Coal-fired power plants produce over 300 million tons of fly ash each year and this amount
still increases. Recently, this severe source of environmental contaminants is considered as …

Only when problems in ultrafine coal particle beneficiation process are well understood and
clarified, efficient methods can be devised to recover ultrafine coal particles in an …

A 2 m diameter REFLUX™ Flotation Cell was fed at roughly 210 m 3/h, equivalent to a flux of
1.9 cm/s, about twice the maximum rate used in conventional flotation cells. The coal feed …

Aluminosilicate microspheres are a valuable fraction of coal fly ash with diverse applications
due to their low density. Currently, there is no efficient and ecologically rational method of …

A new type of reflux classifier with a trapezoidal inclined channel has been designed and
used for pre-concentration of fine-grained low-grade oxidized antimony tailings. Theoretical …

Cenospheres are one of the most valuable components found in the fly ash waste of coal-
fired power stations, consisting of hollow, aluminosilicate spherical shells and offering very …

The rapid development of wireless telecommunications has revolutionarily modernized the
global society, whereas it has created serious concerns on harmful effects of the …