Method of producing sodium bentonite
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMusaab Ibrahim Magzoub, Mustafa Saleh Nasser, Ibnelwaleed Ali Hussein, Mohamed Ahmed Nasr Eldin Mahmoud, Abdullah Saad Sultan
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Abstract
Method of converting calcium bentonite to sodium bentonite that is suitable for use as drilling mud or a cement additive. After the addition of a calcium bentonite sample to a prepared soda ash solution at predetermined soda ash/bentonite weight ratios, the bentonite suspension is continuously heated and stirred for up to 24 h. The heating and stirring are crucial towards enhancing the sodium activation of the bentonite, as well as other rheological properties of the bentonite.
Claims16
A method of converting calcium bentonite to sodium bentonite, comprising:
- adding a calcium bentonite sample to a sodium carbonate aqueous solution to form a bentonite suspension comprising calcium bentonite, sodium carbonate, and water, wherein the bentonite suspension has a sodium carbonate/calcium bentonite weight ratio of 1:7 to 1:23 and a calcium bentonite concentration of 5-10 wt % based on a total weight of water;
- and
- continuously heating and stirring the bentonite suspension at 60-80° C. for 6-24 hours to form sodium bentonite and calcium carbonate.
Dependencies are inferred from the claim text.