气泡去除夹杂物技术研究现状及发展趋势

摘要/Abstract

摘要： 利用气泡去除钢中夹杂物是洁净钢生产中重要的精炼手段之一。气泡去除夹杂物机理表明，通过气泡碰撞粘附夹杂物上浮和气泡尾流携带夹杂物上浮是气泡去除夹杂物的两种主要方式，微小气泡具有优异的粘附去除钢中夹杂物效果已成为共识。对钢包吹氩、钢包长水口吹氩、反应诱发微小异相技术、中间包气幕挡墙、增压减压法、超声空化法、増氮析氮法和微小氢气泡法等气泡去除夹杂物的去除效果和应用前景进行了比较分析，结果表明钢中生成小尺寸气泡对夹杂物去除效果优于大尺寸气泡。利用弥散微小气泡去除钢中夹杂物技术的开发越来越受到冶金工作者的重视，部分新技术已被开发并趋于成熟。

关键词: 洁净钢, 气泡, 夹杂物, 夹杂物去除, 微小氢气泡法

Abstract: Using bubbles to remove inclusions in steel is now becoming one of the important means of refining. The mechanism on inclusion removal by bubbles shows that inclusion floating through adhering by bubbles and involving in bubble wake are two main means of inclusion removal by bubbles. It has become a consensus that tiny bubbles have excellent effect on inclusion removal. In the present study, different inclusion removal methods by using bubbles and their prospect have been analyzed and compared, such as the argon blowing, argon injecting into shroud, fine and uniform heterophases in the molten steel, air curtain in the tundish, pressure elevating and reducing method, ultrasonic cavitation method, nitrogen absorbing and releasing method, inclusions removal by fine hydrogen bubbles method etc. The results show that tiny bubbles generated in steel on inclusions removal have better effect than the big bubbles. Nowadays, using dispersion tiny bubbles to remove inclusions in steel is paid more attention by the metallurgists. Some of the new inclusion removal technologies have been developed and are tending to be matured.

Key words: clean steel, bubble, inclusion, inclusion removal, fine hydrogen bubble method

刘建华，张杰，李康伟. 气泡去除夹杂物技术研究现状及发展趋势[J]. 炼钢, 2017, 33(2): 1-9.

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气泡去除夹杂物技术研究现状及发展趋势

Current state and prospect of technologies for removing inclusion by bubbles

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