铁水混合喷吹脱硫喷吹罐工艺参数设计.docVIP

摘 要 在现代钢铁冶金生产工艺中，很重要的一门技术就是铁水预处理，又称为铁水炉外处理。它对于优化钢铁冶金工艺、提高钢的质量、发展优质钢种、提高钢铁冶金企业的综合效益起着重要作用，已发展成为钢铁冶炼中不可缺少的工序。其中脱硫是最早发展的铁水预处理技术。 喷吹罐是脱硫工艺中的主要设备，常用方式是向上出料和向下出料。向上出料的喷吹罐对喷吹速率控制能力强，但操作复杂。向下出料的喷吹罐结构简单，易于操作，但是对喷吹速率控制力弱。 本文主要是设计一种操作简单，且对喷吹速率控制很好的喷吹罐。本喷吹罐主要包括罐体、机械给料部件、流化室和喉口。主要参数为罐体体积1.22m3, 旋转给料器转速77.78r/分钟，流化室进气口压强4×10Pa，补气口压强2.2466×105Pa。 ABSTRACT In modern iron and steel metallurgy in the production process, a very important technology is the hot metal pretreatment, also known as hot metal processing. It is optimized for iron and steel metallurgy process, improve the quality of steel, high-quality steel, iron and steel metallurgy development improve the comprehensive benefit of enterprise plays an important role, has become an indispensable step in steel smelting Which is the earliest development of the desulfurization of hot metal pretreatment. Puffing tank is the main of desulfurization equipment, commonly used method is the material up and down out of the material. Up material puffing tank injection rate control ability, but the operation is complex. Down the material in the puffing tank structure is simple, easy to operate, but the injection rate control is weak. This paper is to design a simple operation, and control the puffing tank injection rate. The puffing tank including tanks, mechanical feeding part, the fluidization chamber and throat. The main parameters for the volume 1.22m3, rotary feeder speed for 77.78r/ min, the fluidizing chamber inlet pressure of 4 × 105Pa, Buqi mouth pressure is2.2466 × 105Pa. Key words The pretreatment of hot metal, blowing desulphurization, puffing tank, a fluidization chamber, throat 目录 摘要 I ABSTRACT II １绪论 1 1.1课题背景 1 1.2国内外情况 1 1.3课题内容 2 1.4课题目的 2 2各种脱硫剂种类及其脱硫原理 3 2.1脱硫剂种类 3 2.1.1 碳酸钠(Na2CO3) 4 2.1.2 石灰(CaO)系脱硫剂 4 2.1.3 碳化钙(CaC2)系脱硫剂 5 2.1.4 镁系脱硫剂 6 3主要铁水预脱硫工艺 9 3.1 KR 搅拌法 9 3.2 喷吹法 10 4铁水喷吹罐的工作原理及性能分析 14 4.1喷吹罐的工作原理 14 4.1.1向上出料的喷吹罐 14 4.1.2向下出料的喷吹罐 15 4.2性能分析 16 5改进后的喷吹罐 17 6设计计算 18 6.1要求 18 6.1.1设计依据 18 6.1.2设计范围