EB炉冷床内钛液流动、传热和挥发行为研究  

Study on Flow,Heat Transfer and Volatilization Behavior of Molten Titanium in Cold Hearth during EB Furnace Melting Process

作　　者：李阳 王力 王运 刘长东 蒲东德 Li Yang;Wang Li;Wang Yun;Liu Changdong;Pu Dongde(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,China;Pangang Group(Panzhihua)Titanium Metal Materials Co.,Ltd.,Panzhihua 617000,China;Pangang Group Xichang Steel and Vanadium Co.,Ltd.,Xichang 615000,China)

机构地区：[1]钒钛资源综合利用国家重点实验室,四川攀枝花617000 [2]攀钢集团(攀枝花)钛金属材料有限公司,四川攀枝花617000 [3]攀钢集团西昌钢钒有限公司,四川西昌615000

出　　处：《钛工业进展》2023年第4期6-12,共7页Titanium Industry Progress

摘　　要：基于国内某企业3200 kW的双流C型电子束冷床炉(EB炉),建立了钛液流动-传热-凝固-挥发的多场耦合数学模型,理论分析了不同熔炼工艺下初炼和精炼冷床内钛液的冶金行为。结果表明:稳定熔炼过程中,热辐射为热量散失的主要途径,占总散失热量的77.63%,热传导散失的热量占比为22.36%,钛挥发导致的热量损失忽略不计;钛液挥发主要发生于初炼冷床内;相同熔炼功率下,增加熔炼速率可降低初炼冷床内钛液的过热度和挥发速率,当熔炼速率由1000 kg/h增加至2000 kg/h时,钛液的过热度由210 K降低至8 K,最大挥发速率由0.0022 kg/s降低至0.0004 kg/s。Based on the electron beam cold hearth furnace(EB furnace)with the total power of 3200 kW and C-type cold hearth,a numerical model coupled with flow field,heat transfer,solidification and evaporation of molten titanium was established.The metallurgical behavior of molten titanium in melting hearth and refining hearth under different processes was investigated.The results show that the thermal radiation is the main way of heat loss during the stable melting process,accounting for 77.63%,the heat loss via thermal conduction accounts for 22.36%,and that via evaporation can be ignored.The evaporation of molten titanium mainly occurs in the melting hearth.With the same melting power,increasing melting rate can reduce the superheat and evaporation rate of molten titanium in melting hearth.When the melting rate increases from 1000 kg/h to 2000 kg/h,the superheat of molten titanium decreases from 210 K to 8 K,and the maximum evaporation rate decreases from 0.0022 kg/s to 0.0004 kg/s.

关 键 词：电子束冷床炉 数值模拟 冷床 传热 凝固 

分 类 号：TG146.23[一般工业技术—材料科学与工程]