Preparation and sintering characteristics of coal gangue/loess-based ceramic membrane support
To address the issue of high cost of ceramic membranes, this study utilized gangue and loess as the primary raw materials. CaCO3 was used as the pore-making agent, and carboxymethyl cellulose (CMC) was used as the binder to prepare a gangue/loess-based ceramic membrane support. The physical and chem...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of XPU
2024-04-01
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| Series: | Xi'an Gongcheng Daxue xuebao |
| Subjects: | |
| Online Access: | http://journal.xpu.edu.cn/en/#/digest?ArticleID=1449 |
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| Summary: | To address the issue of high cost of ceramic membranes, this study utilized gangue and loess as the primary raw materials. CaCO3 was used as the pore-making agent, and carboxymethyl cellulose (CMC) was used as the binder to prepare a gangue/loess-based ceramic membrane support. The physical and chemical properties, surface micro-morphology, and phase composition were characterized by SEM, XRD and pressed mercury method. The experimental results indicated that an increase in sintering temperature resulted in the formation of new crystalline phases within the carrier. This led to an increase in both the pure water flux and flexural strength of the support body. Meanwhile, with the extension of the holding time, the particle melting phenomenon is more significant, leading to a decrease in pure water flux but an increase in the flexural strength of the carrier. The gangue/loess-based ceramic membrane carrier showed excellent overall performance under the condition of sintering at a temperature of 1 125 ℃ for 2 hours. The carrier showed a pure water flux of 9 102.44 L/(m2·h·MPa), a flexural strength of 12.317 MPa, an acid/base mass loss rate of 6.64%/0.35%, respectively, an apparent porosity of 38.26% and a porosity of 49%. |
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| ISSN: | 1674-649X |