A method for the extraction of lithium from an assembly of at least one cell of an electric battery including solid metallic lithium, such as a Lithium-Metal-Polymer battery, the method having an extraction phase including the following steps: positioning the assembly in an orientation in which a first edge of the assembly from which extend(s) one or more negative electrode or electrodes is located below a second edge of the assembly, opposite the first edge, and from which extend(s) one or more positive electrode or electrodes; and heating the assembly to a treatment temperature greater than or equal to the melting temperature of the solid metallic lithium. An installation implementing such a method is also provided.

A method for recycling waste lithium iron phosphate is by selective oxidation-reduction, to obtain recycled lithium iron phosphate, and a lithium ion battery. The method includes: primarily sintering waste lithium iron phosphate under a condition where a mild oxidizing gas is introduced; separating a lithium iron phosphate powder material; supplementing lithium and supplementing carbon to the lithium iron phosphate powder material and regulating the composition of the lithium iron phosphate powder material using a lithium source and a carbon source by secondary sintering to obtain recycled lithium iron phosphate, wherein the mild oxidizing gas is water vapor, CO2 gas, or a mixed gas thereof.

The invention relates to a process for processing hard metal, in particular hard metal scrap, wherein the hard metal is alloyed with a low-melting alloy metal in a reaction space of a reactor (10) with a heat supply, wherein the alloy metal is converted into a vapor phase in the presence of inert gas, and wherein the alloy metal is subsequently at least partially condensed in a condensation step, and wherein an overpressure relative to ambient pressure is present in the reaction space at least during the condensation phase. According to the invention, provision is made in particular for the inert gas to be permanently supplied to the reaction chamber at least temporarily during the condensation phase from an inert gas source (60) disposed outside of the reaction chamber via an inert gas supply line (61), and for the inert gas to be discharged from of the condenser (30) into the environment at least at certain intervals during the condensation phase. In this way, the equipment required can be significantly reduced compared to prior art hard metal chemical extraction processes.

Provided is a more efficient dry refining process for improving the recovery rate of phosphorus-free valuable metals from waste lithium ion batteries. The present invention provides a method for recovering valuable metals from waste lithium ion batteries, said method comprises a melting step S4 for melting the waste lithium ion batteries and obtaining a molten substance and a slag separation step S5 for separating slag from the molten substance and recovering an alloy containing valuable metals, wherein in the melting step, flux containing a calcium compound is added to the waste lithium ion batteries such that the mass ratio between silicon dioxide and calcium oxide in the slag becomes 0.50 or less and the mass ratio between calcium oxide and aluminum oxide falls in the range of 0.30 to 2.00.

The present invention provides a method for treating at least one lithium ion battery enclosed in a housing containing aluminum, comprising heating the lithium ion battery using a combustion furnace in which a combustion object is incinerated by flames, while preventing the flames from being directly applied to the housing of the lithium ion battery.

A method for recovering gold, silver, and/or platinum from components of a fuel cell stack of a fuel cell or electrolyzer includes treating the components with an aqueous electrolyte solution and with at least one gaseous oxidant in the fuel cell or the electrolyzer in an oxidation step. In a reduction step, the components are treated with a flow of an aqueous electrolyte solution and with at least one gaseous reductant in the fuel cell or the electrolyzer. A device by which the method can be carried out has a reservoir for the electrolyte solution, a line connected to an outlet opening of the reservoir, the line having a pump, an anode inlet connection connected to an anode inlet, and a cathode inlet connection connected to a cathode inlet. An oxidant-introducer introduces a gaseous oxidant into the line. A reductant-introducer introduces a gaseous reductant and/or inert gas into the line.

A method for obtaining a brass billet with reduced lead content involves machining a finished or semi-finished product made of traditional brass by chip removal to obtain traditional brass chips, performing a fragmentation treatment on the traditional brass chips to obtain traditional brass fragments, performing a lead removal treatment on the traditional brass fragments to obtain brass fragments with reduced lead content, melting in a furnace a charge comprising the brass fragments with reduced lead content, and obtaining a billet by direct or inverted extrusion of the molten product.

A recycling process that facilitates separation of materials from metallic substrates by cryogenically cooling the recyclable items to induce embrittlement of the metals. Embrittled metals may be shattered more efficiently and with a higher yield of materials bound to the metallic substrates. Metal embrittlement may be induced by mixing the source stream with liquid nitrogen, and cooling the stream to approximately minus 200° F. Multiple recovery stages may be employed to maximize the yield of the target materials. Embodiments may enable recovery of platinum group metals (PGMs) from catalytic converters with metallic foil substrates. Yield of PGMs may be enhanced by employing a primary recovery stage and a secondary recovery stage, by cryogenically cooling input materials for each stage, by mixing the pulverized material in secondary recovery with an aqueous solution to dissipate attractive charges, and by wet screening the pulverized material slurry to obtain the PGM particles.

A separating and melting system and method for a waste lead grid in waste lead acid storage battery recycling is provided. A drying drum is mounted on an upper end of a smelting apparatus, a dust remover is connected to an upper end of the drying drum by a flue gas duct, a lead grid turnover box is connected to the upper end of the drying drum, and a lead-containing liquid agitator passes through the drying drum into the smelting apparatus; a spiral feeder is mounted on the smelting apparatus and located in the drying drum, one end of a lead grid barrier plate is placed on the spiral feeder, and the other end of the lead grid barrier plate is placed on an inner wall of the drying drum; an automatic ash acquiring machine is mounted on the smelting apparatus.

The invention relates to a method for treating used lithium batteries (10) containing the steps: comminuting the batteries (10) such that comminuted material (24) is obtained, and (b) inactivating of the comminuted material (24) such that an inactive comminuted material (42) is obtained. According to the invention, the drying is conducted at a maximum pressure of 300 hPa and a maximum temperature of 80° C. and the deactivated comminuted material (42) is not filled into a transport container and/or said deactivated comminuted material is immediately further processed after the drying process.