B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
361/1, 196/24
B03B 9/02 (2006.01) B03D 1/02 (2006.01)
Patent
CA 1326571
ABSTRACT OF THE DISCLOSURE A process is disclosed for recovering metal values from aqueous tailings slurry obtained from a hot water extraction process in which bitumen is recovered from bituminous sand, the slurry containing solids com- prising by weight from about 5 to about 9% titanium, from about 2 to about 5% zirconium, from about 8 to about 12% iron, from about 2 to about 5% residual bitumen and from about 50 to about 70% siliceous material, the pulp density of the tailings slurry being from about 8 to about 20% by weight solids. The process comprises ensuring that the pH of the tailings slurry is in the range of from about 8 to about 11.5, subjecting the slurry to a flotation step in a flotation vessel comprising injecting air to cause flotation of a substantial amount of said metal values in a froth above the siliceous and other unwanted material, and removing the floating froth containing the substantial amount of metal values from the remainder of the slurry.
527560
Bulani Walter
Cairns William
Ityokumbul Mku Thaddeus
Kosaric Naim
Gowling Lafleur Henderson Llp
University Of Western Ontario (the)
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