Download Ceramic Materials from Coffee Bagasse Ash Waste by Wilson Acchar, Eduardo J. V. Dultra PDF

By Wilson Acchar, Eduardo J. V. Dultra

This e-book proposes using espresso bagasse ash (CBA) waste as uncooked fabric for use in ceramic formulations. The strategy provided here's a method to a present ambiental challenge as CBA waste is discharged in excessive quantities in agriculture. The authors research the potencial of CBA as a cloth to alternative feldspar in tile production.

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The raw materials used in the manufacture of glazed porcelain tiles were directly collected from the storage silos of the company. Coffee husk ash was collected in its raw state in a coffee farm located in Eunápolis, southern state of Bahia. Importantly, this farm uses solely coffee husks as fuel for the production of heat to be used in drying ovens and coffee processing. Residues 1 and 2 are byproducts obtained from a physical treatment performed in coffee husk ash in its original state. The main purpose of this coffee husk ash treatment was to decrease the amount of charred matter contained in fresh ashes as a way to mitigate the negative effects caused during firing (excessive weight loss and gas formation), as reported by Dultra and Acchar (2010).

This characteristic is desired, since it will lead to better mechanical performance of parts. 6 show another phase diagram in the SiO2–CaO–Al2O3 and cristobalite–corundum–periclase system that may be useful to identify and compare the crystalline phases formed during the sintering process. The crystalline phases formed during the sintering process as well as the theoretical previous will be discussed in another chapter. References Dultra EJV, Acchar W (2010) Incorporação de Cinzas da Casca de Café na Produção de Placas Cerâmicas para Revestimento.

Adv Appl Ceram 105(1):46–54 Chapter 7 Physical and Mechanical Properties of CBA Incorporated Material Abstract This chapter shows the physical and mechanical properties after the ­sintering process. Dilatometric analysis and X-ray diffraction after firing as well as the water absorption, porosity and bending strength values are described and ­compared with the Brazilian norms. 1 Dilatometric Analysis The dilatometric analysis is evaluated for expansion and contraction of sample as a function of temperature (heating) and time.

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