A new approach in ultrapurification of coal by selective flocculation

Technical Report · Fri Dec 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/5143601· OSTI ID:5143601

Moudgil, B M

The mathematical and computational model of the selective flocculation process for separating coal pyrite from coal has been further developed. Computational simulation in Fortran (as opposed to Turbo Pascal) has enabled consideration of 10{sup 6} particles which is of the order of number of particles encountered in experimental systems. Relative importance of {Phi} (active sites ratio) over {Theta} (fractional surface coverage) indicated that the desired separation may not be possible by controlling the polymer dosage, and that it is more important to select a polymer which has no affinity for the inert component(s). Also, feed composition, according to the simulations, should not have any significant influence over the selectivity. Selective flocculation tests with two previously selected polymers indicated that separation of coal pyrite from coal is possible. Effect of feed composition, however, was found to be different than predicted by the computational model. This has been attributed to the experimental parameters which are not optimized at the present time. 3 refs., 3 figs., 5 tabs.

• Research Organization: Florida Univ., Gainesville, FL (USA). Mineral Resources Research Center
• Sponsoring Organization: DOE/FE
• DOE Contract Number: FG22-88PC88917
• OSTI ID: 5143601
• Report Number(s): DOE/PC/88917-T3; ON: DE90006173
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
FLOCCULATION
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MATHEMATICAL MODELS
MINERALS
MIXTURES
PRECIPITATION
PROGRESS REPORT
PYRITE
SEPARATION PROCESSES
SIMULATION
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS