摘要:
The present invention makes it possible to increase ore throughput and improve productivity without causing a poor reaction and a decrease in operation efficiency. A hydrometallurgical plant 10 according to the present invention includes: a leaching facility 11 provided with leaching treatment tanks 11 (n) in a plurality of lines to perform a leaching treatment; a preliminary neutralization facility 12 provided with neutralization treatment tanks in two stages to perform pH adjustment of leach slurry; and a solid-liquid separation facility 13 made up of a single line to perform solid-liquid separation of leach slurry which is pH-adjusted and discharged from the preliminary neutralization facility 12, in which the preliminary neutralization facility 12 is provided with neutralization treatment tanks 12A (n) of a first stage in a plurality of lines so as to correspond to the respective leaching treatment tanks 11 (n) , and is configured such that leach slurries which are pH-adjusted in the neutralization treatment tanks 12A (n) of the first stage are merged in a neutralization treatment tank 12B of a second stage made up of a single line, and merged leach slurry is transported to the solid-liquid separation facility 13.
摘要:
Provided is a method for producing fine nickel powder used as suitable seed crystals for producing nickel powder from a solution containing a nickel ammine sulfate complex. The method for producing nickel powder sequentially comprises: a mixing step of adding, to a solution containing a nickel ammine sulfate complex, an insoluble solid which is insoluble in the solution to form a mixed slurry; a reduction and precipitation step of charging a reaction vessel with the mixed slurry and then blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions contained in the mixed slurry to form nickel precipitate on a surface of the insoluble solid; and a separation step of separating the nickel precipitate on the surface of the insoluble solid from the surface of the insoluble solid to form nickel powder.
摘要:
A heat shielding material for use in an agricultural and horticultural facility according to the present invention includes a heat shielding layer containing a base resin, and a heat shielding filler in the form of microparticles dispersed in the base resin, wherein the heat shielding filler is at least one selected from lanthanum hexaboride and antimony-doped tin oxide. This heat shielding material for use in an agricultural and horticultural facility has a solar radiation transmittance of 10 to 80%, this transmittance being taken as a reference index for evaluating the level of a heat shielding property, a visible light transmittance of 30 to 90%, and a light transmittance of 5 to 80% at a 320 nm wavelength and a light transmittance of 0 to 70% at a 290 nm wavelength, respectively, in an ultraviolet region.
摘要:
Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m 2 /g.
摘要:
In conventional Sn/Sb type brazing filler metals, there are disadvantages that large grains in a β' phase are likely to deposit and that cracks are likely to occur in the elements and the bonded portion, and that voids are formed when the above described special coating is provided on the die bonding plane of the semiconductor element. The brazing filler metal of the present invention comprises 5 to 20 weight % of Sb and 0.01 to 5 weight % of Te, with the balance being Sn and incidental impurities, or a brazing filler metal comprises 5 to 20 weight % of Sb, 0.01 to 5 weight % of Te, 0.001 to 0.5 weight % of P, with the balance being Sn and incidental impurities.
摘要:
Composition for resin-bonded magnets, composed of a magnetic powder and resin binder, the former containing a transition metal element as one of the constituent elements. According to the invention, the binder contains, as the major ingredient, a thermosetting resin containing an organic peroxide and having radical-polymerization reactivity, and is further incorporated with an N-oxyl compound. The subject-matter of the invention extends to a resin-bonded magnet produced by forming said composition by at least one method selected from the group consisting of injection molding, extrusion, injection compression, injection pressing and transfer molding.