Vanadium trioxide production method

A technology of vanadium trioxide and production method, applied in vanadium oxide and other directions, can solve the problems of complex production process, high production cost, low safety factor, etc., and achieve the effects of strong operability, low manufacturing cost and high safety factor

Inactive Publication Date: 2011-05-11
CITIC JINZHOU METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the required amount of industrial gas is large and the production process is complicated
[0006] In summary, the reducing agent used in the heating process of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add the ammonium polyvanadate external reducing agent-graphite powder with a particle size of 0.01-5mm into the heating furnace made of nickel alloy, and the graphite powder is mixed around the ammonium polyvanadate, such as figure 1 shown. The weight ratio of ammonium polyvanadate to graphite powder is 10:4, the heating temperature is 800°C, and the reduction time is 5 hours, so that the material undergoes a reduction reaction in the heating furnace to form vanadium trioxide, and the material is naturally cooled under airtight conditions Bring to room temperature and bake. The obtained vanadium trioxide product ∑V67.39%, the recovery rate of vanadium is 99.3%.

Embodiment 2

[0025] Add the ammonium polyvanadate external reducing agent graphite powder with a particle size of 0.01 to 5mm into the heating furnace made of nickel alloy, and the graphite powder is mixed around the ammonium polyvanadate, such as figure 1 shown. The weight ratio of ammonium polyvanadate to graphite powder is 100:1, the heating temperature is 1150°C, and the reduction time is 1h, so that the material undergoes a reduction reaction in the heating furnace to form vanadium trioxide, and the material is cooled under the protection of an inert gas Bring to room temperature and bake. The obtained vanadium trioxide product ΣV67.03%, the recovery rate of vanadium is 99.1%.

Embodiment 3

[0027] Ammonium polyvanadate with a particle size of 0.01-5mm is externally mixed with a reducing agent-coke, and coke is mixed around the ammonium polyvanadate, such as figure 1 As shown, the weight ratio of ammonium polyvanadate to coke is 4:1, and it is added into a heating furnace made of nickel alloy. The heating temperature is 1000°C, and the reduction time is 1h, so that the material undergoes a reduction reaction in the heating furnace. Vanadium trioxide is generated, and the material is cooled to room temperature under the protection of an inert gas. The obtained vanadium trioxide product ∑V67.58%, the recovery rate of vanadium is 99.6%.

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Abstract

The invention discloses a vanadium trioxide production method. In the method, ammonium polyvanadate or vanadium pentoxide of which the particle size is 0.01 to 5 millimeters and solid carbon are added into a heating furnace according to a weight ratio ranging from 100:40 to 100:1, the heating temperature is 800 to 1,150 DEG C, the reduction time is 1 to 5 hours, the materials are reduced in the heating furnace to form vanadium trioxide, and the materials are cooled under a closed condition to room temperature and discharged. The vanadium trioxide production method has the advantage that compared with preparation of vanadium trioxide by using a gas reducer and a dynamic process, the preparation of vanadium trioxide by using a solid reducer and a static reducing method reduces manufacturing cost, simplifies process, improves operability, has a high safety coefficient, eliminates a gas leakage risk, can obtain high-quality vanadium trioxide product of which the all vanadium grade reaches over 67 percent and can realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of low-valent vanadium oxides, in particular to a production method of vanadium trioxide. Background technique [0002] Vanadium trioxide and vanadium pentoxide, vanadium carbide, vanadium nitride, vanadium carbonitride, ammonium vanadate, sodium vanadate, etc. are important compounds of vanadium, which can be used in metallurgy, electronics, chemical industry and other industries. [0003] Vanadium trioxide can replace vanadium pentoxide to prepare ferrovanadium, and vanadium trioxide can be made into vanadium carbide or vanadium nitride and directly added to molten steel to improve the mechanical properties of steel. Vanadium trioxide can also be used to prepare metal vanadium powder. In addition, vanadium trioxide can also be directly used in the production of electronic products such as heating elements. [0004] JP84 / 61141622 discloses a method for preparing vanadium trioxide by reducin...

Claims

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Application Information

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IPC IPC(8): C01G31/02
Inventor 齐牧崔传海明宪权吴晓丹刘飞吴文鹏徐飙韩艳芝赵伟陈涛
Owner CITIC JINZHOU METAL
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