Abstract: A reagent includes a coloring agent allowing a measured solution to develop a color transmitting a region component light for a dissolved-substance concentration measurement selected from three region component lights of red, green, and blue obtained by transmitting a light including a visible light region to the measured solution colored by addition of the reagent to the sample, and dividing a light of the visible light region of a transmitted light thereof into roughly three portions. Based on the transmitted light from the measured solution with the coloring agent added, an absorbance of the region component light for the dissolved-substance concentration measurement, and an absorbance A3 of another region component light resulted only from the coloring agent are calculated. Whether or not the reagent in a necessary quantity is added to the sample can be judged by comparing the absorbance A3 and a standard absorbance A0.

Abstract: Provided is a smelting method whereby a reaction for reducing pellets, said pellet being formed by using a saprolite ore as a starting material, can be effectively conducted and thus an iron/nickel alloy having a nickel grade of, for example, 16% or greater can be obtained. The method comprises: a pellet production step (S1) for producing the pellets from the saprolite ore; and a reduction step (S2) for heating and reducing the obtained pellets in a smelting furnace. In the pellet production step (S1), at least the saprolite ore and a preset amount of a carbonaceous reducing agent are mixed together to produce the pellets. In the reduction step (S2), a hearth carbonaceous reducing agent is preliminarily spread on the hearth of the smelting furnace and the pellets produced above are placed on the hearth carbonaceous reducing agent and then subjected to a heat reduction treatment.

Abstract: Provided is a smelting method capable of effectively promoting a reduction reaction on pellets formed using nickel oxide ore as starting material to obtain a ferronickel alloy with a high nickel grade of at least 4%. The present invention is a method for smelting nickel oxide ore wherein ferronickel alloy with a nickel grade of at least 4%, the method comprising a pellet-producing step S1 for producing pellets from nickel oxide ore, and a reducing step S2 for reduction-heating of the obtained pellets in a smelting furnace. In the pellet-producing step S1, the pellets are produced by mixing nickel oxide ore with a specified amount of a carbonaceous reducing agent as starting materials. In the reducing step S2, the produced pellets are charged in a smelting furnace in which a carbonaceous reducing agent (furnace bottom carbonaceous reducing agent) has been spread over the entire furnace bottom and reduction-heating is performed.

Abstract: A cover material for a vehicle seat provides favorable touch while utilizing the texture of a leather material. A cover material for a vehicle seat includes: a leather portion made of natural leather or artificial leather; and a mesh fabric portion bonded to the back side of the leather portion.

Abstract: A smelting method capable of obtaining an iron-nickel alloy having a high nickel grade of 4% or higher by effectively facilitating a reduction reaction of pellets formed using a nickel oxide ore as a raw material. The present invention is a method for smelting a nickel oxide ore, by which an iron-nickel alloy is obtained by forming pellets from a nickel oxide ore and reducing and heating the pellets. In the pellet production step S1, a mixture is obtained by mixing raw materials that contain at least a nickel oxide ore and a carbonaceous reducing agent. In the reduction step S2, a furnace floor carbonaceous reducing agent is laid on the floor of the smelting furnace in advance when placing the obtained pellets in the smelting furnace and the pellets are placed on the furnace floor carbonaceous reducing agent and then reduced and heated.

Abstract: Provided is a motorcycle tire having improved wet performance during straight running without compromising other performances. The motorcycle tire is a motorcycle tire whose rotation direction when mounted on a vehicle is designated.

Abstract: There is provided a lens barrel capable of suppressing deformation of a rear frame upon application of a radial inward force to the rear frame. The lens barrel is a lens barrel attachable to a camera body. The lens barrel includes a lens mount mechanically or electrically connected to the camera body, a fixed frame fixed to the lens mount, and a rear frame that covers an outer periphery of the fixed frame. The rear frame has a tubular portion and flanges that extend from a front end and a rear end of the tubular portion radially inward, and at least a part of a radial inner end of the flange is brought into contact with the fixed frame.

Abstract: A method for smelting a nickel oxide ore, wherein the reduction step progresses effectively while maintaining the strength of the pellets, comprises: a pellet production step S1 for producing pellets from a nickel oxide ore; and a reduction step S2 for reducing and heating the obtained pellets in a smelting furnace at a predetermined reduction temperature. In the pellet production step S1, a mixture is formed by mixing materials including said nickel oxide ore without mixing a carbonaceous reducing agent, and the pellets are formed by agglomerating said mixture. In the reduction step S2, in charging the obtained pellets into the smelting furnace, a carbonaceous reducing agent is spread in advance over the furnace floor of the smelting furnace and the pellets are placed on the carbonaceous reducing agent, and the pellets are reduced and heated in a state where the pellets are covered by the carbonaceous reducing agent.

Abstract: Provided is a method for producing pellets by which, when nickel oxide ore is being pelletized and smelted to produce ferronickel, which is an iron-nickel alloy, it is possible to allow the smelting reaction to proceed effectively. A method for producing pellets according to the present invention is for producing pellets which are used in producing iron-nickel alloy and which are produced by mixing raw materials including nickel oxide ore and agglomerating the resulting mixture, wherein the method comprises: a mixing step S11 for mixing at least nickel oxide ore, a carbonaceous reducing agent, and iron oxide to generate a mixture; and a pellet formation step S12 for agglomerating the resulting mixture and forming pellets. In the mixing step S11, the mixture is generated such that the total weight of nickel and iron accounts for 30 wt % or more of the total weight of the pellets formed.

Abstract: A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore and is characterized by comprising: a pellet production step S1 for producing pellets from nickel oxide ore; a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace to obtain a mixture of iron-nickel alloy and slag; and a separation step S3 for separating out and recovering the iron-nickel alloy form the resulting mixture, the separation step S3 comprising the creation of pulverized matter by pulverizing the mixture so that at least the slag becomes smaller than 2 mm, and sorting the resulting pulverized matter with a magnetic force of 300 to 600 gauss.

Abstract: Provided is a method for smelting nickel oxide ore by which the occurrence of cracking due to heat shock can be suppressed when nickel oxide ore is pelletized and charged into a smelting step (reduction step). A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore, the method being characterized by comprising a pellet production step S1 for producing pellets from nickel oxide ore, and a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace, the reduction step S2 comprising preheating the pellets obtained in the pellet production step S1 to a temperature of 350 to 600° C. in the reduction furnace and thereafter charging the pellets into the reduction furnace and raising the temperature of the reduction furnace to the reduction temperature.

Abstract: A method for smelting a nickel oxide ore, wherein the reduction step progresses effectively while maintaining the strength of the pellets, comprises: a pellet production step S1 for producing pellets from a nickel oxide ore; and a reduction step S2 for reducing and heating the obtained pellets in a smelting furnace at a predetermined reduction temperature. In the pellet production step S1, a mixture is formed by mixing materials including said nickel oxide ore without mixing a carbonaceous reducing agent, and the pellets are formed by agglomerating said mixture. In the reduction step S2, in charging the obtained pellets into the smelting furnace, a carbonaceous reducing agent is spread in advance over the furnace floor of the smelting furnace and the pellets are placed on the carbonaceous reducing agent, and the pellets are reduced and heated in a state where the pellets are covered by the carbonaceous reducing agent.

Abstract: Provided is a production method for producing pellets that are used for producing an iron-nickel alloy and that are produced by mixing at least a nickel oxide ore, a carbonaceous reducing agent, and an iron oxide and agglomerating the obtained mixtures, the method comprising: a step S11 for producing at least two types of mixtures having different mixing ratios of said nickel oxide ore, said carbonaceous reducing agent, and said iron oxide; and a step S12 for forming pellets, which are agglomerates having a layered structure, by using said two or more types of mixtures such that the mixture with the highest content ratio of said iron oxide, among said two or more types of mixtures that have been obtained, forms the outermost layer.

Abstract: Provided is a method for producing a pellet capable of suppressing heat shock-induced crack occurrence, when nickel oxide ores are made into pellets and placed in a reducing furnace in a smelting process. In the method for producing a pellet from a nickel oxide ore, a nickel oxide ore, a binder and a carbonaceous reducing agent are mixed, the mixture is made into a lump, and then the resulting lump is subjected to a preheat treatment at a temperature of 350° C. to 600° C. In this preheat treatment, the lump more preferably undergoes the preheat treatment at a temperature of 400° C. to 550° C.

Abstract: Stepped sections (110) whereby the height of a block (100) gradually decreases towards the outside of the tire peripheral direction from the center of the block (100) are formed in a peripheral direction end section (160) of the block (100). The stepped sections (110) have a first stepped surface (111a) and a second stepped surface (121a). A stepped surface (110a) extends from an outside end section (140) towards an inside end section (150).

Abstract: A seal member is made of a composite material. The composite material includes: any one of an acrylic elastomer, a hydrogenated nitrile elastomer, a fluorinated elastomer, and a fluorosilicone elastomer as a main component; and a particulate filler and a fibrous filler. The particulate filler has a mean particle diameter of 1.0 ?m or more and 50 ?m or less. The fibrous filler has a mean diameter of 5.0 ?m or more and 20 ?m or less and has a mean length of 0.1 mm or more and 8 mm or less. Content of the particulate filler is 10% by volume or more and 35% by volume or less, and content of the fibrous filler is 5% by volume or more and 15% by volume or less.

Abstract: A motor which is capable of realizing further space saving and cost reduction. A cylindrical outer rotor 11 is rotatable around a central axis CL thereof. A plurality of magnets 13 are arranged at equal intervals on an inner circumferential surface of the outer rotor 11. Three Hall elements 15 to 17 are arranged to oppose the respective magnets 13 and detect switching of magnetic poles caused by movement of the respective magnets 13 passing through each vicinity of the Hall elements 15 to 17 when the outer rotor 11 rotates. The Hall element 17 is comprised of a linear Hall element that outputs a linear signal representing a linear change of a magnetic flux density caused by movement of the respective magnets 13. One of the respective magnets 13 is arranged offset along the central axis CL as compared to the other magnets 13.

Abstract: An object of the present technology is to provide a chlorine-concentration-measuring composition that can reduce staining by reagents, a measurement method using the chlorine-concentration-measuring composition and a method for reducing staining by chlorine-concentration-measuring composition using an aromatic sulfonic acid-based polymer or the salt thereof. Provided are a chlorine-concentration-measuring composition comprising an aromatic sulfonic acid-based polymer or the salt thereof; a chlorine-concentration-measuring composition comprising component (a) a color reagent for detection of residual chlorine and component (b) an aromatic sulfonic acid-based polymer or the salt thereof; a chlorine-concentration-measuring method comprising using the composition; and a method for reducing or preventing staining by using the chlorine-concentration-measuring composition comprising an aromatic sulfonic acid-based polymer or the salt thereof.