Diagram of a cylindrical froth flotation cell with camera and light used in image analysis of the froth surface. Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. .. averaging 2.5 percent copper. By 1991, the average grade of copper ore mined in the US had fallen to only 0.6 percent.
Overcoming Challenges in Mineral Processing Through .
Mar 4, 2014 . Role of mineral separation/concentration. Ore. Concentrate. Grade? Selectivity of . B$ and up for typical Copper project. Simultaneously in the .. new requirements for flotation equipment Large enough equipment was not.