Recovery of group III element component from group III-V waste m

Details Recovery of group III element component from group III-V waste m Recovery of group III element component from group III-V waste m

1998-01-21

2000-10-03

Warden, Jill

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75688, 423304, 588246, C22B 700

Patent

active

061267198

ABSTRACT:
The present invention is directed to an apparatus and method for recovering the group III elemental component of a group III-V material waste material. The method includes heating, under a reduced pressure, solid waste materials which contain group III-V material to cause the group III-V material to separate into a group III element and a group V element vapor; drawing off the group V element vapor; condensing the group V element vapor to produce a condensed group V element solid; and zone refining the group III element to produce a purified group III element. The apparatus is designed to carry out this method in the plant which manufactures the group III-V waste material.

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