The froth floatation
of coal has been extensively studied and found to be feasible to enhance the quality of coal by reducing deleterious pyrite and removing unwanted ash-forming minerals .
Bench scale testing of Grassy Mountain material will include initial grindability testing, gravity separation efficiency and circuit design, possible re-grinding requirements, froth floatation
effectiveness, closed circuit leaching efficiency.
Management estimates the insertion of magnetic separation after grinding and prior to froth floatation may generate revenues roughly equal to the $15/tonne total operating cost estimated in the PEA at 80,000 tonnes per day, although perhaps adding 10% to operating costs, which could roughly double its NPV.
Mining, crushing, grinding, vat acid leaching and sale of a concentrate may bypass high pressure grinding rolls, froth floatation and hydromet refining to cut "target cap ex.
An investigation into beneficiation of Jordanian El-Lajjun oil shale by froth floatation
// Oil Shale.
Mr Graham reported that Arrakis suggested a Phase One concentration analysis, employing gravity concentration, froth floatation
, and inductive magnetic separation could improve the grade of the precious metals for processing and extraction.
Froth floatation is a process used to selectively separate hydrophobic minerals suspended in a solution by attaching them to gas bubbles and transferring into the froth layers.
Froth floatation of coal has been extensively studied and found to be feasible in enhancing the quality of coal by removal of unwanted minerals such as pyrite which is easily separated.
This is an example of a typical froth floatation unit used in the mining industry.
The maximum enhancement was approximately around 3% achieved in two stages froth floatation as shown in Table 3.
9% separation of phosphate was achieved after two stages of froth floatation.