基于铜尾矿/煤渣/红泥的玻璃陶瓷的结晶、结构-性能演变和重金属凝固

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2024-10-16 DOI:10.1016/j.jnoncrysol.2024.123263

Zhenbei Pan , Qikun Wang , Hongqian Wang , Liusai Yang , Xianhong Zhu , Shengnan Lin , Yingying Lv , Jie Zheng , Wenjiu Duan , Jianlei Liu

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引用次数: 0

摘要

利用德兴铜矿尾渣（DCT）、煤渣（CS）和赤泥（RM）制备固体废弃物衍生玻璃陶瓷。结果表明，当 DCT/CS/RM 质量比为 35/25/40 时，可形成稳定的基底玻璃。对基底玻璃施加不同的结晶温度（780∼980 ℃），发现以 Ca(Mg0.5Al0.5)((Si1.5Al0.5）O6）为主晶相的玻璃陶瓷，其体积密度、吸水率、维氏硬度、抗弯强度、耐酸碱性在 2.747∼2.887 g/cm3、0.010∼0.027 %、6.65∼8.24 GPa、33.89∼118.53 MPa、67.77∼99.97/97.85∼99.98 %。尤其是 GC880，它不仅表现出了最好的性能（体积密度：2.87 g/cm3；吸水率：0.018 %；维氏硬度：0.018 %），而且还表现出了更高的热稳定性：0.018 %；维氏硬度：6.96 GPa；抗弯强度：118.53 MPa；耐酸碱性：99.34/99.97 %），而且对重金属离子（Cr3+/Mn2+/Fe3+/Cu2+/Ni2+）具有固化作用，其中 Mn2+ 和 Fe3+ 的浸出浓度降低率超过 97 %，具有应用于装饰性玻璃陶瓷的潜力。

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Crystallization, structure-property evolution, and solidification of heavy metals of glass-ceramics based on copper tailing/coal slag/red mud

The Dexing copper tailing (DCT), Coal slag (CS) and Red mud (RM) were used to prepare a solid waste-derived glass-ceramics. The result shows that the stable base glass can be formed when DCT/CS/RM mass ration is 35/25/40. Different crystallization temperatures (780∼980 ℃) were implemented on the base glass, and found that the glass-ceramics with Ca(Mg_0.5Al_0.5)((Si_1.5Al_0.5)O₆) as the main crystal phase can be synthesized, whose bulk density, water absorption, Vickers hardness, bending strength, acid/alkali-resistance are in the range of 2.747∼2.887 g/cm³, 0.010∼0.027 %, 6.65∼8.24 GPa, 33.89∼118.53 MPa, 67.77∼99.97/97.85∼99.98 %, respectively. Especially, the GC880 not only shows the best properties (bulk density: 2.87 g/cm³; water absorption: 0.018 %; Vickers hardness: 6.96 GPa; bending strength: 118.53 MPa; acid/alkali-resistance: 99.34/99.97 %), but also has an solidification effect on heavy metal ions (Cr³⁺/Mn²⁺/Fe³⁺/Cu²⁺/Ni²⁺), wherein the leaching concentration reduction rates of Mn²⁺ and Fe³⁺ are over 97 %, which has the potential to be applied in decorative glass-ceramics.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.