The effect of feed source in the hot water processing of Utah tar sand

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School or College College of Mines & Earth Sciences; University of Utah
Department Metallurgical Engineering
Author Misra, M.; Miller, J. D.
Title The effect of feed source in the hot water processing of Utah tar sand
Date 1979-02
Description The processing strategy for the effective separation of bitumen from low grade (< 10 weight percent bitumen) Utah tar sands by a hot water process differs significantly from that used for the processing of high grade (> 10 weight percent bitumen) Utah tar sands. Excellent separations (coefficient of separation = 0.9) can be achieved for high grade Utah tar sands by Intense hot water digestion followed by a modified froth flotation step. Such a technique is ineffective for low grade tar sands. In order to change the characteristics of the low grade car sand an attempt was made to enrich the bitumen content of the feed to greater than 10 weight percent by recycle of bitumen concentrate to the digestion stage. However the quality of the separation was not Improved under these circumstances. Similarly feed enrichment by heat treating the low grade feed with recycled concentrate prior to digestion did not improve the separation. More successful separations of low grade Utah tar sands were finally achieved by modification of the viscosity of the low grade bitumen with controlled addition of diluent. These results of the hot water separation tests and variations in the quality of separation are Interpreted in terms of the physical properties of the bitumen and the surface bonding forces operative at the bitumen-sand interface.
Publisher Society of Mining Engineers of AIME
Subject Tar sand; Utah; Bitumen; Hot water separation; Froth flotation; energy demand
Bibliographic Citation Misra, M., Miller, J. D. (1979). The effect of feed source in the hot water processing of Utah tar sand. Society of Mining Engineers of AIME. Preprint: Paper no. 79.
Relation Has Part Preprint: Paper no. 79
ARK ark:/87278/s6ht5nf1
Setname ir_eua
Date Created 2015-04-14
Date Modified 2015-04-14
ID 214634
Reference URL https://collections.lib.utah.edu/ark:/87278/s6ht5nf1
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