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

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.