![Major Mines Projects | Grasberg Block Cave Mine](/6ky5vhl/94.jpg)
Major Mines Projects | Grasberg Block Cave Mine
Crushing and grinding transform ore size into fine sand in order to release particles containing copper and gold. Flotation is a separation process to produce coppergold concentrate. Concentrate slurry consisting of finely ground ore and water mixed with reagents is introduced into a series of mixing tanks called flotation cells, where air is pumped into the slurry.