Method and system for recycling vanadium-containing mud generated in vanadium removal process of crude titanium tetrachloride

A technology of crude titanium tetrachloride and recovery method, which is applied in the field of recovery of valuable elements Ti and V, can solve the problems of inability to recover valuable elements vanadium, increase the production cost of sponge titanium, occupy land resources, etc., and achieve simple production equipment, The effect of high product purity and high yield

Active Publication Date: 2015-04-15
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

Currently, for crude TiCl 4 The vanadium-containing mud produced during the vanadium-removing refining process of aluminum powder is mainly made of insoluble lime cake by adding lime and piled up in the slag yard. In this way, the refined vanadium-containing mud can not only recover the valuable element vanadium, but also takes up a lot of Land resources, resulting in environmental degradation, indirectly increased the production cost of sponge titanium

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  • Method and system for recycling vanadium-containing mud generated in vanadium removal process of crude titanium tetrachloride

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Embodiment Construction

[0023] Hereinafter, the method and system for recovering the vanadium-containing mud produced by removing vanadium from crude titanium tetrachloride according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0024] figure 1 It is a schematic diagram of a recovery system of vanadium-containing mud produced by removing vanadium from crude titanium tetrachloride according to an exemplary embodiment of the present invention. Such as figure 1 As shown, the recovery system includes molten salt furnace 1, gas supply pipe 5, TiCl 4 Gas collection unit 6, condenser 7 and VOCl 3 Product storage unit 8 .

[0025] Among them, molten salt furnace 1 can make crude TiCl 4 Heating to 600-750°C, it includes a furnace body with an inner cavity, a vanadium-containing mud inlet arranged on the furnace body, an exhaust port arranged on the top of the furnace body, and molten salt 2 contained in the inner cavity (Also...

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Abstract

The invention provides a method and a system for recycling vanadium-containing mud generated in a vanadium removal process of crude titanium tetrachloride. The vanadium-containing mud contains titanium tetrachloride liquid and VOCl2 solid. The method comprises the steps of adding the vanadium-containing mud into a molten salt furnace, evaporating, and collecting titanium tetrachloride in the vanadium-containing mud; introducing chlorine into the vanadium-containing mud to ensure that chlorine is reacted with VOCl2 in the vanadium-containing mud, and obtaining mixed gas containing VOCl3 gas and chlorine; condensing the mixed gas to obtain VOCl3 liquid and chlorine, wherein molten salt is filled in the molten salt furnace, and the temperature of the molten salt furnace is kept at 600-750 DEG C. The recycling system is used for implementing the method, and comprises the molten salt furnace, an air supply pipe, a TiCl4 gas collecting unit and a condenser. The recycling method and recycling system, provided by the invention, are used for realizing one-time recovery of valuable elements namely titanium and vanadium in the vanadium-containing mud, and are high in yield of vanadium and titanium, and high in purity of obtained products.

Description

technical field [0001] The invention relates to the technical field of metallurgy and environmental protection, more specifically, relates to a 4 A method for recovering valuable elements Ti and V from the vanadium-containing mud generated during the vanadium-removing refining process of aluminum powder. Background technique [0002] Titanium tetrachloride (TiCl 4 ) is an indispensable raw material for the production of sponge titanium and chloride titanium dioxide. Because there are many harmful impurities (such as vanadium) in the crude titanium tetrachloride produced by reduction smelting and chlorination of titanium-containing raw materials (for example, ilmenite), these impurities directly affect the quality of sponge titanium. Therefore, the crude titanium tetrachloride must be Titanium tetrachloride can only be used to produce sponge titanium and titanium dioxide after purification. Since the vanadium impurity in crude titanium tetrachloride is mainly composed of v...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/02C01G31/04
Inventor 杜明李良陆平黄子良杨仰军刘森林李冬勤
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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