富氧浓度对铜冶炼底吹吹炼的影响  

Influence of enriched oxygen concentration on bottom blowing in copper smelting

作　　者：张理勤 俞伟 黄进 王晓春 谢云 杨俊奎 ZHANG Li-qin;YU Wei;HUANG Jin;WANG Xiao-chun;XIE Yun;YANG Jun-kui

机构地区：[1]青海铜业有限责任公司,青海西宁810000

出　　处：《中国有色冶金》2021年第3期34-38,共5页China Nonferrous Metallurgy

基　　金：青海省重大科技专项(2018-GX-A7)。

摘　　要：铜锍底吹吹炼技术已成为目前铜冶炼的一种发展趋势,冶炼工艺有全热料、冷热混合料和全冷料之分,不同的原料炉内热平衡不同,入炉气体的富氧浓度也不一样。青海铜业有限责任公司是国内第一家采用全冷料连续吹炼造铜工艺的冶炼企业,本文以该公司生产实践数据为基础分析富氧浓度对铜冶炼底吹吹炼的影响。结果表明:提高单只氧枪的有效通量、减少氧枪使用数量、控制富氧浓度36%~38%,是延长氧枪寿命、缩短停炉更换氧枪时间的重要措施;通过合理的富氧浓度可控制合适的三相厚度,确保吹炼炉各项生产指标合格;建议冷态铜锍吹炼、热态铜锍吹炼、冷热态铜锍混合吹炼分别对应的富氧浓度为36%~38%、28%~32%、31%~34%。Copper matte bottom blowing technology has become a current development trendin copper smelting industry. The smelting process is divided into fully hot material,cold and hot mixture materialand fully cold material.The heat balance in the furnace is different for different raw materials,and the oxygen concentration ofthe gas entering the furnace is different. Qinghai Copper Industry Co.,Ltd. is the first domestic smelting company that adopts continuous blowing process treating the full-cooled raw material for copper production. This article analyzes the influence of oxygen concentration on the bottom blowing of copper smelting based on the company’s production practice. The results show that increasing the effective flux of a single oxygen lance,reducing the number of oxygen lances,and controlling the oxygen concentration of 36% to 38% are important measures to prolong the life of the oxygen lance and shorten the time for shutting down and replacing the oxygen lance;a reasonable oxygen concentration should be used to control the appropriate three-phase thickness to ensure that all production indicators of the converting furnace. It is recommended that the oxygen-enriched concentration corresponding to cold copper matte blowing,hot copper matte blowing,and cold and hot copper matte mixed blowing is 36% ~ 38%,28% ~ 32%,31% ~ 34%.

关 键 词：铜锍底吹吹炼 富氧浓度 入炉原料 氧枪数量 有效通量 热平衡 氧枪寿命 三相厚度 

分 类 号：TF811[冶金工程—有色金属冶金] TF803.11