CN108675810A - A kind of production method of silica refractory - Google Patents
A kind of production method of silica refractory Download PDFInfo
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- CN108675810A CN108675810A CN201810768457.5A CN201810768457A CN108675810A CN 108675810 A CN108675810 A CN 108675810A CN 201810768457 A CN201810768457 A CN 201810768457A CN 108675810 A CN108675810 A CN 108675810A
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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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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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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
- C04B2235/3217—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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
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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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—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
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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
- C04B2235/96—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
- C04B2235/9692—Acid, alkali or halogen resistance
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Abstract
The invention discloses a kind of production method of silica refractory, including 200 230 parts of clay brick, 35 38 parts of silicon carbide, 20 25 parts of the mixture of 40 45 parts of aluminium oxide, 50 58 parts of chromium oxide, POLYPROPYLENE GLYCOL+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30 40 parts of water, includes the following steps：Clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；It weighs according to proportioning；The material of proportioning is stirred mixing；Ageing mixture is molded；Material after molding is dried；Material after shaping and drying is sintered.Aluminium oxide and chromium oxide is added in the present invention in the feed so that refractory material is partial to neutrality, the corrosion resistance with higher antiacid alkali and salt, under the weak acid or mild alkaline conditions suitable for chemical field.
Description
Technical field
The present invention relates to technical field of fire resistant material production, more particularly to a kind of production method of silica refractory.
Background technology
Silica refractory silicon oxide-containing belongs to acid refractory in 93% or more refractory material.Mainly there is firing
Common silica brick, the high-purity silica brick of high density, containing chrome silica brick, fused quartz product and unburned brick, siliceous smash material etc..With preferable lotus
Weight softening temperature.Under high temperature acid resistance slag corrode, but mostly with basic clinker chemically reactive.There is the silica fire resistant of industrial value
Material is mainly crystalloid type quartz, such as α and β quartz, tridymite and cristobalite.
In chemical field application, often work under weak acid or weakly alkaline environment, it is larger to the corrosivity of refractory material.
Invention content
The main purpose of the present invention is to provide a kind of production methods of silica refractory, can effectively solve background skill
The problems in art.
To achieve the above object, the technical solution that the present invention takes is：
A kind of production method of silica refractory, including 200-230 parts of clay brick, 35-38 parts of silicon carbide, aluminium oxide
40-45 parts, 50-58 parts of chromium oxide, 20-25 parts of the mixture of POLYPROPYLENE GLYCOL+wooden calcium sulfonate+polyacrylic acid or its sodium salt, water
30-40 parts.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Preferably, clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, so
After start pulverizer, pulverizer crushes clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, is crushed into powder granular.
Preferably, it weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Preferably, the material after weighing uniformly is put into blender, then opens blender, blender carries out material
It is mixed so that each material is uniformly mixed.
Preferably, 8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Preferably, ageing mixture material after molding is dried to 5 hours at a temperature of 60 DEG C, then using 100 DEG C dry 5
A hour.
Preferably, the material after drying is put by feed inlet in sintering furnace, through 1350+20 DEG C of high temperature in sintering furnace
20 hours are calcined, a kind of silica refractory is obtained.
Compared with prior art, the present invention has the advantages that：Aluminium oxide and chromium oxide are added in the feed so that
Refractory material is partial to neutrality, the corrosion resistance with higher antiacid alkali and salt, the weak acid or weak suitable for chemical field
Under alkali environment.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
Embodiment one
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 40-45 parts of aluminium oxide, 50-58 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 60 DEG C, then using 100 DEG C of dry 5 hours.
Material after drying is put by feed inlet in sintering furnace, through 1350+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory.
Embodiment two
A kind of production method of silica refractory proposed by the present invention, includes the following steps：
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 30-35 parts of aluminium oxide, 40-46 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 60 DEG C, then using 100 DEG C of dry 5 hours.
Material after drying is put by feed inlet in sintering furnace, through 1350+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory.Reduce the dosage of aluminium oxide and chromium oxide so that refractory material slant acidity.
Embodiment three
A kind of production method of silica refractory proposed by the present invention, includes the following steps：
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 50-55 parts of aluminium oxide, 60-65 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 60 DEG C, then using 100 DEG C of dry 5 hours.
Material after drying is put by feed inlet in sintering furnace, through 1350+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory, increases the dosage of aluminium oxide and chromium oxide so that refractory material is biased to neutral.
Example IV
A kind of production method of silica refractory proposed by the present invention, includes the following steps：
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 40-45 parts of aluminium oxide, 50-58 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 60 DEG C, then using 100 DEG C of dry 6 hours.
Material after drying is put by feed inlet in sintering furnace, through 1250+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory.
Embodiment five
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 40-45 parts of aluminium oxide, 50-58 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 65 DEG C, then using 100 DEG C of dry 5 hours.
Material after drying is put by feed inlet in sintering furnace, through 1250+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory.
Embodiment six
Including 200-230 parts of clay brick, 35-38 parts of silicon carbide, 40-45 parts of aluminium oxide, 50-58 parts of chromium oxide, polypropylene
20-25 parts of the mixture of alcohol+wooden calcium sulfonate+polyacrylic acid or its sodium salt, 30-40 parts of water.
Include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
Clay brick, silicon carbide, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, are then started
Pulverizer, pulverizer crush clay brick, silicon carbide, aluminium oxide, oxidation Cr materials, are crushed into powder granular.
It weighs to the granular material proportioning described in accordance with the claim 1 after crushing.
Material after weighing uniformly is put into blender, blender is then opened, blender carries out mixing to material and stirs
It mixes so that each material is uniformly mixed.
8 hour moldings of ageing mixture are carried out after batch mixing is uniform.
Ageing mixture material after molding is dried into 5 hours at a temperature of 70 DEG C, then using 100 DEG C of dry 5 hours.
Material after drying is put by feed inlet in sintering furnace, through 1350+20 DEG C of high-temperature calcination 20 in sintering furnace
A hour obtains a kind of silica refractory.
A kind of production method of silica refractory proposed by the present invention is added aluminium oxide and chromium oxide, makes in the feed
Refractory material is partial to neutrality, the corrosion resistance with higher antiacid alkali and salt, weak acid suitable for chemical field or
Under mild alkaline conditions.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of silica refractory, which is characterized in that including 200-230 parts of clay brick, 35-38 parts of silicon carbide, aluminium oxide 40-
45 parts, 50-58 parts of chromium oxide, 20-25 parts of the mixture of POLYPROPYLENE GLYCOL+wooden calcium sulfonate+polyacrylic acid or its sodium salt, water 30-
40 parts.
2. a kind of production method of silica refractory, which is characterized in that include the following steps：
S1. clay brick, silicon carbide, aluminium oxide, chromium oxide are ground；
S2. it weighs according to proportioning；
S3. the material of proportioning is stirred mixing；
S4. ageing mixture is molded；
S5. material after molding is dried；
S6. the material after shaping and drying is sintered.
3. a kind of production method of silica refractory according to claim 2, it is characterised in that：By clay brick, carbonization
Silicon, aluminium oxide, oxidation Cr materials are successively put into from feed inlet in pulverizer, then start pulverizer, pulverizer to clay brick,
Silicon carbide, aluminium oxide, oxidation Cr materials crush, and are crushed into powder granular.
4. a kind of production method of silica refractory according to claim 2, it is characterised in that：To the powdery after crushing
Material proportioning described in accordance with the claim 1 is weighed.
5. a kind of production method of silica refractory according to claim 2, it is characterised in that：By the material after weighing
It is uniformly put into blender, then opens blender, material is mixed in blender so that each material is uniformly mixed.
6. a kind of production method of silica refractory according to claim 2, it is characterised in that：It is uniformly laggard through batch mixing
The 8 hour moldings of row ageing mixture.
7. a kind of production method of silica refractory according to claim 2, it is characterised in that：Ageing mixture is after molding
Material dry 5 hours at a temperature of 60 DEG C, then using 100 DEG C of dry 5 hours.
8. a kind of production method of silica refractory according to claim 2, it is characterised in that：By the material after drying
It is put into sintering furnace by feed inlet, through 20 hours of 1350+20 DEG C of high-temperature calcination in sintering furnace, obtains a kind of silica fire resistant
Material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111704444A (en) * | 2020-06-28 | 2020-09-25 | 无锡市强亚耐火材料有限公司 | Corrosion-resistant and anti-scouring refractory material and preparation process thereof |
| CN112250457A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material for factory |
| CN116496077A (en) * | 2023-06-27 | 2023-07-28 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
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| CN111704444A (en) * | 2020-06-28 | 2020-09-25 | 无锡市强亚耐火材料有限公司 | Corrosion-resistant and anti-scouring refractory material and preparation process thereof |
| CN112250457A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material for factory |
| CN116496077A (en) * | 2023-06-27 | 2023-07-28 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
| CN116496077B (en) * | 2023-06-27 | 2023-08-29 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
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Application publication date: 20181019 |