Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1992-11-12
1994-08-30
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210638, B01D 1104
Patent
active
053425260
ABSTRACT:
Disclosed herein are an extracting agent for precious metal having the below foretold and a process of extracting precious metals employing the said extracting agent from a hydrochloric acid solution containing the precious metals. Further, by controlling the concentration of the hydrochloric acid solution and the extraction time, the separation of the metals can be performed. ##STR1##
REFERENCES:
patent: 5045290 (1991-09-01), Harris et al.
Baba Yoshinari
Inoue Katsutoshi
Tazaki Masato
Yoshizuka Kazuharu
Spear Frank
Tanaka Kikinzoku Kogyo K.K.
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