BR112021015523A2 - REFRACTORY MASSES AND BINDING AGENT FOR THEM, PROCESS FOR THEIR PRODUCTION AND USE - Google Patents
REFRACTORY MASSES AND BINDING AGENT FOR THEM, PROCESS FOR THEIR PRODUCTION AND USE Download PDFInfo
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- BR112021015523A2 BR112021015523A2 BR112021015523-6A BR112021015523A BR112021015523A2 BR 112021015523 A2 BR112021015523 A2 BR 112021015523A2 BR 112021015523 A BR112021015523 A BR 112021015523A BR 112021015523 A2 BR112021015523 A2 BR 112021015523A2
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- weight
- sio2
- binder
- refractory
- micronized
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- 239000011230 binding agent Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 53
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims description 18
- 229910052681 coesite Inorganic materials 0.000 claims description 16
- 229910052906 cristobalite Inorganic materials 0.000 claims description 16
- 229910052682 stishovite Inorganic materials 0.000 claims description 16
- 229910052905 tridymite Inorganic materials 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000000499 gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- -1 chamotte Inorganic materials 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims 2
- 239000003446 ligand Substances 0.000 claims 2
- 229910052849 andalusite Inorganic materials 0.000 claims 1
- 229910001570 bauxite Inorganic materials 0.000 claims 1
- 239000007767 bonding agent Substances 0.000 claims 1
- 239000010431 corundum Substances 0.000 claims 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 1
- 235000012245 magnesium oxide Nutrition 0.000 claims 1
- 229910003465 moissanite Inorganic materials 0.000 claims 1
- 229910052863 mullite Inorganic materials 0.000 claims 1
- 229910052609 olivine Inorganic materials 0.000 claims 1
- 239000010450 olivine Substances 0.000 claims 1
- 239000010453 quartz Substances 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 239000000470 constituent Substances 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
Classifications
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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
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- 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
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- C04B30/00—Compositions for artificial stone, not containing binders
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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
- C04B35/01—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
- C04B35/10—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 aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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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
- C04B35/01—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
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- C04B35/624—Sol-gel processing
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- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
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- 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
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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
- C04B2235/32—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
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- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/52—Constituents or additives characterised by their shapes
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Abstract
massas refratárias e agente de ligação para asmesmas, processo para sua produção e utilização. a presente invenção refere-se a uma massa refratária sem conformação, em particular a uma massa de fundição, massa de borrifo e/ou massa de escoamento livre, compreendendo um sistema aglutinante formado por adição de água e um ligante de sio2 amorfo, micronizado, seco, como o único ligante, que é misturado em uma proporção = 1% em peso da massa total com os constituintes sólidos a serem fixados e, após adição de 1-30% em peso de água forma o sistema ligante. a invenção também se refere a um processo para produzir massas refratárias e um uso de dióxido de silício amorfo microcristalino na produção de massas refratárias.refractory masses and binding agent for them, process for their production and use. The present invention relates to a refractory mass without forming, in particular to a casting mass, spray mass and/or free-flowing mass, comprising a binder system formed by the addition of water and an amorphous, micronized Si2 binder, dry, as the only binder, which is mixed in a proportion = 1% by weight of the total mass with the solid constituents to be fixed and, after addition of 1-30% by weight of water, forms the binder system. The invention also relates to a process for producing refractory masses and a use of microcrystalline amorphous silicon dioxide in the production of refractory masses.
Description
Relatório Descritivo da Patente de Invenção para “MASSAS REFRATÁRIAS E AGENTE DE LIGAÇÃO PARA AS MESMAS, PROCESSO PARA SUA PRODUÇÃO E UTILIZAÇÃO”.Descriptive Report of the Patent of Invention for “REFRACTORY MASSES AND BINDING AGENT FOR THEM, PROCESS FOR THEIR PRODUCTION AND USE”.
[001] A presente invenção refere-se a uma massa refratária, a um agente de ligação para a mesma, a um processo para produção de uma massa refratária e a um sistema de ligação e a um uso de dióxido de silício amorfo micronizado de acordo com o preâmbulo das reivindicações independentes.[001] The present invention relates to a refractory mass, a binding agent therefor, a process for producing a refractory mass and a binding system and a use of micronized amorphous silicon dioxide in accordance with with the preamble of independent claims.
[002] Cimentos de alta alumina são ligantes convencionais mais frequentemente utilizados em produtos refratários não conformados. A ligação por aluminatos de cálcio contidos nesses cimentos é ativada por adição de água.[002] High alumina cements are conventional binders most often used in unformed refractory products. The binding by calcium aluminates contained in these cements is activated by the addition of water.
[003] Nos últimos anos, no entanto, as soluções de sol de sílica têm sido cada vez mais usadas como ligantes. As soluções de sol de sílica são dispersões coloidais aquosas feitas de partículas de dióxido de silício amorfo em nanoescala. Os produtos refratários ligados por meio deles se caracterizam por boa resistência a álcalis e a ácidos em comparação com massas ligadas com cimento.[003] In recent years, however, silica sol solutions have been increasingly used as binders. Silica sol solutions are aqueous colloidal dispersions made of nanoscale amorphous silicon dioxide particles. Refractory products bonded through them are characterized by good resistance to alkali and acids compared to cement-bonded masses.
[004] Em comparação com as massas ligadas com cimento, os materiais ligados com sol de sílica podem ser aquecidos rapidamente devido à falta de fases de hidrato, o que leva a uma significativa economia de energia e, portanto, de custos.[004] Compared to cement-bonded masses, silica sol-bonded materials can be heated quickly due to the lack of hydrate phases, which leads to significant energy and therefore cost savings.
[005] Uma desvantagem desses ligantes, no entanto, é que eles devem ser armazenados em recipientes separados, protegidos contra geada e luz. Devido à sensibilidade a geada, dispositivos de aquecimento especiais devem ser instalados.[005] A disadvantage of these binders, however, is that they must be stored in separate containers, protected from frost and light. Due to frost sensitivity, special heating devices must be installed.
[006] Alternativamente, o dióxido de silício amorfo micronizado pode ser misturado como um pó seco com os outros constituintes da massa, de modo que um gel de sílica é formado quando água é adicionada à massa total.[006] Alternatively, the micronized amorphous silicon dioxide can be mixed as a dry powder with the other constituents of the dough, so that a silica gel is formed when water is added to the total dough.
[007] Uma argamassa refratária é conhecida a partir da DE 41 09 916 A1, em que uma mistura compreendendo fosfato, argila e lignossulfonato é usada como o agente de ligação.[007] A refractory mortar is known from DE 41 09 916 A1, in which a mixture comprising phosphate, clay and lignosulfonate is used as the binding agent.
[008] Na DE 10 2014 019 351 A1 são utilizados alcatrão, piche, e resina como o principal componente ligante.[008] In DE 10 2014 019 351 A1 tar, pitch, and resin are used as the main binding component.
[009] Os sistemas de ligação das DE 27 39 767 A1, EP 0 842 910 A2 e DE 30 02 763 A1 se baseiam em argilas com adição de um fosfato ácido / ácido clorídrico, assim como, em sol de vidro / sílica líquida.[009] The binding systems of DE 27 39 767 A1, EP 0 842 910 A2 and DE 30 02 763 A1 are based on clays with the addition of an acid phosphate / hydrochloric acid, as well as on glass sol / liquid silica.
[0010] Com base nisso, a invenção tem como objetivo criar uma massa refratária aperfeiçoada com um sistema de ligação aprimorado, um processo para a respectiva produção e um uso de dióxido de silício amorfo micronizado de acordo com o preâmbulo das reivindicações independentes.[0010] Based on this, the invention aims to create an improved refractory mass with an improved bonding system, a process for the respective production and a use of micronized amorphous silicon dioxide in accordance with the preamble of the independent claims.
[0011] Este objetivo é alcançado de acordo com as características das reivindicações independentes.[0011] This objective is achieved in accordance with the characteristics of the independent claims.
[0012] A invenção propõe pela primeira vez o uso de pequenas quantidades (em particular ≤ 1% em peso ou 0,1-1% em peso) de um dióxido de silício amorfo micronizado como o único ligante para a formação de ligações em materiais refratários não conformados.[0012] The invention proposes for the first time the use of small amounts (in particular ≤ 1% by weight or 0.1-1% by weight) of a micronized amorphous silicon dioxide as the only binder for forming bonds in materials non-conforming refractories.
[0013] Ao se utilizar concreto refratário convencional, no qual a presença de fases de cimento (aluminatos de cálcio) pode ter um efeito disruptivo (por exemplo, em coadjuvantes de queima à base de SiC), é vantajoso usar um sistema de SiO2 micronizado em vez de fases de cimento à base de água para formação de ligantes. Isto pode ser feito, por exemplo, usando soluções de sol de sílica. Para tanto, a massa a ser ligada é misturada com a solução de sol de sílica, processada e deixada endurecer. Alternativamente, o SiO2 amorfo micronizado pode ser misturado como um pó seco com os outros constituintes da massa, de modo que se forme um gel de sílica na massa quando a massa total for misturada com água. A vantagem deste procedimento é que nenhuma solução de sol de sílica, cuja reatividade é influenciada por processos de envelhecimento e condições de armazenamento, deve ser fornecida separadamente.[0013] When using conventional refractory concrete, in which the presence of cement phases (calcium aluminates) can have a disruptive effect (for example, in SiC-based firing aids), it is advantageous to use a micronized SiO2 system instead of water-based cement phases for binder formation. This can be done, for example, using silica sol solutions. For this, the mass to be bonded is mixed with the silica sol solution, processed and allowed to harden. Alternatively, the micronized amorphous SiO2 can be mixed as a dry powder with the other dough constituents so that a silica gel forms in the dough when the whole dough is mixed with water. The advantage of this procedure is that no silica sol solution, whose reactivity is influenced by aging processes and storage conditions, must be supplied separately.
[0014] De acordo com a invenção, ao dispersar óxido de silício amorfo micronizado sob a ação de água, é gerado um sistema de ligação que pode ser usado para formar ligações em produtos refratários, não conformados.[0014] According to the invention, by dispersing micronized amorphous silicon oxide under the action of water, a bonding system is generated that can be used to form bonds in refractory, unformed products.
[0015] O SiO2 micronizado usado para a formação da ligação é um produto que pode ser obtido como um precipitado amorfo por meio de uma reação de precipitação e tem uma pureza de aproximadamente 90- 99,9% em peso (no estado seco), um tamanho médio de grão na faixa do micrômetro (1-50 µm, em particular 1-10 µm, 1-20 µm, 1-30 µm ou 1-40 µm) e uma área de superfície específica de aproximadamente 50- 350 m2/g, em particular 100-350 m2/g, 200 -350 m2/g ou 250-300 m2/g.[0015] The micronized SiO2 used for bond formation is a product that can be obtained as an amorphous precipitate by means of a precipitation reaction and has a purity of approximately 90-99.9% by weight (in the dry state), an average grain size in the micrometer range (1-50 µm, in particular 1-10 µm, 1-20 µm, 1-30 µm or 1-40 µm) and a specific surface area of approximately 50-350 m2/ g, in particular 100-350 m2 /g, 200 -350 m2 /g or 250-300 m2 /g.
[0016] A grande área de superfície específica do material causa uma hidratação rápida quando o SiO2 amorfo micronizado é misturado com água para formar um gel de sílica. Os géis de sílica contêm unidades (H2SiO5)x, que são mantidas juntas por ligações de Van-der- Waals e ligações de pontes de hidrogênio e entre as quais, podem ser incluídas partículas de outra composição química e diferentes tamanhos de grãos. Quando o gel seca, resta uma estrutura de SiO2, que continua a envolver os grãos introduzidos.[0016] The material's large specific surface area causes rapid hydration when micronized amorphous SiO2 is mixed with water to form a silica gel. Silica gels contain (H2SiO5)x units, which are held together by Van-der-Waals bonds and hydrogen bonding bonds, between which particles of different chemical composition and different grain sizes can be included. When the gel dries, a SiO2 structure remains, which continues to envelop the introduced grains.
[0017] O processo de acordo com a invenção se refere à produção de um sistema de ligação de SiO2 empregando um agente de ligação de SiO2 seco que mistura a massa total em uma proporção de 1% em peso, em particular 0,1-1% em peso, com os componentes sólidos a serem ligados e após a adição de cerca de 1-30% em peso, em particular 1-10% em peso, 10-30% em peso, 15-30% em peso ou 20- 30% em peso de água, é usado para formar ligações.[0017] The process according to the invention relates to the production of a SiO2 binding system employing a dry SiO2 binding agent that mixes the total mass in a proportion of 1% by weight, in particular 0.1-1 % by weight, with the solid components being bound and after addition of about 1-30% by weight, in particular 1-10% by weight, 10-30% by weight, 15-30% by weight or 20- 30% by weight of water is used to form bonds.
[0018] A velocidade de hidratação do SiO2, a coagulação para formar o gel de sílica e a desidratação subsequente do gel depende da temperatura, do valor do pH, da composição do material e da espessura do material.[0018] The rate of hydration of SiO2, coagulation to form silica gel and subsequent dehydration of the gel depends on temperature, pH value, material composition and material thickness.
[0019] No entanto, o sistema de ligação à base de SiO2 micronizado tem uma dependência de reação significativamente menor em relação à temperatura e à composição química do que os sistemas de ligação à base de cimento. A formação de ligação pode, portanto, ser usada para a produção de um grande número de massas refratárias de diferentes composições de matéria-prima tal como spray, vibração, autofluxo (Self flow) ou massa fundida.[0019] However, the micronized SiO2-based bonding system has a significantly lower reaction dependence on temperature and chemical composition than cement-based bonding systems. Bonding can therefore be used for the production of a large number of refractory masses from different raw material compositions such as spray, vibration, self flow or melt.
[0020] Os materiais refratários produzidos de acordo com a invenção, após terem sido vazados em cilindros e secos a 110 °C, alternativamente 100-150 °C, 105-125 °C, geralmente têm uma resistência à compressão > 15 MPa. Devido à menor tendência de espalhamento dos géis de sílica em comparação com as fases de aluminato de cálcio hidratado, os produtos feitos com ligantes de SiO 2 micronizados oferecem a vantagem de poderem ser aquecidos mais rapidamente sem danos.[0020] The refractory materials produced according to the invention, after being cast into cylinders and dried at 110°C, alternatively 100-150°C, 105-125°C, generally have a compressive strength > 15 MPa. Due to the lower scattering tendency of silica gels compared to hydrated calcium aluminate phases, products made with micronized SiO 2 binders offer the advantage that they can be heated more quickly without damage.
[0021] Exemplo 1 para massas refratárias (dado em % em peso): Óxido de alumínio (0 – 6 mm) 80 - 95 % Espinélio (0 – 3 mm) 5 – 20 % MgO mais fino <1 %, em particular 0,1 % até 1 % SiO2 amorfo micronizado <1 %, em particular 0,1 % até 1 % Polieletrólito sintético <1 %, em particular 0,1 % até 1 % Fibras de PE <1 %, em particular 0,1 % até 1 %[0021] Example 1 for refractory masses (given in % by weight): Aluminum oxide (0 – 6 mm) 80 - 95 % Spinel (0 – 3 mm) 5 – 20 % finer MgO <1 %, in particular 0 .1 % to 1 % Micronised amorphous SiO2 <1 %, in particular 0.1 % to 1 % Synthetic polyelectrolyte <1 %, in particular 0.1 % to 1 % PE fibers <1 %, in particular 0.1 % up to 1%
[0022] Exemplo 2 para massas refratárias (dado em % em peso): Óxido de alumínio (0 – 6 mm) 90 - 99 % MgO mais fino <1 %, em particular 0,1 % até 1 % SiO2 amorfo micronizado <1 %, em particular 0,1 % até 1 % Polieletrólito sintético <1 %, em particular 0,1 % até 1 % Fibras de PE <1 %, em particular 0,1 % até 1 %[0022] Example 2 for refractory masses (given in % by weight): Aluminum oxide (0 – 6 mm) 90 - 99 % finer MgO <1 %, in particular 0.1 % to 1 % micronized amorphous SiO2 <1 %, in particular 0.1 % to 1 % Synthetic polyelectrolyte <1 %, in particular 0.1 % to 1 % PE fibers <1 %, in particular 0.1 % to 1 %
[0023] Mais explicações emergem das reivindicações secundárias.[0023] Further explanation emerges from the secondary claims.
Claims (13)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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DE102019001214.3 | 2019-02-20 | ||
DE102019001214.3A DE102019001214A1 (en) | 2019-02-20 | 2019-02-20 | Refractory compounds and binders therefor, processes for their production and use |
DE202019003290.8 | 2019-08-07 | ||
DE202019003290 | 2019-08-07 | ||
PCT/EP2020/054551 WO2020169772A2 (en) | 2019-02-20 | 2020-02-20 | Refractory compound and binder therefor, method for the production and use thereof |
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BR112021015523A2 true BR112021015523A2 (en) | 2021-10-05 |
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BR112021015523-6A BR112021015523A2 (en) | 2019-02-20 | 2020-02-20 | REFRACTORY MASSES AND BINDING AGENT FOR THEM, PROCESS FOR THEIR PRODUCTION AND USE |
Country Status (5)
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EP (1) | EP3927673A2 (en) |
BR (1) | BR112021015523A2 (en) |
MX (1) | MX2021009952A (en) |
WO (1) | WO2020169772A2 (en) |
ZA (1) | ZA202106305B (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US4093470A (en) | 1976-10-20 | 1978-06-06 | Combustion Engineering, Inc. | Alumina refractories |
DE3002763A1 (en) * | 1980-01-26 | 1981-07-30 | Dörentruper Sand-und Thonwerke GmbH, 4926 Dörentrup | Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica |
JPH054874A (en) | 1990-03-26 | 1993-01-14 | Norton Co | Fire resisting mortar composition |
US5494267A (en) * | 1994-07-26 | 1996-02-27 | Magneco/Metrel, Inc. | Pumpable casting composition and method of use |
EP0842910A3 (en) | 1996-11-14 | 1998-12-16 | Bayerisches Zentrum für Angewandte Energieforschung e.V. ZAE Bayern | Binder based on waterglass solution, process for its preparation and its utilisation |
US6268018B1 (en) * | 1999-02-09 | 2001-07-31 | Harbison-Walker Refractories Company | Method of applying a non-slumping pumpable castable high purity silica composition |
US8505335B2 (en) * | 2007-06-19 | 2013-08-13 | Magneco/Metrel, Inc. | Refractoy composition for glass melting furnaces |
DE102014019351A1 (en) | 2014-12-22 | 2016-06-23 | Refratechnik Holding Gmbh | Refractory products and their use |
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2020
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- 2020-02-20 EP EP20709506.8A patent/EP3927673A2/en active Pending
- 2020-02-20 MX MX2021009952A patent/MX2021009952A/en unknown
- 2020-02-20 BR BR112021015523-6A patent/BR112021015523A2/en unknown
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EP3927673A2 (en) | 2021-12-29 |
WO2020169772A3 (en) | 2020-11-12 |
MX2021009952A (en) | 2021-10-13 |
ZA202106305B (en) | 2023-12-20 |
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