Method for preparing ammonium perrhenate

The invention relates to the technical field of rhenium recycling and in particular relates to a method for preparing ammonium perrhenate. The ammonium perrhenate is prepared by purifying rhenium-enriched recovery liquid obtained by enrichment of poor-rhenium stock solution, and the rhenium-enriched...

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Bibliographische Detailangaben
Hauptverfasser:	PAN SHUOSHI, FAN JIAFU, ZHAO WEIGEN, CHU HUIHUI
Format:	Patent
Sprache:	eng
Schlagworte:	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 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to the technical field of rhenium recycling and in particular relates to a method for preparing ammonium perrhenate. The ammonium perrhenate is prepared by purifying rhenium-enriched recovery liquid obtained by enrichment of poor-rhenium stock solution, and the rhenium-enriched recovery liquid is subjected to vacuum concentration, heating decomposition and dissolution-crystallization so as to prepare ammonium perrhenate. The method comprises the following steps: step 1, performing vacuum concentration to prepare a concentrated crystal; step 2, performing heating decomposition to collect rhenium heptoxide solids; step 3, performing dissolution-crystallization to prepare ammonium perrhenate; and step 4, recycling molybdenum and rhenium. According to the method disclosed by the invention, molybdenum and rhenium can be effectively separated from each other, and high-grade ammonium perrhenate can be prepared; and moreover, the poor-rhenium stock solution serves as a raw material, the raw materials are wide and readily available, and integrated resource recycling is realized.