Novel oxygen lance set for metallurgical furnace

The utility model discloses a novel oxygen lance set for a metallurgical furnace, and belongs to the technical field of metallurgy. The oxygen lance comprises a first flange seat, a penetrating pipe, a connecting pipe, a second flange seat, an oxygen lance outer pipe, a connecting cover, a lance core, a pull rod, a rammer and a fixed end, the oxygen lance outer pipe is arranged at the front end of the penetrating pipe, the lance core penetrates through the penetrating pipe and is in transition connection with the oxygen lance outer pipe, and the first flange seat is connected to the rear portion of the lance core in a sleeved mode; a connecting pipe is arranged on one side of the penetrating pipe, a second flange base is arranged at the end, away from the penetrating pipe, of the connecting pipe, and a connecting cover is arranged at the front end of the oxygen lance outer pipe. When the gun core is disassembled, the first flange base is disassembled, the rear end of the gun core is in threaded connection wit