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Energy saving technology for sintering of black bricks from high-siliceous clay

Published online by Cambridge University Press:  09 October 2020

Mario Flores Nicolas
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos (CIICAp–UAEMor), Av. Universidad 1001, C.P. 62209, Cuernavaca, Morelos, Mexico.
Marina Vlasova
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos (CIICAp–UAEMor), Av. Universidad 1001, C.P. 62209, Cuernavaca, Morelos, Mexico.
Pedro Antonio Márquez Aguilar
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos (CIICAp–UAEMor), Av. Universidad 1001, C.P. 62209, Cuernavaca, Morelos, Mexico.
Mykola Kakazey
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos (CIICAp–UAEMor), Av. Universidad 1001, C.P. 62209, Cuernavaca, Morelos, Mexico.
Marcos Mauricio Chávez Cano
Affiliation:
Instituto de Ingeniería, Universidad Nacional Autónoma de México UNAM, Circuito Escolar s/n, Ciudad Universitaria, Calzada Coyoacán, C.P. 04510, CDMX, México.
Roberto Arroyo Matus
Affiliation:
Unidad Académica de Ingeniería, Universidad Autónoma de Guerrero UAGRo, Av. Lázaro Cárdenas S/N Ciudad Universitaria, C.P. 39000, Chilpancingo, Guerrero, México.
Teresa Pi Puig
Affiliation:
Instituto Geología, Universidad Nacional Autónoma de México UNAM, Cd. Universitaria, Circuito de la Investigación Científica, Del. Coyoacán, C.P. 02376, CDMX, México.
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Abstract

The low-temperature synthesis of bricks prepared from high-siliceous clays by the method of plastic molding of blanks was used. For the preparation of brick blanks, binary and ternary mixtures of high-siliceous clays, black sand, and bottle glass cullet were used. Gray-black low-porosity and high-porosity ceramics was obtained by sintering under conditions of oxygen deficiency. It has been established that to initiate plastic in mixtures containing high-siliceous clay, it is necessary to add montmorillonite/bentonite additives, carry out low-temperature sintering, and introduce low-melting glass additives with a melting point ranging from 750 to 800 °C. The performed investigations have shown that the sintering of mixtures with a total content of iron oxide of about 5 wt% under reducing conditions at Tsint. = 800°C for 8 h leads to the formation of glass ceramics consisting of quartz, feldspars, and a phase. The main sources of the appearance of a dark color is the formation of [Fe3+O4]4- and [Fe3+O6]9- anions in the composition of the glass phase and feldspars. By changing the contents of clay, sand, and glass in sintering, it is possible to obtain two types of ceramic materials: (a) in the form of building bricks and (b) in the form of porous fillers.

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Copyright
Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press

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