1. Effect of water-soluble magnesium lactate on the volume stability of refractory castables containing calcium aluminate cement.
- Author
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Liu Guo, Yunhe Fu, Zongqiang Zhao, Junyan Cui, Yuandong Mu, Quanli Jia, and Liugang Chen
- Subjects
CALCIUM aluminate ,MAGNESIUM ,LACTATES ,SPINEL ,LACTATION ,CEMENT - Abstract
A kind of organic magnesium salt, water-soluble magnesium lactate, was used as the MgO-precursor in new forms to identify the particular impact of additive dispersity on properties of calcium aluminate cement (CAC)-bonded castables, especially the volume stability. Magnesium lactate could dissolve in water in the mixing process, distribute uniformly, and decompose during heating, providing space for counterbalancing the expansion from in-situ calcium aluminates and MgAl
2 O4 spinel generation. Hence, in this study, CAC-bonded castables containing 0-1.2 wt% magnesium lactate were prepared. The volume stability and thermo-mechanical strength of castables were tested. Results show that the dissolution of magnesium lactate in water distinctly enhances the volume stability of castables. To understand the underlying mechanism of water-soluble magnesium lactate on the samples, phase compositions and microstructure development of castable matrices were examined. [ABSTRACT FROM AUTHOR]- Published
- 2022
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