Effects of Three Silicon-based Raw Materials on Properties and Microstructure of MgO-Al-C Materials

doi:10.19691/j.cnki.1004-4493.2021.04.006

China's Refractories ›› 2021, Vol. 30 ›› Issue (4): 30-35.DOI: 10.19691/j.cnki.1004-4493.2021.04.006

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Effects of Three Silicon-based Raw Materials on Properties and Microstructure of MgO-Al-C Materials

HAN Xiaoyuan, SHI Kai, XIA Yi, WANG Peixun, LIU Yang, SHANG Jianzhao

School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

Online:2021-12-15 Published:2021-12-10
About author:Han Xiaoyuan, born in 1995, is studying for her master’s degree in the School of Materials Science and Engineering, Henan University of Technology. Her main research field is MgO-C materials.

Abstract

Abstract:

To improve the thermal shock resistance (TSR) of MgO-Al-C materials, three silicon-based raw materials with low expansion coefficients (Si, fused quartz, and SiC) were introduced to the materials, and their effects on the properties of the materials were studied by XRD and SEM. The results show that: (1) the conversion of Si to SiC, SiO₂ and forsterite at high temperatures improves the hot modulus of rupture (HMOR), TSR and oxidation resistance of the materials, and the optimal Si addition is 6 mass%; (2) fused quartz improves the TSR of the materials, but its high temperature softening and crystal transformation are not conducive to the HMOR and oxidation resistance of the materials, and the optimal addition is 2 mass%; (3) the SiC addition improves the TSR, HMOR and oxidation resistance of the materials; however, when the SiC addition exceeds 10 mass%, there are more micro-cracks in the materials, decreasing the TSR and oxidation resistance.

Key words: magnesia-aluminum-carbon materials, silicon, fused quartz, silicon carbide, thermal shock resistance, hot performance

HAN Xiaoyuan, SHI Kai, XIA Yi, WANG Peixun, LIU Yang, SHANG Jianzhao. Effects of Three Silicon-based Raw Materials on Properties and Microstructure of MgO-Al-C Materials[J]. China's Refractories, 2021, 30(4): 30-35.

Figures/Tables 7

References 23

[1]	Shi Kai, Xia Yi. Evolution of material systems of slide gates for steelmaking. Naihuo Cailiao (Refractories, in Chinese), 2018,52(3):230-236.
[2]	Yang Wengang, Li Hongxia, Liu Guoqi, Ma Tianfei, Qian Fan, Yu Jianbin. Structure design of SEN for high efficiency thin slab continuous casting. Naihuo Cailiao (Refractories, in Chinese), 2015,49(5):332-334, 338.
[3]	Shi Kai, Zhong Xiangchong. Properties and application of Al-Si metal bonded Al₂O₃-C slide plate. Naihuo Cailiao (Refractories, in Chinese), 2007,41(3):205-207, 219.
[4]	Shantanu K Behera. Bhagirath Mishra. Strengthening of Al₂O₃-C slide gate plate refractories with expanded graphite. Ceramics International, 2015,41(3):4254-4259.
[5]	Wang Heng, Li Yawei, Zhu Tianbin, Fu Zhengyi. Strengthening of Al₂O₃-C slide gate plate refractories with microcrystalline graphite. Ceramics International, 2017,43(13):9912-9918.
[6]	Li Shuxin, Duan Feng, Ren Xuehua, Ma Aiqiong, Li Bin. Research status and outlook of Al₂O₃-C slide gates for continuous casting. Bulletin of the Chinese Ceramic Society, 2019,38(9):2847-2854, 2864.
[7]	Jinjin Ban, Chaojie Zhou, Long Feng, Quanli Jia, Xinhong Liu, Junhua Hu. Preparation and application of ZrB₂-SiCw composite powder for corrosion resistance improvement in Al₂O₃-ZrO₂-C slide plate materials. Ceramics International, 2020,46(7):9817-9825.
[8]	Jin Congjin, Li Zeya. Performance and use of alumina zirconia carbon slide plate for Baosteel ladle. Naihuo Cailiao (Refractories, in Chinese), 2004,38(5):359-360.
[9]	Wang Zihao, Zhang Jing, Wang Zhen, Ling Yongyi, Gao Jinxing, Liu Xinhong. Research progress of Al₂O₃-ZrO₂-C slide plate material. Naihuo Cailiao (Refractories, in Chinese), 2021,55(3):264-271, 276.
[10]	Yao Jinfu, Shen Zhongming, Jin Congjin. Corrosion analysis of calcium treated steel on submerged nozzle. Naihuo Cailiao (Refractories, in Chinese), 2014,48(5):377-378.
[11]	Zhou Chunquan, Hang Guangzhen. Calcium treatment of molten steel and its corrosion to slide plates. Steelmaking (in Chinese), 1999(6):34-37.
[12]	Wang Fucheng. Production of magnesia slide gates for sliding nozzles. Foreign Refractories (in Chinese), 1994(9):38-41.
[13]	Wang Cheng, Zhang Wei, Zhang Shujun. Development of magnesia spinel slide plates. Naihuo Cailiao (Refractories, in Chinese), 1998(5):283-284.
[14]	Wei Zhongxian, Li Baoying, You Peiyu, Han Haiyan, Li Li. Development and application of fired magnesia spinel slide plate. Naihuo Cailiao (Refractories, in Chinese), 2002,36(4):229-230.
[15]	Wei Zhongxian, Ouyang Benhui. Development and application of magnesia-based composite slide plate. Naihuo Cailiao (Refractories, in Chinese), 2001,35(4):210-212.
[16]	Qiang Gu, Guoqi Liu, Hongxia Li, Quanli Jia, Fei Zhao, Xinhong Liu. Synthesis of MgO-MgAl₂O₄ refractory aggregates for application in MgO-C slide plate. Ceramics International, 2019,45(15):24768-24776.
[17]	Wei Zhongxian, Han Xiangming, Huang Tianjie, Luo Yan, Luo Deping. Development of aluminum bonded magnesia-spinel-carbon slide plate. Naihuo Cailiao (Refractories, in Chinese), 2007,41(6):457-459, 464.
[18]	Qu Jindong, Wei Heyi, Shi Deman, Gu Xiaohua. Study and application of magnesium aluminum carbon slide gate for steel ladle. Refractories & Lime (in Chinese), 2020,45(2):17-19.
[19]	Ma Teng, Liu Xinhong, Zhu Xiaoyan, Feng Long. Progress in research and application of Al-Si composite slide plates. Naihuo Cailiao (Refractories, in Chinese), 2014,48(3):231-235.
[20]	Liu Xinhong, Zhong Xiangchong. High temperature mechanical properties of Al and Si incorporated low carbon Al₂O₃-C slide plate materials. Naihuo Cailiao (Refractories, in Chinese), 2013,47(1):6-9.
[21]	Han Bingqiang, Dai Gang, Li Nan. Effects of fused quartz on properties of Al₂O₃-SiC-C Castable. Industrial Furnace, 2006,4(5):33-35.
[22]	Yan Guangzhou, Qian Fan, Yang Wenguang, Liu Guoqi. Effects of additives on properties of MgO-C nozzles. Naihuo Cailiao (Refractories, in Chinese), 2018,52(2):136-139.
[23]	Mao Xuesong, Gu Huazhi, Wang Houzhi. The effect of fused silica addition on thermal shock resistance of MgO material. Rare Metal Materials and Engineering (in Chinese), 2007,4(S2):358-361.

Samples	S0	S1	S2	S3	S4	S5	S6	S7	S8	S9
CMOR	14.5	17.3	15.9	16.1	14.6	13.4	12.9	14.7	19.1	17.9
HMOR	26.5	30.6	30.3	31.0	27.9	20.6	18.3	29.2	27.9	28.2

Samples	S0	S1	S2	S3	S4	S5	S6	S7	S8	S9
CMOR	14.5	17.3	15.9	16.1	14.6	13.4	12.9	14.7	19.1	17.9
HMOR	26.5	30.6	30.3	31.0	27.9	20.6	18.3	29.2	27.9	28.2

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Effects of Three Silicon-based Raw Materials on Properties and Microstructure of MgO-Al-C Materials

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Figures/Tables 7

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Raw materials		S0	S1	S2	S3	S4	S5	S6	S7	S8	S9
98 sintered magnesia	3-1 mm	50	50	50	50	50	50	50	50	50	50
98 fused magnesia	1-0 mm	15	13	11	9	13	11	9	10	5	0
98 fused magnesia	≤0.074 mm	27	27	27	27	27	27	27	27	27	27
Si	0.5-0.2 mm	0	2	4	6	0	0	0	0	0	0
Fused quartz	0.4-0.2 mm	0	0	0	0	2	4	6	0	0	0
SiC	1-0 mm	0	0	0	0	0	0	0	5	10	15
Al powder	≤0.045 mm	6	6	6	6	6	6	6	6	6	6
Carbon black N220	25-20 nm	2	2	2	2	2	2	2	2	2	2
Thermoset phenolic resin (extra adding)		3	3	3	3	3	3	3	3	3	3

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