Processing procedure for transforming previously unusable clays

Details Processing procedure for transforming previously unusable clays Processing procedure for transforming previously unusable clays

1999-05-07

2000-12-05

Dunn, Tom

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

4233281, 106481, 106482, 106483, 106484, 501141, 501145, 501146, 501147, 501150, C01B 3326

Patent

active

06156284&

ABSTRACT:
An improved process for transforming clays that cannot be utilized in commercial pigment production to low-viscosity pigment for commercial application is described whereby a treated clay is produced having a reduced viscosity as compared to the initial clay when compared at equivalent solids content. The process comprises the steps of: drying the clay; mixing the dried clay with an aqueous solution of an alkali metal salt wherein the alkali metal salt is selected from the group consisting of lithium, potassium, rubidium and cesium salts; extruding the material obtained from alkali metal salt treatment; heat-treating the extruded material and high-shear blunging of the heat-treated material. Typically, a high viscosity clay that has been treated with this five-step procedure will exhibit a viscosity that is about 10% to about 20% of the viscosity of the starting clay.

REFERENCES:
patent: 4826536 (1989-05-01), Raythatha et al.
patent: 5112782 (1992-05-01), Brown et al.
patent: 5543372 (1996-08-01), Shi et al.
patent: 5545599 (1996-08-01), Pickering, Jr. et al.
patent: 5685899 (1997-11-01), Norris et al.
patent: 5840113 (1998-11-01), Freeman et al.
patent: 5891326 (1999-04-01), Shi et al.

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