The performance of leaching and bio-leaching from sulphide ores usiing SEVOP

The refractory or low grade copper chalcopyrite ores or galena/sphalerite domestic ores in Republic of Macedonia are investigated by conventional copper flotation and selective flotation for galena/sphalerite. In the meantime, investigations are directed to the new possibilities of leaching by microorganisms – bioleaching. The paper is result of these technologies and investigations carried out for recovery of in the mentioned ores. Using Simplex EVOP and computer programme. Multisimplex the tabular and especially graphic performaces are most acceptable and excellent way for presentation of the leaching and microorganisms – bioleaching