Shale oil recovery systems incorporating ore beneficiation : final report, October 1982
Name
EL_TR_1982_041.pdf
Size
10.06 MB
Format
Adobe PDF
Checksum (MD5)
18d0dab2db4df7eb0eef608182e7f87d
Author(s)
Weiss, M. A.
Alternative Title
Recovery systems incorporating ore beneficiation, Shale oil.
Date Issued
1982
Publisher
Cambridge, Mass. : Massachusetts Institute of Technology, Energy Laboratory, 1982
Series/Report no.
Energy Laboratory report (Massachusetts Institute of Technology. Energy Laboratory) no. MIT-EL 82-041.
Abstract
This study analyzed the recovery of oil from oil shale by use of proposed systems which incorporate beneficiation of the shale ore (that is, concentration of the kerogen) before the oil-recovery step. The objective was to identify systems which could be more attractive than conventional surface retorting of ore. No experimental work was carried out. The systems analyzed consisted of beneficiation methods which could increase kerogen concentrations by at least four-fold. Potentially attractive low-enrichment methods such as density separation were not examined. The technical alternatives considered were bounded by the secondary crusher as input and raw shale oil as output.
A sequence of ball milling, froth flotation, and retorting concentrate is not attractive for Western shales compared to conventional ore retorting; transporting the concentrate to another location for retorting reduces air emissions in the ore region but cost reduction is questionable. The high capital and energy costs result largely from the ball milling step which is very inefficient. Major improvements in comminution seem achievable through research and such improvements, plus confirmation of other assumptions, could make high-enrichment beneficiation competitive with conventional processing.
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