Model Study on Shaking Ladle
1986 年 26 巻 2 号 p. 139-144
詳細
1986 年 26 巻 2 号 p. 139-144
This paper deals with the behavior of liquid in the shaking ladle as revealed in model experimental study. A series of experiments have been made by the use of four size models with different liquids, by varying eccentricity, rotational speed and the amount of charge. Four critical states of liquid motion in the shaking ladle have been discovered; oscillatory motion, the 1st and 2nd monobreaker wave motions, multiple breaker motion and rotational paraboloid motion. The 2nd and the multiple breaker wave motions as well as the rotational paraboloid critical states are o f practical importance to metallurgical production. The stirring action strongly promotes the chemical reaction in the liquid bath. Some empirical formulas for calculating these critical rotational speeds have been established from experiments. The results obtained by the use of a 10-ton commercial shaking ladle with liquid iron at above 1200°C, are in good agreement with those of laboratory scale investigations. Consequently, optimal shaking parameters have been proposed for production operation.
