Potential of Nepheline Syenite of Monchique for incorporation in ceramic industry

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nowadays, Nepheline Syenite of Monchique (Portugal) have, as main application, the natural stone sector. The present work intends to study the potential of this rock to the ceramic industry, due to its high alumina and alkalis content in the nepheline syenite constitution.

Today, isolated feldspars are the minerals used in this sector, although alumina and alkalis content within nepheline syenite, make of this rock a potential substitute of those feldspars. Alumina is used as a stabilizer, promoting the durability of the materials by increasing the resistance and alkalis content works as fluxing agent, reducing burning temperature.

For this purpose, specimens of 0, 20, 40 e 60% in weight of nepheline syenite mixed with clay were elaborated. Afterwards, the specimens were exposed to three different temperatures, 900 °C, 1000 °C e 1100 °C and each one was submitted to physic and mechanic tests to determine the potential of Monchique’s Syenite in ceramic industry.
Original languageEnglish
Title of host publicationPotential of Nepheline Syenite of Monchique for incorporation in ceramic industry
Subtitle of host publicationPotencial do Sienito Nefelínico de Monchique para incorporação na indústria cerâmica
Place of PublicationÉvora
PublisherV Congresso de Jovens Investigadores em Geociências, Pólo de Estremoz da Universidade de Évora
Pages23-26
Number of pages4
Publication statusPublished - 11 Nov 2015

Keywords

  • nepheline syenite
  • ceramic industry
  • alumina
  • alkalis

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  • Cite this

    Simão, J., Vicente, C., & Galacho, R. Z. (2015). Potential of Nepheline Syenite of Monchique for incorporation in ceramic industry. In Potential of Nepheline Syenite of Monchique for incorporation in ceramic industry: Potencial do Sienito Nefelínico de Monchique para incorporação na indústria cerâmica (pp. 23-26). Évora: V Congresso de Jovens Investigadores em Geociências, Pólo de Estremoz da Universidade de Évora.