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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Prediction of chloride solubility in CaO-Al2O3-SiO2 glass systems
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Prediction of chloride solubility in CaO-Al2O3-SiO2 glass systems

机译：CaO-Al2O3-SiO2玻璃体系中氯化物溶解度的预测

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It is known that fly ash from municipal waste incinerators is particularly problematic because it contains a significant concentration of heavy metals and chloride. One of the methods for treating chloride is to entrap it in a glassy slag, which is produced by melting bottom ash with fly ash. The main components of the glassy slag are SiO2, Al2O3 and CaO. However, only a limited amount of chloride can be retained in the glass, and the relationship between glass structure and chloride solubility is still unclear. The present study was intended to examine the solubility of chloride in slag-like CaO-Al2O3-SiO2 glass systems in which CaCl2 was substituted for CaO. Glass compositions with varying non-bridging oxygen (NBO) content were investigated. It was found that NBO in glass has a significant influence on glass properties. The solubility of chloride was also found to strongly relate to the NBO content. It was proposed that chloride ions occupy the site around NBO and the chloride solubility should be determined by the NBO content. The maximum chloride content was found to agree with this glass structure model. This study could allow us to predict the maximum chloride content that can be dissolved in the slag. (C) 2004 Elsevier B.V. All rights reserved.
机译：众所周知，来自城市垃圾焚化炉的粉煤灰特别成问题，因为它含有大量的重金属和氯化物。处理氯化物的方法之一是将其截留在玻璃状炉渣中，该炉渣是通过将底灰与粉煤灰熔融而产生的。玻璃渣的主要成分是SiO2，Al2O3和CaO。然而，玻璃中只能保留有限量的氯化物，并且玻璃结构与氯化物溶解度之间的关系仍然不清楚。本研究旨在检查氯化钙在渣状CaO-Al2O3-SiO2玻璃系统中的溶解度，其中CaCl2代替CaO。研究了具有不同非桥连氧（NBO）含量的玻璃组合物。发现玻璃中的NBO对玻璃性能具有显着影响。还发现氯化物的溶解度与NBO含量强烈相关。提出氯离子占据NBO周围的位置，并且氯化物溶解度应由NBO含量确定。发现最大氯化物含量与此玻璃结构模型一致。这项研究可以使我们预测可溶解在炉渣中的最大氯化物含量。 （C）2004 Elsevier B.V.保留所有权利。

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