Technological and mineralogical characterization of Belmiro Braga and São Miguel do Anta Kaolins, Minas Gerais

Authors

  • Luiz Carlos Bertolino MCTI; Centro de Tecnologia Mineral
  • Diana Magalhães Cunha Rodrigues Universidade do Estado do Rio de Janeiro; Faculdade de Geologia
  • Camila Leão Roland Universidade Federal do Rio de Janeiro; Instituto de Geociências; Departamento de Geologia
  • Odivaldo Cambraia Alves Universidade Federal Fluminense; Departamento de Físico-Química Outeiro de São João Batista
  • Edivaldo dos Santos Filho Centro Brasileiro de Pesquisas Físicas

DOI:

https://doi.org/10.11137/2012_2_65_70

Abstract

The study aimed the technological and mineralogical characterization of the kaolins Belmiro Braga (BB) and São Miguel do Anta (SMA), through X ray diffraction (XRD), scanning electron microscopy (SEM-EDS), X ray fluorescence and electron spin resonance (ESP) as well as the physical and chemical beneficiation to eliminate the ion Fe+3 and upgrade their whiteness levels. Both kaolins are fine grained; the BB kaolin has kaolinite in its mineralogy, and the SMA kaolin has quartz. After chemical bleaching, the whiteness reached 81.0% ISO to the BB sample, and 71.2% ISO to the SMA sample.

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Published

2012-12-01

How to Cite

Bertolino, L. C. (2012) “Technological and mineralogical characterization of Belmiro Braga and São Miguel do Anta Kaolins, Minas Gerais”, Anuário do Instituto de Geociências. Rio de Janeiro, BR, 35(2), pp. 65–70. doi: 10.11137/2012_2_65_70.

Issue

Vol. 35 No. 2 (2012)

Section

não definida

License

This journal is licensed under a Creative Commons — Attribution 4.0 International — CC BY 4.0, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.