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Abstract
Designed composition of ceramic mass for high-alumina porous permeable ceramic material for disperse micro hydro systems. The filler used alumina fraction 100–250 microns, as a binder system studied refractory clay Veselovskaya–medicalglass–gibbsite. Formation of material carried by dry pressing at a pressure 60 MPa, the temperature of synthesis was 1250–1350 °C, holding at the maximum temperature – 1 h. The processes occurring in the binder during sintering was investigated. The effect of the sintering temperature of the material, the amount of binder composition on the acid resistance, mechanical strength, porosity and permeability of open high-alumina permeable porous material was investigated. The structure and phase composition of the submissions received, the average pore diameter was 10 mm, it can be used for microfiltration of liquids and gases, the material is homogeneous at the macro level, the structure is represented by an extensive network of channels of pores. Phase composition is represented mainly corundum and mullite.
The material has the following set of physico-chemical properties: open porosity 46.41–49.74%, acid resistance 99.24–99,65%, mechanical strength in compression 6.41–12.53 MPa, permeability 5.32·10−8 m2.
Acknowledgements
The authors would like to thank the financial support of the Belarusian Republican Foundation for Fundamental Research (project No. T15LIT-011). This work has been supported by the Research Council of Lithuania (project No. TAP-LB-15/2015).
Additional information
Notes on contributors
Yurij G. Pauliukevich
Yurij G. Pauliukevich. Assoc. Prof. at the Department of Glass and Ceramic Technology, Belarusian State Technological University. Research interests: ceramic, ceramics technology, glass technology, ceramic durability, frost resistance of ceramic.
Olga Kizinievič
Olga Kizinievič. PhD at the Research Institute of Building materials and products, Vilnius Gediminas Technical University. Research interests: ceramic, ceramics technology, glass technology, ceramic durability, frost resistance of ceramic.
Yurij A. Klimash
Yurij A. Klimash. Assoc. Prof. at the Department of Glass and Ceramic Technology, Belarusian State Technological University. Research interests: ceramic, ceramics technology, glass technology, ceramic durability, frost resistance of ceramic.
Mikalai M. Hundzilovich
Mikalai M. Hundzilovich. PhD student at the Department of Glass and Ceramic Technology, Belarusian State Technological University. Research interests: ceramic, ceramics technology, glass technology, ceramic durability, frost resistance of ceramic.
Giedrius Girskas
Giedrius Girskas. PhD at the Research Institute of Building Materials and Products, Vilnius Gediminas Technical University. Research interests: concrete durability, frost resistance of concrete, concrete with additives, synthetic zeolites in concrete.