多枪顶吹连续吹炼炉氧枪参数优化数值模拟研究  

Numerical Investigation on the Optimization of Oxygen Lance Parameters in Multi-lance Top-blown Continuous Converting Furnace

作　　者：于海波[1,2] 罗劲松 邓戈[1,2] 朱鹏春 胡一平[1,2] 黄浩宸 李文杰 王仕博[2] 胡建杭 YU Haibo;LUO Jinsong;DENG Ge;ZHU Pengchun;HU Yiping;HUANG Haochen;LI Wenjie;WANG Shibo;HU Jianhang(Southwest Copper Branch,Yunnan Copper Co.,Ltd.,Kunming 650101,China;School of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;China Copper Southeast Copper Co.,Ltd.,Ningde 352106,China)

机构地区：[1]云南铜业股份有限公司西南分公司,云南昆明650101 [2]昆明理工大学冶金与能源工程学院,云南昆明650093 [3]中铜东南铜业有限公司,福建宁德352106

出　　处：《绿色矿冶》2024年第5期45-52,共8页Sustainable Mining and Metallurgy

基　　金：云南省重大科技专项计划(202302AB080017)。

摘　　要：随着铜冶炼技术的快速发展,多枪顶吹连续吹炼技术被应用和逐渐推广。采用计算流体学方法对吹炼炉内气-渣-粗铜三相混合特性进行了数值模拟,研究了炉型、喷枪数量、枪位、氧枪直径和喷枪间距对炉内搅拌强度和搅拌死区的影响。研究表明,椭圆形炉体熔池流动死区和相对静态区域相较于圆形炉体分别缩小了17.1%和27.8%;喷枪数量由6支增加至8支时,炉内搅拌死区由90.6%降低至63.7%;枪位由0.3 m降低至0.2 m时,搅拌死区占比由63.7%降低至34.7%;氧枪直径76 mm/氧枪间距600 mm工况条件下,顶吹炉具有较好的搅动能力和较低的喷溅强度,过大的氧枪直径和氧枪间距会提升熔渣的喷溅强度,不利于工业实际生产。With the rapid development of copper smelting technology,multi-lance top-blown continuous converting approach is applied and gradually extended.Numerical simulation of gas-copper slag-blister copper three-phase mixing characteristics in the furnace was carried out by means of computational fluid dynamics.The influence of the furnace shape,as well as the number,position,diameter and spacing of the multi-lance,on the mixing intensity and stirring dead zone in the furnace were investigated.The results demonstrate that stirring dead zone and relative static region of the bath in furnace with an elliptical cross-section are reduced by 17.1%and 27.8%,respectively,compared to a furnace with a circular cross-section.The stirring dead zone in the furnace is reduced from 90.6%to 63.7%as the lance number is increased from 6 to 8.The dead zone is reduced from 63.7%to 34.7%when the lance position is reduced from 0.3 m to 0.2 m.The case with lance diameter of 76 mm and lance spacing of 600 mm have high stirring capacity of jet and low splashing intensity of molten.If lance diameter and spacing are too large,the slag splashing intensity is enhanced,which is not favorable to industrial production.

关 键 词：铜冶炼 多枪顶吹连续吹炼 氧枪 火法冶炼 CFD 

分 类 号：TF8[冶金工程—有色金属冶金]