Hot water extraction cell containing two or more deflection baffles. [Patent for processing of tar sands]
A description is given of an improved separation cell specifically designed for use in the hot water process for treating tar sands. The separation cell contains a tank with an upwardly concave bottom and a rotatable center shaft running on the vertical axis of the tank from the top to the bottom. Middlings outlets are at the side of the tank, a sands discharge outlet at the bottom of the tank, and an overflow means is connected at the side of the tank. A sand rake is connected to the center shaft to rotate with the shaft and positioned to move settled sand toward the sand discharge outlet. A means for rotating the center shaft is provided. The improvement consists of a combination of two or more saucer-shaped deflecting baffles located in the cell and concentric with the shaft and affixed to it. The lowest baffle is located immediately above the sand rake, inverted to the bottom of the cell, and with a skirt extending downward from the outer periphery of it. At least one other deflecting baffle is located in between the feed well and the lower baffle.
- Assignee:
- Great Canadian Oil Sands Ltd.
- Patent Number(s):
- US 3986592
- OSTI ID:
- 7307632
- Country of Publication:
- United States
- Language:
- English
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