摘要:电炉炼钢是当今世界上最重要的炼钢方法之一，同时也是钢铁生产实现短流程的核心环节。电炉炼钢过程流程短、能耗低、环境负荷轻，是一种较为清洁的、先进的炼钢方法。而炉外精炼的产生是上个世纪中叶以来迅速发展的钢铁冶金重要技术[1]。提高生产率，降低生产成本，代替电炉还原期、缓冲、温度、成分调整，提高钢质量，去除钢种的有害元素及气体S、O、N、H、C 等，夹杂物去除及控制，满足不同钢种的特殊要求，扩大品种。

　　　选择此题目一方面是查找资料了解电炉炼钢及炉外精炼技术的发展及应用，另一方面对自己以后的工作方向及理论基础做一次全面的学习。年产400万吨合格铸坯炼钢厂电炉炼钢工艺车间设计中，选用电炉型号为HX2-100，炉壳直径为6400mm，熔池尺寸为5300×1220mm×mm，炉壁高度为2880mm，炉底厚度取为800mm，炉口直径为600mm，出钢口的内径长为800mm。整个车间的总跨度为108m，纵向长为80m，车间最高处为36m。通过完成此次设计，使我能够对钢铁厂生产工艺流程、主要技术条件、冶金计算、冶金设备等实际生产情况有比较全面的了解和掌握，也使自己成为符合需要的合格专业技术人才。

关键词： 炼钢；电弧炉；炉外精炼

ABSTRACT:Electric furnace steelmaking in the world today is one of the most important steelmaking process, is also the core of the short flow steelmaking process. Electric furnace steelmaking process flow short, low energy consumption and environmental load is light, is a kind of cleaner, advanced steelmaking process. And produced by refining outside the furnace is the middle of the last century since the rapid development of iron and steel metallurgy important technique [1]. Improve productivity, reduce production cost, instead of electric furnace reduction period, buffer, temperature, composition adjustment, improve the quality of steel, removal of harmful elements of steel grade and gas S, O, N, H, C, etc., inclusion removal and control, to meet the special requirements of different steel grade, expand the varieties.

　　I selected this topic on the one hand, is knowledge of electric furnace steelmaking and finding out information technology development and application of refining outside the furnace, on the other hand to their later work direction and theoretical basis for a comprehensive study. Annual output of 4 million tons of qualified casting steel in eaf steelmaking workshop design, selects the electric models for HX2-100, furnace shell and a diameter of 6400 mm, molten pool size is 5300 * 1220 was, furnace wall height is 2880 mm, the bottom thickness is 800 mm, throat opening diameter of 600 mm, inner diameter of the tapping hole is 800 mm long. The workshop of the total span of 108 m, longitudinal is 80 m long, workshop of the top is 36 m. I was able to complete the design, in order to improve the steel production process flow, main technical conditions, metallurgical calculation, metallurgical equipment and so on the practical production situation have a comprehensive understanding and grasp, also make oneself be in line with the needs of qualified professional and technical personnel.

Keywords: Steelmaking，Electric Arc Furnace，Refining Outside