Abstract
Electric arc furnace steel dust (EAFD) waste has been studied as a complementary byproduct material for kaolin-based clays fabricated with additive manufacturing via the direct ink writing technology. The combination of clay with steel dust has a positive contribution to the environment because this waste can be stabilized, and the corresponding pollution reduced. EAFD is classified as a hazardous waste from the metallurgical industry with millions of tons not properly disposed or used worldwide. The research presented in this investigation evaluate the use EAFD as an admixture for clay ceramics to produce three-dimensional printed (3DP) parts. The cylindrical specimens fabricated involved not only different water to clay ratios but also waste contents from 0 wt% to 20 wt%. After a sintering processing in an air atmosphere, samples were treated during 2 h at 1100 °C, and later tested in compression tests. Other conducted characterization tests were density, scanning electron microscopy, rheology, Weibull statistics, and creep analysis. The main contribution of this research to the literature is the valorization of the EAFD hazardous waste as a material for 3D printing.
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