Abstract: A steam turbine according to the present invention comprises: a shaft which rotates about the rotation axis thereof; a plurality of moving blades which extend in the radial direction from the outer peripheral surface of the shaft and which are arranged along the circumferential direction; a casing main body which covers the shaft and the moving blades from the outer peripheral side; a plurality of stationary blades which are arranged on the inner circumferential surface of the casing main body; and a substance supply unit which supplies, to the surfaces of the moving blades and/or the surfaces of the stationary blades, a film forming substance that is hydrophobic, wherein the substance supply unit has a storage unit, a supply passage which is formed inside the casing and through which the film forming substance flows, and discharge units which are formed inside the moving blades and/or the stationary blades and which guide the film forming substance to the surfaces.

Abstract: A method of cleaning a blade of a rotary device includes: a first application step of applying a water-soluble cleaning liquid containing a surfactant to the blade; a setting-aside step of setting the blade to which the cleaning liquid has been applied aside; a first wiping step of wiping the blade after the setting-aside step; a second application step of applying water or a dilute cleaning liquid having a lower concentration of the surfactant than that in the cleaning liquid applied in the first application step to the blade after the first wiping step; and a second wiping step of wiping the blade after the second application step.

Abstract: A corrosion sensor includes an inner electrode formed of a conductive material, the inner electrode including a columnar portion around an axial line as a center thereof and of which an outer circumferential surface is tapered, wherein a diameter of the outer circumferential surface decreases toward one side in an axial direction, an outer electrode formed of a conductive material, the outer electrode including a cylindrical portion around the axial line and of which an inner circumferential surface is tapered, wherein a diameter of the inner circumferential surface decreases toward the one side in the axial direction, and the cylindrical portion is positioned such that the inner circumferential surface radially faces the outer circumferential surface, and an insulation layer formed of an insulation material and in a position across which the outer circumferential surface faces the inner circumferential surface.

Abstract: A thermal barrier coating film includes a bond coat layer that is a metallic bond layer formed on a base material; a topcoat layer that is a ceramic-containing layer formed on the bond coat layer; and at least one of a protective layer and a protective substance. The protective layer is formed on the topcoat layer and mainly contains SrSO4. The protective substance is provided in a plurality of void spaces included in the topcoat layer and mainly contains SrSO4.

Abstract: A solid-gas reaction substance-filled reactor includes a core part in which heat medium heat-transfer tubes and spacers are alternately stacked, a gas introduction/discharge part that communicates with opening ends of the spacers, and a heat medium introduction/discharge part that communicates with heat medium flow paths. Filled bodies including metallic foil bags and a solid-gas reaction substance filled in the bags are inserted into the spacers. At least the filled bodies and the heat medium heat-transfer tubes are brazed to each other. The solid-gas reaction substance-filled reactor is obtained by stacking the filled bodies with the solid-gas reaction substance filled into the metallic bags, the heat medium heat-transfer tubes, and the spacers in a predetermined order and then brazing them.

Abstract: A corrosion sensor includes an inner electrode formed of a conductive material, including a columnar portion around an axial line as a center thereof and of which an outer circumferential surface is tapered, wherein a diameter of the tapered outer circumferential surface is gradually reduced as it moves toward one side in an axial direction, an outer electrode formed of a conductive material, including a cylindrical portion around the axial line and of which an inner circumferential surface is tapered, wherein a diameter of the tapered inner circumferential surface is gradually reduced as it moves toward the one side in the axial direction, and the cylindrical portion is provided such that the tapered inner circumferential surface radially faces the tapered outer circumferential surface, and an insulation layer formed of an insulation material and installed in a place across which the tapered outer circumferential surface faces the tapered inner circumferential surface.

Abstract: Provided is a production method for refining iron oxide (hematite), which has such a low sulfur content as to be used as a raw material for ironmaking from a leach residue containing iron oxide, the leach residue being produced by a high pressure acid leach (HPAL) process and being a raw material that can be cheaply and stably procured. In the method of producing (high purity) hematite for ironmaking by a process of adding an oxidant and sulfuric acid to nickel oxide ore and then leaching nickel, a leach residue obtained after the leaching of nickel is heated to 600° C. or more, and preferably 800° C. or more and 1400° C. or less.

Abstract: The present invention provides a chromium-containing water treatment method that allows treatment of water that contains chromium (chromium-containing water) at low cost. A chromium-containing water treatment method according to the present invention comprises: a reduction step in which chromium-containing water 11 and a liquid 12 containing 5-50 ppm of hydrogen sulfide are mixed, and the mixture is adjusted to pH 3.5 or lower and ORP 200-400 mV by adding an acid 13 thereto, so as to reduce chromium contained in the water; and a precipitation separation step in which a neutralizing agent is added to a solution 11? obtained via the reduction step so as to adjust the solution 11? to pH 8-9, thereby precipitating and separating, as a hydroxide, the reduced chromium contained in the solution.

Abstract: A ceramic coating includes: a ceramic layer; a molten-and-solidified layer formed on a surface of the ceramic layer; and a packed layer including ceramic packed in a crack which extends in a thickness direction of the molten-and-solidified layer.

Abstract: A thermal barrier coating film includes a bond coat layer that is a metallic bond layer formed on a base material; a topcoat layer that is a ceramic-containing layer formed on the bond coat layer; and at least one of a protective layer and a protective substance. The protective layer is formed on the topcoat layer and mainly containing SrSO4. The protective substance is provided in the interior of a plurality of void spaces included in the topcoat layer and mainly contains SrSO4.

Abstract: A solid-gas reaction substance-filled reactor includes a core part in which heat medium heat-transfer tubes and spacers are alternately stacked, a gas introduction/discharge part that communicates with opening ends of the spacers, and a heat medium introduction/discharge part that communicates with heat medium flow paths. Filled bodies including metallic foil bags and a solid-gas reaction substance filled in the bags are inserted into the spacers. At least the filled bodies and the heat medium heat-transfer tubes are brazed to each other. The solid-gas reaction substance-filled reactor is obtained by stacking the filled bodies with the solid-gas reaction substance filled into the metallic bags, the heat medium heat-transfer tubes, and the spacers in a predetermined order and then brazing them.

Abstract: A substrate processing apparatus includes: an operation unit, which is provided with a storage unit that stores a plurality of recipes including a recipe for processing a member that constitutes the inside of a reactor in which substrate processing is performed, and a recipe for processing an exhaust pipe through which a gas released from the inside of the reactor flows, the operation unit further being provided with a display unit that displays a setting condition for executing the recipes on an operation screen; and a control unit that executes the recipe that meets the setting condition. The operation unit includes a recipe control unit, which controls, based on the setting condition, execution of the recipe for processing the member constituting the inside of the reactor in which the substrate processing is performed, and the recipe for processing the exhaust pipe, among the recipes stored in the storage unit.

Abstract: Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid acidic solution containing nickel and cobalt and a high iron ions concentration as the sulfidation start solution. This method generates a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid acidic solution, which is the sulfidation start solution, contains iron ions at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.

Abstract: The present invention provides a chromium-containing water treatment method that allows treatment of water that contains chromium (chromium-containing water) at low cost. A chromium-containing water treatment method according to the present invention comprises: a reduction step in which chromium-containing water 11 and a liquid 12 containing 5-50 ppm of hydrogen sulfide are mixed, and the mixture is adjusted to pH 3.5 or lower and ORP 200-400 mV by adding an acid 13 thereto, so as to reduce chromium contained in the water; and a precipitation separation step in which a neutralizing agent is added to a solution 11? obtained via the reduction step so as to adjust the solution 11? to pH 8-9, thereby precipitating and separating, as a hydroxide, the reduced chromium contained in the solution.

Abstract: Provided is a method for producing nickel sulfide from an acidic sulfuric acid solution containing nickel, which is capable of suppressing particle diameters of nickel sulfide obtained thereby. The present invention is a method for producing nickel sulfide by causing a sulfurization reaction by blowing a hydrogen sulfide gas into an acidic sulfuric acid solution containing nickel, wherein: nickel sulfide having particle diameters of 5-20 ?m and serving as seed crystals is added into an acidic sulfuric acid solution having a nickel concentration of 0.5-5.0 g/L in an amount of 40-500% by mass relative to the amount of nickel contained in the acidic sulfuric acid solution; and a hydrogen sulfide gas is blown into the acidic sulfuric acid solution, into which the seed crystals have been added, while setting the amount of the hydrogen sulfide gas blown in to be within the range of 0.30-0.85 Nm3/kg-Ni.

Abstract: Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid acidic solution containing nickel and cobalt and a high iron ions concentration as the sulfidation start solution. This method generates a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid acidic solution, which is the sulfidation start solution, contains iron ions at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.

Abstract: The present invention provides a hydrometallurgical method for nickel oxide ore, wherein the plant can be smoothly started up without imposing a load onto a filter cloth for a separation treatment of zinc sulfide, and the amount of residual zinc in a mother liquor for nickel recovery can be reduced to 1 mg/L. In the plant start-up after the completion of a periodic inspection, a post-neutralization solution is controlled to return to a neutralization reaction tank via circulation piping by adjustment of a switching valve in flow piping without sulfurizing post-neutralization solution. When the flow rate and/or the temperature of the post-neutralization solution circulated reaches a predetermined value, a sulfurization treatment is applied to the post-neutralization solution in the dezincification reaction tank to form zinc-sulfide-containing mother liquor for nickel recovery and adjust the switching valve.

Abstract: Provided is a method for producing nickel sulfide from an acidic sulfuric acid solution containing nickel, which is capable of suppressing particle diameters of nickel sulfide obtained thereby. The present invention is a method for producing nickel sulfide by causing a sulfurization reaction by blowing a hydrogen sulfide gas into an acidic sulfuric acid solution containing nickel, wherein: nickel sulfide having particle diameters of 5-20 ?m and serving as seed crystals is added into an acidic sulfuric acid solution having a nickel concentration of 0.5-5.0 g/L in an amount of 40-500% by mass relative to the amount of nickel contained in the acidic sulfuric acid solution; and a hydrogen sulfide gas is blown into the acidic sulfuric acid solution, into which the seed crystals have been added, while setting the amount of the hydrogen sulfide gas blown in to be within the range of 0.30-0.85 Nm3/kg-Ni.

Abstract: A method of producing (high-purity) hematite for ironmaking includes adding an oxidant and sulfuric acid to nickel oxide ore and then leaching nickel. The method further includes forming a neutralized residue having a sulfur grade exceeding 1.0% by weight by adding a neutralizing agent to leach slurry and being subjected to solid-liquid separation. The neutralizing agent functions to form plaster by reaction with a free sulfuric acid of surplus acid contained in the leach slurry. The leach slurry is a mixture of a leachate and a leach residue obtained after leaching the nickel. The method then includes heating the neutralized residue at a heating temperature of 600° C. or more and 1400° C. or less to form hematite having a sulfur grade of 1.0% or less by weight.

Abstract: Provided is a production method for refining iron oxide (hematite), which has such a low sulfur content as to be used as a raw material for ironmaking from a leach residue containing iron oxide, the leach residue being produced by a high pressure acid leach (HPAL) process and being a raw material that can be cheaply and stably procured. In the method of producing (high purity) hematite for ironmaking by a process of adding an oxidant and sulfuric acid to nickel oxide ore and then leaching nickel, a leach residue obtained after the leaching of nickel is heated to 600° C. or more, and preferably 800° C. or more and 1400° C. or less.