| 摘要 |
The invention relates to ferrous metallurgy. A blowing lance of a blast furnace comprises a case as internal and external cone shells, nose part, a flange with tubes installed at the end surface of the large diameter shells, wherein pipes supply and discharge water for lance cooling, and tube for gas supply, at that in addition it has a collector, made as а ring box, with II-shaped cross section, fixed on internal shell lance to which external wall the tube for gas supply is pencilled, and holes is made at internal shell in the area of the symmetry axis of the box, the total area of its cross sections is equal to the area of cross section of the hole of a tube for gas supply. Offered blowing lance of the blast furnace provides the most complete intermix gas with air and full burning of an air-gas mix. |
