Blow cartridge used to blow a gas into a high temperature liquid, gas discharge assembly and gas blow nozzle using the same, gas blow device and metal pouring device

摘要

For injecting gas into a liquid, more particularly a molten metal, a nozzle body (24) is installed in the wall of a liquid-containment vessel, the body (24) having a nozzle passage (25) therethrough. Liquid and gas tightly fitted in a downstream end of the passage is a solid, gas porous plug (18) having capillary gas passages (20). Upstream of the plug (18) the passage has a gas-porous and liquid-impermeable cartridge (10) closely fitted therein which prevents liquid which may conceivably pass through the plug (18) from leaking out of the passage (25). The cartridge (10) has a gas impermeable metal sleeve (11) containing a particulate material (16) such as sand which is retained in the sleeve (11) by wads (14, 15) of fibrous material at the ends of the sleeve.