Processes and apparatus for reducing and subsequently pelletizing moist fine-grained ore

摘要

Processes and apparatus for reducing and pelletizing moist fine-grained ore having zinc-and/or lead-containing impurities and wherein preheated ore is discharged to a rotary furnace in which the zinc and/or lead is separated from the ore and discharged from the furnace with its exhaust gases. The zinc and/or lead is separated from the exhaust gases and the thus purified gases dry the ore prior to the preheating thereof.