Hydrometallurigcal process for producing finely divided spherica

Details Hydrometallurigcal process for producing finely divided spherica Hydrometallurigcal process for producing finely divided spherica

1987-03-16

1988-03-15

Stallard, Wayland

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 05B, 75 05C, B22F 924

Patent

active

047311100

ABSTRACT:
A process for producing finely divided spherical precious metal based powders comprises forming an aqueous solution containing a source of at least one precious metal value forming a solid reducible precious metal material from the solution, reducing the solid material to precious metal powder particles, subjecting the precious metal based particles to a high temperature zone to melt at least a portion of the precious metal based powder particles and cooling the molten material to form essentially spherical precious metal based alloy particles.

REFERENCES:
patent: 3909241 (1975-09-01), Cheney et al.
patent: 4670047 (1987-06-01), Kopatz et al.
patent: 4687511 (1987-08-01), Paliwal et al.

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