Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 12, July--September 1995

Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 15, April--June 1996

“…As described during previous Quarterly Progress Reports [11,12,13,141 Preliminary results indicate some interesting relationships for the variables tested (feed rate, frother dosage, and air volume). It is generally considered that recovery increases with a decrease in feed rate, increase in frother, and increase in air volume.…”

Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 13, October--December, 1995

“…As a practical matter, the particle size distributions of the two froth slurries did not differ very much [12]. A considerable amount of launder water was needed when producing the two slurries so they only contained 10-12 % solids.…”

Engineering development of advanced physical fine coal cleaning for premium fuel applications. Quarterly technical progress report 14, January--March 1996

“…As described during previous Quarterly Progress Reports [II,12,131, an existing 30-inch diameter MicroceP flotation column was refurbished and installed in the Lady Dunn Plant for this engineering development work. A highquality product, containing about 10% ash was produced at approximately 80% combustible matter recovery [I 31.…”