Reduction of Fe2O3 content of foyaite by flotation and magnetic separation for ceramics production

Silva, Juliana Costa; Ulsen, Carina; Bergerman, Maurício Guimarães; Horta, Daniela Gomes

doi:10.1016/j.jmrt.2019.06.017

Cited by 10 publications

(4 citation statements)

References 17 publications

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“…5 shows that with increasing magnetic field, the iron oxide decreased in the nonmagnetic fraction, where at magnetic field intensity 0.95 tesla, the iron oxide reduced to 0.30 % from 1.4% in the feed sample, and the percentage of iron removal increased from 30.17 to 79.60 %. The attraction of magnetic particles to the roll increases as the magnetic field intensity increases, and hence, the non-magnetic fraction becomes cleaner as the magnetic field intensity increases (Abouzeid and Negm, 2014;Silva et al, 2019;Ibrahim et al, 2002). The following tests were conducted with a field intensity of 0.95 tesla.…”

Section: Effect Of Magnetic Field Intensitymentioning

confidence: 99%

Optimizing the removal of iron oxide from Egyptian feldspar ore

Yassin,

Elbendari,

Hassan

2023

Physicochem. Probl. Miner. Process.

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The demand for feldspar as a raw material for various industrial applications continuously increases. Feldspar is a primary raw material in manufacturing ceramics, glass, fillers, welding electrodes, and enamel. Feldspar is often associated with iron oxide, which decreases its economic value and hinders its industrial application. The present work aimed at reducing iron oxide content in Egyptian feldspar ore from the Wadi Zerabi locality. Ball milling was used for preparing feldspar feed of size -250+45µm. Carpco dry high-intensity magnetic separation followed by acid leaching processes were carried out in order to decrease the iron contamination and increase the feldspar content. A Box-Behnken statistical design was used to optimize the magnetic separation results. From a feldspar feed containing 1.40% Fe2O3, a non-magnetic concentrate of 0.25% Fe2O3 was obtained. The Fe2O3 removal reached up to 82% with a high yield as the % weight of non-magnetic feldspar reached up to 97.5%. The leaching process further reduced the iron oxide content down to 0.19 %. Also, the feldspar whiteness was improved from 65.17% in the original ore to 85.60% in the leached product.

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Section: Effect Of Magnetic Field Intensitymentioning

confidence: 99%

Optimizing the removal of iron oxide from Egyptian feldspar ore

Yassin,

Elbendari,

Hassan

2023

Physicochem. Probl. Miner. Process.

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“…Thus, several scientific works have shown that it's possible to carry out purification and enrichment treatments of feldspar ores that increase the content of alumina and melting elements in the one hand and reduce the impurity contents. These treatments consist of magnetic separation that removes iron bearing and titanium bearing minerals [15] [75] [76] [77] [78]. Magnetic separation is most often followed by flotation adapted for colored minerals [75] [79] [80] [81].…”

Section: Potential Of Ina Syenite As a Source Of Feldspathic Fluxmentioning

confidence: 99%

Mineralogy, Petrography and Geochemistry of the Ina Syenite (Linté, Central Cameroon) as a Source of Industrial Feldspars

Mouliom¹,

Njoya²,

Fouateu³

et al. 2022

JMMCE

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The syenite from Ina (Central region of Cameroon) constitutes a 1000 km² syntectonic batholith intruded in the Paleoproterozoic granitic basement. The aim of this work is to assess the potential of the Ina batholith syenite as a feldspar minerals resource for industrial use through petrographic and geochemical characterization. Most of the rocks are grey coloured and consist of shimmering feldspar phenocrysts in a fine-grained ferromagnesian matrix. Petrography reveals the presence of two major syenite facies: a widely distributed porphyritic syenite and a less-abundant massive syenite. These facies are dominated by phenocrysts of sub-automorphic perthitic orthoclase. Its malgachite face is due to the presence of numerous inclusions of opaque minerals observed by scanning electron microscopy (ESEM-EDX). Plagioclase phenocrysts have a zonal texture characterised microscopically by an oscillatory compositional zonation. Biotite, hornblende and augite, identified by X-ray powder diffraction, are finely disseminated in the feldspar matrix. Quartz appears as small automorphic crystals with maximum abundance of about 4 wt%. The XRF chemical composition reveals, alongside silica (59.29 wt% to 63.27 wt%), significant proportion of alumina (15.82 wt% to 19.80 wt%), potassium and sodium oxides considered as fluxing elements (K 2 O + Na 2 O ≥ 10 wt%). The K 2 O/Na 2 O ratio varies between 1.65 and 5.51 (average 2.58). Iron and titanium oxides (1 ≥ wt% Fe 2 O 3 + TiO 2 ≥ 5), harmful in ceramic industry, are high as in most other feldspathic sources. The characteristics of the Ina syenite are close to most of the syenite ores used worldwide for How to cite this paper:

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“…Table 2 presents the major oxides in each feldspathic sample as obtained through XRF analysis. The results show that the percentage of alkaline oxides (Na 2 O/K 2 O) in all the sample is quite large at 14.97% for LTP, 14.18% for LTS and 14.8% for LTMB, making them suitable for use as ceramic fluxes [19] [20]. With a minimum content of 16%, the Al 2 O 3 content for three samples (18.87% for LTP, 16.83% for LTS and 17.08% for LTMB) is also considered to be high as defined by the Pouliquen standard factsheet for feldspars [17].…”

Section: Geochemistrymentioning

confidence: 99%

Potential of Some Granites from Foumban (West Region of Cameroon) as Fluxing Materials for Ceramics

Soualiou¹,

Dodo²,

Yannick³

et al. 2020

JMMCE

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This study focuses on the mineralogical, geochemical and petrographic characterization of three granite rock samples (LTP, LTS and LTMB) from Foumban, West Region of Cameroon. Fusibility tests were carried out on the samples containing the highest amount of alkali to assess the potential of these materials as fluxing admixture for ceramics. The results show that the granite consists of alkaline feldspars, notably orthoclase and microcline of perthitic micro-texture, plagioclases (in particular albite) and also mafic minerals such as amphibole and pyroxene. The quantity of alkali in the samples is quite high (16.83% for LTS, 17.08% for LTMB and 18.87% for LTP) compared to standard data. Fusibility tests carried out on the samples having the highest alkali content (LTMB and LTP) showed that the vitreous phase appears between 1050˚C and 1100˚C in these samples when they were heated. The Fe 2 O 3 and TiO 2 content of LTMB (3.01% and 1.49% respectively) led to a brown colour of its fired product. Therefore, based on their composition, these materials can be used as feldspathic fluxes for the formulation of ceramic products.

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Reduction of Fe2O3 content of foyaite by flotation and magnetic separation for ceramics production

Cited by 10 publications

References 17 publications

Optimizing the removal of iron oxide from Egyptian feldspar ore

Optimizing the removal of iron oxide from Egyptian feldspar ore

Mineralogy, Petrography and Geochemistry of the Ina Syenite (Linté, Central Cameroon) as a Source of Industrial Feldspars

Potential of Some Granites from Foumban (West Region of Cameroon) as Fluxing Materials for Ceramics

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Reduction of Fe2O3 content of foyaite by flotation and magnetic separation for ceramics production

Cited by 10 publications

References 17 publications

Optimizing the removal of iron oxide from Egyptian feldspar ore

Optimizing the removal of iron oxide from Egyptian feldspar ore

Mineralogy, Petrography and Geochemistry of the Ina Syenite (Lint&#233;, Central Cameroon) as a Source of Industrial Feldspars

Potential of Some Granites from Foumban (West Region of Cameroon) as Fluxing Materials for Ceramics

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Product

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Mineralogy, Petrography and Geochemistry of the Ina Syenite (Linté, Central Cameroon) as a Source of Industrial Feldspars