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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


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 languageEnglish
Pages (from-to)1595-1601
Number of pages7
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Issue number3
Publication statusPublished - 2017 Jun 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Effect of Al2O3 Concentration on Density and Structure of (CaO-SiO2)-xAl2O3 Slag'. Together they form a unique fingerprint.

Cite this