Patent ID: 6245285
Filing Date: 2001-06-12
Classification: C21C,F27D

Abstract:
A lance for injecting a feed material into a metallurgical vessel, the lance comprising:i. an inlet for introducing the feed material into the lance;ii. an outlet at a forward end of the lance for discharging the feed material from the lance;iii. an outer cooling jacket extending to the forward end of the lance;iv. a hollow elongate member that defines a passageway for the feed material between the inlet and the outlet and including at least two cooling fluid passageways for a first cooling fluid, each cooling fluid passageway having an inlet for the first cooling fluid and an outlet for discharging the first cooling fluid at the forward end of the lance, and one of the cooling fluid passageways being in the form of an annular gap between an outer wall of the member and an inner wall of the outer jacket, and wherein the member extends beyond the outer jacket at the forward end of the lance; andv. means for supporting the member so that the member can move relative to the outer jacket in a lengthwise direction of the lance.