摘要
根据现场调研结果,采用物理模拟和数学模拟相结合的方法,系统地研究了浸入式水口单侧结瘤对结晶器内流场、液渣层以及气泡的影响,同时,还考察了不同体积的结瘤物脱落进入结晶器后的运动轨迹。研究结果表明,水口单孔结瘤将导致结晶器两侧流场不对称。相比较于结瘤侧,未结瘤侧流量增加,流股冲击增强,保护渣卷入钢液的几率增大,同时,未结瘤侧的气泡数量增多,气泡穿透深度增大。此外发现,不同体积结瘤物脱落进入结晶器后,粒径较大者更容易上浮至结晶器液面。
According to the results of on-site survey,effect of
SEN with single port clogging on flow field,liquid slag and bubbles in mold was
studied systematically by combining physical simulation and numerical
simulation.Meanwhile,the trajectory of clogs with different volume in mold was
investigated.The results show that nozzle with single port clogging would lead
to asymmetric flow filed in both sides of mold.Comparing with the side of port
clogging,the flow rate from the other side enhanced,which would reinforce the
impact and enlarge the probability of slag entrapment.The amount of bubbles
in the non-clogging side increased and the penetration of bubbles increased.In
addition,after the clogs with different volume entering into the mold,the one
with larger volume would easily float up to the free surface.
出处
《钢铁》
CAS
CSCD
北大核心
2009年第8期42-47,共6页
Iron and Steel
