JPS6215508B2 - - Google Patents

Info

Publication number
JPS6215508B2
JPS6215508B2 JP57053755A JP5375582A JPS6215508B2 JP S6215508 B2 JPS6215508 B2 JP S6215508B2 JP 57053755 A JP57053755 A JP 57053755A JP 5375582 A JP5375582 A JP 5375582A JP S6215508 B2 JPS6215508 B2 JP S6215508B2
Authority
JP
Japan
Prior art keywords
sio
cao
flame
thermal
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP57053755A
Other languages
English (en)
Other versions
JPS58172263A (ja
Inventor
Hiroyuki Sugimoto
Kazuo Fukaya
Yasushi Furuguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinagawa Shiro Renga KK
JFE Engineering Corp
Nippon Sanso Corp
Original Assignee
Shinagawa Shiro Renga KK
Nippon Sanso Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shinagawa Shiro Renga KK, Nippon Sanso Corp, Nippon Kokan Ltd filed Critical Shinagawa Shiro Renga KK
Priority to JP57053755A priority Critical patent/JPS58172263A/ja
Priority to US06/477,759 priority patent/US4486545A/en
Priority to DE3311699A priority patent/DE3311699C2/de
Priority to FR8305424A priority patent/FR2524462B1/fr
Priority to GB08309102A priority patent/GB2118164B/en
Publication of JPS58172263A publication Critical patent/JPS58172263A/ja
Publication of JPS6215508B2 publication Critical patent/JPS6215508B2/ja
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653Processes involving a melting step
    • C04B35/657Processes involving a melting step for manufacturing refractories
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B29/00Other details of coke ovens
    • C10B29/06Preventing or repairing leakages of the brickwork
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/16Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
    • F27D1/1647Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
    • F27D1/1652Flame guniting; Use of a fuel
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00146Sprayable or pumpable mixtures
    • C04B2111/00155Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72Repairing or restoring existing buildings or building materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208Calcium oxide or oxide-forming salts thereof, e.g. lime
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427Silicates other than clay, e.g. water glass
    • C04B2235/3436Alkaline earth metal silicates, e.g. barium silicate
    • C04B2235/3454Calcium silicates, e.g. wollastonite
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/16Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
    • F27D1/1647Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
    • F27D1/1652Flame guniting; Use of a fuel
    • F27D2001/1663Fluid fuel, e.g. gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Coating By Spraying Or Casting (AREA)

Description

【発明の詳細な説明】
本発明は溶射材、特にコークス炉等の加熱冷却
のサイクルの多い窯炉のの損傷部分を火炎溶射補
修する溶射材料に関する。 最近コークス炉においても火炎溶射による補修
が行われ、補修時間、補修部接着力、耐用性等に
おいて顕著な効果を示している。既知の火炎溶射
に用いられる溶射材料は耐火度1100℃〜1280℃の
SiO2を約70%含んでなる材料である。 コークス炉は珪石レンガによつて炉積みされて
いるが、この珪石レンガの熱間線膨張率は300℃
から500℃までは急激に大きくなり、それ以上の
温度ではほとんど増大しないでフラツトになる性
質を示す。このため500℃以上で使用される珪石
レンガの熱スポーリング抵抗性は非常に大きい
が、この珪石レンガにSiO270%前後の溶射材を
溶射補修しても、この溶射膜は1000℃程度まで直
線的に膨張するため、母材の珪石レンガとは熱間
膨張の挙動が異なる。このため母材の珪石レンガ
と接着した溶射膜との間に熱的歪みが生じ溶射膜
が剥離し充分な耐用性が得られていないのが現状
である。 本発明の目的は熱間線膨張率が非常に低く、且
つ珪石レンガの熱間膨張率と同様な挙動を示すた
め耐スポーリング性にすぐれた火炎溶射材料を堤
供するにある。 本発明によるコークス炉等の珪石レンガ溶射補
修に用いる火炎溶射材料はSiO2材とCaO−SiO2
系材料とを組合わせ、本質的にSiO285〜98%及
びCaO−SiO2系材料がCaOとして2〜15重量%
からなり、0.5mm以下の粒径をもつ粉末状混合物
であつて、付随する不純物は5重量%以下であ
り、酸素−燃料ガスからなる火炎中で半溶融また
は溶融して炉壁へ接着させるものである。 本発明による火炎溶射材料は珪石、珪砂、珪酸
鉱とポルトランドセメント、オラストナイト、ダ
イカルシウムシリケート等のCaO−SiO2系材料
とを組合わせることによつて得られる。CaO−
SiO2原料はポルトランドセメント、オラストナ
イト、ダイカルシウムシリケートが好ましく、
CaOは火炎溶射では溶射不能で、CaCO3、Ca
(OH)2は熱分解により高融点のCaOとなるため火
炎溶射は難しく、且つSiO2材との反応速度も遅
く接着できない。 これに対して、CaO−SiO2系材料はCaOに比
べ融点が低く、SiO2材との反応が良く、優れた
接着性が得られる。従つて、CaCO3、Ca(OH)2
の使用はCaO同様に溶射が難しい。 本発明の火炎溶射材料は上述のように珪石レン
ガの熱間膨張率と同様な挙動を示すが、CaO含有
量が2重量%未満となるとSiO2の溶融粘性が非
常に高いために酸素−燃料ガスを使用する火炎溶
射では接着可能なまでに溶融粘性を下げることが
できないため、接着率が低下すると共に接着した
溶射膜も焼結しておらず、溶射膜自体の強度も非
常に低いものとなる。CaOが15重量%以上となる
と珪石レンガと似た熱間膨張性が消失して直線状
に増大する膨張率を示すようになり、剥離損傷し
やすくなるので好ましくない。SiO2が85重量%
未満及び98重量%を越えると、それぞれCaOが15
重量%を越えた場合及び2重量%未満の場合に対
応した欠点を生ずる。不純物が5重量%を越える
と熱間膨張率を直線状に増大するものとなすため
好ましくない。火炎溶射材料粉末の粒度が0.5mm
を越えると酸素−ガス炎中では溶融せず、ほとん
どリバウンドロスとなり、接着率が低下する原因
となる。 本発明の火炎溶射材料は、SiO2のみでは溶融
粒度が高すぎて接着率が低下し溶射膜の強度が欠
除している欠点を特定量のCaOを添加することに
よつてSiO2の溶融粘性を低下させることによつ
て溶射体の接着率を向上させ、溶射膜の熱間強度
を向上させると共に、珪石レンガと類似の熱間膨
張挙動を保持させることによつて溶射膜の剥離損
傷を抑制できた点において火炎溶射材料として工
業的意義は大きい。本発明による火炎溶射材料は
稼動中の炉の補修に使用可能である。 以下に実施例及び比較例を掲げて本発明を説明
する。 実施例〜及び比較例 下記表に記載の組成の火炎溶射材料を常法に従
い珪石レンガ上に溶射した。結果を下記に示す:
【表】
【表】 上記の表からわかるように、本発明による火炎
溶射材料は接着強度、曲げ強度共に良好で、加熱
−冷却の熱サイクルテストにおいても珪石レンガ
との剥離は見られず、従来の溶射材料よりもすぐ
れた性質をもつことがわかる。

Claims (1)

    【特許請求の範囲】
  1. 1 SiO2材とCaO−SiO2系材料とを組合わせ、
    本質的にSiO285〜98重量%及びCaO−SiO2系の
    材料がCaOとして2〜15重量%からなる、コーク
    ス炉等の珪石レンガの溶射補修に用いる溶射材
    料。
JP57053755A 1982-04-02 1982-04-02 SiO↓2−CaO系低膨張性火炎溶射材料 Granted JPS58172263A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP57053755A JPS58172263A (ja) 1982-04-02 1982-04-02 SiO↓2−CaO系低膨張性火炎溶射材料
US06/477,759 US4486545A (en) 1982-04-02 1983-03-22 SIO2 -CaO Based low cubically expansive flame-spraying material
DE3311699A DE3311699C2 (de) 1982-04-02 1983-03-30 Pulverförmige, zum Aufbringen mittels der Flammspritztechnik geeignete Überzugsmasse auf der Basis von SiO↓2↓ und deren Anwendung zum Ausbessern von Ofenauskleidungen
FR8305424A FR2524462B1 (fr) 1982-04-02 1983-04-01 Matiere a projeter a la flamme a faible dilatation a base de sio2 et cao
GB08309102A GB2118164B (en) 1982-04-02 1983-04-05 Sio2-cao-based low-volumetrically-expansive flame-spraying material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57053755A JPS58172263A (ja) 1982-04-02 1982-04-02 SiO↓2−CaO系低膨張性火炎溶射材料

Publications (2)

Publication Number Publication Date
JPS58172263A JPS58172263A (ja) 1983-10-11
JPS6215508B2 true JPS6215508B2 (ja) 1987-04-08

Family

ID=12951623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57053755A Granted JPS58172263A (ja) 1982-04-02 1982-04-02 SiO↓2−CaO系低膨張性火炎溶射材料

Country Status (4)

Country Link
JP (1) JPS58172263A (ja)
DE (1) DE3311699C2 (ja)
FR (1) FR2524462B1 (ja)
GB (1) GB2118164B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050470A1 (fr) * 1998-03-27 1999-10-07 Kawasaki Steel Corporation Melange de reparation poudreux, projete a chaud
JP2017145452A (ja) * 2016-02-17 2017-08-24 品川リフラクトリーズ株式会社 溶射材料

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60215579A (ja) * 1984-04-06 1985-10-28 品川白煉瓦株式会社 火炎溶射用塩基性耐火組成物
JPS63190155A (ja) * 1987-02-03 1988-08-05 Nippon Steel Corp 高シリカ質溶射材料
LU87969A1 (fr) * 1991-07-03 1993-02-15 Glaverbel Procede et melange destine a former une masse refractaire coherente sur une surface
US5686028A (en) * 1991-07-03 1997-11-11 Glaverbel Process for forming a coherent refractory mass on a surface
JPH0747197B2 (ja) * 1992-01-27 1995-05-24 東京窯業株式会社 溶鋼の連続鋳造用ノズル
JPH0747198B2 (ja) * 1992-02-24 1995-05-24 明智セラミックス株式会社 溶鋼の連続鋳造用ノズル
JP4464804B2 (ja) * 2004-11-30 2010-05-19 黒崎播磨株式会社 工業窯炉補修用溶射材

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD48337A (ja) *
GB621092A (en) * 1947-01-27 1949-04-04 Joseph Poulson Improvements relating to the treatment of gas retorts
DE839469C (de) * 1950-11-30 1952-05-19 Canadian Refractories Ltd Thermoplastische feuerfeste Materialien
US3333840A (en) * 1964-11-30 1967-08-01 Harbison Walker Refractories Method of lining a metallurgical furnace and the product thereof
GB1225355A (ja) * 1967-06-03 1971-03-17
FR2429762A1 (fr) * 1978-06-29 1980-01-25 Carbonisation Entr Ceram Procede pour la construction de fours a coke, piece obtenue et four realise selon ce procede
DE2913035A1 (de) * 1979-03-31 1980-10-02 Julius Aberle Werkstoff fuer bauzwecke und verfahren zu seiner herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050470A1 (fr) * 1998-03-27 1999-10-07 Kawasaki Steel Corporation Melange de reparation poudreux, projete a chaud
JP2017145452A (ja) * 2016-02-17 2017-08-24 品川リフラクトリーズ株式会社 溶射材料

Also Published As

Publication number Publication date
FR2524462A1 (fr) 1983-10-07
DE3311699A1 (de) 1983-10-13
GB2118164A (en) 1983-10-26
FR2524462B1 (fr) 1987-01-16
JPS58172263A (ja) 1983-10-11
GB2118164B (en) 1985-07-31
DE3311699C2 (de) 1986-12-04

Similar Documents

Publication Publication Date Title
CN103449831A (zh) 一种焦炉修补用焊补料及修补焦炉的方法
JPS6215508B2 (ja)
CN101033144B (zh) 一种用于砌筑高炉炉身石墨砖与碳化硅砖的复合胶泥
US4060424A (en) Low temperature setting refractory cements
US5866049A (en) Process and mixture for forming a coherent Refractory mass on a surface
JPS6229389B2 (ja)
US4486545A (en) SIO2 -CaO Based low cubically expansive flame-spraying material
JP3103523B2 (ja) 溶射材料
US3333840A (en) Method of lining a metallurgical furnace and the product thereof
KR20030059148A (ko) 내화성 물품
JP2022077378A (ja) 焼成炉用の乾式吹付材
JPH0648846A (ja) レススラグ操業転炉用熱間補修吹付材
JPS6338564A (ja) 炉壁補修用溶射材料
JP6372533B2 (ja) コークス炉炉底補修材
US1204211A (en) Silicon-carbid refractory article.
US2889229A (en) Process for the manufacture of fire resistant material containing silicates
JPS59227780A (ja) SiO↓2−Al↓2O↓3−Li↓2O系溶射用粉末材料
WO1999050470A1 (fr) Melange de reparation poudreux, projete a chaud
JPH01148757A (ja) パッチング補修材
JP3009815B2 (ja) チタン酸アルミニウム−アルミナ質溶射材
JPS6156192B2 (ja)
JPS58172271A (ja) SiO↓2−Al↓2O↓3−MgO系低膨張性火炎溶射材料
JPS638268A (ja) MgO・Al↓2O↓3・SiO↓2・Li↓2O系低膨張性溶射材料
JPS6115906B2 (ja)
JPH0321837B2 (ja)