年产350万吨良坯炼钢车间的设计.doc

年产350万吨良坯炼钢车间的设计
摘要
本设计模拟在建立一个现代化年产350万吨的大型炼钢厂,以满足市场对钢材的需求,促进经济的稳定发展。本设计设有转炉两座,转炉大小均为200t,平均吹氧时间为40min,纯吹氧时间为18min,转炉作业率为84%,%,另外本车间炉外精炼主要采用了喂丝以及真空脱气手段。本车间的浇注方式为全连铸。车间的最终产品为方坯。转炉煤气净化回收系统采用湿法“OG”系统。“OG”系统采用“未燃法”降罩操作,对烟气进行净化并实施煤气自动回收。
此次的设计任务更加巩固了我所学的专业知识,与此同时也更加了解了转炉炼钢车间的各道工艺流程,为以后的工作打下了良好的基础。
关键词:转炉炼钢;车间设计;氧枪
ABSTRACT
This is a design of a steel workshop which tons of steel every year. According to material balance and heat balance calculation, a reasonable design was carried out from raw materials’ delivery to products’ production. This design has two 200t converter for steelmaking, the average time of oxygen applying is 40min ,pure oxygen applying time is 18min, the efficient of the bof is 84% , scrap metal and other auxiliary materials. The rate of casting billet is %, in addition , refining mainly adopts wire feeding and vacuum deairing, The final product is gas and dust are removed by means of OG.
The design more strengthened my major knowledge, at the same time also understand more about the converter steelmaking of each process , laiding a good foundation for the work of future.
Key word:Converter steelmaking ;Plant design;Equipment of blowing oxygen
目录
摘要 I
ABSTRACT II
1
1
1
2
炼钢技术发展 5
5
6
8
8
8
炼钢厂设计的原则 9
2. 炼钢过程的物料平衡和热平衡计算 9
氧气顶吹转炉炼钢物料平衡和热平衡 10
物料平衡的计算 10
热平衡的计算 20
27
金属平衡计算 27
生产规模的确定 27
转炉座数和大小的确定 27
转炉炉型选择及计算 28
转炉主要尺寸参数的确定和计算 28
30
炉衬材质选择 30
复吹转炉底部供气构件设计 30
底气种类 30
底气用量 30
供气构件 31
底吹元件布置 31
转炉炉体金属构件设计 31
炉壳设计 31
炉体支承系统设备 31
31
4原料供应系统的设计 33
33
33
33
33
废钢用量和种类 34
34
主要设备选择 34
35
散状料供应和主要设备选型 35
36