1
Willem P C Duyvesteyn, Julia Rose Budden, Merijn Amilcare Picavet: Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands. BHP Minerals International, Hopgood Calimafde Kalil & Judlowe, October 19, 1999: US05968349 (370 worldwide citation)

A process for the extraction of bitumen from bitumen froth generated from tar sands is disclosed. In this process, bitumen froth is extracted from tar sands using a water process without requiring the use of caustic soda. The froth is treated in a counter-current decantation circuit with a paraffini ...


2
Duyvesteyn Willem Pc, Budden Julia R, Picavet Merijn A: Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands. Bhp Minerals International, KALIL Eugene J, May 25, 2000: WO/2000/029507

A process for the extraction of bitumen from bitumen froth generated from tar sands is disclosed. In this process, bitumen froth (9) is extracted from tar sands using a water process without requiring the use of caustic soda. The froth is treated in a counter-current decantation circuit with a paraf ...