Preparation of ultra-light xonotlite thermal insulation material using carbide slag |
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Authors: | Fei Liu Lingke Zeng Jianxin Cao and Jing Li |
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Affiliation: | (1) School of Energy and Power Engineering, Shandong University, No. 17923 Jingshi Road, Jinan, 250061, China |
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Abstract: | Using carbide slag as the calcareous materials, xonotlite thermal insulation material was successfully prepared via dynamic
hydrothermal synthesis. The experimental results show that the xonotlite thermal insulation material is made up of large numbers
of “chestnut bur shape” particles. Optimum conditions of calcination temperature of carbide slag, synthesis reaction temperature
and time, stirring rate, CaO/SiO2 mol ratio, water/solid weight ratio, amount of fiberglass, molding pressures, dryness temperatures and the presence of dispersant
(glycol and polyvinyl alcohol) favor the preparation of xonotlite thermal insulation material. The evaluation of xonotlite
thermal insulation material reveals that the product is ultra-light and excellent in physical performances. Such a little
amount of impurities in carbide slag has no effect on the phase, morphology, stability at high temperature and physical performances
of products. |
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Keywords: | |
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