Effect of Size of Ferrotitanium on the Melting Behavior and the Yield in the Refining of Interstitial Free Steel by RH De-gasser

被引：8

作者：

Zhang, Chaojie ^{[1
]}

Bao, Yanping ^{[2
]}

Tang, Dechi ^{[1
]}

Ji, Chenxi ^{[1
]}

Wang, Leichuan ^{[3
]}

Cui, Yang ^{[1
]}

Li, Haibo ^{[1
]}

机构：

[1] Shougang Grp Co Ltd, Res Inst Technol, Beijing 100043, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China

[3] Shougang Jingtang United Iron & Steel Co Ltd, Tangshan 063200, Hebei, Peoples R China

来源：

ISIJ INTERNATIONAL | 2018年 / 58卷 / 12期

关键词：

ferrotitanium; size; yield; interstitial free steel; RH de-gasser; ALUMINUM DEOXIDATION EQUILIBRIUM; MOLTEN STEEL; OPTIMIZATION; FLOW; FE; AL;

D O I：

10.2355/isijinternational.ISIJINT-2018-292

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The reduction of ferroalloy consumption used in the steel making is an important approach to high-performance and low-cost steel manufacture. In this paper, the effect of size of ferrotitanium on the yield in the refining of interstitial free steel by RH de-gasser was investigated. Motion trajectory of ferrotitanium after the addition into molten steel in RH de-gasser was investigated through water model experiment. The effect of size of ferrotitanium on the melting time was investigated by numerical simulation. Combining water model experiment with numerical simulation, the loss mechanism and effect of size on the yield of ferrotitanium were discussed. It was found that the size of ferrotitanium larger than a certain value has a great opportunity of floating up to the interface of molten steel and slag in ladle and being oxidized there. Results of industrial experiment verified the mechanism. As for a 300 tons RH de-gasser, Fe-70%Ti alloy whose size was larger than 43 mm had a low yield because of oxidation by the ladle slag.

引用

页码：2262 / 2270

页数：9

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