METHOD OF SELECTIVE EXTRACTION OF METALS OF PLATINUM GROUP FROM GAS PHASE AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2003 - IPC

FIELD: metallurgy; production of metals of platinum group by gas lift method. SUBSTANCE: proposed method includes synthesizing gaseous trifluorophosphine complex compounds of metals of platinum group from starting raw material by passing trisfluorophosphine through it. Metals of platinum group are separated from said complex compounds by passing gaseous trifluorophosphine complexes through at least two reactors located in series for pyrolytic separation of metal. Heating temperature of each reactor corresponds to decomposition temperature of trifluorophosphine of this metal. Device proposed for selective extraction of metals of platinum group includes synthesis reactor for pumping starting raw material of trifluorophosphine by means of pump Synthesis reactor is provided with low-temperature column at its outlet. Mounted at column outlet are at least two reactors arranged in series for isothermal gas lift pyrolytic separation of metals. Said reactors are provided with metal receiver; Provision is made for hating each reactor and holding temperature corresponding to decomposition temperature of trifluorophosphine of definite metal of platinum group. EFFECT: possibility of extraction of metals at simultaneous separation. 7 cl, 1 dwg