CN113979762A - Fire-resistant fire clay and preparation method and application thereof - Google Patents
Fire-resistant fire clay and preparation method and application thereof Download PDFInfo
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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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- 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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- 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
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
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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
- C04B2235/34—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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to the technical field of metallurgy, in particular to refractory fire clay and a preparation method and application thereof. The fire-resistant fire clay comprises the following raw materials in parts by weight: 35-50 parts of high-alumina refractory dedusting ash; 25-35 parts of bauxite fine powder; 15-20 parts of clay; 0.5-1 part of a thickening agent; 7-8.2 parts of a binding agent; 0.5-1 part of dispersing agent. The refractory fire clay is mainly prepared from refractory dedusting ash collected by an automatic production line of unshaped refractory of a blast furnace tapping channel, and is high-temperature resistant, good in usability, environment-friendly and low in manufacturing cost by a compounding technology of the refractory dedusting ash, bauxite powder, clay and additives, and is mainly used for shaped refractory brick stacking. The fire-resistant fire clay has the effects of high temperature resistance, good usability, environmental protection and lower manufacturing cost, improves the service life of products, saves resources to a certain extent, recycles solid wastes and reduces the cost.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to refractory fire clay and a preparation method and application thereof.
Background
In recent years, with the rapid development of the metallurgical industry, the demand and consumption of refractory materials are increasing. However, the resources available for refractory materials are becoming smaller and smaller, and therefore, technologists are constantly working on developing secondary resources available for refractory materials.
The refractory powder in the existing refractory fire clay is usually ferrovanadium slag, while the ferrovanadium slag is usually unstable in chemical composition, wherein SiO is2、Fe2O3The content is high, and after the high-temperature-resistant medium has the adverse effects of easy spalling, loose structure, low strength and the like.
Under the current situation, the green sustainable development has become a necessary trend. Therefore, there is a need to develop a fire-resistant fire clay which is easily manufactured, convenient to use, environment-friendly and low in manufacturing cost through resource recycling. The technical problem which needs to be solved by the invention is that a large amount of fly ash can be generated in the production of the indefinite-form refractory, and whether the refractory fly ash collected by the automatic production line of the indefinite-form refractory of the blast furnace tapping channel can be used as a material for applying to the refractory mortar.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention aims to provide a refractory fire clay, which is prepared by using refractory dedusting ash collected from an automatic production line of an unshaped refractory material of a blast furnace tapping channel as a main material and compounding the main material with bauxite powder, clay and an additive to obtain the refractory fire clay with characteristics of high temperature resistance, small shrinkage, good usability, environmental protection and low cost, and is used for solving the problems in the prior art.
In order to achieve the above and other related objects, in one aspect, the present invention provides a fire-resistant fire clay, which comprises the following components in parts by weight:
in some embodiments of the invention, the high aluminumThe particle size of the refractory dust removal ash is 180 meshes-0.5 mm; the screening content of the interval is more than or equal to 90 wt%; al (Al)2O3The content is more than or equal to 60 wt%; fe2O3The content is less than or equal to 5.0 wt%; SiC is more than or equal to 30 wt%.
In some embodiments of the invention, the alumina fine powder has a particle size of 80 mesh to 100 mesh; the screening content of the interval is more than or equal to 90 wt%; al (Al)2O3The content is more than or equal to 80 wt%; fe2O3The content is less than or equal to 2wt percent.
In some embodiments of the invention, the clay is selected from suzhou clays; the particle size of the clay is 80-200 meshes; al (Al)2O3The content is more than or equal to 32 wt%; fe2O3The content is less than or equal to 1.0wt percent.
In some embodiments of the invention, the thickening agent is selected from sodium carboxymethyl cellulose and/or dextrin.
In some embodiments of the invention, the binding agent is selected from sodium hexametaphosphate and/or sodium tripolyphosphate.
In some embodiments of the invention, the binding agent is selected from sodium hexametaphosphate and sodium tripolyphosphate; 1-1.2 parts of sodium hexametaphosphate; 5-6 parts of sodium tripolyphosphate.
In some embodiments of the invention, the dispersant is selected from calcium lignosulfonate.
In another aspect, the present invention provides a method for preparing a refractory mortar according to the first aspect of the present invention, comprising: mixing and mixing high-aluminum fire-resistant dedusting ash, alumina fine powder, clay, a thickening agent, a bonding agent and a dispersing agent to prepare the fire-resistant fire clay.
Another aspect of the invention provides the use of a refractory mortar according to the first aspect of the invention in a refractory brick masonry.
Compared with the prior art, the invention has the beneficial effects that:
1. the refractory fire clay is used for filling and shaping refractory brick seams, and has the advantages of good cohesiveness, good integrity of the masonry brick body, good air tightness, high strength at normal temperature, small volume shrinkage in high-temperature use, small heat loss and uniform furnace shell temperature.
2. The refractory fire clay with higher refractoriness, simple preparation, convenient construction and good use effect is needed in the stacking of the shaped high-aluminum refractory bricks. The invention uses the fire-resistant dust collected by the automatic production line of the blast furnace tapping channel unshaped refractory in a large proportion, and the dust contains a large amount of silicon carbide and alumina (SiC is more than or equal to 30 percent) and has better caking property, slag resistance and erosion resistance. The fire-resistant fire clay which can resist the high temperature of 1700 ℃ and has good sealing performance, difficult cracking and long service life after being built is obtained by mixing the fire-resistant fire clay with other parts of fire-resistant materials and additives in proportion. The refractory mortar has the advantages of small volume of shrinkage generated at high temperature, high refractoriness, good plasticity, convenient construction, large bonding strength, strong corrosion resistance, slag resistance and good heat spalling performance. Because most materials are mainly made of the refractory dedusting ash collected by the automatic production line for the indefinite refractory materials of the blast furnace tapping channel, the production of the indefinite refractory materials is realized, a large amount of dedusting ash collected by production equipment is stacked in a field, the utilization of the dedusting ash is increased, the environment is protected, the manufacturing cost is lower, and the effects of utilizing waste, reducing cost and the like are realized.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present specification.
The inventor of the invention provides a refractory fire clay through a large number of exploration experiments, wherein the refractory dust collected by an automatic production line of an unshaped refractory material of a blast furnace tapping channel is used as a main material, and the refractory fire clay with high temperature resistance, good usability, environmental protection and lower manufacturing cost is obtained by a compounding technology of alumina fine powder, clay and an additive, and is mainly used for shaped refractory brick stacking. The refractory fire clay has the effects of high temperature resistance, good usability, environmental protection and lower manufacturing cost, improves the service life of products, saves resources to a certain extent, recycles solid wastes and reduces the cost, and belongs to the field of metallurgy. On the basis of this, the present invention has been completed.
The invention provides a fire-resistant fire clay, which comprises the following raw materials in parts by weight:
the refractory fire clay provided by the invention can comprise 35-50 parts, 35-40 parts, 40-45 parts, 45-50 parts, 35-38 parts, 38-40 parts, 40-43 parts, 43-45 parts, 45-48 parts or 48-50 parts of high-alumina refractory dedusting ash by weight. The high-alumina refractory dedusting ash is generally refractory dedusting ash collected by an automatic production line of an indefinite refractory of a blast furnace tapping channel. The problem of stacking a large amount of dust removal ash that production facility collected during production of indefinite form refractory material was gone on in the place can be solved, the utilization of dust removal ash is increaseed, has played the environmental protection, and the cost is lower, has effects such as the waste utilization, falls the cost. The particle size of the high-alumina refractory dedusting ash can be 180 meshes-0.5 mm. The interval screening content of the high-aluminum fireproof dedusting ash is more than or equal to 90 wt%. Preferably, the screening content of the high-aluminum refractory dust is 5-10% in the interval with the particle size of more than 0.5mm, the screening content of the high-aluminum refractory dust in the interval with the particle size of 0.5mm-180 meshes is more than or equal to 75-85 wt%, and the screening content of the high-aluminum refractory dust in the interval with the particle size of less than or equal to 180 meshes is 10-15 wt%. Wherein Al in the high-aluminum refractory dust-removing ash2O3The content is usually more than or equal to 50 wt%; preferably 60 wt% or more. Fe2O3The content is usually less than or equal to 5.0 wt%; preferably 1.0% or less.
The refractory fireclay provided by the invention can comprise 25-35 parts by weight, 20-23 parts by weight, 23-27 parts by weight, 27-30 parts by weight or 30-35 parts by weight of alumina fine powder. The fine alumina powder is 80-100 mesh alumina. The alumina fine powder has the functions of supplementing and increasing the aluminum content in the material, and has stable chemical components, low impurity content and difficult shrinkage deformation in a high-temperature state due to refractoriness, thereby improving the stability.
In some embodiments, the alumina fine powder may also have a particle size of 80 mesh to 90 mesh, or 90 mesh to 100 mesh, etc. The interval screening content of the alumina fine powder is more than or equal to 90 wt%. In the fine alumina powder, Al2O3Content (wt.)80 wt% or more, preferably 85 wt% or more. Fe2O3The content is less than or equal to 2wt percent, preferably less than or equal to 1wt percent.
The fire-resistant fire clay provided by the invention can comprise 15-20 parts, 15-18 parts, 18-20 parts, 15-16 parts, 16-17 parts, 17-18 parts, 18-19 parts or 19-20 parts of clay by weight. Clays are plastic aluminosilicates with very small particles (180-200 mesh). In addition to aluminum, clay contains small amounts of magnesium, iron, sodium, potassium and calcium, and is an important mineral raw material. The clay is selected from Suzhou clay, and has good plasticity, cohesiveness, and adhesiveness. The Suzhou clay has lower iron content in chemical components than other clays, generates less low-melting substances in high-temperature use and has higher refractoriness.
In some embodiments, the suzhou clay may have a particle size of 180 mesh to 200 mesh, 180 mesh to 190 mesh, or 190 mesh to 200 mesh, among others. In Suzhou clay, Al2O3The content is 30 wt.% or more, preferably 32 wt.% or more, more preferably 33 wt.% or more. Fe2O3The content is less than or equal to 1.0wt percent.
The fire-resistant fire clay provided by the invention can comprise 0.5-1 part, 0.5-0.8 part, 0.8-1 part, 0.5-0.6 part, 0.6-0.7 part, 0.7-0.8 part, 0.8-0.9 part or 0.9-1 part of thickening agent by weight. The thickener is selected from sodium carboxymethylcellulose (c.m.c) and/or dextrin. The addition of C.M.C can increase the adhesive property and water-retaining property of the material.
The fire-resistant fire clay provided by the invention can comprise 7-8.2 parts, 7-7.6 parts, 7.6-8.2 parts, 7-7.2 parts, 7.2-7.4 parts, 7.4-7.6 parts, 7.6-7.8 parts, 7.8-8.0 parts or 8.0-8.2 parts of a bonding agent by weight. In some embodiments, the binding agent is selected from sodium hexametaphosphate and/or sodium tripolyphosphate. The binder is preferably selected from sodium hexametaphosphate and sodium tripolyphosphate. By adding sodium hexametaphosphate and sodium tripolyphosphate together, the composite binder can be added, so that the storage performance and the strength performance of the material are improved. The sodium hexametaphosphate can be 1-1.2 parts, 1-1.1 parts or 1.1-1.2 parts by weight. The sodium hexametaphosphate further comprises 5-6 parts by weight, 5-5.5 parts by weight, 5.5-6 parts by weight, 5-5.3 parts by weight, 5.3-5.5 parts by weight, 5.5-5.8 parts by weight, or 5.8-6 parts by weight of sodium hexametaphosphate.
In some embodiments, the ratio of sodium hexametaphosphate to sodium tripolyphosphate is 1-1.2: 5-6, preferably 1: 5.
the fire-resistant fire clay provided by the invention can comprise 0.5-1 part, 0.5-0.8 part, 0.8-1 part, 0.5-0.6 part, 0.6-0.7 part, 0.7-0.8 part, 0.8-0.9 part or 0.9-1 part of dispersing agent by weight. The dispersant is selected from calcium lignosulfonate. Calcium lignosulfonate (abbreviated as wood calcium, molecular formula C)20H24CaO10S2) The multi-component high molecular polymer anionic surfactant is light yellow to dark brown powder in appearance, has slight aromatic smell, has a molecular weight of 800-10000 generally, and has strong dispersibility, cohesiveness and chelation.
In a specific embodiment, the raw materials of the refractory fire clay comprise the following components in parts by weight:
the second aspect of the present invention provides a method for preparing the fire-resistant fire clay according to the first aspect of the present invention, and those skilled in the art can select a suitable method to obtain the fire-resistant fire clay by preparing the formulation of the fire-resistant fire clay according to the first aspect of the present invention. For example, the preparation method may be physical mixing, and specifically may include: the components are mixed in the formula provided by the first aspect of the invention. More specifically, the high-aluminum fire-resistant fly ash, the alumina fine powder, the clay, the thickening agent, the bonding agent and the dispersing agent are mixed and then mixed to prepare the fire-resistant fire clay. The mixing time may be, for example, 170-.
More specifically, in one embodiment, the preparation method comprises:
1. setting a formula on a main control console; and weighing small materials such as a dispersing agent.
2. Starting the metering equipment, accurately weighing each material to the intermediate weighing bin, and then entering a conveying system;
3. the mixture enters a mixing roll for mixing through a conveying system and a lifting hopper, and small materials are put in through a small material feeding port for mixing, wherein the mixing time is 170 plus 200 seconds;
4. after mixing, the mixture is packaged by a ton bag and stacked by a packaging system.
A third aspect of the invention provides the use of the refractory mortar of the first aspect of the invention in a refractory brick masonry. The specific fire-resistant fire clay can be used for filling and shaping fire-resistant brick seams and obtaining a high-temperature fire-resistant brick masonry after being built with fire-resistant bricks.
The invention is characterized in that the refractory dust removal ash collected by the automatic production line of the unshaped refractory of the blast furnace tapping channel is used as a main material, and the refractory fire clay with high temperature resistance, good usability, environmental protection and lower manufacturing cost is obtained by a compounding technology of the refractory dust removal ash, the bauxite powder, the clay and the additive.
The concrete effects are as follows:
1. the refractory fire clay is used for filling and shaping refractory brick seams, and has the advantages of good cohesiveness, good integrity of the masonry brick body, good air tightness, high strength at normal temperature, small volume shrinkage in high-temperature use, small heat loss and uniform furnace shell temperature.
2. The refractory fire clay with higher refractoriness, simple preparation, convenient construction and good use effect is needed in the stacking of the shaped high-aluminum refractory bricks. The invention uses the fire-resistant dust collected by the automatic production line of the blast furnace tapping channel unshaped refractory in a large proportion, and the dust contains a large amount of silicon carbide and alumina (SiC is more than or equal to 30 percent) and has better caking property, slag resistance and erosion resistance. The fire-resistant fire clay which can resist the high temperature of 1700 ℃ and has good sealing performance, difficult cracking and long service life after being built is obtained by mixing the fire-resistant fire clay with other parts of fire-resistant materials and additives in proportion. The refractory mortar has the advantages of small volume of shrinkage generated at high temperature, high refractoriness, good plasticity, convenient construction, large bonding strength, strong corrosion resistance, slag resistance and good heat spalling performance. Because most materials are mainly made of the refractory dedusting ash collected by the automatic production line for the indefinite refractory materials of the blast furnace tapping channel, the production of the indefinite refractory materials is realized, a large amount of dedusting ash collected by production equipment is stacked in a field, the utilization of the dedusting ash is increased, the environment is protected, the manufacturing cost is lower, and the effects of utilizing waste, reducing cost and the like are realized.
The following examples are provided to further illustrate the advantageous effects of the present invention.
In order to make the objects, technical solutions and advantageous technical effects of the present invention more clear, the present invention is further described in detail below with reference to examples. However, it should be understood that the embodiments of the present invention are only for explaining the present invention and are not for limiting the present invention, and the embodiments of the present invention are not limited to the embodiments given in the specification. The examples were prepared under conventional conditions or conditions recommended by the material suppliers without specifying specific experimental conditions or operating conditions.
Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; it is also to be understood that a combined connection between one or more devices/apparatus as referred to in the present application does not exclude that further devices/apparatus may be present before or after the combined device/apparatus or that further devices/apparatus may be interposed between two devices/apparatus explicitly referred to, unless otherwise indicated. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.
In the following examples, reagents, materials and instruments used are commercially available unless otherwise specified.
Alumina fine powder was purchased from Zexin refractory, GmbH, Mo; suzhou clay was purchased from Zhang ze burden, Inc., Yixing; c.m.c powder was purchased from gallhouse blue brocade environmental protection technology ltd; sodium hexametaphosphate was purchased from Guanghui chemical plant of Qingzhou city; sodium tripolyphosphate was purchased from a Guanghui chemical plant in Qingzhou city; calcium lignosulfonate was purchased from a Guanghui chemical plant in Qingzhou city.
The raw material formulation ratios of the respective samples in examples are shown in Table 1
TABLE 1
Setting a formula on a main control console according to a process flow; and weighing small dispersing agent materials. Starting the metering equipment, accurately weighing each material to the intermediate weighing bin, and then entering a conveying system; the mixture enters a mixing roll for mixing through a conveying system and a lifting hopper, and small materials are put in through a small material feeding port for mixing, wherein the mixing time is 180 seconds; after mixing, the mixture is packaged by a ton bag and stacked by a packaging system.
The chemical composition, flexural strength, particle size, and bonding time of each example were measured, and the test results are shown in table 2:
TABLE 2
The amount of water added in the test was 26%, and the mixture was used after being sufficiently stirred. From the results, the fire-resistant fire clay prepared by the formula has excellent data on chemical components, particle size distribution, flexural strength, high-temperature strength, bonding time and the like. As 35-50% of materials in the formula use the refractory dust collected by the blast furnace tapping channel indefinite-type refractory automatic production line as a main material, and the dust contains a large amount of silicon carbide and aluminum oxide components, the dust has better cohesiveness, slag resistance and erosion resistance. The fire-resistant fire clay which can resist the high temperature of 1700 ℃ and has good sealing performance, difficult cracking and long service life after being built is obtained by mixing the fire-resistant fire clay with other parts of fire-resistant materials and additives in proportion. The refractory mortar has the advantages of small volume of shrinkage generated at high temperature, high refractoriness, good plasticity, convenient construction, large bonding strength, strong corrosion resistance, slag resistance and good heat spalling performance. Meanwhile, the production of the indefinite-form refractory is realized, a large amount of dust removal ash collected by production equipment is stacked in a field, the utilization of the dust removal ash is increased, the environment is protected, the manufacturing cost is low, the effects of waste utilization, cost reduction and the like are achieved, the material manufacturing cost is greatly reduced, the pollution to the surrounding environment is reduced, the process is more environment-friendly, the resources are saved, and the trend of green sustainable development is met.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The fire-resistant fire clay comprises the following raw materials in parts by weight:
2. the refractory mortar of claim 1, wherein the high-alumina refractory fly ash has a particle size of 180 mesh to 0.5 mm; the screening content of the interval is more than or equal to 90 wt%; al (Al)2O3The content is more than or equal to 60 wt%; fe2O3The content is less than or equal to 5.0 wt%; SiC is more than or equal to 30 wt%.
3. The refractory fireclay as claimed in claim 1, wherein the alumina fine powder has a particle size of 80-100 mesh; interval sieve containsThe amount is more than or equal to 90 wt%; al (Al)2O3The content is more than or equal to 80 wt%; fe2O3The content is less than or equal to 2wt percent.
4. The refractory fireclay of claim 1 wherein said clay is selected from suzhou clays; the particle size of the clay is 80-200 meshes; al (Al)2O3The content is more than or equal to 30 wt%; fe2O3The content is less than or equal to 1.0wt percent.
5. The fire resistant fireclay according to claim 1, wherein said thickener is selected from sodium carboxymethylcellulose and/or dextrin.
6. The refractory fireclay of claim 1, wherein said binder is selected from the group consisting of sodium hexametaphosphate and/or sodium tripolyphosphate.
7. The refractory fireclay as recited in claim 1, wherein said binder is selected from the group consisting of sodium hexametaphosphate and sodium tripolyphosphate; 1-1.2 parts of sodium hexametaphosphate; 5-6 parts of sodium tripolyphosphate.
8. The refractory fireclay of claim 1 wherein said dispersant is selected from the group consisting of calcium lignosulfonates.
9. The method of preparing a refractory fireclay according to claims 1-8 comprising: mixing and mixing high-aluminum fire-resistant dedusting ash, alumina fine powder, clay, a thickening agent, a bonding agent and a dispersing agent to prepare the fire-resistant fire clay.
10. Use of the refractory mortar of any one of claims 1-8 in refractory brick masonry.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538885A (en) * | 2022-03-29 | 2022-05-27 | 内蒙古包钢利尔高温材料有限公司 | Coating for iron ladle and torpedo ladle and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367661A (en) * | 2008-09-19 | 2009-02-18 | 攀钢集团研究院有限公司 | Flame-proof seggar formulated with ferrovanadium slag |
| CN102311269A (en) * | 2010-06-30 | 2012-01-11 | 淄博海泰高温材料科技有限公司 | Method for preparing high-alumina refractory mortar by adopting new composite binder |
| CN113603466A (en) * | 2021-08-20 | 2021-11-05 | 浙江自立高温科技股份有限公司 | Steel ladle aluminum magnesium refractory mortar for recycling refractory dust-absorbing powder and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367661A (en) * | 2008-09-19 | 2009-02-18 | 攀钢集团研究院有限公司 | Flame-proof seggar formulated with ferrovanadium slag |
| CN102311269A (en) * | 2010-06-30 | 2012-01-11 | 淄博海泰高温材料科技有限公司 | Method for preparing high-alumina refractory mortar by adopting new composite binder |
| CN113603466A (en) * | 2021-08-20 | 2021-11-05 | 浙江自立高温科技股份有限公司 | Steel ladle aluminum magnesium refractory mortar for recycling refractory dust-absorbing powder and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538885A (en) * | 2022-03-29 | 2022-05-27 | 内蒙古包钢利尔高温材料有限公司 | Coating for iron ladle and torpedo ladle and preparation method thereof |
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| CN113979762B (en) | 2023-09-08 |
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