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Manufacture of ceramics with high mechanical properties from red mud and granite waste

Author(s):



Medium: journal article
Language(s): Spanish
Published in: Materiales de Construccion, , n. 333, v. 69
Page(s): 180
DOI: 10.3989/mc.2019.03818
Abstract:

Red mud (bauxite residue) is an alkaline suspension that is the by-product of alumina production via the Bayer process. Its elevated annual production and the global inventory of red mud determine its valorisation. Granite can be used as a source of fluxing oxides for the ceramic industry, as can the flake-shaped waste generated during the flaming of granite. In this work, a set of ceramic pieces made of red mud and granite waste are prepared and characterised via X-ray diffraction, a hardness test, electron scanning microscopy, a leaching test, and determining open porosity, water absorption, bulk density and flexural strength of the samples. The main crystalline phases in the high-temperature fired products are hematite, pseudobrookite and anorthite; the presence of magnetite reveals their ferrimagnetic character. All samples present high mechanical properties. Leaching results are below critical levels established by regulations.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.3989/mc.2019.03818.
  • About this
    data sheet
  • Reference-ID
    10516868
  • Published on:
    10/12/2020
  • Last updated on:
    19/02/2021
 
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