C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 7/00 (2006.01) C22B 5/16 (2006.01) H01M 6/52 (2006.01)
Patent
CA 2154936
A processing method by which metals may be recovered at a high purity from metal-containing waste materials. The method for processing metal-containing waste materials comprises crushing a metal-containing waste material to a particle size of 1-50 mesh, separating and recovering the metal-containing particles from the crushed portion, introducing the metal-containing particles into a vacuum heating furnace, pre-heating the furnace while under suction evacuation, and then raising the temperature of the furnace in stages while continuing the vacuum suctioning, recovering the metal and non-metal vapor produced at each temperature level using a condensing and adsorbing means, and recovering the liquated metals as melts. The method may be used to process waste batteries, copper-containing waste materials and the like in the same manner to recover high-purity metals.
Ogihara Teruhisa
Yokoyama Yoshiaki
Ogihara Teruhisa
Swabey Ogilvy Renault
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