Abstract The invention relates to a nozzle-head for a water-cooled blowing lance comprising at least one outlet opening for a gaseous refining agent and, if desired, fine-grained fluxes, an inlet piece, at least one nozzle tube leading through a watercooled space and a front plate to which the at least one nozzle tube is connected, in which the improvement resides in that both the inlet piece and the front plate are provided with tubular projections which are connected with each other to form said nozzle tubes, the connection plane lying perpendicularly to the nozzle-head axis at a distance from the front plate amounting to about one-fourth to two-thirds of the height of the nozzle-head. The number of connecting seams corresponds to the number of nozzle tubes; the seams are far away from the front plate and thus sheltered from any danger to damage.
In a nozzle head for a water-cooled blowing lance, comprising at least one outlet opening for a gaseous refining agent, an inlet piece, at least one nozzle tube leading through a watercooled space, a front plate to which each said nozzle tube is connected, the front plate having ribs, a water deflecting body supported on the ribs of the front plate, said body being provided with recesses whose number and shape correspond to the number and shape of the nozzle tubes, the walls of said recesses surrounding the nozzle tubes for at least two-thirds of their circumference, thus forming continuous annular cooling-water canals, and the inlet piece and the front plate having tubular projections connected with each other to form said nozzle tube, the connection plane lying perpendicularly to the nozzle head axis at a distance from the front plate amounting to about onefourth to two-thirds of the height of the nozzle head.
Claim 2
Dependent Claim
153 words
In a nozzle head for a water-cooled blowing lance, comprising at least one outlet opening for a gaseous refining agent, an inlet piece, at least one nozzle tube leading through a watercooled space, a front plate to which each said nozzle tube is connected, the front plate having ribs, a water deflecting body supported on the ribs of the front plate, said body being provided with recesses whose number and shape correspond to the number and shape of the nozzle tubes, the walls of said recesses surrounding the nozzle tubes for at least two-thirds of their circumference, thus forming continuous annular cooling-water canals, and the inlet piece and the front plate having tubular projections connected with each other to form said nozzle tube, the connection plane lying perpendicularly to the nozzle head axis at a distance from the front plate amounting to about onefourth to two-thirds of the height of the nozzle head.
Claim 3
Dependent Claim
28 words
The nozzle-head set forth in claim 1, wherein the connection plane is at a distance from the front plate amounting to one-third of the height of the nozzle-head.