Titanium containing slurry titanium tetrachloride recycling system and recycling method

Abstract

The invention discloses a titanium containing slurry titanium tetrachloride recycling system, and a recycling method. The titanium containing slurry titanium tetrachloride recycling system comprises acharging assembly, a high position tank, a molten salt chlorination furnace, and a dust collecting chamber; the charging assembly is communicated with the high position tank; the dust collecting chamber is communicated with the molten salt chlorination furnace; the high position tank is arranged above the dust collecting chamber, and is communicated with the dust collecting chamber. The titaniumcontaining slurry titanium tetrachloride recycling system is used for extracting residual high solid impurity content titanium containing slurry from equipment used for producing titanium tetrachloride, stirring the titanium containing slurry, conveying the titanium containing slurry into the molten salt chlorination furnace, generating titanium tetrachloride high temperature smoke with waste heat, realizing waste residue separation and collection, realizing stable and high efficiency recycling of titanium tetrachloride from the titanium containing slurry, and avoiding enrichment of impuritiesin the slurry in subsequent dust collecting condensation system at the same time. Flexible selection of a recycling back to the dust collecting chamber mode or an intermittent type recycling to the dust collecting chamber mode is realized, flexible matching with the temperature in the dust collecting chamber is realized through controlling on slurry spraying flow amount, so that titanium tetrachloride recycling rate and efficiency can be increased effectively.

Description

technical field [0001] The invention relates to the technical field of titanium metallurgy and titanium chemical industry, in particular to a titanium tetrachloride recovery system and recovery method for titanium-containing mud. Background technique [0002] TiCl 4 (Titanium tetrachloride) is an important intermediate raw material for the production of titanium metal and titanium dioxide. At present, the industrial production of TiCl 4 The mainstream method is the boiling chlorination method, and the boiling chlorination method has higher requirements on raw materials (TiO in raw materials 2 content ≥ 92%, the total content of CaO and MgO ≤ 1.5%), if low-grade titanium slag is used as raw material, it is very easy to produce high-viscosity, non-volatile CaCl in the chlorination process 2 and MgCl 2 Compounds, which will cause problems such as agglomeration of charge, blockage of sieve plates, and destruction of reaction beds, which will eventually affect the normal opera...

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Problems solved by technology

None of the above patents has the capability of continuous treatment and recovery of TiCl from mud 4 technical effect, and the raw materials used are not suitable for crude TiCl 4 Titanium-containing mud with high solid content impurities such as the bottom mud of the settlement tank after hydrolysis and sedimentation, or the still residue after rectification to remove silicon and aluminum, cannot solve the problem of the traditional process of pulp evaporation. The problems of low production efficiency, high production energy consumption and large environmental pollution

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