Vanadium-removing and aluminum-removing reagent used of titanium tetrachloride, preparation method and use method thereof

A technology of titanium tetrachloride and aluminum reagents, applied in the direction of titanium halide, etc., can solve the problems of excessive refined titanium tetrachloride and aluminum, affecting the output rate of titanium tetrachloride refining process, etc., so as to improve the output rate and avoid aluminum The effect of exceeding the standard

Active Publication Date: 2014-11-19
PANGANG GROUP TITANIUM INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, a certain amount of aluminum trichloride is often contained in the crude titanium tetrachloride. If the aluminum in the crude titanium tetrachloride cannot be effectively removed during the refining process of titanium tetrachloride, it will often cause aluminum in the refined titanium tetrachloride product. Aluminum exceeds the standard, which affects the output rate of titanium tetrachloride refining process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of titanium tetrachloride removing vanadium and aluminum removal reagent comprises the following steps:

[0028] a, adding aluminum powder to titanium tetrachloride and mixing to obtain a mixed solution;

[0029] B, feed chlorine gas and air into the mixed solution obtained in step a, stir, and when the temperature of the mixed solution rises to 120° C. to 130° C., stop feeding chlorine gas and air, and cool to obtain the product;

[0030] Wherein, the content of active aluminum in the aluminum powder is ≥85%.

[0031] Because the crude titanium tetrachloride contains more impurities, the presence of impurities will increase the impurity removal load of the titanium tetrachloride refining process when using the reagent of the present invention, so the titanium tetrachloride used in the above method meets the YS / T655-2207 standard of titanium tetrachloride.

[0032] Due to adopting aluminum trichloride, aluminum powder, titanium tetrachloride to ...

Embodiment 1

[0051] Embodiment 1: Add 60kg of the vanadium and aluminum removal reagent obtained in Example 1 for every ton of crude titanium tetrachloride, add the crude titanium tetrachloride and the vanadium and aluminum removal reagent to the still, and control the temperature of the mixed solution in the still to 136°C. After the titanium tetrachloride gas is vaporized, it enters the distillation tower for distillation, and the removal rate of vanadium and aluminum in the titanium tetrachloride liquid obtained by distillation is 99.1% and 70%.

Embodiment 2

[0052] Embodiment 2: Add 80kg of vanadium and aluminum removal reagents obtained in Example 2 for every ton of crude titanium tetrachloride, add the crude titanium tetrachloride and vanadium and aluminum removal reagents to the still, and control the temperature of the mixed solution in the still to 140°C. After the titanium tetrachloride gas is vaporized, it enters the distillation tower for distillation, and the removal rate of vanadium and aluminum in the titanium tetrachloride liquid obtained by distillation is 99.5% and 72%.

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Abstract

The invention belongs to the field of production of titanium tetrachloride and particularly relates to a vanadium-removing and aluminum-removing reagent used of the titanium tetrachloride, a preparation method and a use method thereof. The invention aims to solve a technical problem of providing the reagent which can be used for removing vanadium and aluminum from the titanium tetrachloride. To solve the technical problem, the reagent is composed of following substances, by mass, 6%-10.0% of titanium trichloride, 1%-2% of titanium dichloride oxide, 3.5%-5.0% of aluminium chloride and the balance titanium tetrachloride. In the reagent, the added titanium dichloride oxide can react with aluminium chloride in crude titanium tetrachloride to generate a complex precipitate so that an object of removing vanadium while aluminum is removed at the same time is achieved. Without an aluminum removing process not being introduced, aluminum in the titanium tetrachloride is free from exceeding a standard. A yield rate of a refining process of the titanium tetrachloride is increased.

Description

technical field [0001] The invention belongs to the field of titanium tetrachloride production, and in particular relates to a reagent for removing vanadium and aluminum for titanium tetrachloride and a preparation and use method thereof. Background technique [0002] With the continuous development of the production of sponge titanium and chlorinated titanium dioxide, the market needs a large amount of titanium tetrachloride raw materials, and the crude titanium tetrachloride contains many impurities, which must be refined and removed to obtain refined titanium tetrachloride. Since the boiling point of vanadyl trichloride, the main harmful impurity in titanium tetrachloride, is similar to that of titanium tetrachloride at 135.9°C, and the relative volatility is 1.22, the reflux ratio and theoretical plate required for efficient separation of the two The numbers are large and the energy consumption is too high. Therefore, in industrial production, chemical methods are gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/02
Inventor 黄子良秦兴华李庆文兰杜鑫
Owner PANGANG GROUP TITANIUM INDAL
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