摘要
奥斯麦特炉(Ausmelt)熔池熔炼受输入原料、结焦脱落等动态变化因素的影响,炉内熔池温度、冰铜品位和炉渣渣型易发生变化,若炉况调整不及时易造成炉内结壳,严重时甚至会出现死炉。鉴于此,探索了依靠激光诱导击穿光谱(LIBS)技术快速对冰铜和炉渣完成在线成分检测,然后将检测数据人工传输到Metcal冶金数模软件中反馈指导生产的可行性,并就奥斯麦特炉用氧量指标进行仿真及实践效果比对。通过LIBS熔体在线检测设备的长期运行实践,验证了其检测的可靠性和准确性,以X射线荧光光谱仪(XRF)检测结果为基准的LIBS熔体检测偏差在±1.0%以内的为96.2%,固体检测偏差在±1.0%以内的为81.7%,基本可实现以LIBS取代XRF检测。基于高实时性在线检测结果,随机抽取15炉次奥炉平均实际用氧量与LIBS指导数模用氧量,可见偏差由7.65%降低至2.77%,达到了精准调控炉况控制参数的效果,为奥炉稳定生产和节能降耗提供了重要保障。
Under the influence of dynamic factors such as belt input raw materials and coke falling off,the melting pool temperature,matte grade and slag type in the furnace are prone to change rapidly.If the furnace condition is not adjusted in time,it is easy to cause crust in the furnace,and even dead furnace may occur in serious cases.In view of this,the feasibility of rapid on-line composition detec‐tion of matte and slag by laser induced breakdown spectroscopy(LIBS)is explored,and then the detection data is manually transmitted to Metcal metallurgical digital simulation software for feedback and guidance of production.Through the long-term operation practice of the LIBS melt online detection equipment,the reliability and accuracy of its detection are verified.Based on the X-ray fluorescence spectrometer(XRF)detection results,the detection deviation of LIBS melt is±1.0%to 96.2%,and the solid detection deviation is±1.0%to 81.7%.Basically,it can be realized that LIBS can replace XRF detection.Based on the high real-time online testing results,the deviation between the average actual oxygen consumption of 15 furnaces and the LIBS guidance digital oxygen consumption was re‐duced from 7.65%to 2.77%,so as to accurately regulate the furnace condition control parameters,providing an important guarantee for the stable production and energy saving of furnaces.
作者
张磊
潘从元
汪勇
ZHANG Lei;PAN Congyuan;WANG Yong(Tongling Nonferrous Metals Group Co.,Ltd.,Tongling 244000,China;Hefei Gold Star Intelligent Control Technical Co.,Ltd.,Hefei 230088,China)
出处
《铜业工程》
CAS
2023年第6期181-188,共8页
Copper Engineering
