BAUXITE SERVICES Comprehensive chemical and mineralogical characterisation of bauxite
Alumina producers face a multitude of challenges positioning themselves in a competitive global market with strong growth fundamentals. The exploration, resource definition and extraction of alumina from diverse bauxite types with complex varying mineralogy requires a laboratory partner with focus, dedication and proven track record in this commodity.
Our Expertise and the alumina recovered using the Bayer Determination of oxalates and sulphates Intertek’s global expertise, dedicated bauxite process. are determined using ion chromatography. laboratory and technical excellence constitute Intertek maintains and operates all the Magnetic susceptibility measurements a key enabler in reaching your goals. Our requisite sample preparation equipment for can also be performed using a magnetic Perth facility is ISO 17025 accredited for the processing bauxite ores. These processes susceptibility meter. bauxite methods. include drying, crushing, splitting and Additional Capability Our experienced team of professionals can pulverising. Intertek Minerals has XRD and FTIR offer independent reliable advice on the full XRF analysis is the preferred method to capabilities which can be used to mineralogical and chemical characterisation of accurately characterise the major element quantitatively characterise the mineralogy of diverse bauxite materials. chemistry of bauxite samples. A simple loss bauxite deposits. on ignition (LOI) value at 1000°C is reported Bauxite Testing Trace element suite determinations on along with the major and minor oxide bauxite bauxite can be made using both fusion and Bauxite is a residual weathering product suite. Owing to the hygroscopic nature of four acid digests with ICP OES and ICP MS consisting primarily of gibbsite (Al(OH)3), bauxites, all data are reported moisture free. finishes to provide high quality fit-for-purpose boehmite (γAlO-OH) and diaspore (αAlO-OH) Of more fundamental importance to the data. as well as various iron oxides, titanium oxides industry is the available alumina and reactive and clays. Bauxite is the principal global Additional analyses such as chloride, fluoride silica components of the ores i.e. that which resource for the production of aluminium. and carbon analyses can be done on bauxite would dissolve in a caustic leach (Bayer These important deposits form under intense, samples using single element analytical process). Analysis is performed on the leach usually tropical, weathering conditions from techniques. solution using inductively coupled plasma carbonate or various silicate rocks. Good A range of packages and procedures are optical emission spectrometry (ICP OES). drainage is a prerequisite for the dissolution available to suit your specific requirements. and removal of silica from clays and the Different leach conditions (temperature, Please contact your regional business precipitation of hydrated aluminium oxides. caustic concentration) are offered to development manager to discuss your Owing to the proximity to the earth’s surface, accommodate varying ore mineralogy in options. bauxite deposits are normally strip mined different bauxite deposits.
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