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 

机构地区：[1]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China [2]Southwest Copper Branch,Yunnan Copper Co.,Ltd.,Kunming 650102,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2024年第2期301-314,共14页矿物冶金与材料学报（英文版）

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

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.

关 键 词：top-blown smelting furnace pulsed flow volume of fluid penetration depth splashing volume 

分 类 号：TF06[冶金工程—冶金物理化学]