| Purified attapulgite clay (Fuller's Earth)
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 allow the non-Attapulgite
clay particles to be liberated, 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 has a free moisture content
of 2-3%. The dried Attapulgite clay with adsorbed dispersant is
redispersed in water and retains thixotropic properties.
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