| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for intensification of melting in arc steel furnace. Device comprises a combined tuyere-burner and a copper water-cooled housing in form of a prism with rectangular cross-section with a through longitudinal hole in middle section of prism, in which is inserted a combined tuyere-burner, and on periphery of cross-section of prism in housing there are channels for water cooling and a flange for its fixation on casing of furnace. In copper water-cooled housing, water cooling channels are made in form of longitudinal drill holes, into which are inserted pipes with clearance, wherein flow sections of drill holes and pipes are connected to each other. Ratio of total area of water-cooled surface of drill holes for passage of water to area of heat-absorbing outer surface of housing is equal to 0.4-0.82. Width of gap between walls of drill holes and outer wall of pipes is 0.1-0.3 of outer diameter of pipes.EFFECT: invention improves cooling efficiency of device for intensification of melting in arc steel melting furnace and improves its resistance.3 cl, 6 dwg |
