【正文】 車間的最終產(chǎn)品為 方 坯。 關(guān)鍵詞： 頂 底復(fù) 吹 轉(zhuǎn)爐 煉鋼 車間 精煉 連鑄 10410410410410410410410422222222222222 第 2 頁 Abstact The main task of this design is designing a plant wich perduce million tons of steel per year. It is bee the foundation of the material and thermal calculation, mainly include the following parts: the bof model designing, oxygen lance designing, equipment selection and calculation of continuous caster ,besides,also including operating and process system of steelmaking ,the core of the design is plant layouting This design has two 150t converter for steelmaking, the average time of oxygen applying is 38min ,pure oxygen applying time is 18min, the efficient of the bof is 80% , scrap metal and other auxiliary materials. The rate of casting billet is 98%, in addition , refining mainly adopts wire feeding and vacuum deairing, The final product is billet. 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. Keywords: top and bottom bined blown converter steelmaking refining casting continuous casting 10410410410410410410410433333333333333 第 3 頁 目錄 1 緒 論 ......................................................................................................................................................... 7 轉(zhuǎn)爐冶煉原理簡介 [1] ........................................................................................................................ 7 氧氣轉(zhuǎn)爐煉鋼的特點 ....................................................................................................................... 8 設(shè)計原則和指導(dǎo)思想 ........................................................................................................................ 9 產(chǎn)品方案 ............................................................................................................................................ 9 2 氧氣轉(zhuǎn)爐煉鋼車間 ................................................................................................................................ 11 初始條件 .......................................................................................................................................... 11 公稱容量選擇 [2] .............................................................................................................................. 11 轉(zhuǎn)爐座數(shù)的確定 ............................................................................................................................ 11 根 據(jù)生產(chǎn)規(guī)模和產(chǎn)品方案計算出年需鋼水量。 ...................................................................................................... 54 氧槍操作 ................................................................................................................................... 54 造渣制度 .......................................................................................................................................... 55 采用單雙渣操作 ...................................................................................................................... 55 各種渣料用量計算及加入 ...................................................................................................... 56 爐渣調(diào)整： ............................................................................................................................... 57 溫度制度 .......................................................................................................................................... 57 溫度控制原則 ........................................................................................................................... 57 終點控制與出鋼 ............................................................................................................................. 59 脫氧合金化 ...................................................................................................................................... 59 脫氧合金化操作 ...................................................................................................................... 59 影響合金元素吸收率的因素 ................................................................................................. 60 精煉與連鑄 ...................................................................................................................................... 61 6 車間工藝布置 ......................................................................................................................................... 61 車間生產(chǎn)工藝流程圖 ..................................................................................................................... 61 供應(yīng)系統(tǒng) .......................................................................................................................................... 62 轉(zhuǎn)爐煙氣凈化與回收系統(tǒng) ............................................................................................................. 64 爐下出鋼出渣系統(tǒng) ......................................................................................................................... 65 7 冶煉車間組成及車間布置 .................................................................................................................. 65 10410410410410410410410455555555555555 第 5 頁 冶煉車間的組成和廠房的布置形式 ............................................................................................ 65 車間的組成 ............................................................................................................................... 65 主廠房的工藝布置 ......................................................................................................................... 66 原料跨間的布置 ................