JX Metals Corporation

Provided are a raw material discharge device, a method of processing an electronic and electrical device component scrap, and a raw material discharging method of an electronic and electrical device component scrap, which are capable of efficiently discharging the raw material having various shapes, specific gravities and shapes in each fixed amount. A raw material discharge device including: a storage unit 1 which stores a raw material and comprising a discharge port 11 at one end; a discharge unit 2 arranged at a bottom surface 15 of the storage unit 1 , which conveys the raw material toward the discharge port 11 and discharges the raw material to an outside of the storage unit 1 ; an adjustment unit 3 including a plurality of struts 31 extending from above to below the discharge unit 2 and adjusting an amount of the raw material to be discharged by holding a part of the raw material with the struts 31 ; wherein a ratio (d 1 /d 2 ) of a distance (d 1 ) between a strut 31 closest to a side surface 13, 14 of the storage unit 1 and the side surface 13, 14 of the storage unit 1 to a narrowest distance (d 2 ) between the struts 31 in a center portion of the storage unit 1 , and a ratio (H 1 /H 2 ) of a height of the strut 31 closest to the side surface 13, 14 of the storage unit 1 from a floor to a minimum height (H 2 ) of a strut 31 which is other than the strut 31 closest to the side surface of the storage unit 1 from the floor are respectively adjustable so as to prevent clogging of the raw material being discharged to the outside of the storage unit 1.

Provided is a rolled copper foil for a lithium ion battery current collector, which has good adhesion to a negative electrode active material, generates less metal powder during ultrasonic welding, and has a rust prevention property. In the rolled copper foil for a lithium ion battery current collector, a surface of the copper foil has a BTA film, the BTA film has a thickness of 0.6 nm or more and 4.6 nm or less, and the rolled copper foil satisfies the following relationships: 40≤wet tension [mN]/m]+thickness of BTA film [nm]×10≤80; 0.01≤arithmetic average roughness Ra [μm]≤0.25; and wet tension [mN/m]≥35.

The purpose of the present invention is to provide a stannous oxide, which has excellent solubility and resistance to oxidation, from a stannous oxide powder comprising a stannous oxide and inevitable impurities, the stannous oxide powder having a stannous oxide content of 99.99 mass % or more in dry mass, a specific surface area of less than 0.5 m 2 /g, a D50 particle size of 20 to 60 μm, and a half width of the particle size distribution of 5 to 30 μm.

An object of the present invention is to provide a sputtering target suitable for forming a semiconductor film having low carrier concentration and high mobility. Provided is a sputtering target containing zinc (Zn), tin (Sn), gallium (Ga) and oxygen (O), wherein the sputtering target contains Ga in an amount of 0.15 or more and 0.50 or less in terms of a Ga/(Zn+Sn+Ga) atomic ratio, contains Sn in an amount of 0.30 or more and 0.60 or less in terms of a Sn/(Zn+Sn) atomic ratio, and has a volume resistivity of 50 Ω·cm or less.

Provided is a method for producing lithium carbonate from lithium ion battery waste, the lithium ion battery waste including battery positive material components containing Li and at least one metal selected from the group consisting of Co, Ni and Mn, wherein, after subjecting the lithium ion battery waste to a wet process, thereby separating the at least one metal of the battery positive material components from the lithium ion battery waste to obtain crude lithium carbonate, the method includes: a dissolution step of dissolving the crude lithium carbonate in a liquid while feeding a carbon dioxide gas; and a decarbonization step of heating a lithium dissolved solution obtained in the dissolution step to release carbonic acid, and wherein when dissolving the crude lithium carbonate in the liquid in the dissolution step, the liquid is stirred in a reaction vessel using a stirrer, and a ratio of a diameter (d) of a stirring blade of the stirrer to an inner diameter (D) of the reaction vessel (d/D) is from 0.2 to 0.5.

Provided is a stable CdZnTe monocrystalline substrate having a small leakage current even when a high voltage is applied and having a lower variation in resistivity with respect to variations in applied voltage values. A semiconductor wafer comprising a cadmium zinc telluride monocrystal having a zinc concentration of 4.0 at % or more and 6.5 at % or less and a chlorine concentration of 0.1 ppm by mass or more and 5.0 ppm by mass or less, wherein the semiconductor wafer has a resistivity of 1.0×10 7 Ωcm or more and 1.0×10 8 Ωcm or less when a voltage of 900 V is applied, and wherein a ratio (variation ratio) of the resistivity at application of 0 V to the resistivity at application of a voltage of 900 V is 20% or less.

The present invention relates to a method for treating lithium ion battery scrap containing Li, Ni, Co, Mn, Al, Cu and Fe, the method comprising carrying out a calcination step, a crushing step and a sieving step in this order, and after the steps, the method comprising: a leaching step of leaching the lithium ion battery scrap by adding it to an acidic solution to leave at least a part of Cu as a solid; a Fe/Al removal step comprising allowing a leached solution obtained in the leaching step to pass through a Fe removal process for separating and removing Fe by addition of an oxidizing agent and an Al removal process for separating and removing a part of Al by neutralization in any order; an Al/Mn extraction step of extracting and removing a residue of Al and Mn from a separated solution obtained in the Fe/Al removal step by solvent extraction; a Co recovery step of extracting and back-extracting Co from a first extracted solution obtained in the Al/Mn extraction step by solvent extraction and recovering the Co by electrolytic winning; a Ni recovery step of extracting and back-extracting, by solvent extraction, a part of Ni from a second extracted solution obtained by the solvent extraction in the Co recovery step and recovering the Ni by electrolytic winning; a Li concentration step of extracting and back-extracting, by solvent extraction, a residue of Ni and Li from a third extracted solution obtained by the solvent extraction in the Ni recovery step and repeating the operations of the extracting and the back-extracting to concentrate Li; and a Li recovery step of carbonating Li in a Li concentrated solution obtained in the Li concentration step to recover the Li as lithium carbonate.

Providing a method of recovering Cu from copper ore containing Hg. A method for recovering Cu from copper ore, the method comprising: (A) providing copper ore containing Hg with an amount of 0.2 ppm or more; (B) treating the copper ore to leach Cu and Hg with use of solution containing iodide ions and Fe (3+); and (C) treating post-leaching solution with activated carbon to absorb the iodide ions and Hg.

Provided is a method for removing a linear object, a device for removing a linear object, and a method for processing electronic/electrical equipment component waste, which can improve separation efficiency. The method for removing linear objects including: arranging a plurality of filters 3 in a vibrating sieve machine 1 such that the filters 3 are adjacent to each other so as to partially overlap with each other in a feed direction of a raw material, each of the filters 3 comprising a plurality of rods 2 extending at distances in the feed direction of the raw material and a beam portion 21 supporting the plurality of rods 1 at one ends of the plurality of the rods 2 , the other ends of the plurality of the rods 2 being free ends; arranging a guide 6 below a tip of one of the filters 3 located on a most downstream side in the feed direction; feeding the raw material containing at least linear objects and plate-form objects into the vibrating sieve machine 1 ; and sorting the linear objects and the plate-form objects by vibrating the filters 3 , sieving the linear objects to an under-sieve side of the vibrating sieve machine 1 , and capturing lumpy linear objects with the guide.

Provided is a sputtering target, the sputtering target containing 0.05 at % or more of Bi and having a total content of metal oxides of from 10 vol % to 60 vol %, the balance containing at least Co and Pt.