Crushing and Grinding Units
In the CIL (Carbon in Leach) or CIP (Carbon in Pulp) plants while the precious metals are being dissolved by the cyanide solution in the large volume tanks the dissolved metals are adsorbed by the active carbon. These processes are generally preferred for the relatively high grade and lower reserve ore types with very fine graded precious metals. The major difference between the CIL and CIP processes is; during the CIL process both cyanide leaching and carbon adsorption take place in the same tanks but in the CIP process first leaching occurs in the first couple of tanks then carbon adsorption take place in the following tanks while leaching continues. In all of these tanks agitation and air sparging is available.