Abstract: In order to solve the problem that the ceramic membrane preparation cost is too high and it is not easy to be sintered, the tubular loess-based ceramic membrane support with loess as aggregate was prepared by solid-state particle sintering method. The thermal stability, microstructure and crystal phase composition of the sample were analyzed by TG-DTG, SEM and XRD. The performance indexes such as flexural strength, water flux, acid-base corrosion rate, porosity and pore size distribution of the sample were measured. The effects of sintering temperature, holding time and the amount of pore former added on the performance of the support were investigated to explore a greener manufacturing process. The results show that the parameters such as sintering temperature and holding time can effectively adjust and control the grain rearrangement, crystal phase bonding and pore formation during sintering. The crystal phase composition of the support was mainly quartz, spinel and kyanite. When the sintering temperature was 1 030 ℃, holding time for 2 h, adding 4wt% pore-forming agent, the performance of the tubular support was optimal. The surface of the support was intact and the grain bonding was stable, the energy consumption during the firing process was low and there was no secondary pollution. Compare with the same type of research, the median pore diameter of the SiO2-supported ceramic support in this experiment was 2.676 μm, the porosity was (48±0.9)%, the flexural strength of the support was 64.19 MPa, the water flux was 2 590.02 L·(m2·h·MPa)-1, and the acid-base corrosion rate was 0.019/0.013. The support has excellent performance and stable chemical properties.
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2020, Vol. 34 
