Abstract

• The annealing process of ore mineral which is important for designing scientific and economic schedule. The samples were collected from Pharchaung Mine in Tanintharyi Region. The 70% wolframite sample (Fe,Mn)WO4 was prepared by magnetic separation method and ore mineral of (Fe,Mn)WO4 were collected in this mine. In this research work, to emphasize the value of considering wolframite as thermal reactions and chemical reactions methods. The behavior of structural tile were investigated using thermal analysis techniques. The weight loss of 70% wolframite sample (Fe,Mn)WO4 was observed from TG curve and the phase transition occurred from DTA curve. The crystal structure of 70% (Fe,Mn)WO4 powder and ore mineral of (Fe,Mn)WO4 were observed by XRD and also the phase changes of this powder were investigated at 450C and 500C in three hour. And also demonstrated its application to provide a better understanding of the occurrence and origin of wolframite minerals. Aqueous solution containing sodium hydroxide (NaOH) was used as the alkaline leaching media and it was the most beneficial agent stabilizing the solid phase in the aqueous environment.