USE OF HOMOGENEOUS PEGMATITE AS RAW MATERIAL IN CERAMIC COATING MANUFACTURING

Reference	Presenter	Authors (Institution)	Abstract
16-056	Thalles Confessor Lima	Lima, T.C.(Instituto Federal de Ciência e Tecnologia do Rio Grande do Norte); Souza, M.M.(Instituto Federal de Educação, ciência e tecnologia do Rio Grande do Norte); de Farias, D.S.(Instituto Federal de Ciência e Tecnologia do Rio Grande do Norte); Almeida, A.B.(Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Norte); Sousa, J.B.(Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte);	Pegmatite is a igneus rock that currently is used to extract essential materials for the ceramic industry, such as feldspar, quartz and kaolin, although the extraction of such minerals just is possible in heterogeneous pegmatites, where there are vast nuclei of those minerals, diferently of the homogeneous ones, where minerals are arranged uniformly. This work aims to study the feasibility of obtaining a ceramic coating using the homogeneous pegmatite as a raw material. For the beginning of the study, was done the pegmatite’s sampling, in those samples there were presence of feldspar, quartz and acessory minerals: granade and biotite. Subsequently, the material was crushed to raise the granulometry necessary for subsequent processes, with 100% of it passing through the 200 # (mesh) sieve. Two formulations were created by adding kaolin and quartz to the pegmatite mass. The specimens were submitted to sintering and technological characterization tests were made following a Brazilian norm (NBR 13818). The results were satisfied regarding the substitution of the original raw materials by the pegmatite, but this one did not get the same performance as the conventional raw materials.
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