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The evolution of the utilization of mineral fillers in the paper industry

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Lewicka E., Lewicka E.
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk
|
2018
2
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Effects of Acid Treatment on the SEM-EDX Characteristics of Kaolin Clay

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Yahaya S., Jikan S. S., Badarulzaman N. A., Adamu A. D.
Path of Science
|
2017
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vol. 3
|
issue 9
4001-4005
EN
Raw kaolin was refluxed by sulphuric acid in variable concentrations of 2 M, 4 M, 6 M and 8 M. The morphology and elemental compositions of the acid-leached kaolin were analyse by Field Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray analysis (EDX) respectively. The disintegration and leaching of Al3+ ions of the clay are determined by FESEM studies. The acid treatment increases the silicon content and decreases aluminium content as revealed by EDX analysis. The leaching of Al3+ ions increases with gradual increase in concentration of the acid. Therefore, kaolin reflux with acid at lower strength (2 M and 4 M) are more dispersed and more industrially useful than that which is treated at higher acid strength.
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