Coal-sand attrition system and its' importance in fine coal cleaning

Technical Report · Wed Jan 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/6911628· OSTI ID:6911628

Mehta, R K; Schultz, C W

The primary objective of this project is geared toward the substitution of steel media by fracturing silica sand as a grinding media for ultraline coal grinding. The project has been divided into four subgroups for bookkeeping purposes and possible ease of execution. Some of the tasks would be executed simultaneously as overlapping is inevitable. The grouping is as follows: (1) sample procurement, preparation, and characterization; (2) batch grinding tests; (3) continuous grinding tests; and, (4) fracture mechanics. The hardgrove indices for the four coals employed in this work have finally been determined by the personnel at the R and D Center of Drummond Coal Company using 14 [times] 28 mesh feed size materials. The values obtained for the respective coals are given in Table 1.

• Research Organization: Alabama Univ., University, AL (United States). Mineral Resources Inst.
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-91PC91280
• OSTI ID: 6911628
• Report Number(s): DOE/PC/91280-T5; ON: DE93004929
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
GRINDING
HARDNESS
COAL PREPARATION
EXPERIMENTAL DATA
PROGRESS REPORT
SILICON OXIDES
STEELS
ALLOYS
CARBONACEOUS MATERIALS
CHALCOGENIDES
COMMINUTION
DATA
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MACHINING
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
010300* - Coal
Lignite
& Peat- Preparation- (1987-)