Effects of additional fuel on the melting process in the Vanyukov furnace

Due to the change in composition of processed raw materials at Balkhash Copper Plant (BCP), it is required adjust technology used melt copper sulfide concentrates Vanyukov furnace (VF). It promising use additional carbon-containing fuel that burns bubbling zone increasing melting temperature and partially reducing slag oxides ensure autogenousity temperature. However, part solid does not burn with an oxygen-containing blast participate reduction reactions result its accumulation on surface melt. The results industrial tests performed earlier BCP feed coal dust through tuyeres VF purpose maintain satisfactory separation matte were considered. reasons for unstable operation tested system determined, directions improvement outlined. Laboratory experiments simulate behavior quiet VF. regularities distribution was shown concentrated surface. Thus, did react oxygen or carried melt, promoted formation a viscous crust, then practically interact becomes useless.