年产180万吨转炉炼钢车间设计
学校： 昆明理工大学
专业： 冶金工程 班次： 2002（2） 姓名： 普松
指导老师单位： 昆明理工大学 姓名：普靖中 职称： 副教授
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目 录.
摘 要 ........................................................................................................................................... 4 ABSTRACT ........................................................................................................................................ 5 前 言 ........................................................................................................................................... 6 第一章 设计概述 ......................................................................................................................... 7 1.1主要用途 ............................................................................................................................... 8 1.2 冶炼要点 ............................................................................................................................. 8 1.3 化学成分对H08性能的影响 ............................................................................................ 9 1.4 现代全连铸冶炼焊条钢要点 ........................................................................................... 10 第二章 氧气顶吹转炉炼钢物料平衡和热平衡 ....................................................................... 11 2.1 物料平衡计算 ................................................................................................................... 11 2.2 热平衡计算 ....................................................................................................................... 21 第三章 氧气顶吹转炉的设计与计算 ......................................................................................... 27 3.1 炉型设计 ........................................................................................................................... 27 3.2 氧气顶吹转炉炉衬设计 ................................................................................................... 30 3.3 氧气顶吹转炉炉体金属构件设计 ................................................................................... 31 3.4 支承装置 ........................................................................................................................... 32 3.5 倾动机构 ........................................................................................................................... 32 3.6 底部供气构件的设计 ......................................................................................................... 34 第四章 氧枪的设计与计算 ....................................................................................................... 36 4.1 喷头设计 ........................................................................................................................... 36 4.2 氧枪水冷系统 ................................................................................................................... 40 第五章 连铸机的设计与计算 ................................................................................................... 43 5.1 连铸机的主要工艺参数 .................................................................................................. 43 5.2 连铸机生产能力的确定 .................................................................................................. 50 5.3 盛钢桶及其载运设备 ....................................................................................................... 54 5.4 中间包及其载运设备 ....................................................................................................... 55 5.5 结晶器及其振动装置 ....................................................................................................... 57 5.6 二次冷却装置 ................................................................................................................... 59 第六章 钢包的设计与计算 ....................................................................................................... 63
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6.1 盛钢桶尺寸计算 ............................................................................................................... 63 6.2 盛钢桶质量 ....................................................................................................................... 65 6.3 盛钢桶重心计算 ............................................................................................................... 67 第七章 铁水预处理及炉外精练 ............................................................................................... 68 7.1铁水预处理 ........................................................................................................................ 68 7.2炉外精练 ............................................................................................................................ 69 第八章 转炉炼钢车间布置 ....................................................................................................... 71 8.1 转炉容量及车间生产能力的确定 ................................................................................... 71 8.2 全厂金属平衡表的制定 ................................................................................................... 72 8.3 主厂房工艺布置 ................................................................................................................. 73 总结与体会 ................................................................................................................................... 74 谢 辞 ......................................................................................................................................... 75 参考文献 ....................................................................................................................................... 76
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摘 要
本次设计的是一座年产180万吨合格坯的氧气顶吹转炉炼钢厂。冶炼的钢种为碳素焊条钢，主要牌号：H08A、H08E、H08C主要规格：f 6.5mm、f 6.0mm、f 5.5mm。两座120吨的氧气顶吹转炉，年产钢水量为189.22万吨，采用三孔氧枪，氧流量为333.33Nm3/min，配用钢包的额定容量为150吨；两台2机6流板坯弧形连铸机，连铸机的弧形半径为6m，主产品断面尺寸20031000mm，连铸机设计年生产能力为205.2万吨。
设计主要针对转炉炼钢厂,其中包括炼钢厂规模、生产工艺流程、冶炼的钢种牌号、全厂金属料消耗平衡表、转炉炼钢车间的物料平衡和热平衡计算、转炉炉型选择及设计计算、氧枪喷头及枪身设计计算、连铸机以及车间附属设备的计算选型、车间平面布置设计等。
关键字：氧枪，转炉，连铸机，碳素焊条钢
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Abstract
The task of this design is to design a steelmaking mill with top oxygen blowing vessels that has an annual productivity of 1 million tons’ fine butts. It produces series ofThe carbon welds the bar iron，Trademark：H08A、H08E、H08C，specification：f 6.5mm、f 6.0mm、f 5.5mm。 There are two top oxygen-blowing vessels, with a 1.892million tons productivity of hot metal. It adopts the oxygen core lance that has three holes, and the flow rate is 333.33Nm3/min. The matched steel ladle size is 150 tons. Also, there are two setcasting machines that are two machine and six currents and produce the plank block. The arc radius is 6m, and the major product’ contour size is 20031000mm. The annual productivity of the casting is 2.052 million tons.
This design aims at the converter steel mill primarily, among them include the steel mill scale and produce the steel of the craft flowsheet, the card number of smelting steel, and the balance sheet of whole plant depletion of metal charge. A calculation for of material balance and calorific balance in the converter ship, designing, then choosing the profile and furnace lines of converter, as well as choosing spray head and body of oxygen lance, calculating and choosing the caster type, then choose the other accessory equipment. Last, make an arrangement for the various equipments in the whole workshops.
Keywords: oxygen lance, converter, caster, The carbon welds the bar iron.
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