Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1991-12-04
1993-02-16
Hruskoci, Peter
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209158, 208390, 208391, 208425, 208426, 241 16, 241 20, 241 22, 241 24, B03D 102, C10G 100, C10G 104
Patent
active
051868202
ABSTRACT:
A process for separating bitumen from tar sands, which comprises: a) agitating a mixture of tar sand with substantially coarse clean sand at ambient or below ambient temperature in the presence of water, so as to mechanically shear bitumen and enhance the detachment of bitumen particles from mineral matter in said tar sand, b) eluting the detached bitumen and fine mineral matter from the coarse sand by an upward flow of water while stirring gently, c) returning the coarse sand to step a) for reuse, and d) subjecting the eluted bitumen and fine mineral matter to froth flotation to separate the bitumen from said fine mineral matter, wherein the flotation is effected without using any reagents.
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New Aspects of Water-Based Physical Separation Processes for Domestic Tar Sands, Miller, J. D. et al, 1985 Eastern Oil Shale Symposium, Nov. 18-20; 1985.
Concentration of Utah Tar Sands by an Ambient Temperature Flotation Process, Miller, J. D. et al, International Journal of Mineral Processing, 9 (1982) 269-287.
Irvin G. Daniel
Schultz Clifford W.
Hruskoci Peter
Lithgow Thomas M.
University of Alabama
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