Effect of Al2O3 Concentration on Density and Structure of (CaO-SiO2)-xAl2O3 Slag

Ramaraghavulu Rajavaram; Hyelim Kim; Chi Hoon Lee; Won Seung Cho; Chi Hwan Lee; Joonho Lee

doi:10.1007/s11663-017-0964-2

Effect of Al₂O₃ Concentration on Density and Structure of (CaO-SiO₂)-xAl₂O₃ Slag

Ramaraghavulu Rajavaram, Hyelim Kim, Chi Hoon Lee, Won Seung Cho, Chi Hwan Lee, Joonho Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The effect of Al₂O₃ concentration on the density and structure of CaO-SiO₂-Al₂O₃ slag was investigated at multiple Al₂O₃ mole percentages and at a fixed CaO/SiO₂ ratio of 1. The experiments were conducted in the temperature range of 2154 K to 2423 K (1881 °C to 2150 °C) using the aerodynamic levitation technique. In order to understand the relationship between density and structure, structural analysis of the silicate melts was carried out using Raman spectroscopy. The density of each slag sample investigated in this study decreased linearly with increasing temperature. When the Al₂O₃ content was less than 15 mole pct, density decreased with increasing Al₂O₃ content due to the coupling of Si (Al), whereas above 20 mole pct density of the slag increased due to the role of Al³⁺ ion as a network modifier.

Original language	English
Pages (from-to)	1595-1601
Number of pages	7
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	48
Issue number	3
DOIs	https://doi.org/10.1007/s11663-017-0964-2
Publication status	Published - 2017 Jun 1

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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title = "Effect of Al2O3 Concentration on Density and Structure of (CaO-SiO2)-xAl2O3 Slag",

abstract = "The effect of Al2O3 concentration on the density and structure of CaO-SiO2-Al2O3 slag was investigated at multiple Al2O3 mole percentages and at a fixed CaO/SiO2 ratio of 1. The experiments were conducted in the temperature range of 2154 K to 2423 K (1881 °C to 2150 °C) using the aerodynamic levitation technique. In order to understand the relationship between density and structure, structural analysis of the silicate melts was carried out using Raman spectroscopy. The density of each slag sample investigated in this study decreased linearly with increasing temperature. When the Al2O3 content was less than 15 mole pct, density decreased with increasing Al2O3 content due to the coupling of Si (Al), whereas above 20 mole pct density of the slag increased due to the role of Al3+ ion as a network modifier.",

author = "Ramaraghavulu Rajavaram and Hyelim Kim and Lee, {Chi Hoon} and Cho, {Won Seung} and Lee, {Chi Hwan} and Joonho Lee",

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AU - Rajavaram, Ramaraghavulu

AU - Kim, Hyelim

AU - Lee, Chi Hoon

AU - Cho, Won Seung

AU - Lee, Chi Hwan

AU - Lee, Joonho

PY - 2017/6/1

Y1 - 2017/6/1

N2 - The effect of Al2O3 concentration on the density and structure of CaO-SiO2-Al2O3 slag was investigated at multiple Al2O3 mole percentages and at a fixed CaO/SiO2 ratio of 1. The experiments were conducted in the temperature range of 2154 K to 2423 K (1881 °C to 2150 °C) using the aerodynamic levitation technique. In order to understand the relationship between density and structure, structural analysis of the silicate melts was carried out using Raman spectroscopy. The density of each slag sample investigated in this study decreased linearly with increasing temperature. When the Al2O3 content was less than 15 mole pct, density decreased with increasing Al2O3 content due to the coupling of Si (Al), whereas above 20 mole pct density of the slag increased due to the role of Al3+ ion as a network modifier.

AB - The effect of Al2O3 concentration on the density and structure of CaO-SiO2-Al2O3 slag was investigated at multiple Al2O3 mole percentages and at a fixed CaO/SiO2 ratio of 1. The experiments were conducted in the temperature range of 2154 K to 2423 K (1881 °C to 2150 °C) using the aerodynamic levitation technique. In order to understand the relationship between density and structure, structural analysis of the silicate melts was carried out using Raman spectroscopy. The density of each slag sample investigated in this study decreased linearly with increasing temperature. When the Al2O3 content was less than 15 mole pct, density decreased with increasing Al2O3 content due to the coupling of Si (Al), whereas above 20 mole pct density of the slag increased due to the role of Al3+ ion as a network modifier.

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Effect of Al₂O₃ Concentration on Density and Structure of (CaO-SiO₂)-xAl₂O₃ Slag

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