| 摘要 |
PCT No. PCT/GB86/00073 Sec. 371 Date Sep. 16, 1986 Sec. 102(e) Date Sep. 16, 1986 PCT Filed Feb. 12, 1986 PCT Pub. No. WO86/04928 PCT Pub. Date Aug. 28, 1986.A cartridge-type injection device (20) is removably seated in a passage (18) through the wall of a ladle (10) and comprises a refractory nozzle tip (21) fitted to one end of a tubular body (30), and a delivery pipe (35) for gas or a mixture of gas and a particulate material, the pipe (35) entering an outer end of the body (30) and extending therethrough into the nozzle tip (21). An insulating packing is contained by the body around the pipe (35). The pipe is movable in the bore (22) of the tip (21) for dislodging a melt-obstructing plug in the bore (22) into the melt, whereupon the device is enabled to eject the gas or mixture from the pipe into the melt. |
