Quickly-connected and safely-used oxygen lance

• Main Authors: HU ZHILONG, WANG TAO, TAN KAIWEI, GUO JIAN'GAO, TIAN QUANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2014
• Subjects: CHEMISTRY; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON

The utility model discloses a quickly-connected and safely-used oxygen lance and belongs to the technical field of blast furnace oxygen lances. The quickly-connected and safely-used oxygen lance is used for eroding iron slag at an iron notch and a tuyere of a blast furnace. According to the technical scheme, the rear part of an oxygen burner is inserted from the front end of a sheath through hole; an internal thread is formed on the rear part of the sheath through hole; the front part of the oxygen burner is inserted into the sheath through hole from the rear end of the sheath through hole; an external thread is formed on the middle part of an oxygen nozzle and is matched with the internal thread on the rear part of a sheath; an internal thread is formed on the rear part of the oxygen nozzle; the front end of an oxygen pipe is in threaded connection with the rear part of the oxygen nozzle; the rear end of the oxygen pipe is connected with a lock nut; the lock nut is welded to the front end of an oxygen connec