Purified attapulgite clay

Details Purified attapulgite clay Purified attapulgite clay

1998-11-12

2000-10-10

Dunn, Tom

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Including organic component

502 80, 501148, 241 2423, 209 5, 209 47, B01J 2116

Patent

active

061301795

ABSTRACT:
A method for producing an attapulgite clay (Fuller's Earth) that significantly removes other types of clays and minerals, resulting in improved performance. A unique dispersant is used that will fully disperse the individual attapulgite particles in water such that the particles remain in suspension, and said dispersant will not fully disperse other clay and mineral species, which then can be easily separated through various techniques. The attapulgite clay may be recovered from the dispersion and dried in such a manner to produce a finely sized powder from ore, without the need for any grinding or milling operation. The dried attapulgite clay with adsorbed dispersant is redispersed in water and retain thixotropic properties.

REFERENCES:
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patent: 3617561 (1971-11-01), Fanselow
patent: 4782120 (1988-11-01), Rousset et al.
patent: 4915845 (1990-04-01), Leighton et al.
patent: 4966871 (1990-10-01), Brooks
patent: 5021094 (1991-06-01), Brown et al.
patent: 5358120 (1994-10-01), Gantt et al.
patent: 5783628 (1998-07-01), Yada et al.
patent: 5938833 (1999-08-01), Willis et al.

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