氧枪座布置对大型铜熔炼底吹炉流动特性的影响
Effect of oxygen lance seat arrangement on flow characteristics of large-scale copper smelting bottom-blown furnace
郭学益 1姜保成 1陈俊华 2王亲猛1
作者信息
- 1. School of Metallurgy and Environment,Central South University,Changsha 410083,China
- 2. Henan Zhongyuan Gold Smelter Co.,Ltd.,Sanmenxia 472000,China
- 折叠
摘要
大型铜熔炼底吹炉在现代铜冶炼工业中发挥重要作用,相较中小型底吹炉其氧枪特征发生较大改变.以氧枪座为喷吹单元的气动搅拌已成为炉内扰动源,氧枪座布置情况直接影响大型底吹炉的熔炼效果.本文以某冶炼厂的大型底吹炉为研究对象,建立以枪座为基础的局部模型,通过CFD数值模拟分析了两个氧枪座参数,即枪座角度和两枪间距,对熔池流动特性的影响.结果表明:枪座角度和两枪间距分别对气泡上浮路径和有效搅拌区范围有显著影响,适当减小枪座角度将延长气泡上浮的运动空间,适当增大两枪间距将弱化有效搅拌区重叠.旋转炉体或重新设置氧枪是值得推荐的,有利于强化大型底吹炉熔炼过程.
Abstract
Large-scale copper smelting bottom-blown furnace(BBF)plays an important role in the modern copper smelting industry.Compared with small and medium-sized BBFs,the characteristics of oxygen lances have changed greatly.Pneumatic mixing with the oxygen lance seat as a blowing unit has become a disturbance source in the furnace.The arrangement of the oxygen lance seat directly affects the smelting effect of large-scale BBF.This paper takes a large BBF in a smelter as the research object,establishes a local model based on the lance seat,and analyzes the influence of two oxygen lance seat parameters on the flow characteristics of the molten pool through computational fluid dynamics(CFD)numerical simulation.The results show that the lance seat angle and the distance between two oxygen lances have significant effects on the bubble floating path and the effective mixing zone range,respectively.Reducing the lance seat angle appropriately will extend the bubble floating movement space,and increasing the distance between two lances appropriately will weaken the overlap of the effective mixing zone.Rotating the furnace body or resetting oxygen lances is recommended,which is conducive to strengthening the smelting process of large BBF.
关键词
铜冶炼/大型底吹炉/氧枪座/VOF模型/流动特性Key words
copper smelting/large bottom-blown furnace/oxygen lance seat/VOF model/flow characteristics引用本文复制引用
基金项目
National Natural Science Foundation of China(U20A20273)
National Natural Science Foundation of China(51904351)
Hunan Provincial Natural Science Foundation of China(2022JJ10078)
Science and Technology Innovation Program of Hunan Province,China(2021RC3005)
Innovation Driven Program of Central South University,China(2020CX028)
出版年
2023
NETL
NSTL
维普
万方数据