Application of XRF in the Aluminum Industry

Feret, Frank R.

doi:10.1007/978-1-4615-2972-9_16

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…45, No. 3, 1997 Bidi-Koum bauxites ratories, XRF and the fusion sample preparation technique (Feret 1993) were used. The major oxide concentrations and H20 are given in Table 1.…”

Section: Methods and Resultsmentioning

confidence: 99%

Quantitative Phase Analysis of Bidi-Koum Bauxites (Guinea)

Feret¹

1997

Clays and clay miner.

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Abstract--Fifty-two Bidi-Koum bauxites from Guinea, Africa, of diversified chemical composition were characterized for their mineral composition. First, 14 element oxide concentrations were determined by X-ray fluorescence (XRF) using a fusion sample preparation technique. Loss of Mass (LOM) and organic carbon (OC) concentrations were also determined. The initial X-ray diffraction (XRD) phase quantification was carried out employing XDB software. This software allows for full interpretation of a sample diffractogram and helps generate initial concentrations of identified minerals based on a standardless approach. In the stage that followed, the mass balance procedure on the XDB software helped refine the final phase composition. Then, gibbsitic A1203 concentrations obtained by wet chemistry for all samples and kaolinitic SiO2 concentrations obtained for selected samples were compared with the concentrations obtained using the XDB software. Phases that were quantified are: gibbsite, boehmite, kaolinite, wavellite, goethite, hematite, quartz, anatase, rutile and illite. Phase concentrations were obtained for illite from 1(20 and for wavellite from P205 concentrations. The alumina substitution in the goethite lattice was also estimated.

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“…45, No. 3, 1997 Bidi-Koum bauxites ratories, XRF and the fusion sample preparation technique (Feret 1993) were used. The major oxide concentrations and H20 are given in Table 1.…”

Section: Methods and Resultsmentioning

confidence: 99%

Quantitative Phase Analysis of Bidi-Koum Bauxites (Guinea)

Feret¹

1997

Clays and clay miner.

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“…To characterize all bauxite samples involved in the project, WCh, BQuant (Kimmerle and Feret, 1997), X-ray Database (XDB) Hungalu (Sajó, 1994), X-ray fluorescence (XRF) (Feret, 1993), and TGA determinations were carried out, in addition to Rietveld-X-ray diffraction (XRD) investigations.…”

Section: Bauxitementioning

confidence: 99%

Selected applications of Rietveld-XRD analysis for raw materials of the aluminum industry

Feret¹

2013

Powder Diffr.

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In the last few decades, X-ray diffraction (XRD) systems have been paramount and irreplaceable in controlling bauxite exploration, as well as Bayer and reduction processes. XRD quantitative phase analysis in the aluminum industry witnessed a steady deployment of the Rietveld method, which at present progressively replaces existing methodologies in research and plant laboratories. Rietveld analysis not only helped to surpass traditional XRD calibration methods, it also opened the door for new applications previously not possible. The use of the Rietveld method to characterize selected materials unique to the aluminum industry, such as bauxite, red mud, and alumina is demonstrated and discussed. This paper also presents how synchrotron-based diffractograms obtained for bauxite and red mud samples allowed a much better understanding of mineralogical representation, and made it possible to leverage their Rietveld quantification. Despite clear advantages, the Rietveld method also has limitations that are revealed. For alumina phase quantification, a dedicated Rietveld analytical program was built with structure data for eight alumina mineralogical phases: alpha, beta (β-Al2O3 = Na2O•11Al2O3), delta, gamma (2), kappa, sigma, and theta. The paper gives unique examples of phase quantification in aluminas of various origins and phase composition.

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Application of XRF in the Aluminum Industry

Cited by 2 publications

References 28 publications

Quantitative Phase Analysis of Bidi-Koum Bauxites (Guinea)

Quantitative Phase Analysis of Bidi-Koum Bauxites (Guinea)

Selected applications of Rietveld-XRD analysis for raw materials of the aluminum industry

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