The present invention provides a method for recovery, extraction and separation of rare earth elements from rare earth containing materials such as ore and tailings. In accordance with preferred embodiments, the method of the present invention includes grinding rare earth-containing ores to form ore powder and leaching the powered ore with at least one mineral acid. Further, the method of the present invention includes forming a leach solution of metal ions, forming an aqueous-metal concentrate, and precipitating the aqueous-metal concentrate to selectively remove the metal ions from the leach solution. Further, the method of present invention includes the steps of obtaining a precipitate of the rare earth elements, mixing the precipitate with ammonium salt and subjected the mixture to an electrowinning process.

A method of recovering metals from electronic waste comprises providing a powder comprising electronic waste in at least a first reactor and a second reactor and providing an electrolyte comprising at least ferric ions in an electrochemical cell in fluid communication with the first reactor and the second reactor. The method further includes contacting the powders within the first reactor and the second reactor with the electrolyte to dissolve at least one base metal from each reactor into the electrolyte and reduce at least some of the ferric ions to ferrous ions. The ferrous ions are oxidized at an anode of the electrochemical cell to regenerate the ferric ions. The powder within the second reactor comprises a higher weight percent of the at least one base metal than the powder in the first reactor. Additional methods of recovering metals from electronic waste are also described, as well as an apparatus of recovering metals from electronic waste.

A method of recovering metals from electronic waste comprises providing a powder comprising electronic waste in at least a first reactor and a second reactor and providing an electrolyte comprising at least ferric ions in an electrochemical cell in fluid communication with the first reactor and the second reactor. The method further includes contacting the powders within the first reactor and the second reactor with the electrolyte to dissolve at least one base metal from each reactor into the electrolyte and reduce at least some of the ferric ions to ferrous ions. The ferrous ions are oxidized at an anode of the electrochemical cell to regenerate the ferric ions. The powder within the second reactor comprises a higher weight percent of the at least one base metal than the powder in the first reactor. Additional methods of recovering metals from electronic waste are also described, as well as an apparatus of recovering metals from electronic waste.

A single integrated system for recycling used nuclear fuel (UNF) emerging from a reactor has a decladding vessel separating fuel pellets from nuclear fuel rods via oxidation to produce a uranium compound. A fluorination vessel is coupled to the decladding vessel. A fluorinating agent is injected into the fluorination vessel and reacts with the uranium compound to convert the uranium compound to UF.sub.6. An electrowinning vessel is coupled to the fluorination vessel removing plutonium and actinides via electrowinning.

A single integrated system for recycling used nuclear fuel (UNF) emerging from a reactor has a decladding vessel separating fuel pellets from nuclear fuel rods via oxidation to produce a uranium compound. A fluorination vessel is coupled to the decladding vessel. A fluorinating agent is injected into the fluorination vessel and reacts with the uranium compound to convert the uranium compound to UF.sub.6. An electrowinning vessel is coupled to the fluorination vessel removing plutonium and actinides via electrowinning.

A process for recovering a rare earth element. The process includes adding water and a nonaqueous acid to an ionic liquid, and dissolving an oxide of a first rare earth element directly into the ionic liquid to form an ionic solution comprising at least about 0.1 weight percent water, the acid and an ion of the first rare earth element. The process further includes applying a potential to the ionic solution to deposit the first rare earth element onto an electrode as a metal.

A process for recovering a rare earth element. The process includes adding water and a nonaqueous acid to an ionic liquid, and dissolving an oxide of a first rare earth element directly into the ionic liquid to form an ionic solution comprising at least about 0.1 weight percent water, the acid and an ion of the first rare earth element. The process further includes applying a potential to the ionic solution to deposit the first rare earth element onto an electrode as a metal.

The present invention relates to a device for recovering lithium included in a solution such as sea water, and to a sea water lithium-recovery device and a lithium-recovery station using coastal-water-based lithium-adsorption equipment and shore-based lithium-isolation equipment and a lithium desorption device using aeration.

The present invention relates to a device for recovering lithium included in a solution such as sea water, and to a sea water lithium-recovery device and a lithium-recovery station using coastal-water-based lithium-adsorption equipment and shore-based lithium-isolation equipment and a lithium desorption device using aeration.

A method of recovering metals from electronic waste comprises providing a powder comprising electronic waste in at least a first reactor and a second reactor and providing an electrolyte comprising at least ferric ions in an electrochemical cell in fluid communication with the first reactor and the second reactor. The method further includes contacting the powders within the first reactor and the second reactor with the electrolyte to dissolve at least one base metal from each reactor into the electrolyte and reduce at least some of the ferric ions to ferrous ions. The ferrous ions are oxidized at an anode of the electrochemical cell to regenerate the ferric ions. The powder within the second reactor comprises a higher weight percent of the at least one base metal than the powder in the first reactor. Additional methods of recovering metals from electronic waste are also described, as well as an apparatus of recovering metals from electronic waste.