Abstract: A process and apparatus for absorbing zinc vapour in a molten lead is characterized in that a gas containing zinc vapour is contacted with and then separated form a flowing stream of molten lead in a cyclone.

Abstract: A method and apparatus for recovering primary metals from pyrometallurgical process dust, in which a vertical shaft retort, situated in a furnace or afterburner associated with a pyrometallurgical apparatus, such as an inclined rotary reduction smelter, and preferably having a tapered cross-section with the larger end at the bottom, receives greenball pellets from a pelletizer, vaporizes volatile metal metals therein, and removes them to an associated volatile metal recovery apparatus, while reducing and recovering the major metal oxide components in the pellets in metallized form.

Abstract: A lead-splash condenser for condensing metal vapor from a hot gas stream, comprising a plurality of condensation chambers, spray generating means provided in each condensation chamber, an inlet for passage of a hot gas containing metal vapor to the first condensation chamber, an outlet for passage of the gas from the last condensation chamber, and a stack communicating with the outlet of the last condensation chamber, wherein the stack is provided with gas deflector means for deflecting the gas stream from the side wall of the stack facing the outlet of the last condensation chamber so as to obtain a more uniform gas distribution in the stack, and to thereby reduce the rate of droplet elutriation in the gas stream leaving the condenser.