Compact slurry preparation system for oil sand

Details Compact slurry preparation system for oil sand Compact slurry preparation system for oil sand

2004-09-02

2008-10-07

Bhat, N. (Department: 1797)

Mineral oils: processes and products

Tar sand treatment with liquid

C196S014520, C241S021000, C241S062000, C406S137000

Reexamination Certificate

active

07431830

ABSTRACT:
Staged crushing combined with water addition and mixing is practiced at the mine site to prepare an oil sand slurry ready for hydrotransport. More particularly, as-mined oil sand is crushed to conveyable size (e.g. —24″) using a mobile crusher. The pre-crushed ore product is conveyed to a dry ore surge bin. Ore is withdrawn from the bin and elevated to the upper end of a slurry preparation tower having downwardly aligned process components to enable gravity feed. The ore is further crushed in stages to pumpable size (e.g. —4″) by a stack of crushers and water is added during comminution. The ore and water are mixed in a mixing box and delivered to a pump box. The surge bin and tower are relocatable. Screening and oversize reject treatment have been eliminated to achieve compactness and enable relocatability.

REFERENCES:
patent: 5772127 (1998-06-01), Maciejewski et al.
patent: 5954277 (1999-09-01), Maciejewski et al.
patent: 6027056 (2000-02-01), Maciejewski et al.
patent: 6821060 (2004-11-01), McTurk et al.
patent: 2195604 (1998-07-01), None
patent: 2332207 (2002-07-01), None
patent: WO 03/056134 (2003-07-01), None

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