Shape study of fine coal particles

Technical Report · Wed May 01 04:00:00 EDT 1985

OSTI ID:5639692

Li, C C; Cavallaro, J A; Wizzard, J T; Rohar, P C

This paper presents an experimental and computational result on a three-dimensional shape model of fine coal particles, and an approach to describe and classify particle shape in terms of the elliptical approximation to their two-dimensional cross-sectional contours. The major semi-axis, minor semi-axis, orientation and tracing phase of each component ellipse, up to four harmonic components, were used as features to classify shapes of coal and pyrite particles. The semi-axes ratio of the fundamental ellipse indicates the elongation of the particle cross-sectional contour, while the harmonic content reflects the angularity of the contour or particle surface. The shape distribution obtained by such an analysis will provide an important physical characteristic of fine coal particles, which is needed in developing the advanced coal beneficiation processes. 16 refs., 8 figs.

• Research Organization: Pittsburgh Univ., PA (USA). Dept. of Electrical Engineering; USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 5639692
• Report Number(s): DOE/NBM-5014336; ON: DE85014336
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CALCULATION METHODS
CHALCOGENIDES
CLASSIFICATION
COAL FINES
CONFIGURATION
DATA
ELLIPTICAL CONFIGURATION
EQUATIONS
EXPERIMENTAL DATA
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MINERALS
NUMERICAL DATA
PYRITE
SHAPE
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS