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.
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