Analysis of mineral grades for geometallurgy: Combined element-to-mineral conversion and quantitative X-ray diffraction

Parian, Mehdi; Lamberg, Pertti; Möckel, Robert; Rosenkranz, Jan

doi:10.1016/j.mineng.2015.04.023

Cited by 43 publications

(28 citation statements)

References 25 publications

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“…In latest research Parian et al (2015) showed close correspondence to quantitative X-ray powder diffraction results and to bulk chemical data that were treated by element to mineral conversion techniques. The accuracy of SEMbased image analysis is related to the number of particles as well as mineral grains exposed and measured in the polished surface of the studied grain mount (Petruk, 2000) and proper sample preparation to ensure isotropy of the sample (Heinig et al, 2015;Kwitko-Ribeiro, 2012).…”

Section: Introductionsupporting

confidence: 55%

MLA-based partition curves for magnetic separation

Leißner

Bachmann

Gutzmer

et al. 2016

Minerals Engineering

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Section: Introductionsupporting

confidence: 55%

MLA-based partition curves for magnetic separation

Leißner

Bachmann

Gutzmer

et al. 2016

Minerals Engineering

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“…XRD is a cheap and fast data acquisition technique, which has detection limits for minerals quantities lower than 0.5-1.0 wt % [21] depending on the specific mineral and matrix. SEM quantification has a detection limit for minerals of around 0.01 wt % [22,23], but it is more expensive and time consuming than XRD. The mineralogical quantification assessed by each technique is influenced by their respective shortcomings, i.e., sample preparation is a key aspect to consider in both XRD [24,25] and SEM [26,27].…”

Section: Quantification Challengesmentioning

confidence: 99%

Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit

Silva¹,

Sørensen²,

Aasly³

et al. 2018

Minerals

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Nabbaren nepheline syenite, a silica-deficient intrusive rock with low Fe content, was the industrial mineral deposit study case in this study. The quality of industrial mineral products are generally based on their bulk chemistry, which are directly related to their modal mineralogy and mineral chemistry; however, these are costly and time-consuming to determine. A geometallurgical-based methodology, known as element-to-mineral conversion (EMC), was applied to estimate its modal mineralogy based on its given bulk and mineral chemistry. EMC is a convenient and cost-effective technique, which can be used to quickly estimate modal mineralogy. Two EMC methodologies were applied: one least square based, LS-XRD, and one regression based, R-XRD. Additionally, average and specific mineral chemistries were used during estimations. The R-XRD method, a method not yet used for EMC purposes, gave better modal mineralogy estimations than LS-XRD. Considering the restrictions in the method, R-XRD shows potential for improvement and implementation at operational scale, making it a valuable geometallurgical tool for increasing resource performance, easing decision-taking processes, and reducing risks. The use of different mineral chemistries did not influence the modal mineralogy estimation, unlike the method used for it.

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“…The limitations of XRD method exist in its complex and time‐consuming sample preparation procedure, taxing calibration curves fitting, and quantification methods selection, as well as its inherent deficiency that it detects crystalline phases only. In addition, automated mineralogy based on scanning electron microscopy (SEM) and optical image analysis (OIA) are commonly utilized for estimating mineral grades . The method requires careful and tedious samples preparation and costs time and money …”

Section: Introductionmentioning

confidence: 99%

“…In addition, automated mineralogy based on scanning electron microscopy (SEM) and optical image analysis (OIA) are commonly utilized for estimating mineral grades. [31] The method requires careful and tedious samples preparation and costs time and money. [32] Furthermore, instruments based on element analysis are used to characterize clay related properties in oil sands.…”

Section: Introductionmentioning

confidence: 99%

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Determination of clay content in Canadian oil sands using x‐ray florescence spectroscopy for diagnosis of ore processability

2019

Can J Chem Eng

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In this study, a simple and robust method based on the use of x‐ray fluorescence (XRF) spectroscopy to measure potassium content as an indicator of illite in oil sands was proposed and tested. The XRF results of illite determination were compared with those determined using the conventional methylene blue titration (MBT) method. To test the suitability of the XRF method for determining illite content in various streams of oil sands processing as a diagnosis tool, a toluene‐diluted‐bitumen solution was used to contaminate solid surfaces prior to their analysis by the XRF and MBT methods. In order to remove the organic matter from the bitumen‐contaminated solids for evaluating the XRF and MBT method, toluene washing and low temperature ashing were applied to the bitumen‐contaminated solids prior to their analysis. The robustness of the XRF analysis in comparison with the MBT method was further confirmed by analyzing the solids extracted from bitumen froth and tailings stream. The results show that the XRF method was more tolerant to surface contamination and therefore more reliable in determining illite content in oil sands and relevant processing streams. It was also found that the potassium contents measured by the XRF method on solids from 10 ores show a strong correlation with the corresponding fines contents of these ores, indicating that the XRF method can potentially be used to determine the fines content of oil sands and related processing streams.

show abstract

Analysis of mineral grades for geometallurgy: Combined element-to-mineral conversion and quantitative X-ray diffraction

Cited by 43 publications

References 25 publications

MLA-based partition curves for magnetic separation

MLA-based partition curves for magnetic separation

Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit

Determination of clay content in Canadian oil sands using x‐ray florescence spectroscopy for diagnosis of ore processability

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