X-Ray Fluorescence Analysis (XRF)
X-Ray Fluorescence (XRF) fusion techniques are suitable for the analysis of most mineralogical ores, metallurgical products and complex matrices, particularly where total analysis with high precision is required for major elements. The method involves fusing a sub-sample of the prepared pulp with a lithium borate flux prior to introduction to the instrument. Corrections are made for inter-element and matrix effects to achieve results of the highest quality. Fused bead followed by XRF Fluorescence Spectrometry is the preferred method of analysis of Iron Ores, Bauxites, Nickel Laterites, Mineral Sands, plus many other ores including Manganese, Chrome, Tantalum, Tin, Tungsten and Rare Earths.
Our Bureau Veritas facility in Perth boasts the largest XRF facility in the world utilising robotically serviced fusion machines and automated XRF Instruments. All other Bureau Veritas sites use similar methodology and equipment and draw on the expertise available for technical support.
For ore grade materials, flux composition and sample to flux ratios are varied to ensure the sample dissolves completely and that re-crystallisation does not occur as the melt is cooled.
Oxidising agents may be added to ensure retention of sulphur or conversion of certain elements to their highest oxidation state.
Bureau Veritas offers a number of analytical packages for routine analysis.