Effects of waterjet cutting waste addition on properties of building ceramics

Abstract

The purpose of the paper is to investigate the possibility of using wastes of waterjet metal cutting in the manufacture of building ceramics. A complex study of the composition and properties of the abrasive and hydroabrasive cutting wastes was carried out. The behavior of waste in the composition of the ceramic mass and the ceramic body was investigated. Positive results of the effect of addition of waste on the properties of ceramics were obtained on two types of polymineralic argillaceous raw materials: increase of strength at the optimum content of waste in the mixture, reduction of air and fire shrinkage in all compositions with waste content, possibility of varying the color of products, etc. The similarity of the chemical composition of argillaceous raw materials and wastes was established: oxides of iron, silicon and aluminum are predominant. Electron microscope research has demonstrated that the introduction of waste modifies the structure of the ceramic shard, but does not affect its uniformity. The obtained results allowed to draw conclusions about the possible use of wastes of waterjet metal cutting in the production of ceramics: as a fluxing agent – flux, component for volumetric staining, thinning agent.

Utilization of disperse metalworking wastes in the building ceramic production

“…We found out that the wastes finest fraction includes the cut materials particles. This is proved with the electron microscopic study results, performed on raster electron microscope FEIQUANTA 200 [6,7].…”

“…In the course of the overall study of the wastes dry part we received the following results: true density 3.92 g/cm³, bulk density -2.157 g/cm³. Granulometric composition, determined on the standard sieve set according to GOST 8735-88, is presented mainly by two fractions: fine (0.16÷0.315 mm -70.5%) and finest (below 0.16 mm -27.1%) [6,7]. We found out that the wastes finest fraction includes the cut materials particles.…”

“…Therefore, in the course of the overall study of the waterjet cutting wastes we found that they represent very fine almost two-fractions heavy sands with high content of the dust fraction, the chemical composition of which consists mainly from iron, silicon and aluminum oxides. Such wastes characteristic allowed us to specify possible ways of their utilization, one of which is production of wall building ceramic [6,7].…”

“…It proves that burning temperature 950°С for these compositions and conditions was not sufficient for temperature almandine changes. However, considering the good indicators of the physical-mechanical properties and the results of the electronic microscopic study [6,7], showing good quality of the ceramic fragment, it is unreasonable to increase the temperature.…”

Green strength properties of waterjet abrasive waste as potential composition in green mould by Taguchi and ANOVA approach

“…A few studies have recently been carried out on abrasive sand waste from waterjet cutting as an alternative to being used. According to the Federal Classification Catalog of Waste 2017, abrasive waste from waterjet cutting of ferrous and non-ferrous metals is virtually unhazardous [12]. The economic use of the waste is the most effective waste elimination method to minimize hazards [12][13][14].…”