Pretreated clays, their preparation and use in formulating...

Details Pretreated clays, their preparation and use in formulating... Pretreated clays, their preparation and use in formulating...

C - Chemistry, Metallurgy

09

K

C09K 8/24 (2006.01) C09K 8/14 (2006.01) C09K 7/02 (1995.01)

Patent

CA 2145090

Disclosed is a process for preparing aqueous, clay-based muds, not aggressive to layer clays, which process comprises a first step in which clay is treated with an aqueous solution containing the necessary amount of dispersant to fluidify the mud; a second step, of separation of so treated clay from the aqueous solution containing any not adsorbed dispersant, and, finally, a step of re-dispersion of so treated clay in water, in order to formulate the mud.

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