Open AccessEffect of use residual sludge from watertreatment plants as a partial substitute forclay for refractory bricks production
Author(s) -
Alejandra Sarabia Guarin,
Jorge Sánchez-Molina,
Juan Carlos Bermúdez Carrillo
Publication year - 2020
Publication title -
revista uis ingenierías
Language(s) - English
Resource type - Journals
eISSN - 2145-8456
pISSN - 1657-4583
DOI - 10.18273/revuin.v20n1-2021002
Subject(s) - refractory (planetary science) , absorption of water , brick , softening , softening point , shrinkage , raw material , materials science , water resistance , porosity , aluminosilicate , metallurgy , composite material , chemistry , biochemistry , organic chemistry , catalysis
The sludge generated from water treatment has been classified as a potential environmental pollutant. Because of its chemical composition similar to clay, was proposed to evaluate the effect of its incorporation as a partial substitute for traditional clay materials in the manufacture of aluminosilicate refractory bricks. The raw materials used were characterized by XRD and XRF; the prototypes designed were mixed, extruded, dried and firing at 1200°C, evaluating their linear shrinkage, apparent density, porosity, water absorption and mechanical and pyroscopic resistance (melting cone softening point). The results show the addition of 10% of sludges from industrial water treatment plant, contributedto elevate the softening point the clay that obtaining a refractory brick capable to supporting a temperature up to 1430 °C