Patent ID: 6440355
Filing Date: 2002-08-27
Classification: C21C

Abstract:
A BOF lance crane assembly, comprising:a) a crane structure moveable to an operating position above a BOF vessel, and moveable to a non-operating position away from the BOF vessel; b) a lance carriage adapted to travel along a length of said crane structure so that a lance attached thereto may be inserted into or removed from said BOF vessel in response to said lance carriage travel; and c) a measuring device positioned to take measurements to a target area within said BOF vessel, said measuring device including; i) an optical head positioned to direct an energy beam to the target area, and to direct a reflected energy beam to a processor; and ii) a housing adapted to contain said optical head, said housing including a movable cover that is selectively operated to an open position to expose said optical head to the target area, and selectively operated to a closed position so that said optical head is fully enclosed within said housing and shielded from exposure to the target area.