铁水装入量150吨的提钒转炉车间工艺设计(doc 39页)

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攀枝花学院本科毕业设计（论文）

铁水装入量150吨的提钒转炉

车间工艺设计

学生姓名： 钟 志 乾 学生学号： 3123

院（系）： 资源与环境工程学院 年级专业： 2012级冶金工程 指导教师： 丁满堂 副教授 助理指导教师：

二〇一六年五月

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摘 要

本设计的主要任务是设计一个铁水装入量150吨的转炉提钒车间工艺设计，重点介绍了顶底复吹工艺部分。该设计介绍了一系列的提钒工艺。从物料平衡与热平衡计算开始进行初期参数的确定，设计内容主要包括：转炉炉型选择、供氧压力、供氧时间、底气选择、转炉底吹元件选择与布置、复吹工艺设计，其中复吹工艺设计是本设计的核心。

该设计由一座顶底复吹转炉采用“一吹一”模式提钒，转炉公称容量均为150t，底吹元件采用细钢管多孔型供气元件，选取6支的供气元件，底枪布置采用沿耳轴连接线30°，90°150°，210°270°，330°分布。复吹模式采用顶吹氧气底吹氮气，顶吹氧气强度为t·min,吹氧时间7min，每炉含钒水供氧量为min。底吹供气强度为·t?min。平均吹炼时间为25min，转炉提钒冶炼一炉钒渣主要原料用量:含钒铁水装入量135t、含钒生铁块15t、石英砂、半钢温度为1390℃。` 关键词：顶底复吹转炉，提钒方法，含钒铁水，转炉提钒

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ABSTRACT

The main task of this design is to design a furnace with 150 tons of molten iron. This design introduces a series of vanadium extraction process. From material balance and heat balance calculation to determine the early parameters, design content mainly include: selection of converter furnace type choosing, oxygen pressure, oxygen supply time, emboldened, converter bottom blowing component selection and layout, combined blowing process design, which combined blown process design is the core of this design.

The design by a top bottom combined blown converter vanadium using \mode, the converter nominal capacity were 150t, bottom blowing elements by thin steel tube type porous gas components, select 6 gas components,bottom lance arrangement by along the ear axis connecting line to 30°, 90° and 150°, 210°and 270°, 330°distribution. Combined blowing pattern the top blown oxygen bottom blowing nitrogen, strength of top blown oxygen t - min, oxygen blowing time of 7min, each furnace containing vanadium oxygen supply water quantity for min. The bottom blowing gas supply intensity is ~t / min. Average blowing time is 28min, converter provided the amount of vanadium smelting furnace vanadium slag as the main raw material: hot metal charging amount 135t, containing vanadium iron 15t, quartz sand , semi steel temperature 1390 ℃.

Key words: top bottom combined blowing converter, vanadium extraction method, vanadium containing molten iron, converter vanadium extraction