摘要
文中从溅渣用炉渣要求、溅渣加料时机及种类、溅渣工艺参数、溅渣过程中几类现象开展溅渣工艺技术研究,提出溅渣用炉渣要求在一定温度范围内,具有较好的流动性、粘性、抗高温侵蚀性.围绕炉渣要求,对溅渣加料时机、种类进行研究,得出低碳低磷钢溅渣过程应以熟料为主,以增加渣中碳和镁的物料为主.在提高溅渣量和溅渣效果方面,通过溅渣水模型实验,研究了枪位、顶底吹流量、渣量对溅渣的影响,得出对溅渣量和溅渣效果影响因素大小排序为枪位、渣量、顶吹流量,而底吹流量变化对溅渣量和溅渣效果无影响.实际溅渣作业过程中存在较多问题,如溅渣加料不固定、溅渣枪位不规范等,各厂应根据自身情况开发自动溅渣模型,实现自动加料和自动溅渣,参考溅渣水模型实验结论动态控制渣量、枪位等参数,以保证溅渣后炉型规则、炉壁溅渣层厚度均匀.
In this paper, the slag splashing technology was studied from the requirements of slag used in slag splashing, the timing and type of slag splashing, the process parameters involved in the slag splashing process, and different phenomena in the practice of slag splashing. It was proposed that the slag for slag splashing shall feature good fluidity, viscosity and high temperature corrosion resistance in a certain temperature range. Based on requirements above, the timing and type of slag splashing were systematically analyzed and the operation that mainly increasing the clinker, and materials with carbon and magnesium as the main part in the slag splashing process of low carbon and low phosphorus steel was proposed. In terms of slag splashing quantity and slag splashing effect, the effects of lance position, top and bottom blowing flow rate and slag quantity on slag splashing were studied by slag splashing water model experiment. Based on the factors that were ranked as lance position > the slag quantity>the top and bottom blowing flow rate, it concluded that those factors had no influence on the slag splashing effect. There are many problems existing in the practice of slag splashing operation including non-standard slag splashing operation. An automatic slag splashing model should be developed by each factory according to its own situation to achieve automatic feeding and automatic slag splashing. Based on the simulation test conclusion, the slag quantity and lance position could be dynamically controlled and shape-regular furnace after slag splashing and uniform slag layer thickness could be ensured.
作者
吕长海
李晶
史成斌
闫威
郑从杰
LV Changhai;LI Jing;SHI Chengbin;YAN Wei;ZHENG Congjie(State Key Laboratory of Advanced Metallurgy Technology,University of Science and Technology Beijing,Beijing 100083,China;Institute of Technology,Central Iron and Steel Research Institute,Beijing 100083,China)
出处
《江西冶金》
2019年第5期18-25,共8页
Jiangxi Metallurgy
基金
国家自然科学基金资助项目(51904022)
关键词
低碳低磷钢
溅渣
水模型试验
枪位
顶底吹流量
渣量
low carbon low phosphorus steel
slag splashing
water model test
lance position
top and bottom blowing flow rate
slag quantity
