Affiliation:
1. School of Chemical Engineering Anhui University of Science and Technology Huainan 232001 China
2. School of Earth and Environment Anhui University of Science and Technology Huainan 232001 China
Abstract
AbstractIron compounds addition on the melt is a more complex issue. Uncertainties in industrial applications are caused by crystallization and depolymerization phenomena. Most of the current studies have discussed FeO and Fe2O3, ignoring the influence of FeS in the glass structure. This study designed and simulated artificial ash close to coal ash to interact with the glass melt at high temperatures. Coulomb titration, X‐ray diffraction (XRD), and Raman analyses were carried out to determine the percentage and composition of crystalline and noncrystalline materials in the glass. Samples of FeS‐Fe2O3 were subjected to the enumeration of the glass structure and quantitative calculations of the degree of polymerization. The results showed that 15‐wt% Fe2O3 promoted crystallization in the system and accelerates the depolymerization of FeS. The introduction of FeS increases the amorphous materials, and the obtained amorphous materials are Si dominated network structures and [SiO4]‐[FeO4]‐[SiO4] clusters. The network tends to change from [FeOn] and [AlO4] to [SiO4]. In addition, aluminosilicate may enter FeS particles and unreacted FeS may deposit on the aluminosilicate surface.
Subject
Waste Management and Disposal,Renewable Energy, Sustainability and the Environment,General Chemical Engineering