Method for beneficiating discolored kaolin to produce high brigh

Details Method for beneficiating discolored kaolin to produce high brigh Method for beneficiating discolored kaolin to produce high brigh

1995-10-18

1997-11-11

Marcheschi, Michael

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106488, 501148, 25218726, 25218621, 209 5, 209 10, 209 39, 4231181, B03D 306, C04B 3304, C04B 3310

Patent

active

056859007

ABSTRACT:
A method for beneficiating a low brightness fine particle size discolored kaolin crude to produce a high brightness coating clay. By combining the two beneficiating techniques of selective flocculation and ozonation, a synergistic phenomena occurs and a clay product of superior brightness and whiteness can be obtained from fine discolored clays that cannot be achieved by beneficiation with either process singularly. By passing the flocced clay through ozonation, the flocculant polymer left in the clay can be completely destroyed.

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