Mechanical activation of pyrophyllite ore for aluminum extraction by acidic leaching

Erdemoğlu, Murat; Birinci, Mustafa; Uysal, Turan; Tüzer, Esra Porgalı; Barry, Thierno Saidou

doi:10.1007/s10853-018-2606-8

Cited by 28 publications

(10 citation statements)

References 29 publications

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“…The black and red scoria powders were exposed to heat in static air with a rate of 5 °C/min from RT up to 1300 °C to study their thermal properties. Thermal treatment is a significant factor that results in many structural transformations like decomposition, oxidation, surface reconstruction, and formation of distinct phases [ [28] , [29] , [30] , [31] ]. The DSC analysis of the two scoriae is presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The shoulder peak at 602 cm −1 is attributed to as the hematite phase [ 24 , 25 ]. The albite and hematite metal phases are represented by peaks ranging from 540 to 460 cm −1 and 402 cm −1 , respectively [ 24 , 25 , 28 , 29 ]. The peaks located at 288 and 223 cm −1 are referred to hematite/albite [ 24 , 25 , 29 ] and hematite/pargasite metal phases [ 25 ], respectively.…”

Section: Resultsmentioning

confidence: 99%

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The impact of thermal treatment on the mechanical properties and thermal insulation of building materials enhanced with two types of volcanic scoria additives

Alraddadi

2023

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The impact of thermal treatment on the mechanical properties and thermal insulation of building materials enhanced with two types of volcanic scoria additives

Alraddadi

2023

Heliyon

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“…The dry specific densities of PAs and crushed stone aggregates are 2.34 and 2.64 for 0–4 mm, 2.56 and 2.65 for 4–8 mm, and 2.64 and 2.67 for 8–16 mm, respectively. The chemical compositions and properties of cement and PA 33 are reported in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Mechanical properties of high strength concrete made with pyrophyllite aggregates exposed to high temperature

Demez

Karakoç

2020

Structural Concrete

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This paper presents the results of an experimental research on the assessment of the residual mechanical properties of high strength concretes (HSCs) made with pyrophyllite aggregate (PA) after high temperature. In the study, HSC mixtures with varying PA ratios (0, 25, 50, 75, and 100%) were subjected to elevated temperature (150, 300, 450, 600, and 750°C) and then cooled in two different cooling regimes (air and water‐cooling). The properties examined included compressive strength, weight loss, effects of cooling regime, and microstructure of HSC. The results of the study show that the increase in the PA ratios leads to a decrease in the compressive strength values. The results showed that weight loss of the specimens decreased with increasing PA ratios. It was found that the compressive strength values of HSC with PA cooled in air‐cooling are higher than that cooled in water. When the compressive strength loss and the weight loss values are taken into consideration according to the control samples, the group with the highest resistance to high temperature (750°C) effect was 100% PA group. Also, the internal structures of the samples exposed to high temperature were examined using scanning electron microscope and visual observations.

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“…Chemical separation techniques include calcination/roasting and leaching using oxalic acid and an ammonia solution. Separation techniques that combine chemical and physical separation techniques include sequential calcination or roasting followed by magnetic separation [90][91][92][93][94]. These techniques are discussed based on researchers' contributions to the processing of low-grade pyrophyllite ore.…”

Section: Enrichment Of Low-grade Pyrophyllite Orementioning

confidence: 99%

Pyrophyllite: An Economic Mineral for Different Industrial Applications

Ali

Ahmed

et al. 2021

Applied Sciences

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Pyrophyllite (Al2Si4O10(OH)2) is a phyllosilicate often associated with quartz, mica, kaolinite, epidote, and rutile minerals. In its pure state, pyrophyllite exhibits unique properties such as low thermal and electrical conductivity, high refractive behavior, low expansion coefficient, chemical inertness, and high resistance to corrosion by molten metals and gases. These properties make it desirable in different industries such as refractory; ceramic, fiberglass, and cosmetic industries; as filler in the paper, plastic, paint, and pesticide industries; as soil conditioner in the fertilizer industry; and as a dusting agent in the rubber and roofing industries. Pyrophyllite can also serve as an economical alternative in many industrial applications to different minerals as kaolinite, talc, and feldspar. To increase its market value, pyrophyllite must have high alumina (Al2O3) content, remain free of any impurities, and possess as much whiteness as possible. This paper presented a review of pyrophyllite’s industrial applications, its important exploitable properties, and the specifications required for its use in industry. It also presents the most effective and economical techniques for enriching low-grade pyrophyllite ores to make them suitable for various industrial applications.

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Mechanical activation of pyrophyllite ore for aluminum extraction by acidic leaching

Cited by 28 publications

References 29 publications

The impact of thermal treatment on the mechanical properties and thermal insulation of building materials enhanced with two types of volcanic scoria additives

The impact of thermal treatment on the mechanical properties and thermal insulation of building materials enhanced with two types of volcanic scoria additives

Mechanical properties of high strength concrete made with pyrophyllite aggregates exposed to high temperature

Pyrophyllite: An Economic Mineral for Different Industrial Applications

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