Montmorillonite: A comparison of methods for its determination in foundry bentonites
A comparison and estimation of usefulness of a quantitative analysis of montmorillonite in foundry bentonites, was the aim of this research. The investigations were made by means of three different techniques: methylene blue (MB) adsorption method, Cu(II)-triethylenetetramine complex (Cu(II)-TET) ad...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Croatian Metallurgical Society
2011-04-01
|
| Series: | Metalurgija |
| Subjects: | |
| Online Access: | http://public.carnet.hr/metalurg/Metalurgija/2011_vol_50/No_2/MET_50_2_119-122_Holtzer.pdf |
| Summary: | A comparison and estimation of usefulness of a quantitative analysis of montmorillonite in foundry bentonites, was the aim of this research. The investigations were made by means of three different techniques: methylene blue (MB) adsorption method, Cu(II)-triethylenetetramine complex (Cu(II)-TET) adsorption method, and infrared spectroscopy (FTIR) method. Tests were performed for 9 kinds of bentonites originated from various producers. The achieved results indicated that, the results obtained by the FTIR method were, in general, even 10% lower than the ones obtained by other methods. The best correlation with the data given by the producers were obtained for the Cu(II)-TET method. In addition, this method was characterised by the smallest value of standard deviations. A very essential advantage of the Cu(II)-TET method is a much shorter time needed for the analysis and its easier execution, which is important under production conditions. |
|---|---|
| ISSN: | 0543-5846 1334-2576 |