摘要
铜富氧底吹熔炼作为先进的铜冶炼技术被广泛应用,针对国内单体最大铜底吹熔炼炉存在的熔炼效率低、渣含铜过高的问题,进行了底吹炉内气-锍-渣多相流场的三维数值模拟研究。以改善熔池搅拌、降低渣含铜为目标,对氧枪数量、熔池深度进行了优化。结果表明,改变靠近排渣端氧枪数量对延长澄清区长度、降低渣含铜具有显著的积极影响。关闭2支氧枪后,渣-锍澄清区相较于原工况延长了27.425%(0.925m),关闭4支氧枪后,渣-锍澄清区延长了50.165%(1.695m)。根据熔池搅拌区气含率和搅拌均匀性,得出熔池较优的深度范围为1.5~1.7m。
As a modern copper smelting process,oxygen enriched bottom blown smelting technique has been widely used in China.3 Dnumerical simulations were performed focusing on problems of low smelting efficiency and high copper loss in slag in largest bottom-blown copper smelting furnace.With goal of improving smelting bath stirring and reducing copper loss in slag,oxygen lance quantity and smelting bath depth were optimized.The results show that changing number of oxygen lances near the slag outlet has a significant positive effect on increasing length of clarification zone and reducing copper loss in slag.After closing two oxygen lances,slag-matte clarification zone extends by 27.425% and 0.925 mcompared with the original condition,while slag-matte clarification zone extends by 50.165% and 1.695 mafter closing four oxygen lances.According to gas holdup in stirring zone of smelting bath and stirring effect,the suitable depth range of smelting bath is 1.5 mto 1.7 m.
作者
穆亮照
赵洪亮
王正
刘风琴
MU Liang-zhao;ZHAO Hong-liang;WANG Zheng;LIU Feng-qin(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2021年第1期1-9,共9页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51974018)
中央高校基本科研业务费专项资金项目(FRF-TP-19-016A3)。
关键词
铜
底吹熔炼
渣含铜
多相流
数值模拟
熔池深度
copper
bottom blown smelting
copper loss in slag
multiphase flow
numerical simulation
smelting bath depth
