Fabrication of High-Performance Porous Thermal Insulating Ceramics via High-Proportion Utilization of Industrial Solid Wastes
Source abstract
Abstract
Large-scale high-value utilization of industrial solid waste is urgently required worldwide. Porous ceramics prepared from single-type solid waste face great limitations in balancing mechanical properties and thermal insulation performance. In this work, various types of industrial solid wastes—red mud, waste electric porcelain, and coal gangue—were fully adopted as primary raw materials, while SiC was employed as a foaming agent to prepare porous ceramics. Results show that at 3% SiC addition and 1140 °C sintering temperature, the apparent porosity of the ceramics reaches to 21.8%, with thermal conductivity of 0.08 W/(m·K). Moreover, favorable pore-size distribution and desirable crystalline phases (Mg–Fe–Al spinel and sodium calcium feldspar) are obtained under this optimal condition, accompanied by a favorable compressive strength of 2.91 MPa, making it a promising low-cost, high-performance high-temperature insulation material.
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Research context
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mining, Liaoning Technical University, Fuxin 123000, China
China Coal Science and Technology Ecological Environment Technology Co., Ltd., Beijing 100013, China
School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
Funding
University Synergy Innovation Program of Anhui Province · Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology
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