| 摘要 |
<p>A pyrometallurgical process for zinc recovery from finely divided flue dust, or the like, involves the use of a high temperature reaction chamber 2 in which zinc oxide is reduced and zinc volatilised. A lance 1 is used to inject oxygen or oxygen-enriched air together with fuel into the reaction chamber, thereby enhancing mass transfer at a gas/slag interface within the chamber. Resulting zinc vapour may be collected as zinc metal by use of a lead/zinc splash condenser 7 and liquator, or as zinc oxide by reoxidation and use of a bag filter. <IMAGE></p> |
