Fundamental studies of bulk flow of fine coal: Final technical report

Technical Report · Mon Apr 24 04:00:00 EDT 1989

OSTI ID:5995310

Hogg, R; Luckie, P T; Kumar, A

The shear stress characteristics of fine coal and the flow properties as applicable to overhead storage (silos, bunkers, etc.) have been determined in this investigation. An evaluation of these flow properties has been determined from two types of shear stress measurement devices, the Jenike Shear Cell Tester and the Peschl Shear Cell Tester. The two shear testers differs basically in respect of the direction of relative movement of the two parts (fixed and moving) of the shear cell. A method has been suggested to determine the major principal stress and the effective angle of internal friction independent of the determination of the yield locus. The graphical plots show that the new method substantially reduces the uncertainty in the value of the two flow properties, the effective angle of internal friction and the flow function. Additionally, the effect of particle size and surface moisture content in the coals on the flow function has been studied and a stepwise regression model building technique known as residual analysis has been applied to correlate the flow function parameters to the particle size and the moisture content. 49 refs., 48 figs., 7 tabs.

• Research Organization: Pennsylvania State Univ., University Park, PA (USA)
• DOE Contract Number: FG22-84PC70805
• OSTI ID: 5995310
• Report Number(s): DOE/PC/70805-T2; ON: DE89010823
• 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
DOCUMENT TYPES
ENERGY SOURCES
EQUATIONS
FLUID FLOW
FOSSIL FUELS
FUELS
MATERIALS
MATHEMATICS
NUMERICAL SOLUTION
PARTICLE SIZE
PROGRESS REPORT
REGRESSION ANALYSIS
SHEAR
SIZE
SOLIDS FLOW
STATISTICS
STRESS ANALYSIS