Recovery method and equipment of vanadium-containing slurry produced from titanic chloride refining process

Abstract

The invention provides a method for recovering vanadium contained slurry produced in the refining process of titanium tetrachloride and equipment thereof, wherein the method comprises: treating the vanadium contained slurry, converting the vanadium oxytrichloride in the vanadium contained slurry into vanadyl dichloride, and spraying the vanadium contained slurry to a chlorination system under the condition of controlling the temperature of the spraying point between 150 and 190 DEG C. The applied equipment comprises a chlorination furnace (1), a primary gravity dust precipitator (2) and a secondary gravity dust precipitator (3); the top of the secondary gravity dust precipitator (3) is provided with a vanadium contained slurry storage groove (4) which is connected with a single-screw pump (5), the single-screw pump (5) is connected with an atomizing device (6) and the atomizing device (6) is positioned inside the secondary gravity dust precipitator (3). Compared with the prior art, the method can effectively separate and recover the titanium tetrachloride in the vanadium contained slurry, thus reducing pollution, simplifying production process and saving production cost.

Description

technical field [0001] The invention relates to a method and equipment for recycling mud produced in the production of titanium tetrachloride, in particular to a method and equipment for treating and recycling vanadium-containing mud produced in the refining process of titanium tetrachloride. Background technique [0002] In the process of chlorination of titanium-rich materials to produce titanium tetrachloride, the temperature of the gas discharged from the chlorination furnace is generally 600-850 ° C. In addition to titanium tetrachloride, the discharged gas also contains other chlorides and solid impurities, such as trichloride. Ferric chloride, aluminum trichloride, calcium chloride, magnesium chloride, titanium oxide, carbon, etc., need to be cooled to 160-180°C by a condensing dust collector before entering the elution tower, and then enter the elution tower for leaching and collection. Titanium tetrachloride is produced, and crude titanium tetrachloride is obtained ...

AI Technical Summary

Problems solved by technology

The water flushing method of vanadium-containing mud consumes a large amount of energy and produces a large amount of Cl-containing - waste water, environmental pollution

Publication No. is that the Chinese patent of CN1415547 discloses a kind of vanadium-containing titanium tetrachloride mud treatment method and equipment, and it is to spray vanadium-containing mud into the first-stage gravity dust collector, but the temperature of the first-stage gravity dust collector Generally at 450-650°C, at this temperature, the solid vanadium oxychloride will be chlorinated again to form vanadium oxychloride, which will enter into titanium tetrachloride after cooling and washing with titanium tetrachloride gas, so that the vanadium content in the system Enrichment, failing to achieve the purpose of vanadium and titanium separation

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