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U.S. Department of Energy
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Bench-scale testing of the multi-gravity separator in combination with Microcel

Technical Report ·
DOI:https://doi.org/10.2172/6746690· OSTI ID:6746690

The primary objective of the proposed work is to design, install and operate an advanced fine coal processing circuit combining Microcel and MGS technologies. Both of these processes have specific advantages as stand-alone units. For example, the Microcel column is effective in removing ash-bearing mineral matter, while the MGS is capable of efficiently removing coal-pyrite composites. Therefore, by combining both of these unit operations into a single processing circuit, synergistic advantages can be gained. As a result, this circuit arrangement has the potential of improving coal quality beyond that which could be achieved using either one of the technologies individually. In addition to the primary objective, secondary objectives of the proposed test program will include: (1) Circuit Optimization: The performance of each unit operation, individually and combined, will be optimized by conducting parametric studies as a function of key operating variables. The goal of this work will be to maximize the rejections of pyritic sulfur and ash while maintaining a high energy recovery; and (2) Process Variability: The steady-state performance of the optimized processing circuit will be studied (i) by conducting several long-duration test runs over a period of several days and (ii) by testing coal samples from other sources specified by the participating coal companies.

Research Organization:
Virginia Center for Coal and Minerals Processing, Blacksburg, VA (United States); Carpco, Inc. (United States); Roberts and Schaefer Co., Salt Lake City, UT (United States); Consolidation Coal Co., Pittsburgh, PA (United States); Kerr-McGee Coal Corp., Oklahoma City, OK (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC22-92PC92205
OSTI ID:
6746690
Report Number(s):
DOE/PC/92205-T1; ON: DE93009703
Country of Publication:
United States
Language:
English