年产720万吨炼钢厂设计说明书.docVIP

西安建筑科技大学 本科毕业设计（论文） 题 目 学生姓名 学 号 院（系） 专 业 指导教师 时 间 年 月 日 年产720万吨连铸坯的转炉 炼钢车间工艺设计 专 业： 冶金工程 姓 名： 焦光普 指导老师： 巨建涛 设计总说明 为了将更深入的熟悉炼钢厂，熟练掌握炼钢工艺流程，并明确炼钢过程的原料、设备、操作及物料的运输，在此做了年产720万吨连铸坯炼钢厂设计 此设计是在在转炉炼钢物料平衡和热平衡及各种消耗指标计算的基础上，对炼钢车间的主要设备参数包括300t顶底复吹转炉和氧枪、连铸机和精炼设备等进行了计算和选择，进行了复吹转炉炼钢车间工艺布置和生产组织及人员初步编制。根据国内外转炉炼钢技术的发展趋势，结合设计任务书中钢种要求，以Q235A作为代表进行设计，选择LF作为炉外精炼设备，进行全连铸生产。最终确定如下的的工艺流程：铁水预脱硫处理→转炉炼钢→LF精炼→连铸. 编制设计说明书，并绘制出转炉炉型图、车间平面布置图和车间剖面图各一张，并完成专题论文研究一篇。 关键词：复吹转炉，炼钢，连铸，工艺设计，物料平衡与热平衡 A Process Design of BOF Steelmaking Plant with An Annual Productivity of 7.2 mt Continuous Casting Billet Speciality： Metallurgical Engineering Name： Jiao Guangpu Instrctor： Ju Jiantao Design Description To know The steel mill better and have a good command of steel making process,A design for a steel mill which has a production of 7,200,000 ton continuously cast product is worked out.That also helps a better understanding of the materials，equipment，operation in steel making process。 Based on calculation of material balance in the converter steelmaking and thermal balance and a variety of consumption indicators, main equipments including 300t converter and its auxiliary equipments are designed. Casters and refining equipments were planned. Also converter workshop process layout were given，and the organization of production and personnel scheduling are roughly arranged. With the development trend of converter steelmaking technology at home and abroad, combination with the requirements of introduction. As representatives in the design of Q235A, LF refining is selected to fulfill continuous casting. Finally ,the following process flow chooses as：Pretreatment →BOF→→CC. Finally, a design instruction, a furnace drawing, a workshop section drawing and a workshop layout drawing are submitted. And a research paper is completed too. Key Words: Combined-Blown Converter，Steelmaking，continuous casting ，Mass Balance and Thermal Equilibrium，Process Design 1复