42 results about "Terbium chloride" patented technology

The invention discloses a method for preparing high-purity terbium oxide, belonging to the technical field of rare-earth separation. The method comprises the following steps of feeding mixed rare-earth oxide, hydrochloric acid and pure water into a container with a stirring device and a heating device, stirring, and filtering so as to obtain a mixed rare-earth chloride solution; adding the mixed rare-earth chloride into another container with a stirring device, and continuously stirring so as to obtain a separated material; by taking the separated material as a raw material, continuously extracting and separating by using a first extraction agent, a caustic soda liquid and a returning fluid so as to obtain a rich terbium chloride solution; by taking the rich terbium chloride solution as another raw material, adding a second extraction agent and the returning fluid, further extracting and separating so as to obtain a high-purity terbium chloride solution; introducing the high-purity terbium chloride solution into a settling pond, and filtering so as to obtain solid oxalate terbium; and introducing the solid oxalate terbium into a roller table type tunnel kiln for firing, controlling the firing temperature and the firing time, discharging from the roller table type tunnel kiln so as to obtain high-purity terbium oxide, wherein the purity of the terbium oxide is 99.9%. The first-pass yield is high, and the preparation cost is low.

The invention belongs to the field of low-temperature electrochemical extraction and particularly relates to a method for preparing an aluminum-based rare earth alloy through near-room-temperature electrolysis. The method for preparing the aluminum-based rare earth alloy through near-room-temperature electrolysis is an electrolytic method, and a electrolyte adopted by the electrolytic method is formed by rare earth chloride and ionic liquid, wherein the ionic liquid accounts for 96-98% of the total mass of the electrolyte, the rare earth chloride accounts for 2-4% of the total mass, and the rare earth chloride is one of neodymium chloride, lanthanum chloride, cerium chloride, scandium chloride, yttrium chloride, praseodymium chloride, samarium chloride, europium chloride, gadolinium chloride and terbium chloride. According to the technological for preparing the aluminum-based rare earth alloy through near-room-temperature electrolysis, operation is easy, and cost is low; and the technological reserve and theoretical support are provided for green extraction of the low-cost aluminum-based rare earth alloy.