Coal-pyrite flotation: a modified technique using concentrated second-stage pulp. Technical progress report
The Bureau of Mines two-stage coal-pyrite flotation process was modified to provide a more concentrated final clean coal slurry underflow that could be dewatered economically by filtration or centrifugation. This was accomplished by doing the first-stage coal flotation step in the conventional manner with a slurry of about 8 percent solids but running the second-stage pyrite flotation step with undiluted coal froth concentrate containing about 25 percent solids. The final clean coal underflow produced by the new technique contained between 26 and 30 percent solids; this pulp was sufficiently concentrated to be filtered industrially without further thickening. Sulfur removal was equal to that obtained using dilute second-stage pulp. (GRA)
- Research Organization:
- Bureau of Mines, Pittsburgh, Pa. (USA). Pittsburgh Mining and Safety Research Center
- OSTI ID:
- 7192453
- Report Number(s):
- PB-243795/2ST; BM-TPR-91
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chemical conditioning of fine coal for improved flotation and pyrite rejection
Two-stage thickening of flotation tailings in radial thickeners
Related Subjects
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COMMINUTION
DESULFURIZATION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
IRON COMPOUNDS
IRON SULFIDES
MINERALS
MIXTURES
NONMETALS
ORES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PILOT PLANTS
PYRITE
PYRITES
REMOVAL
SEPARATION PROCESSES
SLURRIES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR ORES
SUSPENSIONS
TRANSITION ELEMENT COMPOUNDS
XANTHATES