Method for preparing titanium white by using acid waste water and pretreated titanium ore

Method for preparing titanium white by using acid waste water and pretreated titanium ore

  • CN 101,805,018 A
  • Filed: 12/30/2009
  • Published: 08/18/2010
  • Est. Priority Date: 12/30/2009
  • Status: Active Application
First Claim
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1. the method for a preparing titanium white by using acid waste water and pretreated titanium ore, its processing step comprises levigate titanium ore, acidolysis, titanium liquid condensing crystal, titanium hydrolysis, the filtration of metatitanic acid, washing, the calcining of metatitanic acid, the aftertreatment of titanium dioxide, it is characterized in that also have removal of impurities pre-treatment and solid-liquid separation process between levigate titanium ore and hydrolysis procedure:

  • the levigated titanium ore is carried out pre-treatment with the acid waste water that the metatitanic acid washing procedure is produced, and the mass ratio of solid-liquid is 1;

    1~

    1;

    10 in the preprocessing process, stirring velocity is 50~

    200rpm, temperature of reaction is 20 ℃



    65 ℃

    , and the reaction times is 1~

    4h, pre-treatment gained slip is sent into solid-liquid separator carry out solid-liquid separation, obtain the solid phase of liquid content 5~

    20%, the gained solid phase enters hydrolysis procedure and carries out acidolysis;

    Calcining temperature in the calcination process of described metatitanic acid is 920 ℃



    1000 ℃

    .

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