Technological Resources Pty. Limited

Tata Steel Limited

Barry Alan Cady

Trevor Williams

An apparatus for injecting gas into a vessel is disclosed. The apparatus comprises a gas flow duct from which to discharge gas from the duct, an elongate central structure extending within the gas flow duct, and a plurality of flow directing vanes disposed about the central structure adjacent the forward end of the duct to impart swirl to a gas flow through the forward end of the duct. The apparatus also comprises cooling water flow passages in the vanes that have inlets at the forward ends of the vanes and outlets at the rear ends of the vanes.

Injecting gas into a vessel

An apparatus for injecting gas into a vessel is disclosed. The apparatus comprises a gas flow duct from which to discharge gas from the duct, an elongate central structure extending within the gas flow duct from its rear end to its forward end, and a plurality of flow directing vanes disposed about the central structure adjacent the forward end of the duct. The forward end of the central structure and the vanes are water cooled by separate supply passages.

Apparatus for injecting gas into a vessel

A metallurgical lance () to extend through an opening in the wall of a smelting vessel barrel () and into the interior space of the vessel. Lance () includes a central core tube () through which to pass solid particulate material into the vessel and an annular cooling jacket () surrounding the central core tube () throughout a substantial part of its length. Lance () has a mounting structure () comprising an outer annular part () extended about cooling jacket () and about twice the diameter of the cooling jacket. The outer annular part () fits within a tubular lance mounting bracket () welded to the shell () of vessel barrel () to extend outwardly from the vessel. The lance is held within mounting bracket () by clamping bolts acting between flanges () on the outer annular part () and mounting bracket (). The outer annular part () is double walled and the interior space between its walls is divided into water flow passages through which cooling water flows from a water inlet () to an outlet ().

Apparatus for injecting solid particulate material into a vessel

A smelting apparatus includes a vessel and a solids injection lance extending through an opening in the wall of a vessel barrel into the interior space of the vessel. The lance includes a central core tube through which to pass solid particulate material into the vessel and an annular cooling jacket surrounding the central core tube throughout a substantial part of its length. The lance has a mounting structure including a tubular part extended about the cooling jacket and about twice the diameter of the cooling jacket. The tubular part fits within a tubular lance mounting bracket welded to the shell of the vessel barrel to extend outwardly from the vessel. The lance is held within the mounting bracket by clamping bolts acting between flanges on the tubular part and the tubular bracket.

An apparatus for injecting gas into a vessel includes a gas flow duct which receives hot gas through a gas inlet structure at a rear end of the duct. The forward end of the duct has an annular duct with an internal cooling water passage. Cooling water supply and return passages are formed within the wall of the duct such that water flows to and from a tip through the supply and return passages. The tip includes a hollow shell and a partitioning structure that has a ring and a plurality of circumferential flanges that project outwardly from the ring to the shell to form a series of water flow galleries, each extending circumferentially around the tip and interconnected for flow of cooling water sequentially through the galleries from the water supply passages to the water return passage. The circumferential flanges also serve as buttress supports for the shell.

Smelting apparatus comprises a vessel () and a solids injection lance () extending through an opening in the wall of vessel barrel () into the interior space of the vessel. Lance () includes a central core tube () through which to pass solid particulate material into the vessel and an annular cooling jacket () surrounding the central core tube () throughout a substantial part of its length. Lance () has a mounting structure () comprising a tubular part () extended about cooling jacket () and about twice the diameter of the cooling jacket. Tubular part () fits within a tubular lance mounting bracket () welded to the shell () of vessel barrel () to extend outwardly from the vessel. The lance is held within mounting bracket () by clamping bolts acting between flanges () on tubular part () and tubular bracket (). Tubular part () is double walled and the interior space between its walls is divided into water flow passages through which cooling water flows from a water inlet () to an outlet ().

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Chelsea, Australia

Barry Alan Cady