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Information Journal Paper

Title

THE STUDY OF SYNTHETIC WOLLASTONITE FROM THE CACO3 STONE WASTES

Pages

 Start Page 57 | End Page 66

Abstract

 Use of WOLLASTONITE (CaSiO3) in different industries has caused attension to produce this mineral artificially. Stone industry in Iran makes several million tones of STONE WASTE per year which can be used as a source of CaCo3. In this study combinations of STONE WASTE, microsilica, silica, calcium carbonate with different sizes of 400, 800, 1500, 2500 mesh are used. By different compositions, different Ca/SiO2 ratios are fired at 1100 to 1400oC. AUTO CLAVE test is used to measure free CaO and optical microscopy, XRD and SEM studies are performed. Results show that CaO/SiO2 ratio of 0.85 fired at 1300°C is the best.

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