The world modern mineral processing trends in the reconstruction of Sasa lead-zinc concentrator – M. Kamenica, R. of Macedonia

The Sasa lead-zinc mine, with increasing annual production and ore processing capacity of 0,92M tones, given in the "Business plan for restarting" (according to the program and the planned total investments from US $ 26,4M, for the modernization of the mine and the reconstruction of the concentrator), foresees a production of the largest quantities of concentrates with lead metals in Europe. According to the planed reconstruction of the concentrator of the Sasa Mine, foresees the following world modern processing trends: A.- Primary crushing and SAG-Mill grinding process, replacing the existing primary, secondary and tertiary crushing process; B.- One parallel stage ball mill grinding process, replacing the existing two serial stages rod mill and ball mills grinding process; C.- Alternative Flow-sheet for a selective lead and zinc, selective lead - collective lead-zinc, and collective lead- zinc flotation (neded for ISP-imperial smelting process); D.- Regrinding process, additional grinding ; E.- PSM-control, ISA-analysis and sampling systems, pH-control with auto process distribution of the lime milk and flotation reagents; F.- Pressure filtration process for the selective lead, selective zinc or collective lead-zinc concentrate