科研之友
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摘要
Mixtures of iron phosphate glass granules and BaSO4 powder, a simulated main sludge component, were melted in air using a platinum crucible. The quenched glass samples consisted mainly of oxide constituents, due to the decomposition of BaSO4 during the heating and melting processes. Thermal stability against crystallisation for the glass samples was evaluated using differential thermal analysis, according to the existence of an exothermic crystallisation peak and the temperature difference between the glass transition and onset of crystallisation temperatures. Water durability was determined by the weight loss per unit surface area after immersion in hot water at 120 degrees C for 72 h. Phosphate network species and chemical bonding were characterised by Raman spectroscopy. Glass compositions with the simulated sludge component were optimised in terms of the thermal stability and the water durability, and characterised according to the O/P ratio.
- 出版日期2016-10
