Process for separating and recovering rhodium and iridium from t

Details Process for separating and recovering rhodium and iridium from t Process for separating and recovering rhodium and iridium from t

1977-03-22

1978-03-28

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75118R, 75121, C22B 1104

Patent

active

040812715

ABSTRACT:
Process for separating and recovering rhodium and/or iridium from the other precious metals (Pd, Pt, Ru, Os, Au, Ag), according to which a solution containing the precious metals in any form is treated for a time between 15 minutes and 10 hours with carbon monoxide in the presence of a quantity of water or primary or secondary alcohols at least equal in weight to the total quantity of precious metals present, the crystalline precipitate which forms, and which contains all the noble metals except Rh and Ir in a state of high purity is separated and the Rh and/or Ir are recovered practically totally from the solution.

REFERENCES:
patent: 3457116 (1969-07-01), Arcano et al.
patent: 3887489 (1975-06-01), Fannin et al.

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