Structural, dielectric and surface morphological properties of ball clay with wet grinding for ceramic electrical insulators

Purohit, A.; Chander, Subhash; Hameed, Amer; Singh, Prakash; Dhaka, M.S.

doi:10.1016/j.matchemphys.2016.06.070

Cited by 13 publications

(9 citation statements)

References 36 publications

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“…Furthermore, a gradual reduction in the intensity of the characteristic reflection of feldspars (29.25°2θ) was also detected. Similar observations were described by Purohit et al (2016) [35], who found that the wet grinding treatment did not significantly change the elemental structure of aluminosilicate and resulted in a slight purification described by the absence of alkaline-earth and alkaline oxides in the final product. These data were corroborated by the results obtained from the EDX elemental analysis.…”

Section: Powder X-ray Diffractionsupporting

confidence: 89%

Full-factorial design for statistical planning of attritor milling parameters and evaluation of effects on particle size and structure of sodium-montmorillonite

et al. 2020

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High-energy milling is the most widely used method in industry to achieve nanosized particles due to its low cost and potential to rapidly provide large-scale production. Using a top-down approach based on wet attritor milling, we investigated different combinations of the factors predicted from the 2 3 full-factorial design were investigated to process sodium-montmorillonite (Na-Mt). Statistical analyses were performed to determine the most suitable process conditions and to evaluate the factors influencing the response variable. Materials obtained from the different procedures were analyzed by energy dispersive x-ray spectroscopy, powder x-ray diffraction, nuclear magnetic resonance, Fourier transform infrared spectroscopy and dynamic light scattering. Particle surface, size and morphology were examined by scanning electron microscopy while the lamellar structure was observed by transmission electron microscopy. The results predicted using factorial design indicated that the milling time has a significant positive influence on the particle size of Na-Mt. The effect of rotation speed was nearly comparable and its impacts was similar to that of milling time. The interaction effects were significant at 99% confidence level (p<0.01). The optimal process conditions were: 3% Na-Mt concentration (w/v), 3 h of milling time and a rotation speed of 1867 rpm, resulting in a particle size of 282.23 nm. The proposed factorial model proved to be reliable and adequate (R 2 =0.9853, PredR 2 =0.9753 and AdjR 2 =0.9804). The wet attritor milling can be considered as an economical and effective alternative for the mechanical treatment of a wide variety of powders, aiming to achieve nanosized structures.

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Section: Powder X-ray Diffractionsupporting

confidence: 89%

Full-factorial design for statistical planning of attritor milling parameters and evaluation of effects on particle size and structure of sodium-montmorillonite

et al. 2020

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“…The quartz and kaolinite mineral typically are the composition of raw materials composed of kaolin, ball clay, and silica 22,23 . The microcline is the major component of k‐feldspar that is used as a fluxing agent in this work 24 .…”

Section: Resultsmentioning

confidence: 99%

“…The phase compositions of the solid samples at various hydroxyapatite content in the range of 0-15 wt% hydroxyapatite before heat treatment were investigated by XRD and shown in Figure 3 The quartz and kaolinite mineral typically are the composition of raw materials composed of kaolin, ball clay, and silica. 22,23 The microcline is the major component of k-feldspar that is used as a fluxing agent in this work. 24 The albite phase was found as an impurity in k-feldspar that corresponds to the chemical compositions in Table 1.…”

Section: Phase Compositions Of Ceramic Samplesmentioning

confidence: 99%

Replacement of hydroxyapatite from chicken eggshell waste for ceramic properties improvement

Sangmala

Naemchanthara

Limsuwan

et al. 2021

Int J Applied Ceramic Tech

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The chicken eggshell waste from food processing was synthesized as the hydroxyapatite for fluxing agent replacement in ceramic manufacturing. The main fluxing agents in Thailand ceramic manufacturing are natural potash feldspar (k‐feldspar) and animal bone ash. To overcome the problems of inconstant properties and the lack of k‐feldspar, the hydroxyapatite from chicken eggshell waste was selected as fluxing agent for the enhancement of the ceramic product. In this work, the hydroxyapatite with 0, 5, 10, and 15 wt% was replaced with the k‐feldspar in the ceramic samples. The results revealed the physical and mechanical properties of the ceramic samples with various hydroxyapatite contents were investigated after heat treatment in the temperature range of 1000–1200 °C. The ceramic samples added with hydroxyapatite have higher linear shrinkage and bulk density as compared with the ceramic sample without hydroxyapatite. The apparent porosity and water absorption decreased to near zero after the heat treatment at a temperature of 1200 °C. Moreover, the results showed that the physical properties affected the mechanical properties improvement after the hydroxyapatite addition and heat treatment process.

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“…Because of the abundance of clays on the earth's surface and due to their ability to undergo transformations in different ways [1][2][3][4], these solids are involved in many applications: pharmaceuticals, petroleum, chemical, wastewater treatment, catalysis, …etc. [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of different wet milling on the properties of an attapulgite clay, contribution of inverse gas chromatography

et al. 2021

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An experimental study, using size measurements, X-ray diffraction (XRD), scanning electron microscopy (SEM) and inverse gas chromatography at infinite dilution (IGC-ID) and finite concentration (IGC-FC) conditions, has been carried out to evaluate, respectively, the changes of particles size, crystalline phases, morphology and surface properties evolution of attapulgite powder after grinding in wet media. The particles size decreases significantly after grinding in ball mill in different liquid media. The SEM analysis shows that the fibers are preserved during grinding in aqueous media. With IGC-ID, after grinding using wet ball milling in hydrochloric acid, the values of γ s d determined by injection of alkane probes decrease significantly because of the disappearance of the insertion sites able to retain the probes. In the same grinding conditions, with IGC-FC, the specific surface area obtained with octane probe increases significantly from 114 m 2 /g to 156 m 2 /g.

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Structural, dielectric and surface morphological properties of ball clay with wet grinding for ceramic electrical insulators

Cited by 13 publications

References 36 publications

Full-factorial design for statistical planning of attritor milling parameters and evaluation of effects on particle size and structure of sodium-montmorillonite

Full-factorial design for statistical planning of attritor milling parameters and evaluation of effects on particle size and structure of sodium-montmorillonite

Replacement of hydroxyapatite from chicken eggshell waste for ceramic properties improvement

Influence of different wet milling on the properties of an attapulgite clay, contribution of inverse gas chromatography

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