Abstract: Provided is a method by which it is possible to collect valuable metals from raw material including waste lithium-ion batteries or the like. The present invention is a method which includes: a step for preparing raw material including at least Li, Al, and the valuable metals; a step for obtaining a reduction that includes slag and an alloy containing the valuable metals by subjecting the raw material to a reduction melting treatment; and a slag separation step for collecting the alloy by separating out the slag from the reduction, wherein, in a step for adding a flux containing calcium (Ca) to the raw material and performing reduction and melting thereof, the reduction melting treatment is performed such that the liquidus line temperature of ternary Al2O3—Li2O—CaO slag in a phase diagram is greater than the liquidus line temperature of a ternary Cu—Ni—Co alloy in a phase diagram.

Abstract: A compound represented by the following general formula has excellent light emission characteristics. Ar1 represents a benzene ring, a naphthalene ring, a phenanthrene ring, etc.; D represents 5H-indolo[3,2,1-de]phenazin-5-yl group, etc.; A represents a cyano group, a phenyl group, a pyrimidyl group, a triazyl group, etc.; m is 1 or 2; n is 0 to 2; R1 to R4 each represent H, an aryl group, a cyano group, etc.

Abstract: A compound represented by the following general formula is an excellent light emitting material. R1 to R5 each represent a hydrogen atom, a deuterium atom, or a substituent other than a cyano group, but one or more of R1 to R5 is an aryl group or a pyridyl group, two or more of R1 to R5 are donor groups, and one or more of them are a substituted ring-fused indol-1-yl group (the number of rings constituting the fused ring is 4 or more).

Abstract: Provided is a conductor material having high conductivity. The conductor material according to an embodiment of the present disclosure has a configuration in which a conjugated polymeric compound having an electron donating group containing a heteroatom in a side chain is doped with a dopant containing an anion selected from a nitrogen anion, a boron anion, a phosphorus anion and an antimony anion, and a counter cation. The anion is preferably an anion represented by Formula (1) below: where R1 and R2 are identical or different, and each represent an electron withdrawing group; and R1 and R2 may be bonded to each other to form a ring with an adjacent nitrogen atom.

Abstract: Provided is a method of effectively separating impurities, in particular, iron contained in a raw material to be processed, and recovering valuable metal at a high rate of recovery. Provided is a method of producing valuable metal including cobalt (Co), comprising: a preparation step for preparing a raw material containing at least iron (Fe) and the valuable metal; a fusing step for heating and fusing the raw material into a melt and thereafter making the melt into a fusion containing alloy and slag; and a slag separation step for separating the slag out from the fusion to recover alloy containing the valuable metal. In the preparation step, the mass ratio of Fe/Co in the raw material is controlled to 0.5 or less. In the fusion step, the oxygen partial pressure in the melt generated by heating and fusing the raw material is made to be 10?9.0 atm or less.

Abstract: An organic semiconductor element of the present invention includes: an organic semiconductor film formed from single crystal of an organic semiconductor, and a doped layer formed in a surface of the organic semiconductor film. A strain sensor of the present invention includes: the organic semiconductor element, a pair of electrodes which are electrically connected through the doped layer, and a substrate which is deformable, and which has the organic semiconductor element formed on one surface thereof. A vibration sensor of the present invention includes: the organic semiconductor element, a pair of electrodes which are electrically connected through the doped layer, and a substrate which has flexibility, and which is fixed at one end or both ends thereof, the substrate having the organic semiconductor element formed on the surface of the flexible portion of the substrate.

Abstract: Provided is a method that is for producing, from a raw material containing an oxide including nickel and cobalt, a valuable metal containing said nickel and cobalt, and that enables the degree of reduction of an alloy obtained through a melting process to be adjusted efficiently and properly. The method comprises: a melting step for obtaining a melted product; and a slag separation step for separating a slag from the melted product and recovering an alloy containing the valuable metal. In the melting step, the degree of reduction in the melting process is determined on the basis of the proportion of the amount of cobalt (cobalt recovery rate) in the produced alloy, with respect to the amount of cobalt in the raw material, and, if the degree of reduction is determined to be excessive, the raw material containing an oxide including nickel and cobalt is added as an oxidizer.

Abstract: Provided is a method for recovering a valuable metal from a material including waste lithium ion batteries or the like. The method comprises: a preparation step for preparing a material including at least Li, Al, and a valuable metal; a reduction and melting step for carrying out a reduction and melting process on the material to obtain a reduced product including a slag and an alloy containing a valuable metal; and a slag separation step for separating the slag from the reduced product to recover the alloy. In the preparation step and/or the reduction and melting step, a flux containing Ca is added. In the reduction and melting step, the reduction and melting process is performed such that the mass ratio of aluminum oxide/(aluminum oxide+calcium oxide+lithium oxide), in the generated slag, is set to 0.5-0.65, and the slag heating temperature is set to 1400-1600° ° C.

Abstract: 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.

Abstract: The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries, the method being capable of effectively obtaining a metal which has a reduced phosphorus content. The present invention provides a method for producing a valuable metal from a starting material that contains waste lithium ion batteries containing phosphorus, the method comprising: a melting step in which the starting material is melted, thereby obtaining a melt; and a slag separation step in which slag is separated from the melt and an alloy containing a valuable metal is recovered. According to the present invention, an alloy is recovered, while making it sure that the recovery ratio of cobalt from the starting material is from 95.0% to 99.6%, thereby suppressing the phosphorus content in the alloy to 0.1% by mass or less.

Abstract: Provided is a method for producing valuable metal from raw materials including, for example, waste lithium ion batteries by a pyrometallurgical method, said method making it possible to efficiently separate manganese included in the raw materials from metal into slag without lowering the valuable metal recovery rate. The present invention is a method for producing valuable metal from raw materials comprising: a reduction melting step for subjecting the raw materials to a reduction melting process so as to obtain a reduction product containing slag and molten metal that contains valuable metal; a slag separation step for recovering the molten metal from the reduction product; and an oxidation purification step for adding silicon dioxide (SiO2) as flux to the recovered molten metal and performing an oxidation melting process. In the oxidation purification step, SiO2 is added as the flux such that the SiO2/MnO weight ratio is 0.4-1.0 in the slag.

Abstract: Provided is a conductor material having high conductivity. The conductor material according to an embodiment of the present disclosure has a configuration in which a conjugated polymeric compound having an electron donating group containing a heteroatom in a side chain is doped with a dopant containing an anion selected from a nitrogen anion, a boron anion, a phosphorus anion and an antimony anion, and a counter cation. The anion is preferably an anion represented by Formula (1) below: where R1 and R2 are identical or different, and each represent an electron withdrawing group; and R1 and R2 may be bonded to each other to form a ring with an adjacent nitrogen atom.

Abstract: A method capable of inexpensively recovering valuable metals is provided. The method for recovering a valuable metal includes: a preparation step of preparing a charge containing at least lithium (Li) and a valuable metal; an oxidation and reductive melting step of subjecting the charge to an oxidation treatment and a reductive melting treatment to produce a reduced product containing a molten alloy and a slag, the molten alloy containing the valuable metal; and a slag separation step of separating the slag from the reduced product to recover the molten alloy, in which the mole ratio of lithium (Li) to aluminum (Al) (Li/Al ratio) in the slag is 0.15 or more and less than 0.40, and the mole ratio of calcium (Ca) to aluminum (Al) (Ca/Al) in the slag is 0.15 or more.

Abstract: Provided is a method which allows for strict control of an oxygen partial pressure required for the heating and melting of a raw material, and thereby more efficient recovery of a valuable metal. The method for recovering a valuable metal (Cu, Ni, and Co) includes the steps of: preparing a charge comprising at least phosphorus (P) and a valuable metal as a raw material; heating and melting the raw material to form a molten body and then converting the molten body into a molten product comprising an alloy and a slag; and separating the slag from the molten product to recover the alloy comprising the valuable metal, wherein the heating and melting of the raw material comprises directly measuring an oxygen partial pressure in the molten body using an oxygen analyzer, and regulating the oxygen partial pressure based on the obtained measurement result.

Abstract: Provided are: an alloy powder that can be obtained from a waste lithium ion battery, wherein the alloy powder can be dissolved in an acid solution and enables recovery of metals contained in the alloy powder; and a method for producing the alloy powder. This alloy powder contains Cu and at least one of Ni and Co as constituent components, wherein a portion having a higher concentration of the at least one of Ni and Co than the average concentration in the entire alloy powder is distributed on at least the surface, and the phosphorus grade is less than 0.1% by mass. The method for producing the alloy powder includes a powdering step for powdering a molten alloy using a gas atomization method, the molten alloy containing Cu and at least one of Ni and Co as constituent components and having a phosphorus grade of less than 0.1% by mass.

Abstract: The present invention provides a method which is capable of more strictly controlling the oxygen partial pressure required during the melting of a starting material, thereby being capable of recovering a valuable metal more efficiently. A method for recovering valuable metals (Cu, Ni, Co), said method comprising the following steps: a step for preparing, as a starting material, a charge that contains at least phosphorus (P), manganese (Mn) and valuable metals; a step for heating and melting the starting material into a melt, and subsequently forming the melt into a molten material that contains an alloy and slag; and a step for recovering the alloy that contains valuable metals by separating the slag from the molten material. With respect to this method for recovering valuable metals, the oxygen partial pressure in the melt is directly measured with use of an oxygen analyzer when the starting material is heated and melted.

Abstract: A resin producing method is a method of producing a resin with which an insulating structure formed on an outer peripheral portion of a conductor is impregnated. The resin producing method includes a dispersion liquid mixing step of mixing an epoxy resin and a dispersion liquid in which a nanofiller is dispersed in a reactive diluent that reduces a viscosity of the epoxy resin by reacting with the epoxy resin, and a curing agent mixing step of mixing a composition produced by the dispersion liquid mixing step, with a curing agent that cures the epoxy resin. The epoxy resin includes, for example, an alicyclic epoxy resin.

Abstract: The present invention provides a method which is capable of more strictly controlling the oxygen partial pressure required during the melting of a starting material, thereby being capable of recovering a valuable metal more efficiently. A method for recovering valuable metals (Cu, Ni, Co), said method comprising the following steps: a step for preparing, as a starting material, a charge that contains at least phosphorus (P), iron (Fe) and valuable metals; a step for heating and melting the starting material into a melt, and subsequently forming the melt into a molten material that contains an alloy and slag; and a step for recovering the alloy that contains valuable metals by separating the slag from the molten material. With respect to this method for recovering valuable metals, the oxygen partial pressure in the melt is directly measured with use of an oxygen analyzer when the starting material is heated and melted.

Abstract: A hydrogen production system according to an embodiment includes an evaporator that evaporates seawater to generate water vapor, an electrolytic device that electrolyzes the water vapor supplied from the evaporator to produce hydrogen, and a removal mechanism that is provided between the evaporator and the electrolytic device and removes a seawater component from the water vapor.