Treatment of tailings streams with one or more dosages of lime, and associated systems and methods

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12209039
APP PUB NO 20230219832A1
SERIAL NO

18173394

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Abstract

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Methods and systems for treating oil sands tailings streams using multiple dosages of lime are disclosed herein. In some embodiments, the method comprises providing a tailings stream including 3-40% solids by total weight, combining the tailings stream with a first dosage of lime to produce a first mixture having a pH of less than 12.0, and then combining the first mixture with a polymer to produce a second mixture. In some embodiments, the method can further include combining the second mixture with a second dosage of lime to produce a third mixture having a pH greater than 12.0, and dewatering the third mixture in a centrifuge unit and/or a pressure filtration unit to produce a product stream having 55% or more solids by weight.

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Patent Owner(s)

  • GRAYMONT WESTERN CANADA INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fox, Jesse Wayne West Valley City, US 11 20
Leikam, Jared Ira West Jordan, US 22 45
Romaniuk, Nikolas Andrei Alberta, CA 20 21
Tate, Michael John Oregon, US 24 46

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