CN109437935A - The production method of phosphate high-alumina brick - Google Patents

The production method of phosphate high-alumina brick Download PDF

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Publication number
CN109437935A
CN109437935A CN201811569526.6A CN201811569526A CN109437935A CN 109437935 A CN109437935 A CN 109437935A CN 201811569526 A CN201811569526 A CN 201811569526A CN 109437935 A CN109437935 A CN 109437935A
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brick
siliceous
phosphate
alumina
phosphate high
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CN201811569526.6A
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Inventor
牛伟海
张顺卿
张晓强
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Zhengzhou Shuntong New Refractory Materials Co Ltd
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Zhengzhou Shuntong New Refractory Materials Co Ltd
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Priority to CN201811569526.6A priority Critical patent/CN109437935A/en
Publication of CN109437935A publication Critical patent/CN109437935A/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
    • C04B35/66—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
    • C04B35/185—Mullite 3Al2O3-2SiO2
    • 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
    • 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
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • 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
    • C04B35/6309—Aluminium 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
    • 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
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • C04B2235/9623—Ceramic setters properties

Abstract

The invention discloses a kind of production methods of phosphate high-alumina brick, are by Al2O3The bauxite chamotte 93% of > 85%；Siliceous second-hand brick fine powder 6%；Silicon powder 1% is raw material, it is prepared using the phosphate dihydrogen aluminum solution of concentration 55% as bonding agent: bauxite chamotte, siliceous second-hand brick fine powder and silicon powder and appropriate bonding agent phosphate dihydrogen aluminum solution being added in forced action type batch mixer together and stirred evenly first, ageing mixture was kneaded 15min after 4 hours again again, it is pressed into adobe with 400 tons of press machines, then enters to bake 72 hours in 600 DEG C of low temperature kilns and obtains finished product phosphate high-alumina brick.The present invention not only solves the processing problem of part waste and scrap as the secondary raw material of product using the siliceous of waste and old abandonment, alleviates waste and scrap harm caused by environment；Key is to improve the service life of phosphate High-Alumina product, has saved the production cost using unit, provides strong technical support to exploitation potential customers.

Description

The production method of phosphate high-alumina brick
Technical field
The present invention relates to the production method of refractory material, more particularly, to one kind for electric furnace furnace roof, cement kiln firing section, The production method of the phosphate high-alumina brick of power boiler burning room etc..
Background technique
The early 1990s in last century, phosphate products (phosphoric acid block salt) are very fast in China's development, especially in electric furnace Furnace roof, cement kiln and power boiler burning room etc. using more.
The phosphate high alumina products that China uses at present is substantially using high aluminium material+phosphoric acid solution preparation, exists Refractoriness under load is low, wear-resisting property is general, extremely cold very hot number is low and creep is higher, and production cost is higher.It is main Material source is China Henan, Shanxi area.The silica brick of coke-oven plant is then to take on the spot to cover the waste and scrap after using simultaneously It buries, is handled, this not only causes a large amount of wasting of resources, simultaneously because handling a large amount of waste and old material by the way of burying Material, also will cause the adverse consequences such as land wastage and underground water pollution, very big to environmental hazard.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of phosphate high-alumina brick, using waste and old siliceous second-hand brick as master Additive is wanted, production cost is greatly reduced.
To achieve the above object, the present invention can take following technical proposals:
The production method of phosphate high-alumina brick of the present invention, is by Al2O3The bauxite chamotte of > 85%, siliceous second-hand brick, Silicon powder is raw material, is prepared using the phosphate dihydrogen aluminum solution of concentration 55% as bonding agent according to following weight per distribution ratio and method It forms:
Raw material proportioning:
Al2O3The bauxite chamotte 93% of > 85%, in which: 5-8mm particulate material 35%；3-5mm particulate material 20%；0-3mm particle Material 15%, partial size≤0.074mm fine powder 23%；
The siliceous second-hand brick fine powder 6% of partial size≤0.074mm；
Silicon powder 1%；
Preparation method: by the above-mentioned bauxite chamotte weighed in proportion, siliceous second-hand brick fine powder and silicon powder and appropriate combination Agent phosphate dihydrogen aluminum solution is added in forced action type batch mixer together and stirs evenly, and ageing mixture is kneaded 15min again again after 4 hours, uses 400 tons of press machines are pressed into adobe, then enter to bake 72 hours in 600 DEG C of low temperature kilns and obtain finished product phosphate high-alumina brick.
The siliceous second-hand brick is the old siliceous brick of discarding removed after reusing, and principal crystalline phase is phosphorus quartz.Silicon The physical and chemical index of matter second-hand brick will meet SiO2≥96%；Al2O3≤0.5%；Fe2O3≤0.7%；CaO≥2.1%；R2O≤0.1%。
The physical and chemical index of finished product phosphate high-alumina brick is following (compared with national standard JC/T350-2013 phosphate high alumina products):
Although chemical index is slightly relatively low, physical index then improves a lot；Compared with conventional brick body, applied in kiln In the positions such as furnace furnace roof, cement kiln firing section, power boiler burning room, it can improve service life significantly.Specifically, it is used in On electric furnace furnace roof, it can be used 300 times (130 times former)；With in cement kiln firing section, nine months (phosphate originally can be used The service life of high-alumina brick is six months)；5 years (originally power boiler burnings can be used used in positions such as power boiler burning rooms The resistance to material in room is used only 3 years).
The present invention is using waste and old silica brick as secondary raw material, because principal crystalline phase of the waste and old silica brick after production and use is Phosphorus quartz, and contain a certain amount of milk of lime CaO, using silicon powder as inducer, effective use brick body is in applied at elevated temperature Thermal energy promotes the Al in brick body institutional framework2O3With the SiO in waste and old silica brick2Reaction, forms the mullite crystalline phase of acicular texture, Wearability, high RUL, high extremely cold very hot property and the low croop property that product is improved by indenting needle-shaped crystal phase structure, enable useless Old silica brick material changes out strong new life.
The present invention makes Al in brick body matrix using accurately raw material proportioning and gradation2O3And SiO2Reach ideal at high temperature Balance each other, that is, the finished product phosphate high-alumina brick prepared can promote to be formed completely in institutional framework under the conditions of applied at elevated temperature come Stone, due to mullite 3AI2O3•2SiO2The binary solid solution stable under normal pressure in binary system belongs to orthorhombic system, forms column Or needle-shaped crystal structure, about 1910 DEG C of melting temperature, fusing point is 1850 DEG C, so finished product brick body just has higher loading Softening temperature, higher high temperature resistance to compression and flexural strength, stronger wear-resisting property and rapid heat cycle performance, lower creep properties Energy.
The present invention not only solves the place of part waste and scrap using the siliceous as the secondary raw material of product of waste and old abandonment Reason problem alleviates waste and scrap harm caused by environment；Key is to improve the service life of phosphate High-Alumina product, The production cost using unit has been saved, strong technical support is provided to exploitation potential customers.
Specific embodiment
More detailed explanation is done to the present invention below by specific embodiment, in order to the reason of those skilled in the art Solution.
Embodiment 1
A kind of production method of phosphate high-alumina brick, is by Al2O3The bauxite chamotte of > 85% is removed after reuse Old siliceous brick, silicon powder are discarded as raw material, is matched using the phosphate dihydrogen aluminum solution of concentration 55% as bonding agent according to following weight percentage Than being prepared with method:
Raw material proportioning:
Al2O3The bauxite chamotte 93% of > 85%, in which: 5-8mm particulate material 35%；3-5mm particulate material 20%；0-3mm particle Material 15%, partial size≤0.074mm fine powder 23%；
The siliceous second-hand brick fine powder 6% of partial size≤0.074mm；
Silicon powder 1%；
Preparation method: by the above-mentioned bauxite chamotte weighed in proportion, siliceous second-hand brick fine powder and silicon powder and suitable knot Mixture phosphate dihydrogen aluminum solution (concentration 55%, additive amount are the 8% of material total amount) is added in forced action type batch mixer together to be stirred into Pug, ageing mixture were kneaded 15min after 4 hours again again, were pressed into adobe with 400 tons of press machines, then entered in 600 DEG C of low temperature kilns It bakes 72 hours and obtains finished product phosphate high-alumina brick.
Siliceous second-hand brick used in the present invention will be using the brick body by reusing, the siliceous brick body after Reusability Its crystal phase tissue stabilization, reversible crystal phase conversion are substantially zeroed.

Claims (3)

1. a kind of production method of phosphate high-alumina brick, it is characterised in that: be by Al2O3The bauxite chamotte of > 85%, it is siliceous Second-hand brick, silicon powder are raw material, are bonding agent according to following weight per distribution ratio and method using the phosphate dihydrogen aluminum solution of concentration 55% It is prepared:
Raw material proportioning:
Al2O3The bauxite chamotte 93% of > 85%, in which: 5-8mm particulate material 35%；3-5mm particulate material 20%；0-3mm particulate material 15%, partial size≤0.074mm fine powder 23%；
The siliceous second-hand brick fine powder 6% of partial size≤0.074mm；
Silicon powder 1%；
Preparation method: by the above-mentioned bauxite chamotte weighed in proportion, siliceous second-hand brick fine powder and silicon powder and appropriate combination Agent phosphate dihydrogen aluminum solution is added in forced action type batch mixer together and stirs evenly, and ageing mixture is kneaded 15min again again after 4 hours, uses 400 tons of press machines are pressed into adobe, then enter to bake 72 hours in 600 DEG C of low temperature kilns and obtain finished product phosphate high-alumina brick.
2. the production method of phosphate high-alumina brick according to claim 1, it is characterised in that: the siliceous second-hand brick is to pass through That removes after reuse discards old siliceous brick, and principal crystalline phase is phosphorus quartz.
3. the production method of phosphate high-alumina brick according to claim 1, it is characterised in that: the physics and chemistry of the siliceous second-hand brick Index is SiO2≥96%；Al2O3≤0.5%；Fe2O3≤0.7%；CaO≥2.1%；R2O≤0.1%。
CN201811569526.6A 2018-12-21 2018-12-21 The production method of phosphate high-alumina brick Pending CN109437935A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110407592A (en) * 2019-08-09 2019-11-05 洛阳特耐窑炉工程有限公司 A kind of formula and preparation method thereof of aluminum amorphous refractory
CN113754456A (en) * 2021-11-09 2021-12-07 长沙中瓷新材料科技有限公司 Mullite-based ceramic material and preparation method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110407592A (en) * 2019-08-09 2019-11-05 洛阳特耐窑炉工程有限公司 A kind of formula and preparation method thereof of aluminum amorphous refractory
CN113754456A (en) * 2021-11-09 2021-12-07 长沙中瓷新材料科技有限公司 Mullite-based ceramic material and preparation method thereof
CN113754456B (en) * 2021-11-09 2022-03-08 长沙中瓷新材料科技有限公司 Mullite-based ceramic material and preparation method thereof

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Application publication date: 20190308