摘要
采用旋转桨吹氩，将吹入钢水中的氩气泡破碎成微小气泡，并均匀分布在钢水中，使氢、氧随氩气泡浮出，达到脱氢、脱氧的目的。本文主要研究各种因素对精炼钢水脱氢率、脱氧率的影响。结果表明：在本实验条件下，精炼２～３ｍｉｎ，脱氢率为５０．０７％，脱氧率为４８．５０％，脱硫率为４６．２０％；氩气流量和旋转枪转速最佳值分别为０．２５～０．２８ｍ３／ｈ和４２０ｒ／ｍｉｎ；另外，精炼效果与精炼时间呈正比关系。
Rotating blade lance is able to disintegrate Ar bubbles into innumerable micro bubbles in molten steel. Micro bubbles are uniformly dispersed in molten steel. While the innumerable micro argon bubbles float to the surface, they clean the molten steel. The new method can remove hydrogen and oxygen. This paper describes the new refining method and different factors influening dehydrogenation rate and deoxidation rate of molten steel. The results show: under the experimental conditions, 50.07 % of dehydrogenation rate, 48.50 % deoxidation rate and 46.20 % desulphurigation rate can be reached for 2～3 min of refining. The optimum Ar flow rate and rotating speed of the lance is 0.25～0.28 m 3/h and 420 r/min respectively. The refining effect is increased with the refining time.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1998年第1期10-14,共5页
Journal of Iron and Steel Research
关键词
旋转桨
微气泡精炼
脱氢率
脱氧率
吹氩
炼钢
rotating blade lance,micro bubbling refining,dehydrogenation rate,deoxidation rate
