Effect of Calcium Chloride Addition on Properties of Corundum Spinel Castable

doi:10.19691/j.cnki.1004-4493.2020.04.009

China's Refractories ›› 2020, Vol. 29 ›› Issue (4): 46-49.DOI: 10.19691/j.cnki.1004-4493.2020.04.009

• Original article • Previous Articles

Effect of Calcium Chloride Addition on Properties of Corundum Spinel Castable

GUO Hongxiang¹^,²^,^*(), SUN Xiaogai¹, JIA Quanli¹, LI Xueyan², LIU Xinhong¹

1 Henan Key Laboratory of High Temperature Functional Ceramics, Zhengzhou University,Zhengzhou 450052, China
2 Henan Hongda Furnace Industry Co., Ltd., Zhengzhou 450000, China

Online:2020-12-15 Published:2020-12-15
Contact: GUO Hongxiang
About author:Guo Hongxiang, born in 1978, is now working in Henan Hongda Furnace Industry Co., Ltd., engaged in the research and development and application of monolithic refractories and functional refractories for many years. He has rich experience in the application of monolithic refractories in oxidized pellet rotary kilns, and has applied for more than 10 patents.

Abstract

Abstract:

Corundum spinel castable was prepared using tabular corundum as aggregates, white fused corundum powder, spinel powder and alumina powder as the matrix, pure calcium aluminate cement as a binder, and extra adding calcium chloride (0, 1%, 2%, and 3%, by mass). The effects of the CaCl₂ addition on the cold physical properties, the hot strength, the thermal shock resistance and the microstructure of the castable were studied. The results show that, for the corundum spinel castable fired at 1 550 ℃, with the increase of the CaCl₂ addition from 0 to 3%, the cold strengthes first increase, then decrease, the apparent porosity increases, the volume density decreases, and the linear change rate first decreases and then increases, while the overall change is not significant; however, the hot modulus of rupture and the thermal shock resistance are obviously improved. This is mainly due to that, CaCl₂ is evenly distributed in the castable in the form of solution, and reacts with Al₂O₃ to form small flake CA₆ crystals, which evenly distributed in the sample matrix strengthening and toughening the material.

Key words: corundum spinel castable, calcium chloride, calcium hexaluminate, strength, thermal shock resistance

GUO Hongxiang, SUN Xiaogai, JIA Quanli, LI Xueyan, LIU Xinhong. Effect of Calcium Chloride Addition on Properties of Corundum Spinel Castable[J]. China's Refractories, 2020, 29(4): 46-49.

Figures/Tables 5

Fig. 1 Effect of CaCl2 addition on cold physical properties of specimens

Fig. 2 Effects of CaCl2 addition on HMOR and thermal shock resistance of specimens

Fig. 3 XRD patterns of specimens fired at 1 550 ℃

Table 1 Phase composition of specimens fired at 1 550 ℃ /mass%

Phase	Specimen 0^#	Specimen 1^#	Specimen 2^#	Specimen 3^#
Corundum	85.9	77.3	73.3	68.2
MA	7.3	7.7	6.0	6.4
CA₆	6.8	15.0	20.6	25.4

Fig. 4 SEM photos of specimens fired at 1 550 ℃

References 12

[1]	Shoji Eto, Katsufumi Jono, Junichiro Mori, Tetsuo Hirota, Shoichi Hitomi, Seijiro Tanaka, Takuzo Mafune. Effect of CaO content on the properties of alumina-spinel castable for steel ladle. Proceedings of UNITECR’93, Sao Paulo, Brazil, 1993: 1289-1300.
[2]	Hou Xiaojing, Huang Zhilin, Li Zhigang. Effect of spinel addition on properties of corundum-spinel castables. Naihuo Cailiao (Refractories, in Chinese), 2017, 51(6): 449-451.
[3]	Shoichi Itose, Michifumi. Nakashima, Toshihiro Isobe, Isamu Shimizu. Improvement in the durability of alumina-spinel steel ladle castable containing spinel fine powder. Taikabutsu Overseas, 2002, 22(1): 26-30.
[4]	Khalil N M. Heat resistance and thermomechanical behaviour of ultralow and zero cement castables. British Ceramic Transactions, 2004, 103(1): 37-41.
[5]	Xia Zhongfeng, Wang Zhoufu, Wang Xitang, Liu Hao, Ma Yan. Phase composition and microstructure evolution of corundum-spinel castable matrix. Naihuo Cailiao (Refractories, in Chinese), 2016, 50(6): 440-443.
[6]	Chen-Feng Chan, Yung-Chao Ko. Effect of CaO content on the hot strength of alumina-spinel castables in the temperature range of 1 000 °C to 1 500 °C. Journal of the American Ceramic Society, 1998, 81(11): 2957-2960.
[7]	Jia Quanli, Wu Ran, Ye Fangbao. Effect of cement, ZrO₂ and TiO₂ cement on the properties of alumina spinel castables. Proceeding of 6^th International Symposium on Refractories, Zhengzhou, China, 2012: 191-194.
[8]	Jia Quanli, Ye Fangbao, Zhong Xiangchong. Effects of calcium aluminate cement addition on the properties of alumina-spinel castables. Bulletin of the Chinese Ceramic Society, 2008, 27(6): 1104-1108.
[9]	Zhan Jialin, Jia Quanli, Xiong Wei, Qian Xueyi, Ye Fangbao. Effect of calcium aluminate cement addition on properties of alumina-spinel well blocks of ladle purging plugs. Naihuo Cailiao (Refractories, in Chinese), 2013, 47(5): 351-354.
[10]	Jia Quanli, Ye Fangbao, Zhong Xiangchong. Effects of cement addition on the slag resistance of alumina-spinel castable. Journal of Zhengzhou University (Engineering Science), 2011, 32(1): 43-46.
[11]	Li Zhigang, Ye Fangbao. Effect of nano calcium carbonate on properties of corundum-spinel castables. Naihuo Cailiao (Refractories, in Chinese), 2012, 46(6): 406-409.
[12]	D. L. Bish, S. A. Howard. Quantitative phase analysis using the Rietveld method. Journal of Applied Crystallography, 1988, 21(2): 86-91.

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Effect of Calcium Chloride Addition on Properties of Corundum Spinel Castable

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