Vanadium-containing mud slurry treatment method

Abstract

The present invention discloses a vanadium-containing mud slurry treatment method, wherein the vanadium-containing mud slurry contains titanium tetrachloride. The vanadium-containing mud slurry treatment method comprises: (1) supplying a vanadium-containing mud slurry into a chlorination furnace from the top portion of the chlorination furnace to make the vanadium-containing mud slurry contact the hot flue gas generated in the chlorination furnace to obtain mixing gas containing gas-state titanium tetrachloride and a vanadium-containing solid; and (2) carrying out gas-solid separation treatment on the mixing gas containing the gas-state titanium tetrachloride and the vanadium-containing solid in a dust collector so as to respectively obtain the titanium tetrachloride and the vanadium-containing solid. With the vanadium-containing mud slurry treatment method of the present invention, the continuous treatment on the vanadium-containing mud slurry can be achieved, and the separation efficiency of the titanium tetrachloride and the vanadium-containing solid in the vanadium-containing mud slurry is high so as to completely recover the titanium tetrachloride.

Description

technical field [0001] The invention belongs to the technical field of producing titanium dioxide by chlorination, in particular, the invention relates to a method for treating vanadium-containing mud. Background technique [0002] The production process of rutile titanium dioxide by boiling chlorination mainly includes chlorination, condensation of crude titanium tetrachloride, refining of crude titanium tetrachloride, oxidation, and post-treatment of base materials. Crude titanium tetrachloride is continuously processed with mineral oil. During the vanadium removal process, 7-10 tons of vanadium-containing mud with a solid content of about 15wt% must be discharged every hour to ensure continuous and stable operation of the process. If there is no mature technology to deal with the discharged mud in time, it will seriously hinder production. For the existing mud evaporation process, the treatment of mud not only requires new processing equipment, but also needs to provide a...

AI Technical Summary

Problems solved by technology

[0002] The production process of rutile titanium dioxide by boiling chlorination mainly includes chlorination, condensation of crude titanium tetrachloride, refining of crude titanium tetrachloride, oxidation, and post-treatment of base materials. Crude titanium tetrachloride is continuously processed with mineral oil. During the vanadium removal process, 7-10 tons of vanadium-containing mud with a solid content of about 15wt% must be discharged every hour to ensure continuous and stable operation of the process. If there is no mature technology to deal with the discharged mud in time, it will seriously hinder production. For the existing mud evaporation process, the treatment of mud not only requires new processing equipment, but also needs to provide additional heat energy, which greatly increases the operating cost, and at the same time cannot completely realize the removal of titanium tetrachloride and vanadium. Thorough separation of mud

[0003] Therefore, the technology for treating vanadium-containing mud in the existing titanium tetrachloride production process needs to be further improved

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