This paper presents a method of water filtration using composite filters based on bentonite powder, alumina ceramic particles and iron metal particles. The base of the composite material was developed from bentonite and alumina ceramic particles. Various percentages of iron metal particles were added to the base matrix of the composite and there were obtained several groups of materials. They were compacted in a metal mould to make cylindrical raw material samples. The samples were sintered at 1100 °C. There were obtained ceramic filters of Φ = 16 mm diameter and 14-16 mm high. In order to meet the purpose of the research, the ceramic filters were characterised in terms of compressive strength and there were determined some dependencies between their structure and properties. A laboratory installation was used to demonstrate the filtration of the solid components from water by means of CWF composite filters. Both parts of the filter were subjected to the action of the pressure generated by the centrifugal pump within the installation, which led to the displacement of the fluid. There was demonstrated the ability to retain the solid components in water by means of these ceramic composite filters.

The paper presents the results of a study on the compressive behaviour of ceramic composite made with bentonite matrix. During the study, samples were made of ceramic composite, of filter type, cylindrical with a diameter of 16 mm and heights between 14-16 mm. To achieve the porous structure, the matrix was reinforced with ceramic powders of Al2O3 and SiC, and to control the pore size, metal powders of Al and Fe were used in percentages between 3-12%. The compaction of the samples thus obtain was performed by mechanical pressing in a metal mould on a universal testing machine with a force F=20 kN. In order to test them in compression, the samples were sintered in an oven at T=1100°C in a heat treatment oven after a predetermined treatment cycle. For each test, the diagram was registered with the help of the software from the machine’s equipment, respectively the behaviour of the different sintered ceramic composite samples. The results thus obtained were analysed in correlation with the composition of the tested samples. In conclusion, dependencies were established between the type, nature and ratio of the constituent samples of ceramic composite and their behaviour at the request of compression.