Method for preparing ammonium perrhenate through efficient enrichment of rhenium

• Main Authors: CAO ZHILAN, ZHOU HUAYUAN
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2017
• Subjects: 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

The invention discloses a method for preparing ammonium perrhenate through efficient enrichment of rhenium and belongs to the field of rhenium recycling production technologies. The method comprises the following steps of (1), leaching of a rhenium-containing copper-arsenic filter cake material; (2), sediment and enrichment of the rhenium; (3), reverse dissolution of the rhenium; (4), crystallization of the ammonium perrhenate. The method is high in raw material adaption, small in equipment investment, high in metal recycling rate, high in production efficiency and capable of stably outputting the rough ammonium perrhenate with the industrial level being 99.9% or above. 本发明公开了种高效富集铼制备高铼酸铵的方法，包括如下步骤：第步，含铼铜砷滤饼物料的浸出；第二步，铼的沉淀富集；第三步，铼的反溶；第四步，高铼酸铵的结晶。本发明属于铼回收利用生产技术领域，具体是提供了种原料适应性强，设备投资小，金属回收率高，生产效率高，能稳定产出工业级3个9以上的粗高铼酸铵的方法。