1000万吨连铸坯氧气转炉炼钢厂设计.doc

设计总说明 本设计为具有代表性的氧气顶底复吹工艺，预计年生产能力为万吨。车间设有公称容量为0吨的转炉座，精炼炉2座、方坯连铸机台。转炉的冶炼周期分钟，吹氧时间1分钟。 根据国内外转炉炼钢技术的发展趋势，结合设计任务书中，选择了炉外精炼设备，进行全连铸生产。 本次设计在对转炉物料平衡和热平衡计算的基础上，对炼钢车间的主要设备参数进行了设计、选型，完成了主体设备选择、炼钢工艺设计、主厂房工艺布置和设备布置。编制说明书一份，绘制转炉炉型图、车间平面图、剖面图各一张，完成专题部分及翻译与冶金专业相关的外文文献。 关键词：炼钢，顶底复吹精炼，连铸，工艺设计 Design Description Converter steelmaking is a modern integrated steel production processes indispensable part connecting the outer iron and refining, continuous casting, rolling and other production processes. In this paper, the representative process combined-blowing oxygen converter process with a scale of 108 continuous casting billet annual is designed. In the workshop, main equipments including 3×300t converters and its auxiliary equipments with 2 RH refining furnaces, 2 sets of billet continuous casting machine and 2 sets of slab continuous casting machine are designed. The Smelting period is set for 42 minutes sin which the actual oxygen blowing time is only 19 minutes. Depending on the development trend of steel-making process and the quality requirement of carbon steel, low alloy steel and automobile plate, RH refining is selected to fulfill continuous casting. On the base of the material and heat balance calculation,the size of steel-making plant workshop span and device assign, personnel placement is made .A project instruction is redacted ,furnace size graphic, a ground plane and a sectional view of the workshop are also submitted. And finally, Complete the thematic part and translation of foreign documents related to metallurgical profession. Key Words: steelmaking, combined-blown, refining, continuous casting, process design 目 录 1 文献综述 1 1.1 中国钢铁行业的发展历程 1 1.2 中国钢铁行业现状 1 1.2.1 钢铁产业集中度低 1 1.2.2 钢铁产品结构不合理 1 1.2.3 钢铁企业资产负债率较高 2 1.3 炼钢生产在整个系统的作用 2 1.4 中国氧气转炉的发展历程 2 1.5 钢铁企业未来发展展望 3 2 转炉炼钢车间设计方案 4 2.1 转炉炼钢工艺流程 4 2.2 主要钢种的选择 5 2.3 转炉车间组成 5 2.4 转炉座数、容量和车间生产能力的确定 5 2.4.1 转炉座数 5 2.4.2 车间生产能力的确定 5 2.4.3 按标准系列确定炉子的容量 6 2.4.4 核算车间年产量 6 3 物料平衡与热平衡计算 8 3.1 物料平衡 8 3.1.1 计算所需