The Tatuí Formation as a source of raw material in the ceramic pole of Santa Gertrudes (SP)

Murilo Zaine Curtolo,Cibele Carolina Montibeller,Guillermo Rafael Beltran Navarro

doi:10.1590/0370-44672019730100

Murilo Zaine Curtolo, Cibele Carolina Montibeller + Show 1 more

Open Access

https://doi.org/10.1590/0370-44672019730100

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Abstract

Abstract The importance of the Santa Gertrudes Ceramic Complex (SGCC) in the ceramic market is directly associated with the high quality of the Corumbatai Formation clays used in the manufacture of its products. Although the volumetric capacity of the Corumbatai Formation is able to meet the SGCC demand for the coming years, its industries are always in search of alternative sources for raw material, among these sources is the Tatui Formation. In order to determine if the sediments coming from the Tatui Formation have the potential to be used in the ceramist industry, geochemical, mineralogical and physical characterization tests were carried out on samples obtained from two different profiles. The analyses showed a sequence of fine sandstones rich in SiO2 and Al2O3, with a mineralogy composed of quartz, potassium feldspar / plagioclase (albite), filosilicates and iron oxides in secondary proportions. The ceramic tests, in turn, presented heterogeneous results for the specimens submitted to burning at 1150 o C, but in general, the material coming from the Tatui Formation has a promising potential within the field of ceramic manufacturing.

Highlights

Considered to be the main center for the production of ceramics in Latin America, the Santa Gertrudes Ceramic Complex (PCSG) comprises about 30% of the national exports of ceramic products and is responsible for profiting over R$ 26 million in the first half of 2016
The low calcium oxide (CaO) contents mineralogy, which is composed mainly of quartz (± 50%), plagioclase / potassium feldspar (FK) (± 30%), iron oxides are directly associated with the CaCO3s (± 12%) and phyllosilicates (± 8%); this
The combination of petrography, X - ray diffraction, geochemical analysis and ceramic tests allowed the classification of Tatuí Formation lithotypes as a sequence of fine sandstones rich in silicon and aluminum oxides, composed of quartz, potassium feldspar/ plagioclase, and phyllosilicates

Summary

Introduction

Considered to be the main center for the production of ceramics in Latin America, the Santa Gertrudes Ceramic Complex (PCSG) comprises about 30% of the national exports of ceramic products and is responsible for profiting over R$ 26 million in the first half of 2016 Such profit is associated mainly with the exports of products such as floors, tiles and porcelain tiles. The reserves of the Corumbataí Formation are capable of supplying the PCSG’s demand for raw materials for the few decades, the search for new sources of these kinds of material has always been a concern for its industries Among these possible sources are the sediments coming from the Tatuí Formation, a Permian sedimentary unit characterized by a fine-grained to medium sandstone package associated with the post-glacial phase of the Paraná Basin in the state of São Paulo (RochasCampos, 1967; Landim, 1970)

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