| 摘要 |
<p>Direct smelting plant for producing molten metal from a metalliferous feed material induces a smelting vessel (11) to hold a molten metal and slag bath beneath a hot gas space. Solids injection lances (27) extend downwardly and inwardly through side walls of the vessel and hot oxidising gas is directed downwardly into the gas space by a central vertical gas injection lance (26). The plant layout is divided into four functional zones spaced circumferentially around vessel (11) and radiating outwardly from the vessel. Zone 1 contains an overhead hot gas delivery duct (31) supplying gas to lance (26) and an offgas duct (32); Zone 2 contains a forehearth (19) and forehearth tapping launder (34); zone 3 contains slag notches (45) and slag launders (46); and Zone 4 contains a primary slag drain taphole and launder (48). This layout minimises the potential for interference between the transport of the hot gases, the metalliferous feed material, and the molten metal and slag. <IMAGE></p> |
