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The Production of Tantalum Powder by MR and EMR Method  

Bae, In Seong (Korea Research Institute of Rare Metals, Sunchon Nat. Uni.)
Park, Hyeoung Ho (Korea Research Institute of Rare Metals, Sunchon Nat. Uni.)
Kim, Byung Il (Material Science and Metallurgical Engineering, Sunchon Nat. Uni.)
Publication Information
Journal of the Korean Society for Heat Treatment / v.15, no.1, 2002 , pp. 16-20 More about this Journal
Abstract
In conventional metallothermic reduction(MR) for obtaining tantalum powder in batch-type operation, it is difficult to control morphology and location of deposits because the reaction occurs by direct physical contact between reductants and feed materials. On the other hand, a electronically mediated reaction(EMR) is capable to overcome these difficulties through the reaction by electron transfer and have a merit of continuous process. In this study an MR and EMR method has been applied to the production of a tantalum powder by sodium reduction of $K_2TaF_7$. As the reduction temperature increases, the particle size and yield of tantalum powder obtained by MR and EMR method is increased.
Keywords
Tantalum powder; Continuous process; Metallothermic reduction(MR); Electronically mediated reaction(EMR); particle size; Yield;
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