管式多孔黄土陶瓷膜支撑体的制备和性能表征

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Abstract The new single-tube loess ceramic membrane supports were fabricated by rolling and sintering from α-Al₂O₃ as the external aluminum source, MgO as the sintering aid, CMC as pore former and loess as aggregate. In this work, the orthogonal experiment was designed to study the effect of α-Al₂O₃, MgO and CMC on the performance of the support. The results show that the order of factors affecting the water permeability of the support is CMC>α-Al₂O₃>MgO, and the order of factors affecting the bending strength of the support is α-Al₂O₃>CMC>MgO. When adding mass fraction of 15% α-Al₂O₃, 6%CMC, 0.5%MgO, the support prepared by holding for 3 h at 1 180 ℃ has the best performance, the flexural strength is 55.66 MPa, and the porosity is 28.7%, pure water flux is 83.63 m³/(m·h·bar), and the median pore size is 19.88 μm, in which the main peak pore volume accounts for more than 95% of the total pore volume, and the main peak pore size distribution ranges from 8.54-52.23 μm. The pore size distribution range is wide with a porosity of 28.7%. The main crystalline phases are quartz, feldspar, mullite, cordierite and cristobalite.

Key words： orthogonal test ceramic membrane loess support mullite

Received: 23 April 2019 Published: 14 November 2019

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	Articles by authors
	MENG Feng
	YANG Bowen
	TONG Zhi
	XING Jing
	SUN Xiaojuan
	WANG Lei

Cite this article:

MENG Feng,YANG Bowen,TONG Zhi, et al. Preparation and characterization of tubular porous loess ceramic membrane support[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 437-443.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I5/437

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