Preparation method of expansible graphite

Preparation method of expansible graphite

CN
  • CN 102,530,924 A
  • Filed: 12/08/2010
  • Published: 07/04/2012
  • Est. Priority Date: 12/08/2010
  • Status: Active Application
First Claim
Patent Images

1. a Preparation of Expansible Graphite method is characterized in that, comprises the steps:

  • Step 1, natural flake graphite is scattered in the ammonium nitrate solution, forms finely dispersed suspension-s;

    The pH value of step 2, regulating step one resulting suspension-s is 0~

    2;

    Step 3, the resulting suspension-s of step 2 was carried out hydro-thermal reaction 4 hours~

    48 hours under 100 ℃



    200 ℃

    ;

    Step 4, with the resulting suspension-s cooling of step 3, filtering-depositing, washing, drying, obtain expansible black lead.

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