Recovery of precious metal

Details Recovery of precious metal Recovery of precious metal

1984-03-19

1985-04-16

Padgett, Ben R.

Chemical apparatus and process disinfecting, deodorizing, preser

Elements or adjuncts

Bed support means

422211, 423392, 423403, 75 83, 55526, 55527, B01J 1904, C01B 2128, C22B 1102

Patent

active

045115397

ABSTRACT:
The invention relates to the recovery of precious metal lost from precious metal-containing catalysts for example the precious metal-containing catalysts which are used in the production of nitric acid by ammonia oxidation. In more detail, a getter (as herein defined) for recovery of precious metal lost from a precious metal-containing catalyst operating at elevated temperature comprises an agglomeration or assemblage of unwoven fibres made from a metal selected from the group ruthenium, palladium, iridium, platinum, gold, silver, rhodium and alloys containing one or more of the said metals. Preferably, the unwoven fibres are randomly oriented.

REFERENCES:
patent: 2730189 (1956-01-01), Holzmann
patent: 3127668 (1964-04-01), Troy
patent: 3434826 (1969-03-01), Holzmann
patent: 3627497 (1971-12-01), Klein et al.
patent: 3660024 (1972-05-01), Gillespie
patent: 3776701 (1973-12-01), Hunter
patent: 3865555 (1975-02-01), Elebracht et al.
patent: 4351887 (1982-09-01), Bishop et al.
patent: 4412859 (1983-11-01), Hatfield et al.
"Nitric Acid Rolls On", in Chem. Eng., Jun. 29, 1970, pp. 24-25.

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