Abstract: The present invention pertains to an alloy treatment method for obtaining a solution containing nickel and/or cobalt from alloys containing nickel and/or cobalt and copper, such as waste lithium-ion batteries, the method comprising: a leaching step S1 in which an acid solution is added to the alloys in the presence of a sulfurizing agent to perform a leaching treatment and obtain a leachate and a leaching residue; and a cementation step S2 in which a reducing agent and a sulfurizing agent are added to the resulting leachate to perform a copper-removal treatment for sulfurizing at least copper contained in the leachate and obtain a post-copper removal solution and a copper-removed residue, wherein the copper-removed residue obtained through the copper-removal treatment in the cementation step S2 is repeatedly subjected to the leaching step S1 and subjected to a leaching treatment together with the alloys.

Abstract: To provide a method for producing lithium hydroxide allowing obtaining high purity lithium hydroxide by reducing impurities to a preliminarily determined level in a step before a conversion step by electrodialysis. The method for producing lithium hydroxide includes steps (1) to (5) below: (1) a hydrocarbonating step of blowing carbon dioxide to a slurry of a mixture of water and rough lithium carbonate; (2) a decarbonation step of heating a lithium hydrogen carbonate solution; (3) an acid solution dissolution step of dissolving a purified lithium carbonate in an acid solution; (4) an impurity removal step of removing a part of metal ions from a first lithium containing solution; and (5) a conversion step of converting lithium salt contained in a second lithium containing solution into lithium hydroxide by electrodialysis. This producing method allows reliably removing metals other than lithium, thereby allowing an increased purity of obtained lithium hydroxide.

Abstract: To provide a method for producing lithium hydroxide allowing increasing a purity of an obtained lithium hydroxide. The method for producing lithium hydroxide includes a lithium adsorption step, a lithium elution step, an impurity removal step, and a conversion step. The impurity removal step includes: (3A) a carbonating step of a step of adding a carbonic acid source to a second lithium containing solution to obtain rough lithium carbonate; (3B) a hydrocarbonating step of a step of blowing carbon dioxide to a slurry containing rough lithium carbonate to obtain a lithium hydrogen carbonate solution; (3C) a decarbonation step of a step of heating the lithium hydrogen carbonate solution to obtain purified lithium carbonate; and (3D) an acid solution dissolution step of a step of dissolving the purified lithium carbonate in an acid solution to obtain a third lithium containing solution.

Abstract: The present invention provides a method that is capable of selectively obtaining nickel and/or cobalt from an alloy, which contains copper. A method comprises: a leaching step S1 in which an alloy that contains copper as well as nickel and/or cobalt is subjected to a leaching treatment by means of an acid solution in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and a reduction step S2 in which a reducing agent is added to the thus-obtained leachate so as to reduce the leachate, thereby obtaining a post-reduction solution and a reduction residue. This method is characterized in that the reduction is carried out in the reduction step S2, while controlling the addition amount of the reducing agent so that the redox potential of the leachate is 0 mV or less as determined where a silver/silver chloride electrode is the reference electrode.

Abstract: A method for producing a lithium containing solution includes a neutralization step of obtaining an untreated lithium containing solution by adding alkali to a crude lithium containing solution and an ion-exchange step of obtaining a lithium containing solution in which a predetermined metallic element is reduced compared with an untreated lithium containing solution by using an ion-exchange resin. In the ion-exchange step, the predetermined metallic element is removed by passing the untreated lithium containing solution through a column containing the ion-exchange resin. A portion of the untreated lithium containing solution passing through the column that is a preliminarily determined amount after starting the liquid passing into the column is to be excluded from the lithium containing solution.

Abstract: A method for producing lithium manganese oxide that is a precursor of a lithium adsorbent under atmospheric pressure is provided. The method for producing a precursor of a lithium adsorbent comprises the following steps (1) to (3): (1) A 1st mixing step of mixing a manganese salt and alkali hydroxide, so as to obtain a 1st slurry containing manganese hydroxide; (2) a 2nd mixing step of adding lithium hydroxide to the 1st slurry and then mixing the mixture to obtain a 2nd slurry; and (3) an oxidation step of adding an oxidizing agent to the 2nd slurry, so as to obtain a precursor of a lithium adsorbent. The method for producing a precursor of a lithium adsorbent comprises these steps, so that a precursor of a lithium adsorbent can be produced under atmospheric pressure. Therefore, a precursor of a lithium adsorbent can be produced at a limited cost.

Abstract: Provided is a method for obtaining a solution having a high concentration of nickel and/or cobalt from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium-ion battery. A method for treating an alloy comprises: a leaching step S1 for subjecting an alloy that contains copper as well as nickel and/or cobalt to a leaching treatment by using an acid solution in the presence of a sulfiding agent to obtain a leachate and a leaching residue; and a reduction step S2 for adding a reducing agent to a part of the obtained leachate and performing a reduction treatment to obtain a post-reduction solution and a reduction residue, wherein in the leaching step S1, the leachate that has not been provided in the reduction treatment in the reduction step S2, is repeatedly used as part or all of the acid solution added in the leaching treatment.

Abstract: Provided is a producing method of granulated body for lithium adsorption that allows sufficiently suppressing a manganese elution in an eluting step when producing lithium on a commercial basis. A producing method of granulated body for lithium adsorption includes a kneading step of kneading a powder of a lithium adsorbent precursor and a binder to obtain a kneaded product, a granulating step of granulating the kneaded product to obtain a 1st granulated body, and a sintering step of sintering the 1st granulated body to obtain a 2nd granulated body. The configuration allows a manganese valence contained in the lithium adsorbent precursor to change from 2 to 4, and thus allowing the suppressed manganese elution in the eluting step. Further, in production on a commercial basis, the lithium adsorbent can be used repeatedly. In addition, a manganese concentration in an eluent obtained in the eluting step can be suppressed, thus allowing loads in steps after the eluting step to be reduced.

Abstract: An inspection cable guide mechanism of the present disclosure includes a heat-resistant sheath having flexibility through which a cable is allowed to be inserted and cooling air is allowed to flow toward a tip through a gap between the cable and the heat-resistant sheath, a segment stacked body configured by stacking segments having heat resistance configured to cover the heat-resistant sheath in a centerline direction, and a plurality of wires disposed around the heat-resistant sheath and extending along a centerline, one segment of the segment stacked body is swingable with respect to two segments adjacent to the one segment about swing axes extending in a direction perpendicular to the centerline, the two swing axes becoming centers when the one segment swings with respect to the two segments are perpendicular to each other when viewed in the centerline direction, and one end of each wire is fixed to one of the segments in the segment stacked body.

Abstract: A control device for an inspection device including a long flexible robot that is formed by connecting a plurality of units and bendable at each unit with a desired curvature, and a posture actuator that adjusts a posture of the unit includes a target posture specifying unit that specifies a target posture including positions of representative points of the respective units traveling along a predetermined route, and an operation amount determination unit that determines an operation amount for bringing the unit to the target posture using a learning model with the target posture of the unit as an input and an operation amount of the posture actuator as an output.

Abstract: A shockwave supply device includes: a shockwave generating unit configured to generate a shockwave; a shockwave emitting unit configured to emit the shockwave; a conduit that is bendable and is provided at a part of a flow path of the shockwave from the shockwave generating unit to the shockwave emitting unit; a plurality of outer shell tubes provided outward in a radial direction of the conduit and provided along an axial direction of the conduit; and a coupling portion with which adjacent ones of the outer shell tubes are coupled to be rotatable with respect to each other about a vertical axis.

Abstract: A machining position correcting device is configured to be applied to an electrochemical machining device configured to make an electrolyte flow out of a distal end part of an electrode bar extending along an axis while rotating the electrode bar about the axis to electrochemically machine a material to be machined in a range from the distal end part of the electrode bar. The machining position correcting device includes a position detector configured to detect a rotational position of a feature point of the electrode bar.

Abstract: This inspection tube drive control device is provided with: an inverse analysis unit (83) which performs an analysis to move a flexible tube along a predetermined route within an object being inspected, from a start point to a target point of the route; and a forward analysis unit (84) which, on the basis of analysis results from the inverse analysis unit (83), acquires, as analysis operation amounts, operation amounts for an attitude actuator capable of adjusting the attitude of the tube when the tube is positioned at each position on the route, and an advancing and retreating actuator which causes the tube to advance and retreat.

Abstract: A rotary electric machine includes an armature unit including an annular rotor configured to be rotatable around an axis and a stator disposed on a radially outer side of the annular rotor; an input or output shaft coupled at a first end thereof to an external device and extending along an axial direction of the annular rotor in a central space defined in a central portion of the annular rotor; and a coupling device disposed closer to a second end of the input or output shaft than an end of the annular rotor adjacent to the external device in the axial direction of the annular rotor and connecting the input or output shaft and the annular rotor so as to be able to transmit a torque.

Abstract: A rotary electric machine includes an armature unit including an annular rotor configured to be rotatable around an axis and a stator disposed on a radially outer side of the rotor; an input/output shaft coupled at a first end to an external device and extending along an axial direction of the rotor in a central space formed in a central portion of the rotor; and a coupling device disposed closer to a second end of the input/output shaft than an end of the rotor adjacent to the external device is in the axial direction and connecting the input/output shaft and the rotor so as to be able to transmit a torque.

Abstract: A water-flow power generating apparatus includes a blade, a rotary part, a power generating unit, a nacelle, and a bearing unit. The blade rotates with power of a water flow. The rotary part is connected to the blade and rotates integrally with the blade. The power generating unit is connected to the rotary part and generates electricity with a rotation force of the rotary part. The nacelle covers the power generating unit, forms a boundary between an inner space in which the power generating unit is disposed and an underwater in which the blade is disposed. The bearing unit supports the rotary part. The bearing unit includes a thrust bearing disposed in the inner space and supporting the rotary part from an axial direction of the rotary part, and a journal bearing disposed between the nacelle and the blade and supporting the rotary part from a radial direction.

Abstract: This hydraulic oil tank, which is disposed inside a pod of a power generation system, stores hydraulic oil, wherein the hydraulic oil tank is provided with: a rubber bag for use during oil temperature increases, the rubber bag being attached to a tank wall surface from the inner side, having a first internal space communicated with the exterior through an opening passing through the wall surface, and partitioning the first internal space and the wall surface interior in an elastic manner; and a rubber bag for use during oil temperature decreases, the rubber bag being attached to the wall surface from the outer side, having a second internal space communicated with the wall surface interior through an opening passing through the wall surface, and partitioning the second internal space and the wall surface interior in an elastic manner.

Abstract: The present invention provides a hydraulic drive train including a check valve provided in a return oil passage disposed between a branching position of a first branching oil passage and a branching position of a second branching oil passage, wherein at the time of starting of startup of the hydraulic drive train, the switching valve is closed, the opening degree of the flow rate adjusting valve is set to the initial opening degree, the on-off valve is opened, the boost pump is driven by the drive motor, and the hydraulic oil is supplied to the hydraulic pump, thereby assisting the rotational speed of the vanes by the hydraulic oil.

Abstract: Provided is an underwater floating-type ocean current power generation device whereby cyclical directional vibration of a floating body of the ocean current power generation device, caused by shadow moment, can be suppressed. An underwater floating type ocean current power generation device includes ocean current power generation device main bodies, each including a rotor of a power generator housed in a nacelle, and a structure. The rotor is configured to be driven by a rotary blade protruding outward from the nacelle. A twin drum floating body capable of floating underwater is constituted by the structure and the ocean current power generation device main bodies joined to the left and right of the structure. The underwater floating type ocean current power generation device is moored to an ocean floor by a mooring rope.

Abstract: A water-flow power generating apparatus includes a blade, a rotary part, a power generating unit, a nacelle, and a bearing unit. The blade rotates with power of a water flow. The rotary part is connected to the blade and rotates integrally with the blade. The power generating unit is connected to the rotary part and generates electricity with a rotation force of the rotary part. The nacelle covers the power generating unit, forms a boundary between an inner space in which the power generating unit is disposed and an underwater in which the blade is disposed. The bearing unit supports the rotary part. The bearing unit includes a thrust bearing disposed in the inner space and supporting the rotary part from an axial direction of the rotary part, and a journal bearing disposed between the nacelle and the blade and supporting the rotary part from a radial direction.