Calcium carbonate granulation

  • US 7,198,653 B2
  • Filed: 07/31/2003
  • Issued: 04/03/2007
  • Est. Priority Date: 07/31/2003
  • Status: Active Grant
First Claim
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1. A process for preparing a high density calcium carbonate granulation comprising the steps of:

  • (1) mixing a composition comprising calcium carbonate powder having a median particle diameter between about 0.1 and about 20 μ

    m in a high shear mixer; and

    (2) drying the composition in a fluidized bed oven, thereby resulting in a calcium carbonate granulation having a tap density between about 0.9 g/cm3 and about 2.0 g/cm3.

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