TY - JOUR
T1 - Production and refining of magnesium metal from turkey originating dolomite
AU - Demiray, Yeliz
AU - Yücel, Onuralp
PY - 2012/6
Y1 - 2012/6
N2 - 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.
AB - 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.
KW - Crown magnesium
KW - Refining
KW - Silicothermic reduction
UR - http://www.scopus.com/inward/record.url?scp=84866599767&partnerID=8YFLogxK
U2 - 10.1515/htmp-2012-0007
DO - 10.1515/htmp-2012-0007
M3 - Article
AN - SCOPUS:84866599767
SN - 0334-6455
VL - 31
SP - 251
EP - 257
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
IS - 3
ER -