doi: 10.18178/ijesd.2017.8.2.934
Industrial Waste as Raw Material for Producing Synthetic Wollastonite in Russia
Sofia B. Yarusova1
, , , ,
- 1Institute of Chemistry, Far-Eastern Branch of
- 2Institute of
- 3the Department of Chemistry, Indian Institute
- 4Far-Eastern Federal University; 8 Sukhanova
Abstract
In this paper we present the results of analysis ofthe scientific and technical literature concerning the ways ofobtaining wollastonite from various calcium andsilicon-containing technogenic wastes accumulated on theterritory of the Russian Federation. We proposed a method forproducing autoclave needle-like wollastonite from waste of boricacid (borogipsa) containing both calcium and siliconconstituents. The phase composition and morphology of theproducts autoclaving borogipsa were studied. It is found that theinitial product has a crystalline phase of unreacted calciumsulfate anhydrous, tobermorite and xonotlite. After firing at1000 °C, the amorphous calcium hydrosilicates are converted toa crystalline phase of wollastonite triclinic modification. Theeffect of firing temperature on phase composition andmorphology of the compounds obtained by autoclave treatmentwere described. It is shown that with increase of the firingtemperature up to 1200 °C along with a phase change, thecomposition variation of the particle morphology occurs. It isfound that the processing borogipsa to obtain needle-likewollastonite recommended firing temperature should not exceed1000 °C.
Keywords
- Industrial waste
- wollastonite
- borogypsum
How to Cite
Sofia B. Yarusova, Pavel S. Gordienko, Yogesh C. Sharma, Aleksandr V. Perfilev, and Andrey V. Kozin, "Industrial Waste as Raw Material for Producing Synthetic Wollastonite in Russia," International Journal of Environmental Science and Development, vol. 8, no. 2, pp. 130-134, 2017. https://doi.org/10.18178/ijesd.2017.8.2.934
Copyright & License
Copyright © 2017 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).