Method for grinding and delaminating muscovite

Santos, Shirleny Fontes; França, Sílvia Cristina Alves; Ogasawara, Tsuneharu

doi:10.1016/j.mstc.2010.05.001

Cited by 14 publications

(18 citation statements)

References 13 publications

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“…The resulting product was separated from impurities by table gravity concentration, where the impurities are removed by density difference while the material slides on a vibrating table. Then the purified product was ground in a laboratory knife mill and dry sieved to obtain material with granulometric classification less than 100 μm 9 .…”

Section: Methodsmentioning

confidence: 99%

“…In the northeastern region of Brazil, there are sizable reserves of muscovite, but the mining is mainly artisanal, which causes the mineral obtained to have low added value and generates environmental pollution. Muscovite, KAl 2 [Si 3 AlO 10 ](OH,F 2 ) has many industrial applications, such as use in condensers, insulators, plastic fillers and pearlescent pigments 9,10 .…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Composites Based on Recycled High-density Polyethylene/mica

et al. 2021

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Composites based on recycled high-density polyethylene (rHDPE) and muscovite mica, with different rHDE/mica ratios (100/0, 95/5, 90/10, 85/15 and 80/20, weight percentage) were prepared in an internal mixer with roller-type rotors at temperature of 170 ºC for 10 minutes. The materials obtained were characterized by tests of density, Shore hardness D and melt-flow index, along with infrared spectroscopy, thermogravimetry, differential scanning calorimetry and scanning electron microscopy. The hardness analysis confirmed the action of mica as a reinforcing load in the matrix, but this effect stabilized at around 15%. The TG analysis showed that the 85/15 composite presented slightly better performance than the 80/20, indicating that mica, up to 15%, caused disorganization of the polymer structure instead of reinforcing it. The DSC results revealed that the composites had slightly lower melting temperatures than the matrix. The FTIR spectrum indicated there was no chemical interaction between the rHDPE and mica.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sustainable Composites Based on Recycled High-density Polyethylene/mica

et al. 2021

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“…They are widespread in igneous, sedimentary and metamorphic rocks and their crystal structure incorporates a large number of elements, leading to a large and diverse mineral group. Of the many different minerals in the mica family, muscovite (KAl 2 (AlSi 3 O 10 )(OH) 2 ) is the most common, and its physical properties render it useful in a wide range of applications, such as: insulators; condensers; plastics; cosmetics; and paints [1][2][3]. Muscovite is primarily separated from common gangue minerals such as quartz and feldspar, taking advantage of differences in physical properties [3].…”

Section: Muscovitementioning

confidence: 99%

“…Muscovite is primarily separated from common gangue minerals such as quartz and feldspar, taking advantage of differences in physical properties [3]. These methods, however, prove to be ineffective when dealing with small particle sizes and therefore froth flotation is used [1,3].…”

Section: Muscovitementioning

confidence: 99%

An investigation into the flotation of muscovite with an amine collector and calcium lignin sulfonate depressant

Marion

Jordens

McCarthy

et al. 2015

Separation and Purification Technology

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“…We have described in another work [9] the route of beneficiation used to obtain muscovite with the suitable characteristics for use in the synthesis of pearlescent pigments. Here, we summarise the beneficiation scheme in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Preparation and characterisation of pigments based on mica coated with rare earth oxides

Santos

França

Ogasawara

2011

Coloration Technology

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Muscovite from a Brazilian natural source was beneficiated using knife mills and an ultrasound treatment. It was possible to achieve mica with a particle size of below 100 and above 45 lm and a thickness of between 0.5 and 1 lm. This product could be used for the synthesis of intensely coloured pearlescent pigments based on muscovite covered with rare earth oxides (CeO 2 , PrO 2 and Ce 0.95 Pr 0.05 O 2 ). Pigments were prepared by hydrolysis and characterised by X-ray diffraction, thermal analyses (thermogravimetric ⁄ differential thermal) and scanning electron microscopy (MeV). The colour of the resulting pigments was analysed using the CIELab method, including a pearlescence index, and it showed the following colours: mica-CeO 2 , yellow; mica-PrO 2 , black; mica-Ce 0.95 Pr 0.05 O 2 , orange.

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Method for grinding and delaminating muscovite

Cited by 14 publications

References 13 publications

Sustainable Composites Based on Recycled High-density Polyethylene/mica

Sustainable Composites Based on Recycled High-density Polyethylene/mica

An investigation into the flotation of muscovite with an amine collector and calcium lignin sulfonate depressant

Preparation and characterisation of pigments based on mica coated with rare earth oxides

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