| 摘要 |
The present invention concerns a device (1), for example a gas purging plug, for blowing gas into a metallurgical vessel comprising (a) a body (2) extending along a central axis (X1) comprising, (b) at least one gas flow channel (3) fluidly connecting a gas inlet (3a) located at one end of said body to a gas outlet (3b), located at the opposite end along said axis, said channel (3) being in the shape of a slit defined by a first and second opposed surfaces. The device (1) according to the invention is characterized in that, (c) the at least one gas channel (3) comprises a series of continuous concave bridges (4) connecting the first and second opposing surfaces defining the channel, with their concave side (4a) oriented towards the gas outlet (3b), wherein said concave bridges (4) are disposed in a staggered arrangement, such that any first shortest line running from the gas outlet (3b) to the gas inlet (3a) of the channel necessarily intercepts the concave side (4a) of at least one first bridge (41). The device (1) according to the invention permits to prevent clogging of device by infiltrated molten metal or slag. |
