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Preparation of Nano-Sized Wollastonite Using Calcium Silicate Residue of Potassium Feldspar after Extraction of Potassium and Alumina

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Abstract:

In this paper, wollastonite nanopowder were successfully synthesized by the surfactants modified-calcined method using calcium silicate residue of potassium feldspar after extraction of potassium and alumina. The effects of modifier and calcined temperature on the phase composition, morphology and microstructure were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the phase of samples with different modifier processing is wollastonite-2M, while CTAB as modifier can avoid preferred orientation growth. The obtained wollastonite powder is spherical in morphology and well dispersed with the particle size of approximately 150nm.

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Periodical:

Key Engineering Materials (Volume 633)

Pages:

35-38

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.633.35

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Online since:

November 2014

Authors:

Jian Chen, Jing Yang*, Hong Wen Ma

Keywords:

Nano Powder, Potassium Feldspar, Residue, Wollastonite

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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