A kind of method of titanium tetrachloride settling mud synthetical recovery iron trichloride

A kind of method of titanium tetrachloride settling mud synthetical recovery iron trichloride

  • CN 103,570,080 B
  • Filed: 11/08/2013
  • Issued: 08/05/2015
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. a method for titanium tetrachloride settling mud synthetical recovery iron trichloride, comprises the steps:

  • The first step;

    remove in titanium tetrachloride settling mud containing aluminium chlorine compoundIn crude titanic chloride precipitation mud, add the solid aluminium of ferric oxide, make the aluminium chlorine compound that contains wherein change into aluminum oxide, obtain solid aluminium titanium tetrachloride settling mud;

    Second step;

    Separation and Recovery TiCl 4Solid aluminium titanium tetrachloride settling mud is completely cut off air heating evaporation TiCl wherein 4, collection steam, condensation obtain titanium tetrachloride, and evaporation residue is for subsequent use;

    Or Organic solvent (1) leaching TiCl wherein will added except aluminium titanium tetrachloride settling mud 4, filter containing TiCl 4solution and leach residue, containing TiCl 4solution again through distilling to obtain organic solvent (1) and TiCl 4;

    3rd step;

    comprehensively recovering Fe Cl 3The evaporation residue that second step is obtained or leach residue heating evaporation FeCl wherein 3, produce iron trichloride;

    Or Organic solvent (2) is added, Selectively leaching FeCl wherein in the evaporation residue obtained at second step or leach residue 3, filter containing FeCl 3filtrate, containing FeCl 3filtrate again through distilling to obtain organic solvent (2) and iron trichloride.

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