Numerical investigation of sinusoidal pulsating gas intake to intensify the gas-slag momentum transfer in the top-blown smelting furnace

作     者：Zhanghao Wan Shiliang Yang Desong Kong Dongbo Li Jianhang Hu Hua Wang Zhanghao Wan;Shiliang Yang;Desong Kong;Dongbo Li;Jianhang Hu;Hua Wang

作者机构：State Key Laboratory of Complex Nonferrous Metal Resources Clean UtilizationKunming University of Science and TechnologyKunming 650093China Southwest Copper BranchYunnan Copper Co.Ltd.Kunming 650102China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2024年第31卷第2期

页      面：301-314页

核心收录：

学科分类：0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Applied Basic Research Project of Yunnan Province China(No.202301 AT070411). 

主　　题：top-blown smelting furnace pulsed flow volume of fluid penetration depth splashing volume 

摘      要：The variation characteristics of bubble morphology and the thermal-physical properties of bubble boundary in the top-blown smelting furnace were explored by means of the computational fluid dynamics method.The essential aspects of the fluid phase(e.g.,splashing volume,dead zone of copper slag,and gas penetration depth)were explored together with the effect of sinusoidal pulsating gas intake on the momentum-transfer performance between phases.The results illustrated that two relatively larger vortices and two smaller vortices appear in the bubble waist and below the lance,respectively.The expansion of larger ones as well as the shrinking of smaller ones combine to cause the contraction of the bubble waist.Compared to the results of the case with a fixed gas injection velocity(V_(g)=58 m/s),the splashing volume and dead zone volume of the slag under the V_(g)=58+10sin(2πt)condition are reduced by 24.9%and 23.5%,respectively,where t represents the instant time.Gas penetration depth and slag motion velocity of the latter are 1.03 and 1.31 times high-er than those of the former,respectively.