Sumitomo Metal Mining Company, Ltd.

Jsr Corporation

Hitachi Medical Corporation

Tokyo University of Science Foundation

Pigeon Corporation

Tokyo University of Science

Hiroshi Kobayashi

Tatsuya Higaki

Satoshi Asano

Keiji Kudo

Hirofumi Shoji

Yoshitomo Ozaki

Kenichi Fujita

Hidemasa Nagai

Itsumi Matsuoka

Norihisa Toki

Yusuke Senba

Hiroshi Takenouchi

Osamu Nakai

Toshirou Tan

Shin-ya Matsumoto

Hirofumi Shouji

Kazunori Kataoka

Yukio Nagasaki

Yutaka Sato

Hiroyuki Mitsui

Hideki Ohara

Masaki Imamura

Masatoshi Takano

Hiroki Nakayama

Tadahito Takahashi

Kenji Fukuda

Miki Kato

Hiroto Watanabe

Tomoko Jomura

Yoshinori Katsuyama

Masami Nakamae

Fumiko Aboshi

Keita Suzuki

Junichi Takahashi

Hiroyuki Kobayashi

Takeshi Chonan

Hirofumi Tsunematsu

Takayuki Nakai

Keisuke Shibayama

Taisuke Matsushita

Hidetoshi Yamabe

Takuya Hashimoto

Masaaki Muromachi

Kennichi Fujita

Kenji Takeda

Atsushi Idegami

Kazuaki Hiramatsu

Zenichi Onuki

Aki Ishimaru

Naoyuki Tsuchida

Hirotaka Kawasaki

Makoto Konami

Eiji Ishowata

Kouhei Yamamoto

Hiroshi Kawamura

Yukinari Awano

Katsumi Mizuno

Kyoko Miyauchi

Akitaka Uchimura

Shota Sanjo

Ryoma Yamaguma

Shin-Ya Matsumoto

Chonan Takeshi

A method of manufacturing a cobalt-nickel-containing solution including: preparing a crude nickel hydroxide and/or a crude cobalt hydroxide as a starting material, the crude nickel or cobalt hydroxide containing cobalt and nickel and elements except the cobalt and nickel as impurities, the crude nickel hydroxide containing the nickel more than the cobalt, and the crude cobalt hydroxide containing the cobalt more than the nickel; a water-washing process for obtaining a post-water-washing crude hydroxide from the starting material; a leaching process for obtaining a post-leaching solution from the post-water-washing crude hydroxide; a neutralization process of subjecting the post-leaching solution to neutralization and solid-liquid-separation to remove the impurities as a post-neutralization residue containing one or more of iron, silicon, aluminum, and chromium, thereby obtaining a post-neutralization solution; and an extraction process of subjecting the post-neutralization solution to solvent extraction to obtain a post-extraction solution containing cobalt and nickel with the impurities reduced.

Method for manufacturing nickel and cobalt-containing solution from hydroxide containing nickel and cobalt

Provided are a near-infrared absorbing material fine particle dispersion, a near-infrared absorber, and a laminated structure for near-infrared absorption, which can exhibit higher near-infrared absorption property, compared to near-infrared fine particle dispersions, near-infrared absorber, and laminated structures for near-infrared absorption, containing tungsten oxides or composite tungsten oxides according to the conventional art. Also provided is a near-infrared absorbing material fine particle dispersion, wherein composite tungsten oxide fine particles, each particle containing a hexagonal crystal structure, and a silane compound are contained in an acrylic resin.

Near-infrared absorbing material fine particle dispersion body, near-infrared absorbing body, near-infrared absorbing substance laminated body and combined structure for near infrared absorption

Provided is a method for separating copper from nickel and cobalt with which it is possible to selectively and efficiently separate copper, as well as nickel and cobalt, from an alloy including copper, nickel, and cobalt such as an alloy having high corrosion resistance that includes copper, nickel, and cobalt obtained by dry treatment of waste lithium ion cells. An alloy including copper, nickel, and cobalt is brought into contact with sulfuric acid in the joint presence of a sulfurizing agent, and a solid containing copper and a leachate containing nickel and cobalt are obtained.

Method for separating copper from nickel and cobalt

Provided is a method for separating copper from nickel and cobalt, which is capable of efficiently and selectively separating copper, and nickel and cobalt from an alloy containing copper, nickel and cobalt such as a highly anticorrosive alloy that is obtained by subjecting a waste lithium ion battery to a dry treatment and contains copper, nickel and cobalt. According to the present invention, an alloy containing copper, nickel and cobalt is brought into contact with an acid in the coexistence of a sulfurization agent, thereby obtaining a solid that contains copper and a leachate that contains nickel and cobalt.

A near-infrared shielding ultrafine particle dispersion body, and others, having excellent near-infrared shielding function, low haze value and excellent design, with suppressed change in color tone during outdoor use and blue haze phenomenon, using near-infrared shielding ultrafine particles transparent in visible light range, having excellent near-infrared shielding properties, and produced with high productivity, and a near-infrared shielding ultrafine particle dispersion body in which ultra-fine particles having near-infrared shielding properties are dispersed in solid medium, wherein the ultrafine particles are composite tungsten oxide ultrafine particles represented by general formula MxWyOz, and have XRD peak top intensity ratio value of 0.13 or more based on XRD peak intensity ratio value of 1 on plane of silicon powder standard sample, and solid medium contains resin binder and weather resistance improver, and weather resistance improver includes at least one selected from benzotriazole-based UV absorber, triazine-based UV absorber, and benzophenone-based UV absorber.

Near-infrared shielding ultrafine particle dispersion body, near-infrared shielding intermediate film, near-infrared shielding laminated structure, and method for producing near-infrared shielding ultrafine particle dispersion body

A method for manufacturing a sulfuric acid solution includes supplying a chloride ion-containing sulfuric acid solution as an initial electrolyte in an electrolyzer inside of which is divided into an anode chamber and a cathode chamber by a diaphragm; and subsequently taking out a metal dissolved electrolyte in which a metal constituting the anode is dissolved from the anode chamber while supplying a current to an anode and a cathode disposed in the electrolyzer.

Method for manufacturing sulfuric acid solution and electrolyzer used thereof

Provided is a method for separating copper from nickel and cobalt, which can efficiently and selectively separate copper from nickel and cobalt in a substance containing copper, nickel, and cobalt in a waste lithium ion battery, etc. In this method, a substance containing copper, nickel, and cobalt is sulfurated to obtain a sulfide, the obtained sulfide that contains copper, nickel, and cobalt is brought into contact with an acid solution to obtain a solid containing copper and a leachate containing nickel and cobalt. The sulfide preferably contains copper sulfide as a main component, and contains nickel metal and cobalt metal. In-addition, when bringing the sulfide into contact with the acid solution, the added amounts of the sulfide and the acid solution are preferably adjusted such that the oxidation-reduction potential of the obtained leachate is maintained at 150 mV or less where a silver/silver chloride electrode is a reference electrode.

Method for separating copper, and nickel and cobalt

A near-infrared absorbing material fine particle dispersion, a near-infrared absorber laminate, and a laminated structure for near-infrared absorption can exhibit higher near-infrared absorption property, compared to near-infrared fine particle dispersions, near-infrared absorber laminates, and laminated structures for near-infrared absorption, containing tungsten oxides or composite tungsten oxides according to the conventional art. Also, a near-infrared absorbing material fine particle dispersion in which composite tungsten oxide fine particles, each particle containing a hexagonal crystal structure, and a polymer compound with maleic anhydride introduced therein are contained in the polypropylene resin, and the near-infrared absorber laminate and the laminated structure for near-infrared absorption using the dispersion.

Near-infrared absorbing material fine particle dispersion, near-infrared absorber, near-infrared absorber laminate, and laminated structure for near-infrared absorption

Provided is a treatment method whereby it becomes possible to recovery copper, nickel and cobalt, which are valuable metals, contained in a lithium ion battery waste and to separate copper, nickel and cobalt from one another effectively. A method for treating a lithium ion battery waste according to the present invention includes: an alloy production step S1 of introducing the lithium ion battery waste into a furnace and then melting the lithium ion battery waste by heating, thereby producing an alloy containing copper, nickel and cobalt; and an electrolytic purification step S2 of subjecting the alloy to such an electrolytic treatment that the alloy is charged as an anode into a sulfuric acid solution and then electricity is conducted between the anode and a cathode to electrodeposit copper contained in the alloy onto the cathode, thereby separating nickel and cobalt from each other.

Method for treating lithium ion battery waste

Provided is a method for obtaining high-purity scandium oxide efficiently from a solution containing scandium. The method for producing high-purity scandium oxide of the present invention has a first firing step Sfor subjecting a solution containing scandium to oxalation treatment using oxalic acid and firing the obtained crystals of scandium oxalate at a temperature of 400 to 600&#xb0; C., inclusive, a dissolution step Sfor dissolving the scandium compound obtained by firing in one or more solutions selected from hydrochloric acid and nitric acid to obtain a solution, a reprecipitation step Sfor subjecting the solution to oxalation treatment using oxalic acid and generating a reprecipitate of scandium oxalate, and a second firing step Sfor firing the reprecipitate of obtained scandium oxalate to obtain scandium oxide.

Method for producing high-purity scandium oxide

To provide a heat-ray shielding film mainly composed of polyvinyl acetal resin and a method for manufacturing the same capable of exhibiting excellent optical characteristics and high weather resistance by using composite tungsten oxide fine particles having a high heat-ray shielding effect, and a heat-ray shielding laminated transparent base material using the heat-ray shielding film, the heat-ray shielding film containing fine particles having a heat-ray shielding function, polyvinyl acetal resin, and a plasticizer, wherein the fine particles having the heat-ray shielding function is expressed by a general formula MyWOz (wherein N is one kind or more elements selected from a group consisting of Cs, Rb, K, Tl, In, Ba, Li, Sr, Fe, Sn, Al, and Cu, satisfying 0.1&#x2264;y&#x2264;0.5, 2.2&#x2264;z&#x2264;3.0), which are composite tungsten oxide fine particles having a hexagonal crystal structure, the heat-ray shielding film further containing metal carboxylate.

Heat-ray shielding film and method for manufacturing the same, and heat-ray shielding laminated transparent base material

The present invention provides a method for easy and efficient recovery of high purity scandium from nickel oxide ore, the method comprising: an adsorption step for passing a scandium-containing solution through an ion exchange resin to adsorb scandium on the ion exchange resin; an elution step for eluting scandium from the ion exchange resin to obtain a post-elution solution; an impurity extraction step in which after the elution step, the scandium-containing solution is subjected to a first solvent extraction using an amine-based impurity extractant and is separated into a first aqueous phase containing scandium and into a first organic phase containing impurities; and a scandium extraction step in which the first aqueous phase is subjected to a second solvent extraction using an amide derivative-containing scandium extractant to obtain a second organic phase containing scandium.

Method for recovering scandium

In separating scandium and thorium from a leachate obtained by adding sulfuric acid to a nickel oxide ore containing scandium and thorium, scandium is recovered from only one system. The method according to the invention comprises: an extraction step Sfor treating a nickel oxide ore containing scandium and thorium with sulfuric acid to give an acidic solution (a feed solution for extraction), and then solvent-extracting the feed solution with the use of a scandium extractant containing an amide derivative to thereby divide the feed solution into an organic extract (a first organic phase) containing scandium and thorium and a liquid extract (a first aqueous phase) containing impurities; and a washing step Sfor adding sulfuric acid to the organic extract (the first organic phase) and thus dividing the same into washed organic matters (a second organic phase) containing thorium and a washed liquid (a second aqueous phase) containing scandium.

Scandium purification method

A polycarbonate resin composition capable of suppressing the deterioration of the weather resistance of the infrared shielding material fine particles, including: a composite tungsten oxide fine particle (A), a weather resistance improver (B), and a polycarbonate resin (C), wherein (A) is expressed by a general formula MxWOy, and (B) is any one of those containing a phosphite compound (B1), or containing the phosphite compound and one or more kinds selected from a hindered phenol-based stabilizer, phosphoric acid-based stabilizer and sulfur-based stabilizer (B2), or containing a hindered phenol-based stabilizer and one or more kinds selected from a phosphoric acid-based stabilizer and sulfur-based stabilizer (B3), and an addition amount of (B) is 0.1 parts by weight or more and 20 parts by weight or less, based on 1 parts by weight of (A), and provides a heat ray shielding molded body and a heat ray shielding lamination body produced using the composition.

Polycarbonate resin composition, heat ray shielding molded body and heat ray shielding lamination body

Provided is a method for producing solutions, by which two solutions, namely a high-purity nickel sulfate solution and a mixed solution of nickel sulfate and cobalt sulfate are able to be obtained at the same time from a sulfuric acid solution containing nickel, cobalt and calcium. A method for producing solutions according to the present invention uses a sulfuric acid solution containing nickel, cobalt and calcium and performs a first step Sfor producing a mixed solution of nickel sulfate and cobalt sulfate from the sulfuric acid solution and a second step Sfor producing a solution of nickel sulfate from the sulfuric acid solution in parallel. In the first step, the sulfuric acid solution is subjected to solvent extraction by an extractant, thereby obtaining a first organic solvent after extraction. In the second step, the sulfuric acid solution is subjected to solvent extraction by means of an extractant.

Method for producing solutions containing nickel or cobalt

Growing community of inventors

Niihama, Japan

Hiroshi Kobayashi