种利用电石渣步中和钛白废酸制备高纯度钪的方法

• Format: Patent
• Language: Chinese
• Published: 16.06.2017
• 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

本发明涉及种利用电石渣步中和钛白废酸制备高纯度钪的方法，该方法包括步中和、压滤、浓缩、除杂、萃取、酸溶、二次酸溶及复盐沉淀、草酸沉淀、回收等步骤，得到纯度为99.9~99.99%的氧化钪，钪元素回收率≥80%。本发明实现了钛白废酸中钪元素的高效回收和高纯度制备，既实现了两种废弃物的回收利用，又大大降低了环保运行费用，产品氧化钪市场需求大、价值高，具有良好的社会效益、生态效益和经济效益。