Numerical simulation on centrifugal granulation of industrial molten slag
Aiming at the centrifugal granulation process of molten slag,the three-dimensional transient simulation of gas-liquid two-phase flow in the granulator was carried out by the VOF method.A comparative analysis was conducted on the characteristics of liquid filaments and droplets generated by copper slag and blast furnace slag at different rotational speeds.The results show that the breakup wavelength,the tip diameter,the ratio of breakup wavelength to tip diameter,and the breakup length of blast furnace slag are greater than those of copper slag at the same rotational speed;the ratio of breakup wavelength to tip diameter of the same slag tends to be consistent at different rotational speeds,and the ratio of breakup length to tip diameter is similar to the conclusion of Weber's research;the droplet sizes of copper slag and blast furnace slag decrease with the increase of rotational speed.Compared with blast furnace slag,a large number of smaller droplets can be obtained in the process of copper slag granulation; with the increase of rotational speed,the average droplet size of copper slag barely changes,which is more conducive to the recovery of waste heat from high-temperature droplets.
万方数据
维普
