Effects of Na₂O and B₂O₃ Addition on Viscosity and Electrical Conductivity of CaO–Al₂O₃–MgO–SiO₂ System

Abstract

The present study was aimed at investigating the effect of Na₂O and B₂O₃ addition on the viscosity and electrical conductivity of slag which was used for mineral wool production. Industrial slag samples of the CaO–Al₂O₃–MgO–SiO₂ system were used to modify its composition with different Na₂O and B₂O₃ addition content and soaked at a certain temperature range (1400–1500°C). Raman spectrum was used to represent the structure of the slag system. Results showed that the Na₂O addition modified process had a larger effect on the two parameters (macro aspect) and the relative fraction of the structural units (micro aspect) compared with the results of B₂O₃ addition.

Schematic illustration of experimental apparatus: (a) Measurement diagram, (b) Size and position of Mo electrode and Mo spindle in the model and actual measurement.