Engineering development of advanced physical fine coal cleaning technologies: Froth flotation
The design criteria for each unit operation have been developed based upon a number of variables. These variables, at this time, are based upon the best engineering design information available to industry. A number of assumptions utilized in the design criteria are uncertain. The uncertainties of inert atmospheres for grinding and flotation as well as pyrite depressants were answered by the Surface Control Project. It was determined that inerting was not required and no new'' reagents were presented that improved the flotation results. In addition, Tasks 5 and 6 results indicated the required reagent dosage for conventional flotation and advanced flotation. Task 5 results also indicated the need for a clean coal,thickener, the flocculent dosages for both the clean coal and refuse thickeners, and final dewatering requirements. The results from Tasks 5 and 6 and summarized in Task 7 indicate several uncertainties that require continuous long duration testing. The first is the possibility of producing a grab product for both the Pittsburgh and Illinois No. 6 coals in conventional flotation. Second what does long-term recirculation of clarified water do to the product quality The verification process and real data obtained from Tasks 5 and 6 greatly reduced the capital and operating costs for the process. This was anticipated and the test work indeed provided confirming data.
- Research Organization:
- ICF Kaiser Engineers, Inc., Pittsburgh, PA (United States); Ohio Dept. of Development, Columbus, OH (United States). Coal Office; Babcock and Wilcox Co., New Orleans, LA (United States); Consolidation Coal Co., Pittsburgh, PA (United States); Center for Research on Sulfur in Coal, Carterville, IL (United States); EIMCO Processed Equipment Co., Salt Lake City, UT (United States); Illinois State Geological Survey, Champaign, IL (United States); Kentucky Energy Cabinet Lab., Lexington, KY (United States); Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-88PC88881
- OSTI ID:
- 6704405
- Report Number(s):
- DOE/PC/88881-T12; ON: DE93011456
- Country of Publication:
- United States
- Language:
- English
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Engineering development of advanced physical fine coal cleaning technologies: Froth flotation
Engineering development of advanced physical fine coal cleaning technologies: Froth flotation. Quarterly technical progress report No. 9, October 1, 1990--December 31, 1990
Related Subjects
COAL FINES
WATER REMOVAL
COAL PREPARATION
FLOTATION
CAPITALIZED COST
COAL
DESIGN
DESULFURIZATION
GRINDING
OPERATING COST
PROGRESS REPORT
PYRITE
REAGENTS
REMOVAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMMINUTION
COST
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
MACHINING
MATERIALS
MINERALS
SEPARATION PROCESSES
SULFIDE MINERALS
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