公开(公告)号：US11767269B2

公开(公告)日：2023-09-26

申请号：US16979951

申请日：2019-03-06

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Kazuhiro Honda ,  Kazunori Seki ,  Yoshitaka Ishii ,  Takafumi Yamada ,  Norikazu Shirama ,  Tsubasa Nakamichi

IPC: C04B35/66 ,  B05B7/24 ,  B05D1/02 ,  C04B35/622 ,  C04B35/626 ,  F27D1/00

CPC classification number: C04B35/66 ,  B05B7/24 ,  B05D1/02 ,  C04B35/6263 ,  C04B35/6264 ,  C04B35/62222 ,  F27D1/0006

Abstract: To improve the stability of spray application of a monolithic refractory in which a water injector is disposed in a material carrier pipe extending from a material supply device to a distal spray nozzle, and application water is injected from the water injector into a spray material that is being carried through the material carrier pipe, a ratio of a flow volume of an application water carrier gas for carrying the application water to be introduced into the water injector to a flow volume of a spray material carrier gas for carrying the spray material is set to 0.07 to 2, and a compressibility index of the spray material is set to 32% or less. Alternatively, a ratio of a flow volume of an application water carrier gas for carrying the application water to be introduced into the water injector to an application water volume is set to 100 to 1,000.

公开(公告)号：US11293696B2

公开(公告)日：2022-04-05

申请号：US15500417

申请日：2015-06-30

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Kazuhiro Honda

IPC: F27D1/16 ,  C23C4/10 ,  C22C1/05 ,  C04B35/66

Abstract: Provided is a thermal spray material capable of, when used in a thermal spray operation for repairing a furnace wall of an industrial furnace or for other purposes, maintaining good post-repetition bondability with respect to a target surface to thereby prevent peel-off of a resulting thermally sprayed deposit, and improving initial ignitability while suppressing dust-generating property. The thermal spray material comprised a basic compound comprising at least one of a Ca component and an Mg component, a metal Si powder, and a silica-based or alumina-silica based powder. A content rate of a fraction constituting the basic compound and having a particle size of 0.15 mm or less is 30 mass % or more with respect to 100 mass % of the basic compound, and a content rate of a fraction constituting the metal Si powder and having a particle size of 20 μm or less is from 10 mass % to 25 mass % with respect to 100 mass % of the thermal spray material. Further, (the content rate (mass %) of the fraction constituting the metal Si powder and having a particle size of 20 μm or less, with respect to 100 mass % of the thermal spray material)/(a content rate (mass %) of the fraction constituting the basic compound and having a particle size of 0.15 mm or less, with respect to 100 mass % of the thermal spray material) is from 0.8 to 10, and a content rate of a fraction constituting the metal Si powder and having a particle size of 10 μm or less is 60 mass % or more with respect to 100 mass % of the metal Si powder.

公开(公告)号：US09718734B2

公开(公告)日：2017-08-01

申请号：US15110141

申请日：2014-11-07

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Kazuhiro Honda ,  Taijirou Matsui

IPC: C04B35/14 ,  C23C4/06 ,  C01B33/02 ,  C23C4/067 ,  C04B35/622

CPC classification number: C04B35/14 ,  C01B33/02 ,  C04B35/62222 ,  C04B2235/3418 ,  C04B2235/428 ,  C23C4/067

Abstract: Disclosed is a technique for suppressing a firing property and a dust generating property while improving bondability, in a thermal spray material for use in a thermite spraying process. The thermal spray material comprises a refractory material powder and a metal Si powder and capable of being sprayed onto a target surface using oxygen or oxygen-containing gas as a carrier gas and melt-adhered to the target surface based on heat generated by combustion of the metal Si powder, wherein the metal Si powder is contained in an amount of 10 to 25 mass % with respect to the entire thermal spray material, and wherein the metal Si powder has a median size of 10 μm or less, and contains a fraction having a particle size of 2 μm or less in an amount of 8 mass % or less with respect to the entire metal Si powder.

公开(公告)号：US20140371051A1

公开(公告)日：2014-12-18

申请号：US14361953

申请日：2012-10-04

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Shunsuke Inadomi ,  Kazuhiro Honda ,  Aya Kusunoki ,  Kazuaki Haraguchi

IPC: C04B35/14

CPC classification number: C04B35/14 ,  C04B28/24 ,  C04B28/34 ,  C04B35/66 ,  C04B2111/00155 ,  C04B2111/28 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3418 ,  C04B2235/402 ,  C04B2235/405 ,  C04B2235/428 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/96 ,  F27D1/0006 ,  F27D1/10 ,  F27D1/1636 ,  C04B14/06 ,  C04B14/303 ,  C04B14/304 ,  C04B14/324 ,  C04B20/008

Abstract: The present invention addresses a technical problem of realizing a sprayable refractory material capable of, even when used in a dry-spraying installation process, ensuring mixability between a silica sol and a refractory composition to promote a hardening reaction, thereby achieving excellent durability. Provided is a dry-sprayable unshaped refractory material which comprises a refractory composition, and a silica sol containing a silica solid component in a concentration of 20 mass % to 50 mass %. The silica sol is added in such a manner that the silica solid component contained in an entirety of the silica sol reaches an amount of 3 mass % to 30 mass % with respect to and in addition to an entirety of the refractory composition assumed as 100 mass %, and the refractory composition contains a Mg- or Ca-containing compound having a particle size of 10 μm or less, wherein a ratio of a content of the Mg- or Ca-containing compound having a particle size of 10 μm or less in the refractory composition to a content of the silica solid component in the entirety of the silica sol is 0.02 or more.

Abstract translation: 本发明涉及实现可喷涂耐火材料的技术问题，即使在干喷涂安装工艺中使用时，也可确保二氧化硅溶胶和耐火材料组合物之间的混合性，从而促进硬化反应，从而获得优异的耐久性。 本发明提供一种含有耐火材料组合物的干式喷涂不定形耐火材料，含有浓度为20质量％〜50质量％的二氧化硅固体成分的二氧化硅溶胶。 添加二氧化硅溶胶使得全部二氧化硅溶胶中含有的二氧化硅固体成分相对于假定为100质量％的耐火材料组合物的总量为3质量％〜30质量％ ％，耐火材料组合物含有粒径为10μm以下的含Mg或Ca的化合物，其中，粒径为10μm以下的含Mg或Ca的化合物的含量比例 整个二氧化硅溶胶中的二氧化硅固体成分含量的耐火组合物为0.02以上。