Abstract: In view of the large amount of heat in the zinc-containing scrap after dezincification, three-dimensional heat transfer numerical simulation of the initial packing temperature and stacking time of the hot scrap briquette was carried out with FLUENT software, and the effect of the initial temperature and cooling time on the residual heat in the hot scrap was studied. The results show that the higher the initial temperature of the briquette, the faster the heat dissipation is. When the initial temperature is 1 000, 900, 800, 700, 600℃ for 24 h of cooling, the corresponding temperature of the briquette decreases by 61, 60, 47, 41, 35℃, respectively; The multi-layer insulation stacking method within 24 h can effectively store the heat of the scrap steel briquette, and the heat insulation effect is good. The remaining heat of the briquette at cooling 3, 6, 12, 24 h is 623.27, 618.85, 611.16, 598.73 MJ/t, respectively, and 95% of the heat remains after 24 h.