毕业论文年产万吨转炉炼钢车间设计.doc

毕业论文--年产300万吨转炉炼钢车间设计 Abstact The main task of this design is designing a plant wich perduce 33 million tons of steel per year It is become 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 besidesalso 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 combined blown converter steelmaking refining casting continuous casting 目录 1 绪 论 7 11 转炉冶炼原理简介[1] 7 12 氧气转炉炼钢的特点 8 13设计原则和指导思想 9 14 产品方案 9 2 氧气转炉炼钢车间 11 21 初始条件 11 22 公称容量选择[2] 11 23 转炉座数的确定 11 24根据生产规模和产品方案计算出年需钢水量 12 25 计算年产钢量 12 3 转炉物料平衡和热平衡计算 13 31 氧气顶底复吹转炉的物料平衡和热平衡 13 com 物料平衡计算 13 32热平衡计算 25 com计算所需数据 25 com骤 26 4转炉炉型及氧枪设计 30 41 转炉炉型设计 30 com择 30 com公称吨位 30 com确定 31 com 32 com要尺寸的确定 32 com 转炉设备及修砌 39 42 氧枪喷头设计 42 com计 42 com 氧枪枪身设计 44 com降和更换机构 46 com 副枪设计 47 com 副枪的功能和要求 47 43 底部供气元件设计 48 com类 48 com件的选择 48 com量及布置 48 5转炉炼钢的生产制度 50 51主要原材料的技术要求 50 com 50 com料 51 com 52 52装料制度 53 53供氧制度 54 com度主要工艺参数 54 com作 54 54造渣制度 55 com双渣操作 56 com料用量计算及加入 56 com整 57 55 温度制度 57 com制原则 57 56 终点控制与出钢 59 57 脱氧合金化 60 com金化操作 60 com 影响合金元素吸收率的因素 60 58 精炼与连铸 61 6 车间工艺布置 62 61 车间生产工艺流程图 62 62 供应系统 63 63 转炉烟气净化与回收系统 64 64 炉下出钢出渣系统 65 7 冶炼车间组成及车间布置 66 71 冶炼车间的组成和厂房的布置形式 66 com组成 66 72 主厂房的工艺布置 66 com间的布置 67 73 转炉跨间的布置 68 74 精炼跨间的布置 72 75浇铸跨间的布置 72 com连铸机总长度 72 com高度 73 com浇注平台尺寸 73 com长度 74 com吊车轨面标高 74 8