Method and composition for treating tailings

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United States of America Patent

PATENT NO 11845899
APP PUB NO 20210284914A1
SERIAL NO

17220240

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Abstract

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The invention relates to method and composition for treating tailings from a separation process, where bitumen is separated from mineral solids. Tailings comprise an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method comprises addition of a flocculating agent comprising polyacrylamide to the tailings, as well as addition of an auxiliary agent comprising ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which comprise solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition comprises a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.

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Patent Owner(s)

Patent OwnerAddress
STERLING SPECIALTY CHEMICALS HOLDING UK LIMITEDMIDDLESEX HA1 1BE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aujla, Sukhjit The Woodlands, US 22 83
Fenderson, Thomas Decatur, US 12 14
Fournier, Frances Marietta, US 24 94
King, Alistair Helsinki, FI 12 14
Kyllonen, Lasse Espoo, FI 5 0
Sklavounos, Evangelos Helsinki, FI 9 12

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