Apparatus for spraying an air-water mist cooling for use in continuous metal casting

An apparatus for spraying an air-water mist for cooling a cast strand in continuous metal casting in which a mist atomizing nozzle is utilized which is attached to a head portion of an air-water mixture supply pipe, said apparatus comprising:

• exhaust means formed in an exhaust side wall of said mist atomizing nozzle;
• and
• introduction inlet means provided in an introduction side wall at a height position different from that of said exhaust means wherein a distance l between a central axis of said introduction inlet means and a central line passing through a midpoint of said exhaust means parallel to said central axis is set at a predetermined value so as to satisfy the following relation,
• 1/2d<l.ltoreq.2.5D
• wherein d is an inside diameter of the introduction inlet means and D is a distance from the introduction side wall of said mist atomizing nozzle to the exhaust side wall.