Influence of the Changes of the Structure of Foundry Bentonites on Their Binding Properties

  • Sylwia ŻYMANKOWSKA-KUMON AGH University of Science and Technology
  • Mariusz HOLTZER AGH University of Science and Technology
  • Ewa OLEJNIK AGH University of Science and Technology
  • Artur BOBROWSKI AGH University of Science and Technology
Keywords: bentonite, foundry industry, determination of montmorillonite, FTIR analysis, X-ray analysis

Abstract

In this paper, the effects of the examination of the structure of calcium bentonites, activated by sodium carbonate, applied in the foundry industry as a binding agent for moulding sands, subjected to the effects of high temperature, were presented. The examination was conducted with the use of the infrared spectroscopy (FTIR) and X-ray analysis (XRD). In addition, the montmorillonite contents in the bentonite sample was determined with the use of the modern,
Cu(II)-TET complex method and the technological properties of moulding sands containing the examined bentonites, such as: compactability, permeability, compression strength were examined.

DOI: http://dx.doi.org/10.5755/j01.ms.18.1.1342

Published
2012-03-15
Section
METALS, ALLOYS, COATINGS