In flotation, the froth structure and froth stability are known to play a significant role in determining the mineral concentrate grade and recovery. Froth stability is not only depending on the type and amount of the frother used, but also on the amount and nature of the suspended particles. Furthermore, there are other parameters such as quality of water which are not yet fully understood. In...

This paper reports physical and physicochemical routes for the recycling of gold, silver, copper from waste printed circuit boards (WPCBs). The results optical micrographs indicated that metals matrix are substantially separated slot after comminution process. effects various operational factors, including gravitational force fluidization water, centrifugal separators on separation performance ...

tabas mines in iran have coal sources which are suitable for use in metallurgy industries as coking coal. but the high sulfur content of this coal imposes severe limitations on its utilization as the sulfur oxide gases evolved from the combustion of high sulfur coals result in acid rains and corrosion of equipments. in this work, attempts have been made to reduce sulfur from high sulfur coal of...