Viscosity measurements of the SiO2–K2O–CaO system relevant to biomass slags

Chen, Mao and Zhao, Baojun (2016) Viscosity measurements of the SiO2–K2O–CaO system relevant to biomass slags. Fuel, 180 638-644. doi:10.1016/j.fuel.2016.04.099


Author Chen, Mao
Zhao, Baojun
Title Viscosity measurements of the SiO2–K2O–CaO system relevant to biomass slags
Formatted title
Viscosity measurements of the SiO2–K2O–CaO system relevant to biomass slags
Journal name Fuel   Check publisher's open access policy
ISSN 0016-2361
1873-7153
Publication date 2016-09-15
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.fuel.2016.04.099
Open Access Status Not Open Access
Volume 180
Start page 638
End page 644
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2017
Language eng
Formatted abstract
The present study delivered the measurements of viscosities in SiO2–K2O–CaO system which is important for many applications including biomass slags. The rotational spindle technique was used in the measurements in the composition range of 49.8–78.2 mol% SiO2 and 7.7–29.5 mol% K2O and temperature range of 997–1601 °C. Molybdenum crucibles and spindles were employed in all measurements in ultrahigh purity argon. Analysis of the quenched sample by Electron Probe X-ray Microanalysis (EPMA) after the viscosity measurement enables the composition and microstructure of the slag to be directly linked with the viscosity. The increase of SiO2 concentration has been proved to significantly increase both viscosity and activation energy. The replacement of CaO by K2O was found to decrease viscosity and activation energy of the SiO2–K2O–CaO slags. The viscosities of the industrial biomass slag are compared with the synthetic slags. Predictions of the viscosity from several models are also compared with the experimental data from the present study and literatures.
Keyword SiO2–K2O–CaO
Viscosity
Activation energy
Biomass
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Created: Sun, 01 May 2016, 14:55:55 EST by Mr Mao Chen on behalf of School of Chemical Engineering