Rheological and Sintering Properties of Two Kinds of Corundum-spinel Micropowders

doi:10.19691/j.cnki.1004-4493.2022.04.002

China's Refractories ›› 2022, Vol. 31 ›› Issue (4): 7-11.DOI: 10.19691/j.cnki.1004-4493.2022.04.002

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Rheological and Sintering Properties of Two Kinds of Corundum-spinel Micropowders

WANG Jingran^1*, CHEN Xinming¹, KE Changming¹, ZHANG Jinhua¹, LIU Xuexin^1,2, LI Wen²

1 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2 Hubei Smile New Material Co., Ltd., Hong’an 438400, China

Online:2022-12-15 Published:2022-12-23
Contact: * e-mail: wjrjob@163.com
About author:Wang Jingran, born in 1986, is an associate professor. Currently, she is working in the State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology. Her main research fields are refractories, inorganic nonmetallic materials and cement materials.

Abstract

Abstract: For the proper use of micropowders in castables, slurries and fired samples were prepared with two kinds of corundum-spinel micropowders (D and G). The effects of the solid content and disperser WSM-R1 on the rheological properties of the slurries were studied. The sintering properties and the slag corrosion resistance of the fired samples were also researched. The results show that: the slurries all show pseudoplastic rheological characteristics. With the same solid content, the slurry with micropowder G has higher initial viscosity than that with micropowder D. Disperser WSM-R1 significantly reduces the initial viscosity of the two slurries and plays a more obvious dispersing effect on the slurry with micropowder G. The fired sample with micropowder G has higher bulk density, lower apparent porosity and better corrosion resistance than that with micropowder D.

Key words: corundum-spinel micropowder, rheological property, sintering property, slag corrosion resistance

WANG Jingran, CHEN Xinming, KE Changming, ZHANG Jinhua, LIU Xuexin, LI Wen. Rheological and Sintering Properties of Two Kinds of Corundum-spinel Micropowders[J]. China's Refractories, 2022, 31(4): 7-11.

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Rheological and Sintering Properties of Two Kinds of Corundum-spinel Micropowders

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