Ayala Valderrama Diana M, Gómez Cuaspud Jairo A, Roether Judith A, Boccaccini Aldo R
Grupo de Física de Materiales, Universidad Pedagógica y Tecnológica de Colombia. Av Central del Norte 39-115, 150003 Tunja, Boyacá, Colombia.
Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
Materials (Basel). 2019 Jun 25;12(12):2032. doi: 10.3390/ma12122032.
Developments in the field of materials science are contributing to providing solutions for the recycling of industrial residues to develop new materials. Such approaches generate new products and provide optimal alternatives to the final disposal of different types of industrial wastes. This research focused on identifying and characterizing slag, fly ash, and glass cullet from the Boyacá region in Colombia as raw materials for producing glass-ceramics, with the innovative aspect of the use of these three residues without the addition of nucleating agents to produce the glass-ceramics. To characterize the starting materials, X-ray diffraction (XRD), X-ray fluorescence (XRF), and Scanning Electron Microscopy (SEM) techniques were used. The results were used to evaluate the best conditions to produce mixtures of the three waste components and to determine the specific compositions of glass-ceramics to achieve products with attractive technical properties for potential industrial applications. The proposed mixtures were based on three compositions: Mixture 1, 2, and 3. The materials were obtained through thermal treatment at 1200 °C in a tubular furnace in accordance with the results of a comprehensive characterization using thermal analysis. The microstructure, thermal stability, and structural characteristics of the samples were examined through SEM, differential thermal analysis (DTA), and XRD analyses, which showed that the main crystalline phases were diopside and anorthite, with a small amount of enstatite and gehlenite. The obtained glass-ceramics showed properties of technical significance for structural applications.
材料科学领域的发展有助于为工业废渣的回收利用提供解决方案，以开发新型材料。此类方法可生产新产品，并为不同类型工业废物的最终处置提供最佳替代方案。本研究聚焦于鉴定和表征来自哥伦比亚博亚卡地区的矿渣、粉煤灰和碎玻璃，将其作为生产微晶玻璃的原材料，其创新之处在于使用这三种废渣，无需添加成核剂即可生产微晶玻璃。为了表征起始材料，使用了X射线衍射（XRD）、X射线荧光（XRF）和扫描电子显微镜（SEM）技术。研究结果用于评估制备三种废料成分混合物的最佳条件，并确定微晶玻璃的具体成分，以获得具有潜在工业应用吸引力的技术性能的产品。所提出的混合物基于三种成分：混合物1、2和3。根据热分析综合表征结果，将材料在管式炉中于1200℃进行热处理获得。通过SEM、差示热分析（DTA）和XRD分析对样品的微观结构、热稳定性和结构特征进行了研究，结果表明主要晶相为透辉石和钙长石，还有少量顽火辉石和钙铝黄长石。所获得的微晶玻璃显示出对结构应用具有技术意义的性能。
