Indium adsorbing agent and method for separating indium

• Main Author: OHNISHI AKIFUSA,FUJIWARA NOBUAKI,DOI HIDEKI,MATSUNAMI TOYOKAZU,TSUBOTA HIROSHI,MURATANI TOSHIAKI,NISHIKAWA SHOJI,YAMASAKI SHINICHI,HONMA TAKAMICHI
• Format: Patent
• Language: English
• Published: 08.08.2007
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The present invention provided a method which can be used for separating and recovering high purity indium from a hydrochloric acid solution containing indium with ease at a low cost. An indium adsorbing agent which comprises, as a primary component, an anion-exchange resin having a cross-linked structure formed by the copolymerization of styrene or acrylonitrile and divinyl benzene and anyone of a quaternary ammonium group and a tertiary ammonium group and also having a capability of adsorbing an acid; and a method for separating indium, which comprises contacting an acid solution having hydrochloric acid as a primary component and containing indium with the above anion-exchange resin, to allow the anion-exchange resin to adsorb indium.