Effect of CaO/SiO2 and Fe/SiO2 Ratios on the Viscosity at 1300°C of Partly Crystallized Silicate Slags

Autor:	Isaias Almaguer-Guzman, Antonio Romero-Serrano, Alejandro Cruz-Ramírez, Aurelio Hernández-Ramírez, Manuel Flores-Favela, Josué López-Rodríguez, Hugo Pelaez-Ramirez
Rok vydání:	2021
Předmět:	Materials science Analytical chemistry Viscometer chemistry.chemical_element Slag Mass ratio Condensed Matter Physics Sulfur Silicate Viscosity chemistry.chemical_compound chemistry Phase (matter) visual_art Materials Chemistry Ceramics and Composites Slurry visual_art.visual_art_medium
Zdroj:	Glass Physics and Chemistry. 47:75-82
ISSN:	1608-313X 1087-6596
DOI:	10.1134/s1087659621020048
Popis:	The present study reports an experimental investigation of the effects of CaO/SiO2 mass ratio (0.4 to 1.2) and Fe/SiO2 ratio (1.26 and 1.7) on viscosity of the heterogeneous system of the CaO–SiO2–FeO–Fe2O3–PbO–MgO–ZnO–S slag at 1300°C. The viscosity was measured using rotating cylindrical viscometer, and structure of quenched slags was studied by X-ray diffraction and SEM-EDS analysis. It was found that the viscosity of the slurry decreased with an increase in CaO/SiO2 ratio and increased with an increase in Fe/SiO2 ratio. The sulphur content in the slag decreases the FeO/Fe2O3 ratio in the liquid slag and consequently increases the viscosity. The FactSage thermodynamic software is utilized for the phase equilibrium and viscosity predictions. The effect of solid fractions in slag phase on the viscosity is calculated using the Einstein–Roscoe equation. Calculations show that an increase in solid fractions increases the viscosity of the slag phase.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3c111f96054d8c37898bdc163a4f3a7e https://doi.org/10.1134/s1087659621020048 Zobrazit plný text záznamu Full text from SpringerLink