10.5937/mmeb1403085m = The effect of grinding fineness on the results of flotation concentration of ore from the copper deposit Veliki Krivelj

One of the influential parameters on the process of flotation concentration is a coarseness of particles and openness of mineral resources. In the process of flotation concentration of ore from the deposit Veliki Krivelj, the grinding fineness since the opening of the mine in 1982 has been maintained at values around 58% -0.074 mm. Since then, the operation descended into the deeper parts of deposit, the copper content decreased in the ore and it was assumed that the optimal fineness of ore grinding was changed. This paper presents the results of testing the fineness of grin-ding on recovery and copper content of the basic copper concentrate and the impact of regrinding on recovery and copper content in the purified copper concentrate on a sample of ore from the deposits Veliki Krivelj. The laboratory experiments flotation concentration were carried out, the balances of concentration were made and it is concluded that finer grinding is necessary for better concentration. The optimal regrinding degree of basic concentrate was also determined.