Developing/modifying coal grinding procedures and equipment to produce predictable size distributions during coal preparation. Quarterly progress report, January--March 1978

Technical Report · Sat Apr 15 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6501305· OSTI ID:6501305

Luckie, P. T.

The Study Phase involved the subtask Laboratory work centered on determining the mechanical properties of the test coals, the analysis of cylpebs as a grinding media and laboratory grinding of coal in fuel oil. The series of benchmark tests--variation of classifier settings; variation of air rates; variation of feed rate and coal types--on the ball and race mill were continued. The wet ball mill grinding system was operated in open circuit, first grinding coal in No. 6 fuel oil and then grinding coal in water. The air swept ball mill grinding system was returned to service after acceptable specific energy values were demonstrated. This series basically completed the nonsteepest size distribution testing for this system except for coarse grinding. Shakedown/steady state testing of the air swept hammer mill system was initiated.

• Research Organization: Kennedy Van Saun Corp., Danville, PA (USA)
• OSTI ID: 6501305
• Report Number(s): FE-2475-19
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
COAL
COAL PREPARATION
COMMINUTION
COMPARATIVE EVALUATIONS
CRUSHING
ENERGY SOURCES
FOSSIL FUELS
FUELS
GRINDING
GRINDING MACHINES
MACHINE TOOLS
MACHINING
MECHANICAL PROPERTIES
PARTICLE SIZE
SIZE
TENSILE PROPERTIES