Production and refining of magnesium metal from turkey originating dolomite

Yeliz Demiray*, Onuralp Yücel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this study crown magnesium produced from Turkish calcined dolomite by the Pigeon Process was refined and corrosion tests were applied. By using factsage thermodynamic program metalothermic reduction behavior of magnesium oxide and silicate formation structure during this reaction were investigated. After thermodynamic studies were completed, calcination of dolomite and it's metalothermic reduction at temperatures of 1473 K, 1523 K and within a vacuum (varied from 20 to 200 Pa) and refining of crown magnesium was studied. Different flux compositions consisting of MgCl2, KCl, CaCl 2, MgO, CaF 2, NaCl, and SiO 2 with and without B 2O 3 additions were selected for the refining process. These tests were carried out at 963 K for 15, 30 and 45 minutes setting time. Considerable amount of iron was transferred into the sludge phase and its amount decreased from 0.08% to 0.027%. This refined magnesium was suitable for the production of various magnesium alloys. As a result of decreasing iron content, minimum corrosion rate of refined magnesium was obtained 2.35 g=m2=day. The results are compared with previous studies.

Original languageEnglish
Pages (from-to)251-257
Number of pages7
JournalHigh Temperature Materials and Processes
Issue number3
Publication statusPublished - Jun 2012


Authors would like to thank the TUBITAK (The Scientific and Technological Council of Turkey), DPT (State Planning Organization) and ITU-BAP (Scientific Research Project Department) for financial support.

FundersFunder number
Scientific and Technological Council of Turkey
Devlet Planlama Örgütü


    • Crown magnesium
    • Refining
    • Silicothermic reduction


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