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April 23rd, 2024, 6:16am
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   Energy efficient lightweight periclase-magnesium
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Energy efficient lightweight periclase-magnesium
« on: December 25th, 2020, 11:30am »

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Energy efficient lightweight periclase-magnesium alumina spinel castables containing porous aggregates for the working lining of steel ladleshttps://www.hslabrasive.com
This study presents a new lightweight periclase-magnesium alumina spinel castable (LPSC) for the working lining of steel ladles using porous periclase-spinel aggregates to replace conventional dense magnesia aggregates. The porous periclase-spinel aggregates were produced by an in-situ decomposition technique resulting in an apparent porosity of 23.3% and a median pore size of 5.66 μm. Scanning electron microscopy revealed a better porous aggregate/matrix interface bonding in the LPSC, which significantly improved its strength and thermal shock resistance. Additionally, the higher amount of micropores of the porous aggregates in the LPSC absorbed more penetrated slag from the matrix, which enhanced the slag resistance.wholesale aluminium oxide Thus, compared with conventional castables, the LPSC had a lower bulk density of 9.210.8% and a lower thermal conductivity of 18.8% (1000 C) while at the same time a higher strength, thermal shock resistance and slag resistance was achieved.
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