizes titanium-containing mineral or slag to prepare titanium oxycarbide or / and titanium carbide, provide a kind of new method for the preparation of titanium oxycarbide and titanium carbide , to 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

Method used

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  • Method for preparing carbon-doped titanium oxide or/and titanium carbide from titanium-containing mineral or slag
  • Method for preparing carbon-doped titanium oxide or/and titanium carbide from titanium-containing mineral or slag
  • Method for preparing carbon-doped titanium oxide or/and titanium carbide from titanium-containing mineral or slag

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example 1

[0063] This embodiment uses TiO 2 To prepare titanium oxycarbide or / and titanium carbide with 81% high titanium slag, the specific steps are as follows:

[0064] (1) TiO 2 The 81% high-titanium slag is crushed into powder and sieved. It is required that particles with a particle size of less than 140 mesh in the powdered titanium-containing material obtained by sieving account for more than 80% of the total weight of the powdered titanium-containing material.

[0065] (2) It is determined by composition analysis that the mass percentage of iron contained in the titanium-containing powder obtained by sieving in this example is 6.0% (more than 5%), so there is no need to add iron powder or Fe 2 O 3 Powder, directly use powdered titanium-containing material as raw material for titanium-containing reaction.

[0066] (3) Put the obtained titanium-containing powder material into a crucible, then put it into a fixed bed, and continuously pass a mixture of methane:hydrogen:argon at 6%:40%:54%...

example 2

[0071] This embodiment uses TiO 2 To prepare titanium oxycarbide or / and titanium carbide with a content of 45% ilmenite, the specific steps are as follows:

[0072] (1) TiO 2 The content of 45% ilmenite is crushed into powder and sieved. It is required that particles with a particle size of less than 140 mesh in the powdered titanium-containing material obtained by sieving account for more than 80% of the total weight of the powdered titanium-containing material.

[0073] (2) It is determined by composition analysis that the mass percentage of iron contained in the powder titanium-containing material obtained by sieving in this embodiment is 35.8% (greater than 5%), so there is no need to add iron powder or Fe 2 O 3 Powder, directly use powdered titanium-containing material as raw material for titanium-containing reaction.

[0074] (3) Put the obtained titanium-containing reaction raw material into a MgO crucible, and then put it into a fluidized bed to pass a mixture of methane:hydro...

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Abstract

The invention provides a method for preparing carbon-doped titanium oxide or / and titanium carbide from titanium-containing mineral or slag. According to the method, the cheap titanium-containing mineral or slag is adopted as a donor of the titanium element, and hydrogen and methane are selected to serve as a reducing agent and a carbonization agent respectively, so that raw material cost is saved; moreover, the processing only needs to reach the low temperature of 1,200-1,400 DEG C, meanwhile, reforming of methane is realized in the process of preparing carbon-doped titanium oxide or / and titanium carbide, hydrogen and carbon black are obtained through methane splitting, hydrogen and the titanium-containing material are subjected to a gas-solid reduction reaction, and reduction efficiency is high; meanwhile, the carbon black obtained through splitting greatly improves carbonization efficiency, carbonization temperature is low, the carbonization rate is high, energy consumption cost is saved, therefore, production cost is lowered, the production reaction rate is increased, the recovery rate of the titanium element in the raw material is raised, and the problems that in an existing carbon-doped titanium oxide and titanium carbide production process, preparation temperature is high, production efficiency is low, and cost is high are well solved.

Description

Technical field [0001] The invention relates to the technical field of metallurgy and chemical engineering, in particular to design a method for preparing titanium oxycarbide or / and titanium carbide by using titanium-containing minerals or slag. Background technique [0002] In the past few decades, metallurgists from all over the world have devoted themselves to the development of new low-cost titanium smelting processes. In particular, the electrolytic method of extracting titanium using molten salt as the medium has developed rapidly, and has quickly become a new low-cost titanium extraction process. The development direction of the craft. Jiao Shuqiang et al. (SQJiao, HMZhu; Journal of Alloys and Compounds; 2007, 438; 243~246 pages) developed a new carbothermic reduction-molten salt electrolysis extraction of titanium process (USTB process), and proposed a new type of solubility Electrolytic anode material titanium oxycarbide (TiC x O y , X+y=1). The process flow is: in a v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/907C01B32/921C01B32/40C01B3/50
CPCC01B3/50C01P2002/72C01P2004/03
Inventor 党杰汪金生吕学伟白晨光扈玫珑周国治
Owner CHONGQING UNIV
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