Method for recovering platinum in a nitric acid plant

Details Method for recovering platinum in a nitric acid plant Method for recovering platinum in a nitric acid plant

1983-04-27

1985-02-05

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

428567, 428593, 423403, 242 62, C22B 1100, B22F 300

Patent

active

044976577

ABSTRACT:
Improved recovery of platinum lost from the catalyst gauze in a nitric acid plant is obtained by using palladium containing recovery gauzes configured to enhance the mass transfer characteristics of the system.

REFERENCES:
patent: 2648393 (1953-01-01), Holzmann
patent: 2730189 (1956-01-01), Holzmann
patent: 2747679 (1956-01-01), Ruthardt
patent: 3434826 (1969-03-01), Holzmann
patent: 4239833 (1980-12-01), Retmaniak
patent: 4412859 (1983-11-01), Hatfield et al.
Heywood A. E., "The Recovery of Platinum from Ammonia Oxidation Catalysts," Johnson, Matthey Metals Limited, pp. 28-32.
"Platinum Metals Review," vol. 13, Jan. 1969, No. 1, Johnson, Matthey & Co., London eds.
Holzmann, H.(4), "Platinum Recovery in Ammonia Oxidation Plants," Platinum Metals Review, vol. 13, (No. 1), pp. 2-8, Jan. 1969.
Roberts, D. et al., "Estimation of Platinum Catalyst Requirement for Ammonia Oxidation," Advance in Chemistry Series, No. 133, Chemical Reaction Engineering II, 1974, A.C.S.
Holzmann, H.(5), "Platinum Recovery on NH.sub.3 Combustion on Platinum Rhodium Grid Catalysts," Chemie-Ingenuis-Technic, vol. 40, (1968).

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