KR950011369A - 알루미나-탄화규소 복합분체의 제조방법 - Google Patents

알루미나-탄화규소 복합분체의 제조방법 Download PDF

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KR950011369A
KR950011369A KR1019930021357A KR930021357A KR950011369A KR 950011369 A KR950011369 A KR 950011369A KR 1019930021357 A KR1019930021357 A KR 1019930021357A KR 930021357 A KR930021357 A KR 930021357A KR 950011369 A KR950011369 A KR 950011369A
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South Korea
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silicon carbide
kaolin
alumina
carbon
refractory
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KR1019930021357A
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KR960006233B1 (ko
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정두화
김효준
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조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930021357A priority Critical patent/KR960006233B1/ko
Publication of KR950011369A publication Critical patent/KR950011369A/ko
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment

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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)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

본 발명은 알루미나-탄화규소체 불소성 내화물이나 탄소함유 내화물의 산화방지를 위해 첨가되는 탄화규소 분말 대신에 사용할 수 있는 알루미나-탄화규소 복합분체의 제조방법을 제공하고자 하는데 그 목적이 있다.
본 발명은 탄화규소 함유 내화 원료 제조방법에 있어서, 알루미나와 산화규소로 이루어진 평균입경 44㎛ 이하의 카올린(Kaolin, Al2o3·2Slo2·2H2O) 중에 포함된 SiO21몰%에 대하여, 각각 알루미늄 금속분말 0.3-1.0몰%와 탄소함유량이 4-6몰%로 구성된 카올린-탄소계 화합물을 알곤 또는 환원성 분위기에서 1400-1500℃로 3-5시간 열처리하여, 탄화규소의 입자크기가 2㎛ 이하인 Al2O3-SiC 복합분체를 제조하는 방법을 그 요지로 한다.
본 발명으로 제조된 복합분체는 입경이 작고, 반응성이 우수한 β-SiC가 생성되기 때문에, Al2O3-SiC-C계 불소성 내화물이나 탄소함유 내화물용 내화원료로 사용하면 내산화성이 우수한 내화물을 제조하는데 효과적이다.

Description

알루미나-탄화규소 복합분체의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (1)

  1. 탄화규소 함유 내화원료 제조방법에 있어서, 알루미나(Al2O3)와 산화규소(SiO2)로 이루어진 평균입경 44㎛ 이하의 카올린(Kaolin, Al2O3·2SiO2·2H2O)중에 함유된 SiO21몰%에 대하여, 0.3 내지 1.0몰%의 알루미나 금속분말과 탄소함유량이 4 내지 6몰%가 되도록, 타르, 피치, 레진, 카본블랙 및 흑연으로 이루어진 탄소공급원 그룹중에서 선택된 1종 또는 2종 이상을 상기 카올린에 첨가하여 구성된 카올린-탄소계화합물을 알곤 또는 환원성 분위기에서 1400 내지 1500℃로 3 내지 5시간 열처리하는 것을 특징으로 하는 알루미나-탄화규소(Al2O3-SiC) 복합분체의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930021357A 1993-10-14 1993-10-14 알루미나-탄화규소(Al₂O₃-SiC) 복합분체의 제조방법 KR960006233B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930021357A KR960006233B1 (ko) 1993-10-14 1993-10-14 알루미나-탄화규소(Al₂O₃-SiC) 복합분체의 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930021357A KR960006233B1 (ko) 1993-10-14 1993-10-14 알루미나-탄화규소(Al₂O₃-SiC) 복합분체의 제조방법

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KR950011369A true KR950011369A (ko) 1995-05-15
KR960006233B1 KR960006233B1 (ko) 1996-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100419059B1 (ko) * 1999-12-21 2004-02-14 재단법인 포항산업과학연구원 탄화규소-알루미나/알루미늄 복합체의 제조방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100419059B1 (ko) * 1999-12-21 2004-02-14 재단법인 포항산업과학연구원 탄화규소-알루미나/알루미늄 복합체의 제조방법

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