JP2020055710A - 熱間用乾式吹付材及び熱間乾式吹付施工方法 - Google Patents
熱間用乾式吹付材及び熱間乾式吹付施工方法 Download PDFInfo
- Publication number
- JP2020055710A JP2020055710A JP2018187646A JP2018187646A JP2020055710A JP 2020055710 A JP2020055710 A JP 2020055710A JP 2018187646 A JP2018187646 A JP 2018187646A JP 2018187646 A JP2018187646 A JP 2018187646A JP 2020055710 A JP2020055710 A JP 2020055710A
- Authority
- JP
- Japan
- Prior art keywords
- mass
- less
- binder
- limestone
- hot working
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
- C04B28/344—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
-
- 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
- C04B35/043—Refractories from grain sized mixtures
-
- 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
- C04B35/06—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 oxide mixtures derived from dolomite
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6306—Binders based on phosphoric acids or phosphates
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6306—Binders based on phosphoric acids or phosphates
- C04B35/6313—Alkali metal or alkaline earth metal phosphates
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
-
- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
- C04B2111/00163—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite by the dry process
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00577—Coating or impregnation materials applied by spraying
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
- C04B2235/321—Dolomites, i.e. mixed calcium magnesium carbonates
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5463—Particle size distributions
- C04B2235/5472—Bimodal, multi-modal or multi-fraction
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D2001/1605—Repairing linings
- F27D2001/161—Hot repair
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Ceramic Products (AREA)
Abstract
Description
なお、「熱間」とは被施工面の温度が概ね600℃以上の環境のことをいう。
耐火原料とバインダーとを含む熱間用乾式吹付材であって、
前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火原料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間用乾式吹付材。
耐火材料及びバインダーを含む配合物を、配管を通じて吹付ノズルに向けて圧送し、前記吹付ノズルの先端部において水を添加して熱間で吹き付ける熱間乾式吹付施工方法において、
前記配合物は、前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火原料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間乾式吹付施工方法。
中粒の苦土石灰石の含有量が10質量%未満であると、スラグ浸透抑制効果(耐スラグ浸透性向上効果)が十分には発揮されず、十分な耐食性向上効果が得られない。一方、苦土石灰石の含有量が50質量%を超えると、脱ガス反応により空隙(開放気孔)が過剰に生成され、結果としてスラグ浸透が助長されて耐食性が低下する。
中粒の苦土石灰石の含有量は、合量100質量%中において20質量%以上40質量%以下であることが好ましい。
ここで、微粒の苦土石灰石も前述の脱ガス反応によりCaOを生成するが、このCaOは、水との接触面積の大きい微粒の苦土石灰石より生成することから水和反応(CaO+2H2O→Ca2++2OH−)を起こしやすく、この水和反応により生じたCa2+がバインダー等と反応して吹付施工体のマトリクス部の結合強化(高強度化)に寄与すると考えられ、前述の高融点組成物生成には寄与しないと考えられる。
ただし、微粒の苦土石灰石を多量に含むと、前述のマトリクス部の結合強化(高強度化)作用よりも、前述の脱ガス反応による影響(空隙形成の影響)が強くなり、マトリックス部に空隙が過剰に生成され、結果として吹付施工体強度の著しい低下を招くと共に耐食性の低下も招くことになる。したがって、微粒の苦土石灰石の含有量は、合量100質量%中において35質量%以下(0を含む。)とする。
なお、バインダーには添加剤を使用してもよい。添加剤としては、硬化剤、分散剤、増粘剤などの各種の添加剤を使用することができる。例えば、硬化剤としては消石灰、分散剤としてはリン酸塩、増粘剤としては粘土を使用することができる。
水の添加量は、一般的な熱間乾式吹付施工方法と同様でよく、例えば合量100質量%に対して外掛けで10質量%以上40質量%以下である。
評価項目と評価方法は、以下のとおりである。
各例の熱間用乾式吹付材を吹付ノズルから15kg/分の吹付量で、被施工面として1000℃に加熱されたマグネシアれんがの表面に向けて1分間吹き付けた。このとき、吹付ノズルの先端部において添加する水の添加量は、合量100質量%に対して外掛けで20質量%とした。
1分間の吹付実施により概ね50mm厚の吹付材の施工体を含む吹付施工体が得られた。この吹付施工体から切り出した所定寸法の試料を、回転侵食試験機を用い、C/S=1.0の合成スラグを侵食剤として、1650〜1700℃で3時間侵食させた。各例の最大溶損量を測定し、実施例1の最大溶損量を100とした相対量を求めた。この相対量が小さいほど耐食性(耐スラグ浸透性)が高いということである。耐食性の評価では、この相対量が100以下の場合を◎(良)、100超110以下の場合を○(可)、110超の場合を×(不可)とした。
前述の要領で得た各例の吹付施工体から切り出した所定寸法の試料について、JISR2575に従い常温での圧縮強度を測定し、実施例1の圧縮強度を100とした相対値を求めた。この相対値が大きいほど吹付施工体強度が高いということである。吹付施工体強度の評価では、この相対値が80以上の場合を◎(良)、70以上80未満の場合を○(可)、70未満の場合を×(不可)とした。
図1の上段に示すように、ヨーカン形状のマグネシアれんがの中央に15mmの間隔を設け、その間に各例の吹付材に水(合量100質量%に対して外掛けで20質量%)を添加して混練したものを鋳込み、養生、乾燥後、図1の下段に示すようにヨーカンの先端より0.25MPaの荷重をかけた状態で1400℃で3時間焼成して試験片を得た。各例の試験片について接着面の曲げ強さを3点曲げ試験により測定し、実施例1の曲げ強さを100とした相対値を求めた。この相対値が大きいほど接着性が高いということである。接着性の評価では、この相対値が100以上の場合を◎(良)、60超100未満の場合を○(可)とした。
この接着性の評価は、実際の吹付施工において、吹付後に工業窯炉が稼働した後の吹付材と被施工面との接着強度を表す指標となる。
前述の各評価において、全て◎の場合を◎(良)、×がなく、いずれかに○がある場合を○(可)、いずれか一つが×の場合を×(不可)とした。この総合評価は、実際の吹付施工体の耐用性を表す指標となる。
比較例2は中粒の苦土石灰石の含有量が多い例である。前述の脱ガス反応により空隙(開放気孔)が過剰に生成されてスラグ浸透が助長され、結果として耐食性の評価が×(不可)となった。
比較例3は微粒の苦土石灰石の含有量が多い例である。前述の脱ガス反応による影響により、マトリックス部に空隙が過剰に生成され、結果として耐食性及び吹付施工体強度の評価が×(不可)となった。
耐火材料とバインダーとを含む熱間用乾式吹付材であって、
前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火材料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間用乾式吹付材。
耐火材料及びバインダーを含む配合物を、配管を通じて吹付ノズルに向けて圧送し、前記吹付ノズルの先端部において水を添加して熱間で吹き付ける熱間乾式吹付施工方法において、
前記配合物は、前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火材料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間乾式吹付施工方法。
Claims (4)
- 耐火原料とバインダーとを含む熱間用乾式吹付材であって、
前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火原料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間用乾式吹付材。 - 前記バインダーは、リン酸塩及び珪酸塩の中から選択される少なくとも1種を含むものである、請求項1に記載の熱間用乾式吹付材。
- 前記粒径0.075mm未満の苦土石灰石の含有量が5質量%以上35質量%以下である、請求項1又は2に記載の熱間用乾式吹付材。
- 耐火材料及びバインダーを含む配合物を、配管を通じて吹付ノズルに向けて圧送し、前記吹付ノズルの先端部において水を添加して熱間で吹き付ける熱間乾式吹付施工方法において、
前記配合物は、前記耐火材料及び前記バインダーの合量100質量%中において、粒径0.075mm以上1mm未満の苦土石灰石を10質量%以上50質量%以下含み、
前記耐火原料及びバインダーの合量100質量%中において、粒径0.075mm未満の苦土石灰石の含有量が35質量%以下(0を含む。)である、熱間乾式吹付施工方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018187646A JP6756794B2 (ja) | 2018-10-02 | 2018-10-02 | 熱間用乾式吹付材及び熱間乾式吹付施工方法 |
BR112021004445-0A BR112021004445A2 (pt) | 2018-10-02 | 2019-09-25 | material de pulverização, e, método de aplicação por pulverização a quente e a seco |
PCT/JP2019/037464 WO2020071189A1 (ja) | 2018-10-02 | 2019-09-25 | 熱間用乾式吹付材及び熱間乾式吹付施工方法 |
CN201980065209.7A CN112789257A (zh) | 2018-10-02 | 2019-09-25 | 热用干式喷涂材料及干式热喷涂施工方法 |
US17/281,369 US20220033302A1 (en) | 2018-10-02 | 2019-09-25 | Spray material for hot and dry spray application, and hot and dry spray application method |
TW108135450A TWI729513B (zh) | 2018-10-02 | 2019-10-01 | 熱用乾式噴塗材料及熱乾式噴塗施工方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018187646A JP6756794B2 (ja) | 2018-10-02 | 2018-10-02 | 熱間用乾式吹付材及び熱間乾式吹付施工方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019084415A Division JP2020055731A (ja) | 2019-04-25 | 2019-04-25 | 熱間用乾式吹付材及び熱間乾式吹付施工方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020055710A true JP2020055710A (ja) | 2020-04-09 |
JP6756794B2 JP6756794B2 (ja) | 2020-09-16 |
Family
ID=70055012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018187646A Active JP6756794B2 (ja) | 2018-10-02 | 2018-10-02 | 熱間用乾式吹付材及び熱間乾式吹付施工方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220033302A1 (ja) |
JP (1) | JP6756794B2 (ja) |
CN (1) | CN112789257A (ja) |
BR (1) | BR112021004445A2 (ja) |
TW (1) | TWI729513B (ja) |
WO (1) | WO2020071189A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022077378A (ja) * | 2020-11-11 | 2022-05-23 | 黒崎播磨株式会社 | 焼成炉用の乾式吹付材 |
WO2023013284A1 (ja) * | 2021-08-06 | 2023-02-09 | 黒崎播磨株式会社 | 焼成炉用の乾式吹付材 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145660A (ja) * | 1983-01-31 | 1983-08-30 | 品川白煉瓦株式会社 | 塩基性耐火組成物 |
JPS61155252A (ja) * | 1984-12-28 | 1986-07-14 | 株式会社神戸製鋼所 | 気体発生用耐火組成物 |
JPS62288155A (ja) * | 1986-06-04 | 1987-12-15 | 川崎炉材株式会社 | 石灰質耐火組成物 |
JP2004010458A (ja) * | 2002-06-11 | 2004-01-15 | Kawasaki Refract Co Ltd | 転炉用等の吹付け材 |
JP2006160558A (ja) * | 2004-12-07 | 2006-06-22 | Jfe Refractories Corp | 吹付け材料 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT257447B (de) * | 1965-11-12 | 1967-10-10 | Veitscher Magnesitwerke Ag | Feuerfeste Flickmasse, vorzugsweise für eine Trockenanwendung, und Verfahren zu ihrer Herstellung |
GB1354887A (en) * | 1970-07-23 | 1974-06-05 | Williamson Cliff Gunning Ltd | Refractory materials |
US5783510A (en) * | 1995-07-04 | 1998-07-21 | Asahi Glass Company Ltd. | Monolithic refractory composition wall |
JP4455791B2 (ja) * | 2001-11-20 | 2010-04-21 | 株式会社神戸製鋼所 | 炉内耐火物のコーティング方法 |
JP5372348B2 (ja) * | 2007-08-13 | 2013-12-18 | 新日鐵住金株式会社 | 熱間耐火物吹付装置、及び、熱間における不定形耐火物の吹付施工方法 |
KR20100135787A (ko) * | 2008-04-10 | 2010-12-27 | 시나가와 리프랙토리스 컴퍼니, 리미티드 | 열간 스프레이 보수재 |
CN102643098A (zh) * | 2012-05-11 | 2012-08-22 | 贵阳明通炉料有限公司 | 白云石质高温陶瓷基复合材料 |
JP5865200B2 (ja) * | 2012-07-11 | 2016-02-17 | 新日鐵住金株式会社 | 粉体急結剤及び不定形耐火物の吹き付け施工方法 |
TWI512095B (zh) * | 2013-11-19 | 2015-12-11 | China Steel Corp | 耐火無機組成物、耐火無機層及其製造方法 |
CN105060911B (zh) * | 2015-09-11 | 2017-11-10 | 攀钢集团西昌钢钒有限公司 | 一种转炉补炉料及其制造和使用方法 |
-
2018
- 2018-10-02 JP JP2018187646A patent/JP6756794B2/ja active Active
-
2019
- 2019-09-25 WO PCT/JP2019/037464 patent/WO2020071189A1/ja active Application Filing
- 2019-09-25 US US17/281,369 patent/US20220033302A1/en active Pending
- 2019-09-25 BR BR112021004445-0A patent/BR112021004445A2/pt unknown
- 2019-09-25 CN CN201980065209.7A patent/CN112789257A/zh active Pending
- 2019-10-01 TW TW108135450A patent/TWI729513B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145660A (ja) * | 1983-01-31 | 1983-08-30 | 品川白煉瓦株式会社 | 塩基性耐火組成物 |
JPS61155252A (ja) * | 1984-12-28 | 1986-07-14 | 株式会社神戸製鋼所 | 気体発生用耐火組成物 |
JPS62288155A (ja) * | 1986-06-04 | 1987-12-15 | 川崎炉材株式会社 | 石灰質耐火組成物 |
JP2004010458A (ja) * | 2002-06-11 | 2004-01-15 | Kawasaki Refract Co Ltd | 転炉用等の吹付け材 |
JP2006160558A (ja) * | 2004-12-07 | 2006-06-22 | Jfe Refractories Corp | 吹付け材料 |
Non-Patent Citations (1)
Title |
---|
耐火物手帳 改訂12版, JPN6019004678, 31 August 2015 (2015-08-31), JP, pages 309 - 580, ISSN: 0003976076 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022077378A (ja) * | 2020-11-11 | 2022-05-23 | 黒崎播磨株式会社 | 焼成炉用の乾式吹付材 |
WO2023013284A1 (ja) * | 2021-08-06 | 2023-02-09 | 黒崎播磨株式会社 | 焼成炉用の乾式吹付材 |
JP2023024242A (ja) * | 2021-08-06 | 2023-02-16 | 黒崎播磨株式会社 | 焼成炉用の乾式吹付材 |
Also Published As
Publication number | Publication date |
---|---|
TW202019858A (zh) | 2020-06-01 |
US20220033302A1 (en) | 2022-02-03 |
CN112789257A (zh) | 2021-05-11 |
TWI729513B (zh) | 2021-06-01 |
JP6756794B2 (ja) | 2020-09-16 |
WO2020071189A1 (ja) | 2020-04-09 |
BR112021004445A2 (pt) | 2021-05-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2007039255A (ja) | 製鋼用電気炉内張り補修用吹付材およびこれを使用した製鋼用電気炉内張りの吹付け補修方法 | |
JP2010536705A (ja) | 炭酸カルシウムの添加によってカルシウムを混入させた耐熱性物質 | |
WO2020071189A1 (ja) | 熱間用乾式吹付材及び熱間乾式吹付施工方法 | |
JP2020001992A (ja) | 乾式吹付け施工用不定形耐火物 | |
JP7174184B1 (ja) | 乾式吹き付け用不定形耐火物及びこれを用いた乾式吹き付け施工方法 | |
JP2020055731A (ja) | 熱間用乾式吹付材及び熱間乾式吹付施工方法 | |
JP4351526B2 (ja) | 使用済耐火物を配合した湿式吹付け用不定形耐火物 | |
JP2024500834A (ja) | セメント系組成物 | |
JP6408678B1 (ja) | 熱間用乾式吹付材及び熱間乾式吹付施工方法 | |
JP6280427B2 (ja) | 吹き付け施工用耐火物 | |
JPH0648846A (ja) | レススラグ操業転炉用熱間補修吹付材 | |
JP6454653B2 (ja) | ポルトランドセメント質急結剤スラリー及び湿式吹き付け施工方法 | |
JP2000016874A (ja) | 耐火物用急結剤及びそれを用いた吹付施工方法 | |
JPS5834423B2 (ja) | 塩基性耐火組成物 | |
JP3165171B2 (ja) | キャスタブル組成物 | |
JP2018039706A (ja) | 補修用不定形耐火物及び補修方法 | |
JP2001302362A (ja) | 不定形耐火物及びその施工方法 | |
JP2000351675A (ja) | 湿式吹付け施工用耐火物 | |
JPH05163073A (ja) | 耐火れんが間の充填材 | |
JP2015168596A (ja) | 不定形耐火物 | |
JP2607757B2 (ja) | タンディッシュ用塩基性質コーチング材 | |
JP4456193B2 (ja) | 耐火物吹付け施工方法 | |
CN104446527A (zh) | 一种钢包永久衬捣打料 | |
JPH11310470A (ja) | 湿式吹付用不定形耐火物 | |
JP3885133B2 (ja) | 吹付け用耐火物及び耐火物の吹付け方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181011 |
|
A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20181011 |
|
A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20181127 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20181204 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20181225 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20181225 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20190219 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20190425 |
|
C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20200428 |
|
C23 | Notice of termination of proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C23 Effective date: 20200721 |
|
C03 | Trial/appeal decision taken |
Free format text: JAPANESE INTERMEDIATE CODE: C03 Effective date: 20200825 |
|
C30A | Notification sent |
Free format text: JAPANESE INTERMEDIATE CODE: C3012 Effective date: 20200825 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200827 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6756794 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |