Change in technological properties of technogenic sulfide-contained raw material in the storage process

Results of modeling of changes in technological properties of sulfide miner als (pyrrhotite, pentlandite, and chalcopyrite) present in mining-industria l wastes stored in a climate in which evaporation prevails over precipitati on are reported. It is proved that flotation activity of chalcopyrite and, in particular, of pentlandite diminishes, pyrrhotite increases, and selecti vity and flotation of combined sulfides with respect to other minerals incr eases insignificantly. The content of water-soluble salts, dominated by nic kel sulfates, increases with storage time.