公开(公告)号：JP2001058823A

公开(公告)日：2001-03-06

申请号：JP2000189116

申请日：2000-06-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BOHRER MICHAEL P ,  PO-YEN LU ,  SEIBLES LAWRENCE

IPC: B01J19/00 ,  C01B9/02 ,  C01G17/04 ,  C22B5/12 ,  C22B7/00 ,  C22B41/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for recovering germanium from modified chemical vapor deposition(MCVD) processing wastes. SOLUTION: The system and method comprise recovering germanium from MCVD processing wastes by carrying out a chemical conversion from a solid cake product. In the method, rapid and complete chlorination of a germasium salt is conducted by direct reaction of hydrogen chloride gas with the MCVD wastes (filter cake) to produce germanium tetrachloride. The germanium tetrachloride product is completely volatilized and removed from the mixture during the exothermic reactional process. The GeCl4 product is then recovered by a cryogenic method.