Figure 8
Collision rate of particles in Al-Ca deoxidation steel. (a) Experimental change rate of number density is obtained by measuring the total number of particles in Fe-O-Al-Ca melts with holding time and plotted against calculated collision rate of particles based on population balance model; (b) collision frequency for particles as a function of maximum size of particle in Fe-O-Al-Ca melts during deoxidation process based on Eq. (3); (c) Collision rate of particles with different size in melts with 0.05% Al addition after deoxidation for 3900 s; (d) Collision rate of particles with different size in melts with 0.25% Al addition after deoxidation for 3900 s, (e) Relationship between arithmetic mean diameter of particles with Dp value and Dp value is the size of particles corresponding to the peak value of curves in Fig. 6c,d.
