Influence of w(MgO) on Viscous Flow Property of High Ti-containing Blast Furnace Slag

doi:10.11901/1005.3093.2015.687

Chinese Journal of Materials Research

2016, Vol. 30

Issue (6): 443-447 DOI: 10.11901/1005.3093.2015.687

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Influence of w(MgO) on Viscous Flow Property of High Ti-containing Blast Furnace Slag

TANG Zhaohui, DING Xueyong, DONG Yue, LIU Chenghong, WEI Guo^**(

)

School of Metallurgy, Northeastern University, Shenyang 110819, China

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TANG Zhaohui, DING Xueyong, DONG Yue, LIU Chenghong, WEI Guo. Influence of w(MgO) on Viscous Flow Property of High Ti-containing Blast Furnace Slag. Chinese Journal of Materials Research, 2016, 30(6): 443-447.

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Abstract

It is well known that the increasing dosage of high Mg-containing V-bearing titanomagnetite, the iron ore was adopted for the iron works at Panxi area of the Southwest China and correspondingly the MgO content (%mass fraction) increased gradually in the blast furnace slag. In view of the above fact, it is meaningful to investigate the influence of MgO content on the viscous flow property of high-Ti blast furnace slag containing high melting point material, such as TiC, TiN, Ti(C, N) etc. Results show that the blast furnace slag containing 20% TiO₂ and 14% A1₂O₃ presents the so call "short slag" characteristic with binary basicity R₂ in a range of 1.0~1.2, of which the melting temperature increases from 1332℃ to 1364℃ with the increasing MgO content from 8% to 12% . At temperatures above 1450℃, the slag viscosity is lower than 0.3 Pas with a good liquidity, which can meet the requirements for the smooth operation of blast furnace.

Key words: synthesizing and processing technics BF slag of high titanium w(MgO) viscosity melting temperature

Received: 30 November 2015

ZTFLH:

TF534.1

Fund: *Supported by National Nature Science Foundation of China No.51174048 and the Fundamental Research Funds for the Central Universities No.N120402011

About author: **To whom correspondence should be addressed, Tel: (024)83687718, E-mail: weig@smm.neu.edu.cn

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	Zhaohui TANG
	Xueyong DING
	Yue DONG
	Chenghong LIU
	Guo WEI

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https://www.cjmr.org/EN/10.11901/1005.3093.2015.687 OR https://www.cjmr.org/EN/Y2016/V30/I6/443

Table 1 Chemical composition of BF slags (%)

Table 2 Experimental compositions (%)

Fig.1 Schematic diagram of RTW-10 integrated instrument for measurement of melt properties

Fig.2 Effect of w(MgO) on the η-T curve

Fig.3 The mineral composition of BF slag

Fig.4 Effect of w(MgO) on the melting temperature viscosity

Fig.5 Effect of w(MgO) on the melting temperature

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