Influence of CaF2 in calcium aluminate-based slag on the degradation of magnesia refractory

被引：28

作者：

Han, Jin Sung ^{[1
]}

Kang, Jin Gyu ^{[1
]}

Shin, Jae Hong ^{[1
,2
]}

Chung, Yongsug ^{[3
]}

Park, Joo Hyun ^{[1
]}

机构：

[1] Hanyang Univ, Dept Mat Engn, Ansan 15588, South Korea

[2] Hyundai Steel Co Ltd, Tech Res Ctr, Dangjin 31719, South Korea

[3] Korea Polytech Univ, Dept Adv Mat Engn, Shihung 15073, South Korea

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 11期

关键词：

Slag; Fluorspar; Degradation; Magnesia refractory; Viscosity; Penetration; IN-SITU OBSERVATION; MGO SOLUBILITY; DISSOLUTION; CORROSION; VISCOSITY; PENETRATION; BEHAVIOR; PARTICLES; MECHANISM; CAO-SIO2;

D O I：

10.1016/j.ceramint.2018.04.145

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High temperature experiments were carried out using an induction furnace to simulate the refractory-slag-metal reactions in conjunction with thermodynamic computations using FactSage7.0 software. The Al-killed steel and the CaO-Al2O3-8SiO(2)-5MgO-xCaF(2) (CaO/Al2O3 = 1.9, x = 0-15 wt%) slag were brought to equilibrium in a magnesia refractory at 1823 K. Moreover, the solubility of MgO in the slag was quantitatively measured using a resistance furnace as a function of CaF2 content and temperature to confirm the thermodynamic driving force of the dissolution of MgO. The penetration depth of a slag into the magnesia refractory increased with increasing CaF2 content, which originated from a decrease in slag viscosity. Also, it was confirmed that MgO grains were dynamically detached from the slag/refractory interface by increasing the content of CaF2.

引用

页码：13197 / 13204

页数：8

共 34 条

[1] Amin M.H., 2006, International Journal of Iron, V3, P34
[2] Chen Y, 2005, CAN METALL QUART, V44, P323
[3] Corrosion of spinel clinker by CaO-Al2O3-SiO2 ladle slag
Cho, MK
Hong, GG
Lee, SK
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (11) : 1783 - 1790
[4] The effectof CaF2on thermodynamics of CaO-CaF2-SiO2(-MgO) slags
Choi, CH
Jo, SK
Kim, SH
Lee, KR
Kim, JT
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2004, 35 (01): : 115 - 120
[5] Ghosh A., 2001, Secondary Steelmaking
[6] Corrosion mechanism and kinetic behaviour of MgO-C refractory material in contact with CaO-Al2O3-SiO2-MgO slag
Jansson, S
Brabie, V
Jönsson, P
[J]. SCANDINAVIAN JOURNAL OF METALLURGY, 2005, 34 (05) : 283 - 292
[7] Slag corrosion of MgO-C refractories during secondary steel refining
Kasimagwa, I.
Brabie, V.
Jonsson, P. G.
[J]. IRONMAKING & STEELMAKING, 2014, 41 (02) : 121 - 131
[8] Structure-Viscosity Relationship of Low-silica Calcium Aluminosilicate Melts
Kim, Tae Sung
Park, Joo Hyun
[J]. ISIJ INTERNATIONAL, 2014, 54 (09) : 2031 - 2038
[9] Effect of FeO and Al2O3 on the MgO Solubility in CaO-SiO2-FeO-Al2O3-MgO Slag System at 1823?K
Kim, Young Jae
Min, Dong Joon
[J]. STEEL RESEARCH INTERNATIONAL, 2012, 83 (09) : 852 - 860
[10] Effect of CaF2 Addition on the Viscosity and Structure of CaO-SiO2MnO Slags
Ko, Kyu Yeol
Park, Joo Hyun
[J]. ISIJ INTERNATIONAL, 2013, 53 (06) : 958 - 965

← 1 2 3 4 →