Paper Title:
Control of Nitrogen in Al-Killed Steel by Converter Flow
  Abstract

This paper analyses and studies control of nitrogen on Al- killed steel using the methods of production experiment in the flow of molten iron pretreatment - 180t converter - LF refining – continuous caster. Results show that adding aluminum final deoxidization should be divided into two steps: Firstly, putting some aluminum into molten steel after adding alloy in the process of tapping of molten steel, making the [O] reduce to 6 ~ 7ppm. Secondly, adding aluminum wire in LF-refining making [O] and [N] reach the required values. LF-refining should try to shorten operating time and original mission ought to be finished ahead. Desulfurization should be completed in the flow of molten iron pretreatment and the tapping of molten steel. Process of removal inclusions should be accomplished by adding slag during tapping of molten steel and blowing-mixing. LF-refining has scarcely any slagging task, it only needs to complete adjustment ingredient task. Alloy and carburant which contains extremely low nitrogen should be choosed, so that nitrogen in molten steel can be steadily controled below 30ppm.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
1055-1058
DOI
10.4028/www.scientific.net/AMR.295-297.1055
Citation
S. M. Wang, J. H. Zhang, H. M. Liu, "Control of Nitrogen in Al-Killed Steel by Converter Flow", Advanced Materials Research, Vols. 295-297, pp. 1055-1058, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: O.A. El Hady, Amer E. Amer, I.S. El Mahallawi, Y.S. Shash
Abstract:At the Egyptian Iron and Steel Company, attention is constantly focused on improving basic steel making practice with the aim of improvement...
85
Authors: Gang Qiang Jin, Shu Huan Wang, Yu Feng Guo, Xin Sheng Liu
Abstract:The experimental results on high nitrogen steels refining with high-pressure and bottom-blowing nitrogen were analyzed by the theories of...
445
Authors: Jian Tao Ju, Zhen Lin Lu, Min Juan Zhang, Zhao Hui Zhang, Jun Yang
Abstract:The hydrogen content was measured by HYDRIS hydrogen analyzer during ladle furnace (LF) refining process aiming to test the regular pattern...
353
Authors: Jun Chen
Chapter 2: Ferrous Metallurgy
Abstract:At present, the nitrogen content in aimed molten steel is 18.32ppm on average in PISCO(Panzhihua Iron & Steel Co.), and there is big...
205
Authors: Ai Min Gao, Xin Kuo Fang, Shu Huan Wang
Chapter 2: Ferrous Metallurgy
Abstract:The high nitrogen steel is alloy steel whose nitrogen content is more than solubility limit at atmospheric pressure[1]. Bottom-blowing...
202