Uranium purification method for caustic dross leaching solution

• Main Authors: NIU YUQING, ZHI MEIFENG, ZHOU ZHIQUAN, ZHAO FENGQI, SHU ZUJUN, WANG HAO
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2020
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to the technical field of hydrometallurgy and particularly discloses a uranium purification method for a caustic dross leaching solution. The uranium purification method comprises the following steps of extraction, washing and reextraction. According to the uranium purification method, on one hand, the washing procedure and the extraction procedure form fractional extraction,and uranium and impurity elements are separated through the two steps of extraction and washing; and on the other hand, reextraction liquor of the uranium is adopted as a washing agent for backflow,and the uranium and impurity separating effect of the washing procedure is greatly improved. The uranium purification method has the beneficial effects that the separating efficiency is high; the uranium purification effect is good; economical efficiency is achieved; and the practicability is high. 本发明涉及湿法冶金技术领域，具体公开了一种碱渣浸出液的铀纯化方法，包括以下步骤：步骤一：萃取；步骤二：洗涤；步骤三：反萃取。本发明方法一方面将洗涤与萃取环节构成分馏萃取，通过萃取和洗涤两步来分离铀与杂质元素，另一方面将铀的反萃取液作为洗涤剂回流，极大地