Determination of Magnesium Production Parameters by Metalothermic Reduction Method


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Bayrak Y. , Ekerim A.

1. INTERNATIONAL TECHNOLOGICAL SCIENCES AND DESIGN SYMPOSIUM, Giresun, Türkiye, 27 - 29 Haziran 2018, ss.1105-1112

  • Basıldığı Şehir: Giresun
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1105-1112

Özet

In magnesium production via metallothermic reduction; silicon (Si) or ferro-silicon (Fe-Si) is the first to come to mind as a reducing material. Beside this, aluminum (Al) and very rarely carbon (C) are used. Furthermore, even if calcium carbide (CaC2) is present as another reducing agent in the literature, commercial use of it is not feasible because the purity of the produced metal is lower than the others. In this study, reduction of magnesium oxide (MgO) was carried out using aluminum metal chips as the reducing agent. A mixture of MgO and Al was prepared by stoichiometry ratio of Al/Mg equals to 1/1, and CaO-containing slag was also added as a fluxing agent. This mixture was pressed into a mold under constant force (100Bar). Reduction experiments were carried out in an electric arc furnace under an argon atmosphere. Reduction process was carried out in 1, and 1.5 minutes by applying currents of 400, 500 and 600 Amperes. The chemical properties of the obtained magnesium wase characterized by XRF and XRD analysis.