METHOD OF TANTALUM RECEIVING Russian patent published in 2009 - IPC C22B34/24 C22B5/04 B22F9/18 

FIELD: metallurgy.

SUBSTANCE: invention concerns rare-metal industry. Particularly it concerns receiving of metallic tantalum by metallothermic reduction of its salts. For receiving of metallic tantalum charge, containing mixture of double complex chloride salt of tantalum - KTaCl₆ and potassium chloride - KCl in ratio 1:(0.2÷0.5) by mass are fed by portions or uninterruptedly in the form of powder or melt on melt mirror of metallic sodium, taken in excess 60-80% of stoichiometrically necessary amount. Reduction is implemented at temperature 550-650°C, with speed of charge feeding 15-20 g/cm²·hour of area melt mirror of metallic sodium melt. Received reduced reactionary mass is subject to vacuum- thermal processing at temperature 500-540°C and residual pressure, not exceeding equilibrium pressure of sodium steams at temperature of vacuum- thermal processing of unreacted sodium. After vacuum- thermal processing it is implemented hydro metallurgical treatment of reactionary mass.

EFFECT: exclusion of ecological pollution of environment.

4 cl, 2 tbl, 2 ex