KR940002197A - MgO-Al₂O₃-based powder spraying materials for hot repair of industrial furnaces - Google Patents

MgO-Al₂O₃-based powder spraying materials for hot repair of industrial furnaces Download PDF

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Publication number
KR940002197A
KR940002197A KR1019920011859A KR920011859A KR940002197A KR 940002197 A KR940002197 A KR 940002197A KR 1019920011859 A KR1019920011859 A KR 1019920011859A KR 920011859 A KR920011859 A KR 920011859A KR 940002197 A KR940002197 A KR 940002197A
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South Korea
Prior art keywords
mgo
powder
powder spraying
materials
less
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KR1019920011859A
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Korean (ko)
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KR940007226B1 (en
Inventor
김인술
홍기곤
박노형
Original Assignee
정명식
포항종합제철 주식회사
백덕현
재단법인산업과학기술 연구소
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Priority to KR1019920011859A priority Critical patent/KR940007226B1/en
Publication of KR940002197A publication Critical patent/KR940002197A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

본 발명은 각종 공업요로, 특히, 철강업용, 진공탈가스 설비, 래들 및 턴디쉬 내화물의 손상부위를 화염용사 보수하는 분말 용사재료에 관한 것으로서, 각종 공업용로에 사용되고 있는 각종 염기성 내화물에 대한 화염용사 보수로 설비수명의 연장, 조입안정, 생간원가절감을 각각올수 있는 MgO-Al2O3계 분말용사재료를 제공하고자 하는데, 그 목적이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to powder spraying materials for flame spraying repair of damaged parts of various industrial furnaces, especially steel industry, vacuum degassing equipment, ladles and tundish refractory materials, and flame spraying materials for various basic refractory materials used in various industrial furnaces. The aim is to provide MgO-Al 2 O 3 powder spraying materials that can extend the life of equipment, stabilize the insertion, and reduce the cost of living.

본 발명은 공업 요로의 열간 보수 MgO-Al2O3계 분말 용사재료에 있어서, 입력 30㎛이하의 MgO분말 : 45-80중량%: 및 입경 210㎛이하의 알루미나, 알루미나시멘트, 전로슬래그 보통시멘트 돌로마이트 마고네사이트, 및 스피넬로 구성된 그룹중에 선택된 2종이상의 첨가원료 분말: 20-55중량%로 조성되거나, 또는 상기 첨가 원료분말로서 전로 슬래그 또는 보통 시멘트를 단독으로 20-55중량%첨가하여 조성되는 공업요료의 열간보수용 Mgo-Al2O3계 분말 용사재료를 그 요지로 한다.The present invention is a hot-repair MgO-Al 2 O 3 powder spraying material for industrial urinary tract, MgO powder with input of 30 μm or less: 45-80 wt%: and alumina, alumina cement, converter slag ordinary cement with particle diameter of 210 μm or less 2 or more additive powders selected from the group consisting of dolomite magonecite and spinel: 20-55 wt%, or by adding 20-55 wt% of converter slag or ordinary cement alone as the additive raw material powder. Mgo-Al 2 O 3 -based powder spraying material for hot repair of industrial raw materials.

Description

공업요로의 열간보수용 MgO－Al2O3계 분말용사재료MgO-Al2O3-based powder spraying materials for hot repair of industrial furnaces

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명 및 비교법에 의한 MgO－Al2O3계 분말용사재료의 제조공정도,1 is a manufacturing process chart of the MgO-Al 2 O 3 powder spraying material according to the present invention and the comparative method,

제2도는 MgO 분말 원료의 입도 분석결과로서 입경별 중량을 나타내는 그래프.2 is a graph showing the weight by particle size as a result of particle size analysis of MgO powder raw material.

Claims (3)

공업요료의 열간 보수 MgO－Al2O3계 분말 용사재료에 있어서, 입력 30㎛이하의 MgO분말 : 45-80중량%; 및 입경 210㎛이하의 알루미나, 알루미나 시멘트, 절로슬래그, 보통시멘트, 돌로마이트, 마그네사이트, 및 스피넬로 구성된 그룹중에서 선택된 2종이상의 첨가원료 분말 : 20-55중량%로 조성되는 것을 특징으로 하는 공업요로의 열간보수용 MgO－Al2O3계 분말용사재료.The hot water-retaining MgO-Al 2 O 3 powder spraying material for industrial ingredients, comprising: MgO powder having an input of 30 m or less: 45-80 wt%; And at least two kinds of additive raw material powders selected from the group consisting of alumina, alumina cement, section slag, ordinary cement, dolomite, magnesite, and spinel having a particle diameter of 210 µm or less: 20-55 wt%. MgO-Al 2 O 3 powder spraying material for hot repair. 제1항에 있어서, 첨가원료분말이 전로슬래그 또는 보통시멘트 단독인 것을 특징으로 하는 공업요로의 열간보수용 MgO－Al2O3계 분말용사재료.The hot spray MgO-Al 2 O 3 powder spraying material for industrial furnaces according to claim 1, wherein the additive raw material powder is converter slag or ordinary cement alone. 제1항 또는 제2항에 있어서, 상기 MgO원료분말과 첨가원료 분말에 있어 그 입경이 10㎛이하인 입자의 함유량이 10중량%이하인 것을 특징으로 하는 공업요로의 열간보수용 MgO－Al2O3계 분말용사재료.The MgO-Al 2 O 3 for hot repair of an industrial furnace according to claim 1 or 2, wherein the MgO raw powder and the additive raw powder have a content of particles having a particle diameter of 10 µm or less of 10 wt% or less. Powder spraying materials. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920011859A 1992-07-03 1992-07-03 Mo-al203 low expansion flame spray material KR940007226B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920011859A KR940007226B1 (en) 1992-07-03 1992-07-03 Mo-al203 low expansion flame spray material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920011859A KR940007226B1 (en) 1992-07-03 1992-07-03 Mo-al203 low expansion flame spray material

Publications (2)

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KR940002197A true KR940002197A (en) 1994-02-16
KR940007226B1 KR940007226B1 (en) 1994-08-10

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Application Number Title Priority Date Filing Date
KR1019920011859A KR940007226B1 (en) 1992-07-03 1992-07-03 Mo-al203 low expansion flame spray material

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100413281B1 (en) * 1998-12-30 2004-05-22 주식회사 포스코 Basic castable composition for tundish bottom reinforcement using waste refractories

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100413281B1 (en) * 1998-12-30 2004-05-22 주식회사 포스코 Basic castable composition for tundish bottom reinforcement using waste refractories

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KR940007226B1 (en) 1994-08-10

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