Stirring device for molten metal

This stirring device (1), (10) for molten metal has a shaft (3) in the interior of which is provided a ventilation passage (4) through which a blown gas can pass, and a stirring blade (2) provided onan end of the shaft (3). The shaft (3) is formed as a separate member from the stirring blade (2) or is formed so as to be capable of being separated into two or more parts in a direction intersectingthe direction along the ventilation passage (4). At the boundary portion between the shaft (3) and the stirring blade (2) the shaft (3) and the stirring blade (2) are connected in a manner such thatno gap communicating with the exterior of the stirring device exists therebetween. Preferably the shaft (3), the stirring blade (2), and a ceramic material are a silicon nitride ceramic. 本发明的金属熔液用搅拌体(1)、(10)具有在内部设置有能够流通吹入气体的通气路(4)的轴(3)和配设在轴(3)的端部的搅拌翼(2)，轴(3)与搅拌翼(2)被形成为不同的部件，或者被形成为能够在与沿着通气路(4)的方向交叉的方向上分割成两个以上，在轴(3)与搅拌翼(2)的边界部处轴(3)和搅拌翼(2)以在两者之间不存在与上述搅拌体的外部连通的间隙的状态连续。轴(3)、搅拌翼(2)和陶瓷材料均优选为氮化硅系陶瓷。