Process for secondary recovery of bitumen in hot water extraction of tar sand

Update item information
Publication Type patent
Author Porteous, Kenneth; Lavender, William
Title Process for secondary recovery of bitumen in hot water extraction of tar sand
Date 1979-10-23
Description It has been found that tank-type air flotation cells are more efficient, when treating hot water process middlings containing in excess of about 3% bitumen, than trough-type air flotation cells. Also, it has been found that the trough-type cells are more efficient than the tank-type cells when treating middlings containing less than about 3% bitumen. Thus a secondary recovery circuit is proposed wherein the middlings are first treated in one or more tank-type cells in series and the underflow from the last tank-type cell is treated in one or more banks of trough-type cells.
Publisher United States Patent and Trademark Office
Subject patent; hot water process treatment; secondary recovery of bitumen; tar sand extraction
Bibliographic Citation Porteous, K., Lavender, W. (1979). Process for secondary recovery of bitumen in hot water extraction of tar sand. United States Patent 4,172,025. United States Patent and Trademark Office.
Relation Has Part United States Patent 4,172,025
ARK ark:/87278/s63b8z9j
Setname ir_eua
Date Created 2015-01-23
Date Modified 2021-05-06
ID 214328
Reference URL https://collections.lib.utah.edu/ark:/87278/s63b8z9j
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