Apparatus and method for extraction and recovery of precious met

Details Apparatus and method for extraction and recovery of precious met Apparatus and method for extraction and recovery of precious met

1988-01-29

1989-03-21

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 63, 75 83, C22B 400

Patent

active

048140031

ABSTRACT:
Apparatus and method for extracting and recovering precious metals from source materials, such as ore materials, incorporating these components, includes conditioning the ore to have particle dimensions less than a predetermined size. The resulting particles are exposed to coherent radiation of sufficient intensity that, after focusing, the radiation can vaporize or melt precious metals incorporated in the particles or change the particles themselves. The processed ore particles are removed from the processing site. The processing site can have an inert gas environment, the inert gas carrying the precious metal vapor to a site in which condensation and filter apparatus removes the vaporized precious metal from the inert gas. When the precious metals are melted, the solidification of the melted precious metals typically occurs on the exterior of the particle originally incorporating the precious metals. The process is applicable, not only to ores, but also to waste or resulting process materials such as "fly ash", "sludge ash" or any other materials in which the recovery components are present in sufficient quantitites to make the process economically feasible.

REFERENCES:
patent: 3148971 (1964-09-01), MacDonald
patent: 4685963 (1987-08-01), Saville

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