Wang Lei, Zhang Yuxiu, Zhang Peibin, Liu Xiangang, Lu Min, Zhang Yuqiu, Gao Haibo, Liu Yongqi, Wang Yanxia
Shandong Province New Energy Vehicle Integrated Design and Intelligent Key Laboratory, Shandong University of Technology, Zibo, Shandong, 255049, PR China.
Shandong Province New Energy Vehicle Integrated Design and Intelligent Key Laboratory, Shandong University of Technology, Zibo, Shandong, 255049, PR China; Shandong Linglong Tire Company Limited, Yantai, Shandong, 265400, PR China.
J Environ Manage. 2025 Aug;389:126071. doi: 10.1016/j.jenvman.2025.126071. Epub 2025 Jun 2.
In order to make proper use of industrial waste for environmental protection and energy conservation, the atomized water granulation method was proposed for the waste heat recovery of blast furnace slag. The selection of atomized water parameters significantly impacts the waste heat recovery efficiency of blast furnace slag particles Therefore, this study employs Computational Fluid Dynamics (CFD) to investigate the solidification and cooling process of individual blast furnace slag particles, with particular focus on the effects of varying atomized water velocities on the temperature field, liquid phase distribution, and velocity field of blast furnace slag droplets. The results indicate that the temperature field of blast furnace slag particle shows the distribution law of high inside and low outside, the temperature drop rate on windward side is greater than the leeward side. During the cooling process, the outer layer of blast furnace slag is first cooled to solid phase, and the maximum velocity of atomized water occurs on both sides of the blast furnace slag. With the increase of atomized water velocity, the temperature drop rate and solidification rate of the blast furnace slag are accelerated, the recirculation flow on the leeward side of the blast furnace slag enhances local heat transfer. When the atomized water velocity is greater than 5 m/s, the blast furnace slag particles have a tendency to deform.
为了合理利用工业废弃物以实现环境保护和节能，提出了雾化水造粒法用于高炉矿渣余热回收。雾化水参数的选择对高炉矿渣颗粒的余热回收效率有显著影响。因此，本研究采用计算流体动力学（CFD）来研究单个高炉矿渣颗粒的凝固和冷却过程，特别关注不同雾化水速度对高炉矿渣液滴温度场、液相分布和速度场的影响。结果表明，高炉矿渣颗粒的温度场呈现内高外低的分布规律，迎风面的降温速率大于背风面。在冷却过程中，高炉矿渣外层先冷却至固相，雾化水的最大速度出现在高炉矿渣两侧。随着雾化水速度的增加，高炉矿渣的降温速率和凝固速率加快，高炉矿渣背风侧的回流增强了局部传热。当雾化水速度大于5m/s时，高炉矿渣颗粒有变形的趋势。
