Technology for purifying low-grade fluorite

Technology for purifying low-grade fluorite

  • CN 101,913,641 B
  • Filed: 08/31/2010
  • Issued: 07/09/2014
  • Est. Priority Date: 08/31/2010
  • Status: Active Grant
First Claim
Patent Images

1. a purifying technique for low-grade fluorite, is characterized in that:

  • comprise the following steps;

    (1) adds water and the fluorite of metering in reactor, and water and fluorite mass ratio 0.5~

    6.0;

    1, make slip;

    (2) under agitation to the sulfuric acid that adds metering in slip, the mol ratio of the silicon-dioxide in the sulfuric acid adding and raw material fluorite is H 2sO 4;

    SiO 2=3~

    9;

    1, is warming up to 85 ℃



    95 ℃

    , stirring reaction 40~

    180min;

    (3) react complete, material vacuum is filtered or centrifugation, obtain solid materials, dry.

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