Abstract：In order to improve the dry granulation effect of blast furnace slag,and determine an appropriate granulation process,the characteristics and mechanism of different granulation methods were compared by means of dry granulation tests of the blast furnace slag. The results show that the form of granulated slag particles changes to needle-like and filamentous with the increasing of the air flow rate,and the traditional air-blow quenching technique cannot obtain the ideal granulation particles in size and form. In addition,adopting the air-water mixing quenching method can improve the granulation effect under a relatively small air volume,and the filamentous slag can be avoided,which can be regarded as the development direction of the air-blow quenching method. The mechanical granulation effect is better than that of air-blow quenching,and the optimal granulation as well as vitrification effect can be obtained in the combination of mechanical and air-blow quenching granulation.
张俊, 严定鎏, 万新宇, 高建军. 高炉渣不同干法粒化工艺的对比试验[J]. 钢铁, 2020, 55(2): 139-143.
ZHANG Jun, YAN Ding-liu, WAN Xin-yu, GAO Jian-jun. Comparative test on different dry granulation methods of blast furnace slag. Iron and Steel, 2020, 55(2): 139-143.
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2020, Vol. 55 
