【完美升级版】年产130万吨连铸坯的电弧炉炼钢车间设计毕业论文

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摘要

本文叙述了年产130万吨连铸坯的电弧炉炼钢车间工艺设计过程，通过对电弧炉相关材料的查阅，对现代电弧炉炼钢工艺及车间布置有了一定的了解和认识。在此次设计中，主要冶炼的钢种为不锈钢，生产钢板为主。通过查阅资料选择了合适的冶炼工艺路线和相应的设备。严格按照设计任务书的要求，先后进行并完成了不锈钢1Cr17Ni2的物料平衡和热平衡的计算，电弧炉炉型尺寸的计算及确定、相应配备设备的计算及确定如：变压器、AOD、钢包、中间包、板坯连铸机等设备尺寸的选择确定、炉外精炼方式的选择确定，电弧炉车间的整体布置以及人员配备和经济指标的核算等任务。电弧炉新技术的开发给电弧炉炼钢带来了巨大的经济效益与环境优势，本文针对现代电弧炉炼钢新技术方面作了详细的讨论。

关键词：电弧炉，偏心底出钢，氩氧炉，炉外精炼

Abstract

This article describes the capacity of 1.3mt of continuous casting slab EAF steelmaking process design process, through workshop of electric arc furnace of relevant materials of modem eaf or process and workshop layout have certain knowledge and understanding.During the design process,the main steel products is steel board of stainless steel .According to smelting steel grade ,choose a suitable route and the corresponding equipment. In strict accordance with the design specification requirements,has been completed materials balance and heat balance of 1Cr17Ni2 , the type size calculation of EAF,the

calculation

of

corresponding

equipment

,such

as

the

transformer ,AOD,the ladle,tundish,slab continuous casting machine etc,The overall layout of electric arc furnace plant and the economic indicators business accounting.The development of EAF new technology brought enormous economic benefits and environmental advantages,this paper has made a detailed discussion about the modern EAF steelmaking technology.

Key Words：electric arc furnace, EBT, AOD ,external refining

目录

1 电弧炉炼钢车间的设计方案 ....................................... 1

1.1电炉车间生产能力计算 ...................................... 1

1.1.1电炉容量和台数的确定 ................................. 1 1.1.2电炉车间生产技术指标 ................................. 1 1.2电弧炉炼钢车间设计 ........................................ 2

1.2.1电弧炉炼钢车间设计与建设的基础材料 ................... 2 1.2.2电炉炼钢车间的组成 ................................... 2 1.2.3电炉各车间的布置情况 ................................. 3

2电弧炉炉型设计 .................................................. 4

2.1电弧炉炉型设计 ............................................ 4

2.1.1电弧炉炉型 ........................................... 4 2.1.2熔池的形状和尺寸 ..................................... 4 2.1.4炉衬厚度 ............................................. 6 2.1.5工作门和出钢口 ....................................... 7 2.2偏心底出钢箱的设计 ........................................ 7

2.2.1炉壳 ................................................. 7 2.2.2炉底 ................................................. 8 2.2.3出钢口 ............................................... 8 2.2.4机械装置 ............................................. 8 2.2.5出钢箱设计参数 ....................................... 8

2.3电弧炉变压器容量和参数的确定 .............................. 9

2.3.1确定变压器的容量 ..................................... 9 2.3.2电压级数 ............................................ 10 2.3.3电极直径的确定 ...................................... 10 2.3.4电极极心圆的尺寸 .................................... 10 2.3.5短网的设计 .......................................... 11 2.4水冷挂渣炉壁设计 ......................................... 12 2.5水冷炉盖设计 ............................................. 12 3电弧炉炼钢物料平衡和热平衡 ..................................... 13

3.1物料衡算 ................................................. 13

3.1.1 熔化期物料计算 ..................................... 13 3.1.2氧化期物料计算 ...................................... 18 3.2热平衡计算 ............................................... 22

3.2.1计算热收入QS ........................................ 22 3.2.2计算热支出QZ ........................................ 22

4 车间主要设备的选择 ............................................ 26

4.1电弧炉主要设备的选择 ..................................... 26

4.1.1校核年产量 .......................................... 26 4.1.2对电极的要求 ........................................ 26 4.2精炼炉设备选择 ........................................... 26 4.3连铸设备选择 ............................................. 27

4.3.1钢包允许的最大浇注时间 .............................. 27 4.3.2拉坯速度 ............................................ 27 4.3.3连铸机的流数 ........................................ 28

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