Abstract: Provided is a method for recovering metals, which can produce a lithium hydroxide solution from a metal-containing solution and appropriately process the impurities separated at that time.

Abstract: Provided are a method for removing aluminum which can effectively remove aluminum, and a method for recovering metals. A method for removing aluminum includes: a leaching step of bringing a raw material, the raw material having battery powder, the battery powder being obtained from lithium ion battery waste and comprising at least aluminum and nickel and/or cobalt, into contact with an acidic leaching solution to leach the battery powder to obtain a leached solution containing at least aluminum ions and nickel ions and/or cobalt ions; and a neutralization step of using the leached solution as a metal-containing solution, increasing a pH of the metal-containing solution and separating a neutralized residue to obtain a neutralized solution, wherein a molar ratio of fluorine to aluminum (F/Al molar ratio) of the raw material is 1.

Abstract: Provided are a method for removing aluminum which can effectively remove aluminum, and a method for recovering metals. A method for removing aluminum includes a leaching step of bringing a raw material obtained from lithium ion battery waste, the raw material having battery powder containing at least aluminum and nickel and/or cobalt, into contact with an acidic leaching solution to leach the battery powder to obtain a leached solution, wherein a molar ratio of fluorine to aluminum (F/Al molar ratio) of the raw material is 1.3 or more, and wherein, in the leaching step, the acidic leaching solution contains calcium and fluorine, aluminum is precipitated with calcium and fluorine, and the resulting precipitate is contained in a leached residue.

Abstract: A method for leaching at least one metal in battery powder containing at least copper and one or more of cobalt and nickel, the method including a leaching process repeating multiple times, wherein the leaching process includes: a first leaching step of leaching at least one metal in the battery powder in an acidic leaching solution, terminating the leaching before the copper begins to be dissolved, and removing a leached residue from the resulting leached solution; and a second leaching step of leaching at least one metal in the leached residue of the first leaching step in an acidic leaching solution, and terminating the leaching after the copper begins to be dissolved to obtain a leached solution, wherein the leached solution obtained in the second leaching step of the leaching process is used as an acidic leaching solution in a first leaching step of a leaching process following said leaching process, and wherein a leached residue is removed from a leached solution in a second leaching step of at least on

Abstract: A method for removing aluminum includes: a leaching step of leaching battery powder obtained from lithium ion battery waste, the battery powder containing at least aluminum and at least one of nickel and cobalt, with an acid to obtain a leached solution containing at least aluminum ions and at least one of nickel ions and cobalt ions; and a neutralization step including increasing a pH of the leached solution to remove aluminum ions, wherein, when removing the aluminum ions in the neutralization step, an alkaline pH adjusting agent is added to the leached solution to increase the pH, and when the pH reaches 3.0 to 4.0, iron is added in place of the pH adjusting agent to further increase the pH.

Abstract: A method for bringing battery powder resulting from lithium ion battery waste into contact with an acidic leaching solution 21 inside a leaching vessel 1 to leach metals contained in the battery powder into the acidic leach solution 21, wherein the leaching vessel includes a movable member operably disposed at a position above a liquid surface 22 of the acidic leaching solution 21 stored therein, and the method includes destroying froth Ba generated in the acidic leaching solution 21 by operation of the movable member.

Abstract: A method for processing lithium ion battery scrap includes a leaching step of leaching lithium ion battery scrap and subjecting the resulting leached solution to solid-liquid separation to obtain a first separated solution; an iron removal step of adding an oxidizing agent to the first separated solution and adjusting a pH of the first separated solution in a range of from 3.0 to 4.0, then performing solid-liquid separation and removing iron in the first separated solution to obtain a second separated solution; and an aluminum removal step of neutralizing the second separated solution to a pH range of from 4.0 to 6.0, then performing solid-liquid separation and removing aluminum in the second separated solution to obtain a third separated solution.

Abstract: A method for processing lithium ion battery scrap according to this invention includes a leaching step of leaching lithium ion battery scrap to obtain a leached solution; an aluminum removal step of neutralizing the leached solution to a pH range of from 4.0 to 6.0, then performing solid-liquid separation and removing aluminum in the leached solution to obtain a first separated solution; and an iron removal step of adding an oxidizing agent to the first separated solution and adjusting the pH in a range of from 3.0 to 5.0, then performing solid-liquid separation and removing iron in the first separated solution to obtain a second separated solution.

Abstract: A method for processing lithium ion battery scrap includes a leaching step of leaching lithium ion battery scrap and subjecting the resulting leached solution to solid-liquid separation to obtain a first separated solution; an iron removal step of adding an oxidizing agent to the first separated solution and adjusting a pH of the first separated solution in a range of from 3.0 to 4.0, then performing solid-liquid separation and removing iron in the first separated solution to obtain a second separated solution; and an aluminum removal step of neutralizing the second separated solution to a pH range of from 4.0 to 6.0, then performing solid-liquid separation and removing aluminum in the second separated solution to obtain a third separated solution.

Abstract: A method for processing lithium ion battery scrap according to this invention includes a leaching step of leaching lithium ion battery scrap to obtain a leached solution; an aluminum removal step of neutralizing the leached solution to a pH range of from 4.0 to 6.0, then performing solid-liquid separation and removing aluminum in the leached solution to obtain a first separated solution; and an iron removal step of adding an oxidizing agent to the first separated solution and adjusting the pH in a range of from 3.0 to 5.0, then performing solid-liquid separation and removing iron in the first separated solution to obtain a second separated solution.

Abstract: The impact absorbing structure of the present invention is an impact absorbing structure for absorbing an impact in a case where the impact absorbing structure is subjected to the impact in a predetermined direction. The impact absorbing structure comprises a plurality of impact absorbing members, each of which is a tubular-shaped body whose longitudinal central axis is arranged along the impact direction and capable of absorbing the impact by being compressively collapsed when receiving the impact from the impact direction. At least one of the plurality of impact absorbing members being placed in such a way that a front end of the impact absorbing members is placed at a different position of ends of the other impact absorbing members in the impact direction, and the front end is an end closer to the direction which is forward in the impact direction.

Abstract: It is desired to make a shock absorbing structure small in size. The shock absorbing structure includes a beam-like structural member having a concave section; and a shock absorbing member, one end of which is arranged in the concave section to abut to the structural member and the other end of which is arranged outside the structural member. Even in a case of a dead stroke when the shock absorbing member is bottomed out, the concave section overlaps with the structural member supporting the structure, so that there is no wasteful space.

Abstract: A copper foil for a printed circuit having a roughened layer on a surface of a copper foil by way of copper-cobalt-nickel alloy plating, a cobalt-nickel alloy plated layer formed on the roughened layer, and a zinc-nickel alloy plated layer formed on the cobalt-nickel alloy plated layer, wherein the total amount of the zinc-nickel alloy plated layer is 150 to 500 pg/dm2, the lower limit of the nickel ratio in the alloy layer is 0.16, the upper limit thereof is 0.40, and the nickel content is 50 pg/dm2 or more.

Abstract: Provided is a copper foil for a printed circuit with an electrodeposited ternary-alloy layer composed of copper, cobalt and nickel formed on a surface of the copper foil, wherein the electrodeposited layer comprises dendritic particles grown on the copper foil surface, and the entire surface of the copper foil is covered with particles having an area as seen from above the copper foil surface of 0.1 to 0.5 ?m2 at a density of 1000 particles/10000 ?m2 or less, particles exceeding 0.5 ?m2 at a density of 100 particles/10000 ?m2 or less, and particles less than 0.1 ?m2 as the remainder. Roughening particles formed dendritically in a roughening treatment based on copper-cobalt-nickel alloy plating are inhibited from shedding from the copper foil surface, and the phenomenon known as powder falling and uneven treatment are thereby inhibited.

Abstract: A method for extracting nickel and lithium includes solvent extraction step of using three or more extraction stages to subject a solution containing lithium and nickel to solvent extraction with 2-Ethylhexyl phosphonic acid mono-2-ethylhexyl ester at a pH of 8.0 to 8.5, whereby the nickel and the lithium are co-extracted into a resultant organic phase.

Abstract: A preparation method of lithium carbonate, in recovering valuable resources of a lithium-ion battery, reducing impurities from lithium carbonate, having a pretreatment process, comprising: a first step cleaning an organic phase containing nickel and lithium prepared by a solvent extraction by use of a sulfuric acid solution containing nickel and enriching lithium in the cleaning solution; a second step extracting a residual nickel only by an organic solvent from a post-cleaning solution in which the lithium is enriched; and a third step controlling pH of the post-extraction solution containing the lithium by ammonia water or lithium hydroxide.

Abstract: The impact absorbing structure of the present invention is an impact absorbing structure for absorbing an impact in a case where the impact absorbing structure is subjected to the impact in a predetermined direction. The impact absorbing structure comprises a plurality of impact absorbing members, each of which is a tubular-shaped body whose longitudinal central axis is arranged along the impact direction and capable of absorbing the impact by being compressively collapsed when receiving the impact from the impact direction. At least one of the plurality of impact absorbing members being placed in such a way that a front end of the impact absorbing members is placed at a different position of ends of the other impact absorbing members in the impact direction, and the front end is an end closer to the direction which is forward in the impact direction.

Abstract: It is desired to make a shock absorbing structure small in size. The shock absorbing structure includes a beam-like structural member having a concave section; and a shock absorbing member, one end of which is arranged in the concave section to abut to the structural member and the other end of which is arranged outside the structural member. Even in a case of a dead stroke when the shock absorbing member is bottomed out, the concave section overlaps with the structural member supporting the structure, so that there is no wasteful space.

Abstract: Provided is a copper foil for a printed circuit with an electrodeposited ternary-alloy layer composed of copper, cobalt and nickel formed on a surface of the copper foil, wherein the electrodeposited layer comprises dendritic particles grown on the copper foil surface, and the entire surface of the copper foil is covered with particles having an area as seen from above the copper foil surface of 0.1 to 0.5 ?m2 at a density of 1000 particles/10000 ?m2 or less, particles exceeding 0.5 ?m2 at a density of 100 particles/10000 ?m2 or less, and particles less than 0.1 ?m2 as the remainder. Roughening particles formed dendritically in a roughening treatment based on copper-cobalt-nickel alloy plating are inhibited from shedding from the copper foil surface, and the phenomenon known as powder falling and uneven treatment are thereby inhibited.

Abstract: A method for extracting nickel and lithium includes solvent extraction step of using three or more extraction stages to subject a solution containing lithium and nickel to solvent extraction with 2-Ethylhexyl phosphonic acid mono-2-ethylhexyl ester at a pH of 8.0 to 8.5, whereby the nickel and the lithium are co-extracted into a resultant organic phase.