不同氧化铝颗粒含量对引流砂烧结行为的影响  

EFFECT OF DIFFERENT ALUMINA PARTICLE CONTENT ON SINTERING BEHAVIOR OF DRAINAGE SAND

作　　者：代宝刚 Dai Baogang(Manufacturing Department,HBIS Group Tangsteel Company,Tangshan 063000,Hebei)

机构地区：[1]河钢集团唐钢公司生产制造部,河北唐山063000

出　　处：《河北冶金》2024年第1期69-73,共5页Hebei Metallurgy

摘　　要：钢包向中间包浇注钢液过程中,需要将引流砂填入钢包座砖来对滑动水口和钢液进行隔绝。引流砂在座砖内因为钢液温度高而出现的烧结行为会影响生产且存在一定的安全隐患,当前研究中常规铬质引流砂中添加氧化铝颗粒后的烧结行为研究较少,作用机制不明确。研究了常规铬质引流砂中添加少量氧化铝后的烧结行为。将石英砂、氧化铝砂和铬铁矿砂按不同配比配置引流砂,制成引流砂片,进行单独烧结和钢液作用下引流砂的烧结行为试验。分析了不同钢液作用下引流砂烧结前后形貌及物相组成。结果表明,有钢液作用和引流砂单独烧结过程中,氧化铝对常规铬质引流砂烧结行为的影响几乎相同。引流砂中添加少量氧化铝(5%)不能抑制烧结且会恶化引流砂的烧结性能,氧化铝添加量10%才能对烧结产生抑制作用。常规铬质引流砂在铝镇静钢生产中会产生较好的使用效果,在实际生产中不建议添加额外的氧化铝颗粒。该研究为实际中生产中,引流砂烧结行为的研究提供了参考。In the process of pouring molten steel from ladle to tundish,it is necessary to fill the drainage sand into the ladle seat brick to isolate the sliding nozzle and the molten steel.The sintering behavior of drainage sand in the brick due to the high temperature of molten steel will affect the production and there are certain potential safety hazards,and there are few studies on the sintering behavior after adding alumina particles to conventional chromium drainage sand,and the mechanism of action is not clear.The sintering behavior of a small amount of alumina in conventional chrome drainage sand was studied.Quartz sand,alumina sand and chromite sand were configured with drainage sand in different proportions to make drainage sand flakes,and the sintering behavior test of drainage sand under the action of sintering alone and molten steel was carried out.The morphology and phase composition of drainage sand before and after sintering under different molten steel conditions were analyzed.The results show that the effect of alumina on the sintering behavior of conventional chromium drainage sand is almost the same in the process of molten steel and separate sintering of the drainage sand.The addition of a small amount of alumina(5%)to the drainage sand cannot inhibit the sintering and will deteriorate the sintering performance of the drainage sand,and the addition of 10%of alumina can inhibit the sintering.Conventional chrome drainage sand will produce a good use effect in the production of aluminum calming steel,and it is not recommended to add additional alumina particles in actual production.This study provides a reference for the study of the sintering behavior of drainage sand in actual production.

关 键 词：氧化铝 引流砂 烧结 钢液 浇注 

分 类 号：TF341[冶金工程—冶金机械及自动化]