Advanced physical fine coal cleaning: Microbubble flotation: Final report, Volume 1

Technical Report · Thu Sep 01 04:00:00 EDT 1988

OSTI ID:6525205

The primary objective is to perform large-scale (1 tph of feed) tests that yield sufficient technical and economic data to permit decisions to be made for full-scale commercial testing and eventual operation of advance physical fine coal cleaning processes. Specific objectives: significant pyritic sulfur removal - the advanced process should reduce pyritic sulfur by a significant amount, more than is possible with state-of-the-art fine coal cleaning; ash content of not more than 2 weight percent (dry basis) in the clean coal; an energy recovery of 80 percent, based on the total Btus in the ROM coal compared with Btus in the clean coal; and as a measure to assure ease of handling and transportability, a clean coal and refuse surface moisture content not greater than 30 weight percent. BNI's process, which uses microbubble flotation, had shown promising results. The program included laboratory and bench-scale tests with selected coals to confirm the suitability of microbubble flotation for those coals, and to define various test parameters for the 1 tph POC test work. After the 4-month POC test program, test data would be used to prepare a conceptual design for a commercial size plant. 76 figs., 80 tabs.

• Research Organization: Bechtel National, Inc., San Francisco, CA (USA)
• DOE Contract Number: AC22-85PC81205
• OSTI ID: 6525205
• Report Number(s): DOE/PC/81205-T6-Vol.1; ON: TI89003925
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
ASH CONTENT
BENCH-SCALE EXPERIMENTS
BUBBLES
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CLEANING
COAL
COAL PREPARATION PLANTS
COMMINUTION
CRYSTAL STRUCTURE
DESIGN
DOCUMENT TYPES
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
GRINDING
INDUSTRIAL PLANTS
MACHINING
MATERIALS
MICROSTRUCTURE
MINERALS
PARTICLE SIZE
PERFORMANCE
PETROGRAPHY
PROGRESS REPORT
SEPARATION PROCESSES
SIZE
SULFUR CONTENT
YIELDS