精炼时利用小气泡搅拌去除钢液中的氢和夹杂物

特殊钢 ›› 2010, Vol. 31 ›› Issue (2): 29-32.

精炼时利用小气泡搅拌去除钢液中的氢和夹杂物

赵晶晶, 程树森

北京科技大学冶金与生态工程学院，北京100083

收稿日期:2009-10-30 出版日期:2010-04-01 发布日期:2022-11-16
作者简介:赵晶晶(1986-)，女，硕士研究生，精炼、精炼钢液流动、传热的数值模拟。
基金资助:
国家自然科学基金资助项目(60672145)

Hydrogen and Inclusion Removal from Liquid Steel by Small Bubbles Stirring during Refining

Zhao Jingjing , Cheng Shusen

School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083

Received:2009-10-30 Published:2010-04-01 Online:2022-11-16

摘要/Abstract

摘要： 通过理论计算研究和分析了钢液气泡直径、吹气量和吹气时间对精炼时去氢和夹杂的影响。氩气经透气砖进入钢液后会形成大量的气泡,小气泡在钢液中能有效地增大脱气面积,有利于减小钢液中的氢含量。夹杂物与气泡的粘附上浮是钢液中去除夹杂物的一种有效方式,气泡越小、夹杂物越大,夹杂物就越容易去除。在钢包精炼过程中,应使用小气泡来达到较好的去氢和去夹杂效果,气泡的最优直径为1～3 mm。

关键词: , 吹氩, 小气泡, 氢, 夹杂

Abstract: The effect of gas bubble size, injection rate and blowing time on removal of hydrogen and inclusion in liquid steel during refining has been studied and analyzed by theory calculation. A large number of bubbles form in liquid steel as the argon gas injection through porous brick. Small bubbles are available to increase the degassing area in liquid steel and favorable to decrease hydrogen content in steel. Inclusion adhering to bubble then going up is an effective way to remove the inclusions, and the smaller the bubbles and the larger the inclusions, the easier to remove the inclusions from liquid steel. During la祖e refining, it is available to remove the hydrogen and the inclusions in liquid steel by small injecting bubbles, and the optimum bubble diameter is 1 ~ 3 mm.

Key words: Argon Gas Injection, Small Bubble, Hydrogen, Inclusions

赵晶晶, 程树森. 精炼时利用小气泡搅拌去除钢液中的氢和夹杂物[J]. 特殊钢, 2010, 31(2): 29-32.

Zhao Jingjing , Cheng Shusen. Hydrogen and Inclusion Removal from Liquid Steel by Small Bubbles Stirring during Refining[J]. Special Steel, 2010, 31(2): 29-32.

参考文献

1 Mazumdar D, Guthrie R L. The Physical and Mathematical Modeling of Gas Stirred Ladle Systems. ISU International ,1995,35 (1): 1
2 Madan M, Satish D, Mazumdar D. Modeling of Mixing in Ladles Fitted with Dual Plugs. ISU International ,2005,45(5) ：677
3 顾坤良，刘浩,刘沛环.铝合金熔体微气泡法脱氢的实验研究. 轻金属，1993,18(2):58
4 Zheng Xiaofeng, Hayes Peter C, Lee Hae-Geon. Particle Removal From Liquid Phase using Fine Gas Bubbles. ISIJ International, 1997, 31(17) ：1091
5 郑淑国，朱苗勇.钢包内喷嘴与透气砖吹氯去夹杂水模型研究.金属学报,2006,42( 11 )：1143
6 陈维从，刘浩,刘沛环.钢水微气泡精炼脱氢脱氧的研究.钢铁研究学报,1998,10(1)=10
7 张家芸.冶金物理化学.北京:冶金工业出版社,2004
8 郭可切，高钦,张国梁.包内吹惰性气体精炼动力学的研究.大连理工学报，1979,10(3)；122
9 Zhang Lifeng, Taniguchi S. Fundamentals of Inclusion Removal From Liquid Steel by Bubble Flotation. International Materials Reviews, 2000,45(2)：59
10 Clift R,Grace J R, Weber M E. Bubbles,Drops and Particles. Academic Press,New York, 1978
11 Peebles F N, Garber H J. Studies on the Motion of Gas Bubbles in Liquids. Chemical Engineering and Processing, 1953,49：88
12 Wang Laihua, Lee Hae-Geon, Hayes Peter. Prediction of the Opti mum Bubble Size for Inclusion Removal From Molten Steel by Flotation. ISU International,1996,36(1) ：7
13 薛正良，王义芳,王立涛，等.用小气泡从钢液中去除夹杂物颗粒.金属学报,2003,39(4):431
14 Pan Wei, Uemura Kenichiro, Koyama Shinji. Cold Model Experiment on Entrapment of Inclusions in Steel by Inert Gas Bubbles. Tetsu-to- Hagand, 1992,78(8)： 1361
15 Cramb A W,Jimbo I. Calculation of Interfacial Tension in Metal-slag Systems. Steel Research ,1989 ；157
16 Yoon R H, Luttrell G H. The Effect of Bubble Size on Fine Particle Flotation. Mineral Processing and Extractive Metallurgy Review, 1989,5:101
17 刘红，解茂昭,韩景东，等•黏性液体中锐孔处气泡的形成.热科学与技术,2005,4(3):262
18 Evaus G M, Jameson G J, Atkinson B W. Prediction of the Bubble Size Generated by a Plunging Jet Bubble Column. Chemical Engineering Science, 1992,47 ：3265

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