METHOD OF PRODUCING RHENIUM POWDERS Russian patent published in 2011 - IPC B22F9/22 

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, namely, to production of rhenium powders. Method comprises reducing ammonium perrhenate using gaseous hydrogen-containing reducer in continuous process: first, in atmosphere of hydrogen and nitrogen with their ratio of 1.0:(0.5-1.0) with temperature rise rate of 150-200°C/h to 450-500°C and keeping for 1.0-1.5 h with subsequent temperature rise to 750-800°C at the rate of 300-400°C/h and keeping at this temperature for 0.5-2.0 h.

EFFECT: producing rhenium particle size of 0,2-0,5 mcm and homogeneous fraction composition (fraction yield of 95-98%) and high bulk density of (7,8 - 8,1 g/cm³).

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