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Process for preparing a graphite product

  • US 4,311,682 A
  • Filed: 09/02/1980
  • Issued: 01/19/1982
  • Est. Priority Date: 09/06/1979
  • Status: Expired due to Term
First Claim
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1. A process for preparing a graphite product, which comprises:

  • (a) mixing a hydrocarbon material derived from coal with a hydrocarbon solvent having a boiling point or a distillation temperature for 95 vol % of the solvent less than 350°

    C. and a B.M.C.I. value of 5 to 70, said value being defined asB.M.C.I.=48,640/k+473.7S-456.8wherein k is the average boiling point (°

    K.) and S is the specific gravity at 60°

    F.;

    (b) separating insoluble material which settles from the resulting mixture upon standing;

    (c) removing by distillation at least a portion of said solvent from the insoluble matter free mixture;

    (d) coking the residue obtained after distillation, thereby forming an acicular, green coke;

    (e) calcining said acicular green coke, thereby obtaining an acicular calcined coke having a pore volume of more than 40×

    10-3 cc/g; and

    (f) blending said acicular calcined coke with a binder, shaping the blend and graphitizing said blend at a high temperature.

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