The invention provides a method by which a valuable metal is recovered, in particular iron. A method for producing a valuable metal containing cobalt (Co), the method comprising: a preparation step in which a starting material that contains at least iron (Fe) and a valuable metal is prepared; a melting step in which a melt is obtained by heating and melting the starting material, and the melt is subsequently formed into a molten material that contains an alloy and slag; and a slag separation step in which the slag is separated from the molten material, thereby recovering the alloy containing the valuable metal. In the preparation step, the Fe/Co mass ratio in the starting material is controlled to 0.5 or less; and in the melting step, the Co content in the slag that is obtained by heating and melting the starting material is set to 1% by mass or less.

Provided is a method for recovering valuable metals that makes it possible to efficiently recover valuable metals at a high recovery rate. The present invention is a method for recovering the valuable metal from a raw material that contains the valuable metal. This method comprises: a preparation step for preparing a raw material; a melting step for introducing the raw material into a melting furnace and heating and melting the raw material to yield an alloy and a slag; and a slag separation step for separating the slag and recovering a valuable metal-containing alloy. The redox degree is adjusted in the melting step by introducing, as a reducing agent, scrap of a wound body, the wound body being an electrode assembly in which a positive electrode and a negative electrode are wound insulated from each other by a separator and carbon is used in the negative electrode.

The invention is a method for producing valuable metals from raw material containing valuable metals including Cu, Ni and Co. The method includes at least: a preparation step for preparing raw material containing Li, Al, and valuable metals; a reduction melting step; and a slag separation step for separating the slag from the reduced product to collect the alloy. One or both of the preparation step and the reduction melting step include adding Ca-containing flux to the raw material. In the reduction melting step, while the furnace walls of the melting furnace are cooled with the cooling means, a solid slag layer having a Ca/Al value smaller than the Ca/Al value of the slag or a solid slag layer containing 15 mass % or more Al and 3 mass % or more Li is formed on the inside surface of the melting furnace.

The present disclosure relates to a device and method for recovering arsenic and gallium. A closed furnace body is in communication with a vacuuming pipe, and the vacuuming pipe is connected to a vacuuming mechanism. The closed furnace body includes a first furnace body, a second furnace body and a third furnace body. A first heating mechanism and a graphite crucible are arranged inside the first furnace body, the first heating mechanism being used for heating the graphite crucible. A first collection cylinder is in communication with a second collection cylinder. The device for recovering arsenic and gallium of the present disclosure is arranged with a structure for realizing directional condensation of gallium arsenide clusters and arsenic vapor, respectively, to realize high-purity recovery of arsenic and gallium.

The present invention provides an apparatus for separating and recycling metal elements in cathode materials of lithium batteries, comprising a device for pretreating lithium batteries, configured to obtain a mixture of powders containing positive-electrode materials; a device of acid leaching, configured to obtain leachate; if the to-be-recycled lithium battery contain a lithium iron phosphate battery, the apparatus further comprises a heating furnace for heating the solid products, obtained after acid leaching and solid-liquid filtration, in an oxygen-containing atmosphere; if the to-be-recycled lithium battery contains a ternary lithium battery, the apparatus further comprises a first extraction device for performing extraction on the leachate, wherein diisooctyl phosphate is extraction agent.

The present disclosure concerns a 2-step smelting process, for recovering of Ni and Co from batteries and other sources. The process comprises the steps of: defining an oxidizing level Ox, and a battery-bearing metallurgical charge; oxidizing smelting of the metallurgical charge by injecting an O.sub.2-bearing gas into the melt to reach the defined oxidizing level Ox; and, reducing smelting of the obtained slag using a heat source and a reducing agent. The process is more energy-efficient than a single-step reducing smelting process and provides for a higher purity alloy and for a cleaner final slag.

A method for recycling a scrap material includes providing a sample having one or more components having a respective melting temperature, and heating the sample to a first melting point corresponding to a first component to form a molten first component, and separating the molten first component from the sample. A system for recycling scrap materials includes a housing component for a sample containing one or more components to be heated, and subsequently melted and separated. The system may include a microwave plasma source, and at least one collection mechanism corresponding to each separated molten component.

The present invention lies in the field of pyrometallurgy and discloses a process and a slag suitable for the recovery of Ni and Co from Li-ion batteries or their waste. The slag composition is defined according to:
10%<MnO<40%;
(CaO+1.5*Li.sub.2O)/Al.sub.2O.sub.3>0.3;
CaO+0.8*MnO+0.8*Li.sub.2O<60%;
(CaO+2*Li.sub.2O+0.4*MnO)/SiO.sub.22.0;
Li.sub.2O1%; and,
Al.sub.2O.sub.3+SiO.sub.2+CaO+Li.sub.2O+MnO+FeO+MgO>85%. This composition is particularly adapted to limit or avoid the corrosion of furnaces lined with magnesia-bearing refractory bricks.

The present invention lies in the field of pyrometallurgy and discloses a process and a slag suitable for the recovery of Ni and Co from Li-ion batteries or their waste, particularly from Black Mass. The slag composition is defined according to: 25%<MnO<70%; Al.sub.2O.sub.3+0.5 MnO<45% SiO.sub.2>5%; Li.sub.2O>1%; MnO+Li.sub.2O+Al.sub.2O.sub.3+CaO+SiO.sub.2+FeO+MgO+P.sub.2O.sub.5>90%; and, wherein (CaO+2 Li.sub.2O+0.4 MnO)/SiO.sub.22.0. This composition is particularly adapted to limit or avoid the wear or corrosion of furnaces lined with magnesia-bearing refractory bricks.

A method for recycling a scrap material includes providing a sample having one or more components having a respective melting temperature, and heating the sample to a first melting point corresponding to a first component to form a molten first component, and separating the molten first component from the sample. A system for recycling scrap materials includes a housing component for a sample containing one or more components to be heated, and subsequently melted and separated. The system may include a microwave plasma source, and at least one collection mechanism corresponding to each separated molten component.