Abstract
Industrial solid residues and poor quality clay as main raw material were used to prepare porous ceramic balls by ceramics process with coal and wood powder as pore-forming additive to improve the porosity of the ceramics ball. Effect of pore-forming additive on the properties of ceramic ball was investigated. The phase composition and section morphology of the ceramics balls was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The apparent porosity and crushing force of the ceramic balls were tested by Archimedes hydrostatic weighing method and crushing strength tester respectively. The tested results showed that the apparent porosity of the porous ceramic balls mainly influenced by species and addition amount of the pore-forming additive. The apparent porosity increases with the adding of the pore-forming additive. The apparent porosity and crushing force of the optimized porous ceramic balls was 49.68% and 1.17 kN respectively, which is a potential candidate used for waste water filtration.
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