Jerry D Cook

US Patent:

44192282, Dec 6, 1983

Filed:

Aug 6, 1982

Appl. No.:

6/406074

Inventors:

Jerry A. Cook - Tennille GA
Gary L. Cobb - Davisboro GA

Assignee:

Anglo-American Clays Corporation - Sandersville GA

International Classification:

B03B 100

US Classification:

209 9

Abstract:

A method is disclosed for separating titaniferous and ferruginous discolorants from a crude kaolin clay. A dispersed aqueous slurry of the clay is formed containing a deflocculant and a fatty acid collecting agent, and the slurry is conditioned to coat the discolorants with the collecting agent to thereby render the discolorants hydrophobic. A system of sub-micron sized magnetic ferrite seeding particles, the surfaces of which have been rendered hydrophobic, is thereupon added to the slurry. The seeded slurry is mixed to coalesce the hydrophobic-surfaced discolorants with the hydrophobic-surfaced seeding particles, and the slurry is then subjected to a froth flotation, which removes substantial quantities of the discolorants and seeding partices coalesced therewith, and also removes excess seeding particles and excess collecting agent. The floatation-beneficiated slurry is then subjected to a magnetic separation by passing the slurry through a porous ferromagnetic matrix positioned in a magnetic field, having an intensity of at least 0. 5 kilogauss, to remove further quantities of the discolorants and seeding particles associated therewith, and to remove seeding particles unassociated with said discolorants.

US Patent:

46934278, Sep 15, 1987

Filed:

Dec 30, 1985

Appl. No.:

6/814644

Inventors:

Bomi M. Bilimoria - Tennille GA
Herbert I. Lewis - Wrens GA
Jerry A. Cook - Cartersville GA
Ralph E. Turner - Tennille GA
Robert H. Garner - Sandersville GA

Assignee:

E.C.C. America Inc. - Atlanta GA

International Classification:

B02C 2100

US Classification:

241 23

Abstract:

A method for increasing the bulk density and decreasing the time of wetting with water of a substantially anhydrous kaolin clay powder, comprising dry milling said powder in a media mill wherein the media is at least +5 mesh, and using work inputs of from about 5 to about 40 HP-hrs/ton of dry clay. The process enables improved handling characteristics for the treated clay with respect to bulk material handling systems.

US Patent:

45615977, Dec 31, 1985

Filed:

Oct 15, 1984

Appl. No.:

6/661266

Inventors:

Jerry A. Cook - Tennille GA
Robert H. Garner - Sandersville GA
Ralph E. Turner - Tennille GA
Bomi M. Bilimoria - Tennille GA

Assignee:

Anglo-American Clays Corp. - Atlanta GA

International Classification:

B02C 1704
B02C 1912

US Classification:

241 17

Abstract:

A method for increasing the bulk density and decreasing the time of wetting with water of a substantially anhydrous kaolin clay powder, comprising dry ball-milling the said powder using work inputs of from about 5 to about 40 HP-hrs/ton of dry clay, followed by pulverization in a high energy impact mill and classification to eliminate undesirable larger particles. The ball-milling may be effected by grinding the clay with ceramic balls of less than 5 inches diameter. The process enables improved handling characteristics for the treated clay with respect to bulk material handling systems.

US Patent:

43436943, Aug 10, 1982

Filed:

Aug 25, 1980

Appl. No.:

6/180976

Inventors:

Jerry A. Cook - Tennille GA
Gary L. Cobb - Davisboro GA

Assignee:

Anglo-American Clays Corporation - Sandersville GA

International Classification:

B03B 100

US Classification:

209 9

Abstract:

A method is disclosed for separating titaniferous and ferruginous discolorants from a crude kaolin clay. A dispersed aqueous slurry of the clay is formed containing a deflocculant and a fatty acid collecting agent, and the slurry is conditioned to coat the discolorants with the collecting agent to thereby render the discolorants hydrophobic. A system of sub-micron sized magnetic ferrite seeding particles, the surfaces of which have been rendered hydrophobic, is thereupon added to the slurry. The seeded slurry is mixed to coalesce the hydrophobic-surfaced discolorants with the hydrophobic-surfaced seeding particles, and the slurry is then subjected to a froth flotation, which removes substantial quantities of the discolorants and seeding particles coalesced therewith, and also removes excess seeding particles and excess collecting agent. The flotation-beneficiated slurry is then subjected to a magnetic separation by passing the slurry through a porous ferromagnetic matrix positioned in a magnetic field, having an intensity of at least 0. 5 kilogauss, to remove further quantities of the discolorants and seeding particles associated therewith, and to remove seeding particles unassociated with said discolorants.