Technological characterization of syenitic raw material with nepheline for exploitation

Authors

  • Carolina Del Roveri Universidade Federal de Alfenas; Instituto de Ciência e Tecnologia; Núcleo de Engenharia de Minas
  • Letícia Hirata Godoy Universidade Estadual Júlio de Mesquita Filho; Instituto de Geociências e Ciências Exatas; Departamento de Petrologia e Metalogenia
  • Antenor Zanardo Universidade Estadual Júlio de Mesquita Filho; Instituto de Geociências e Ciências Exatas; Departamento de Petrologia e Metalogenia
  • Luciano Luis da Silva Endeka Ceramics
  • Maria Margarita Torres Moreno Universidade Estadual Júlio de Mesquita Filho; Instituto de Geociências e Ciências Exatas; Departamento de Petrologia e Metalogenia
  • Fabiano Cabañas Navarro Universidade Federal de Alfenas; Instituto de Ciência e Tecnologia; Núcleo de Engenharia de Minas

DOI:

https://doi.org/10.5935/0100-929X.20130007

Keywords:

Nepheline, Iron oxide, Petrographic characterization, Syenitic rocks.

Abstract

Syenitic rocks with a high nepheline content near Lavrinhas (SP), 234 km northeast of the city of Sao Paulo, may be potentially useful for the production of ceramic products. Based on the mineralogy and texture of this raw material, the best methods of processing these syenitic rocks for fluxing properties are indicated here. In addition, chemical analyses and melting tests were carried out in order to evaluate the melting color before and after magnetic separation, as well as the potential use of this material in glazes and engobes, as compared to a Nepheline standard. Preliminary tests showed that after removal of superficial iron oxide, the raw material bearing nepheline has potential for use in the formulation of porcelain masses, replacing other fluxing materials which have higher added value.

Published

2013-12-01

Issue

Section

RIG050