Calcinations Regulation Effect on Activity and Hydration of MgO from Magnesite Tailings

Abstract:

List The active of MgO was produced from magnesite tailings under certain conditions. The effect of calcinations temperature on the crystal structure of MgO was analyzed by XRD and SEM. Crystal particle of MgO was calculated according to Scherrer formula. The microstructural differences between the MgO agglomerates were examined by SEM at different temperatures. The activity of MgO was evaluated though conductivity which was measured by the conductivity meter. The activity of MgO effected by calcinations temperature was studied. The result showed that magnesite tailings was fully decomposed when that was calcined for 60min with the calcinations temperature of 1050°C, and the activity of MgO was very high. Established a hydration and expansion model of MgO is proposed to explain the activity of MgO.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 2559-2563
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.2559
• Online since: September 2013
• Authors: Hua Rong Shen, Yang Jiang, Wei Zhong He
• Keywords: Activity, Calcinations, Hydration and Expansion Model, MgO, Micro-Morphology

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