CN113526967B - Iron runner castable taking waste refractory as main material - Google Patents
Iron runner castable taking waste refractory as main material Download PDFInfo
- Publication number
- CN113526967B CN113526967B CN202110775885.2A CN202110775885A CN113526967B CN 113526967 B CN113526967 B CN 113526967B CN 202110775885 A CN202110775885 A CN 202110775885A CN 113526967 B CN113526967 B CN 113526967B
- Authority
- CN
- China
- Prior art keywords
- waste
- iron runner
- particles
- equal
- runner castable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B35/622—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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- 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
-
- 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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- 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
- C04B2235/34—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
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/424—Carbon black
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5212—Organic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—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
Abstract
The invention provides a novel iron runner castable taking waste refractory as a main material, which comprises the following components in percentage by mass: 46-56% of scrap iron runner castable particles; 2-6% of waste silicon carbide sagger material particles; 12-14% of waste silicon carbide sagger powder and 12-18% of waste 95 porcelain particles; 2-3% of spherical asphalt; 1 to 1.4 percent of pure calcium aluminate cement; 8-10% of alumina micropowder; submicron SiO 2 2-3% of micropowder; 0.8-1% of metal silicon powder; 0.1 to 0.16 percent of metal aluminum powder; 0.16 to 0.2 percent of nano carbon black; 0.08-0.1% of explosion-proof fiber; 0.1 to 0.16 percent of dispersing agent; adding 5% of water, stirring uniformly, and vibrating to form. The iron runner castable fully utilizes various waste materials, and the comprehensive cost of the iron runner castable is greatly reduced; meanwhile, industrial application proves that the iron runner castable has good field use effect, strong batch production operability, excellent physical properties and good quality stability, and is suitable for all parts of a cast house.
Description
Technical Field
The invention belongs to the field of uncertain refractory materials, and particularly relates to an iron runner castable taking waste refractory materials as main materials.
Background
The annual iron runner material demand of the domestic blast furnace cast house exceeds 60 ten thousand tons. The electric smelting corundum consumed by the iron runner material is approximately 30 ten thousand tons each year, and the electricity consumption of each ton of electric smelting corundum is 2300 degrees. The silicon carbide consumed by the iron runner material is approximately 10 ten thousand tons each year, and 6000 degrees are consumed per ton of silicon carbide. Meanwhile, large and medium-sized iron and steel enterprises have a large number of used iron runner remnants which are disintegrated and abandoned each year, a large number of used alumina electroceramics which are abandoned each year in the power industry, a large number of used silicon carbide sagger plates which are abandoned each year in the ceramic industry, and the waste refractory materials are not fully recycled.
Although a small amount of waste refractory materials are reported to be applied to the iron runner castable in China, the application types of the waste refractory materials are single, the utilization ratio of the waste refractory materials is low, 60% of the waste refractory materials are difficult to break through, and the quality fluctuation is large. The problems of high impurity content, high water absorption and the like of the waste refractory materials generally cause the large increase of the water addition amount and the cement consumption of the castable, thereby seriously affecting the service life of the castable. Under the large background that iron and steel enterprises and refractory enterprises face survival pressure and China advocates energy conservation, emission reduction and recycling economy, how to make the utilization ratio of waste refractory materials in the iron runner castable be improved in a breakthrough manner becomes an important subject to reduce the cost of the iron runner castable.
Disclosure of Invention
The invention aims to provide an iron runner castable taking waste refractory materials as main materials, which can realize the recycling of the waste refractory materials while ensuring the excellent performance of the iron runner castable.
In order to achieve the above purpose, the following technical scheme is adopted:
the iron runner castable taking the waste refractory as the main material comprises the following components in percentage by mass:
46-56% of scrap iron runner castable particles;
2-6% of waste silicon carbide sagger material particles;
12-14% of waste silicon carbide sagger powder
12-18% of waste 95 porcelain particles;
2-3% of spherical asphalt;
1 to 1.4 percent of pure calcium aluminate cement;
8-10% of alumina micropowder;
submicron SiO 2 2-3% of micropowder;
0.8-1% of metal silicon powder;
0.1 to 0.16 percent of metal aluminum powder
0.16 to 0.2 percent of nano carbon black
0.08-0.1% of explosion-proof fiber;
0.1 to 0.16 percent of dispersing agent;
adding 5% of water, stirring uniformly, and vibrating to form.
In the scheme, the scrap iron runner castable particles are obtained by carefully selecting, separating impurities and crushing demolishing blocks of a main runner of a large and medium-sized blast furnace, wherein the proportion of the particles with the particle size of 12-5 mm, the particles with the particle size of 5-3 mm and the particles with the particle size of 3-2 mm is 30:15: (1-11).
In the scheme, the waste silicon carbide sagger material particles are obtained by carefully selecting waste silicon carbide sagger plates, separating impurities, crushing and drying, and the granularity of the waste silicon carbide sagger material particles is less than 2mm, and the SiC content is more than or equal to 80wt%.
In the scheme, the waste silicon carbide sagger powder is obtained by carefully selecting, separating impurities, drying and grinding waste silicon carbide sagger plates, wherein the granularity of the waste silicon carbide sagger powder is less than or equal to 74 mu m, and the SiC content is more than or equal to 80wt%.
In the scheme, the waste 95 porcelain particles are obtained by selecting, separating impurities, crushing and drying waste electric porcelain in the power industry, the granularity of the waste 95 porcelain particles is less than 2mm, and Al 2 O 3 The content is more than or equal to 94 weight percent.
In the scheme, the granularity of the spherical asphalt is less than or equal to 1.5mm.
In the scheme, the pure calcium aluminate cement comprises the following main chemical components: al (Al) 2 O 3 68.5-70.5wt%，CaO 28.5-30.5wt%。
In the above scheme, the particle size distribution of the alumina micropowder is: d, d 10 ≤0.9μm;d 50 ≤2μm;d 90 Less than or equal to 5 mu m, wherein Al 2 O 3 ≥99.5wt%、Na 2 O≤0.1wt%。
In the above scheme, the submicron SiO 2 Micropowder d 90 Less than or equal to 0.5 micrometers; volume average particle diameter D4, 3]Less than or equal to 0.3 micrometers; siO (SiO) 2 The content is more than 99.8wt%.
In the scheme, the granularity of the metal silicon powder is less than or equal to 45 mu m; wherein the Si content is more than or equal to 98.5wt%.
In the scheme, the metal aluminum powder is produced by a nitrogen atomization process, and the Al is more than or equal to 99wt% and the fineness is less than or equal to 74 mu m.
In the scheme, the nano carbon black is produced by Germany in N990R type.
In the scheme, the special explosion-proof fiber is a Japanese polyvinyl alcohol water-soluble fiber with the length of 6mm and the diameter of 18 microns, and the melting point is less than or equal to 80 ℃.
In the scheme, the dispersing agent is a polyacrylic water reducer.
Compared with the prior art, the invention has the beneficial effects that:
according to the iron runner castable, 3 waste refractory materials such as waste iron runner castable, waste silicon carbide sagger material and waste 95 porcelain are used as main materials to replace corundum and silicon carbide with high energy consumption and high pollution, the replacement proportion reaches more than 80%, and the electric energy consumption is saved by more than 2500 degrees (2300 x 60% +6000 x 20% = 2580 degrees) per ton of iron runner castable.
The invention innovates submicron SiO 2 The micro powder is applied to an iron runner system of the waste refractory material, so that the problem of high-temperature performance degradation of the castable caused by high-proportion waste refractory material is solved. The method breaks through the water addition limit of the castable, breaks through the cement dosage limit, reduces the generation of anorthite, anorthite and other low-melting substances, breaks through the thermal strength limit, and plays a role in accelerating the castable under the condition of ultralow cement.
The invention innovatively applies the nano carbon black to submicron SiO 2 An iron runner casting material system taking waste refractory materials combined by micro powder as a main material. Not only plays a certain role in filling and reducing water, but also shows excellent slag erosion resistance; at the same time, the nano carbon black is prevented from being prepared from submicron SiO 2 The interference caused by a micro powder combination system formed by micro powder and alumina micro powder improves the slag resistance of the castable.
The iron runner castable fully utilizes various waste materials, and the comprehensive cost of the iron runner castable is greatly reduced; meanwhile, industrial application proves that the iron runner castable has good field use effect, strong batch production operability, excellent physical properties and good use effect, and is suitable for all parts of a cast house.
Detailed Description
The following examples further illustrate the technical aspects of the present invention, but are not intended to limit the scope of the present invention.
The invention provides an iron runner castable taking waste refractory as a main material, which comprises the following components in percentage by mass:
46-56% of scrap iron runner castable particles; 2-6% of waste silicon carbide sagger material particles; 12-14% of waste silicon carbide sagger powder and 12-18% of waste 95 porcelain particles; 2-3% of spherical asphalt; 1 to 1.4 percent of pure calcium aluminate cement; 8-10% of alumina micropowder; submicron SiO 2 2-3% of micropowder; 0.8-1% of metal silicon powder; 0.1 to 0.16 percent of metal aluminum powder, 0.16 to 0.2 percent of nano carbon black and 0.08 to 0.1 percent of explosion-proof fiber; 0.1 to 0.16 percent of dispersing agent; adding 5% of water, stirring uniformly, and vibrating to form.
The scrap iron runner castable particles in the following examples are obtained by carefully selecting, separating impurities, crushing and fully drying demolished blocks of a main runner of a large and medium-sized blast furnace, wherein the particles have the particle size of 12-5 mm: particles having a particle size of 5-3 mm: the proportion of particles with the particle size of 3-2 mm is 31:14:1-11.
The waste silicon carbide sagger material particles are obtained by carefully selecting waste silicon carbide sagger plates, separating impurities, crushing and fully drying, and the granularity of the waste silicon carbide sagger material particles is 0.1-2mm, and the SiC content is more than or equal to 80%.
The waste silicon carbide sagger powder is obtained by carefully selecting waste silicon carbide sagger plates, separating impurities, grinding and fully drying, wherein the granularity of the waste silicon carbide sagger powder is less than or equal to 74 mu m, and the SiC content is more than or equal to 80wt%.
The waste 95 porcelain particles are obtained by selecting, separating impurities, crushing and fully drying waste electroceramics used in the power industry, wherein the granularity of the waste 95 porcelain particles is 0.1-2mm, and Al 2 O 3 The content is more than or equal to 94 weight percent.
The particle size distribution of the alumina micropowder is as follows: d, d 10 ≤0.9μm;d 50 ≤2μm;d 90 Less than or equal to 5 mu m, al thereof 2 O 3 ≥99.5wt%、Na 2 O≤0.1wt%。
The granularity of the metal silicon powder is less than or equal to 45 mu m; wherein the Si content is more than or equal to 98.5wt%
The granularity of the spherical asphalt is less than or equal to 1.5mm.
The nano carbon black is produced by Germany and is of N990R type.
The metal aluminum powder is produced by a nitrogen atomization process, and the Al is more than or equal to 99wt% and the fineness is less than or equal to 74 mu m.
The special explosion-proof fiber is a Japanese polyvinyl alcohol water-soluble fiber with the length of 6mm and the diameter of 18 microns, and the melting point is less than or equal to 80 ℃.
The dispersing agent is a polyacrylic water reducer.
The main chemical components of the pure calcium aluminate cement are as follows: al (Al) 2 O 3 68.5-70.5wt%，CaO 28.5-30.5wt%。
Example 1
An iron runner casting material using waste refractory as main material is prepared from (wt%) 46% of waste iron runner casting material particles, 6% of waste silicon carbide sagger particles, 12% of waste silicon carbide sagger powder, 18% of waste 95 porcelain particles, 3% of spherical asphalt, 1% of pure calcium aluminate cement, 9.44% of alumina micropowder and 3% of submicron SiO 2 Fully mixing the micro powder, 1% of metal silicon powder, 0.16% of metal aluminum powder, 0.1% of explosion-proof fiber, 0.2% of nano carbon black and 0.1% of dispersing agent; adding water (the mass of the water is 5% of that of the iron runner castable), stirring uniformly, and vibrating for molding. And naturally drying the molded sample for 24 h, and then carrying out heat treatment for 24 h at 110 ℃ to obtain the iron runner castable sample containing 82% of waste refractory.
The iron runner castable sample with the waste refractory material prepared in example 1 as the main material was tested, and the test performance results are shown in table 1. The detection is carried out according to the current national standard or industry standard, and the obtained detection result is an average detection result of 3 times (hereinafter the same applies).
TABLE 1 iron runner castable sample test results with waste refractory material as the main material prepared in example 1
Example 2
An iron runner casting material taking waste refractory as a main material comprises 56 percent (weight percentage, the same applies below) of waste iron runner casting material particles, 2 percent of waste silicon carbide sagger material particles, 12.46 percent of waste silicon carbide sagger powder, 115 percent of waste 95 porcelain particles and 2 percent of ballsAsphalt, 1.2% of pure calcium aluminate cement, 8% of alumina micropowder and 2% of submicron SiO 2 The preparation method comprises the following steps of fully mixing micro powder, 0.8% of metal silicon powder, 0.1% of metal aluminum powder, 0.08% of explosion-proof fiber, 0.16% of nano carbon black and 0.2% of dispersing agent; adding water (the mass of the water is 5% of that of the iron runner castable), stirring uniformly, and vibrating for molding. And naturally drying the molded sample for 24 h, and then carrying out heat treatment for 24 h at 110 ℃ to obtain the iron runner castable sample containing 80.46% of waste refractory.
The iron runner castable sample with the waste refractory material prepared in example 2 as the main material was tested, and the test performance results are shown in table 2. The detection is carried out according to the current national standard or industry standard, and the obtained detection result is an average detection result of 3 times (hereinafter the same applies).
TABLE 2 detection results of iron runner castable sample with waste refractory as main material prepared in example 2
Example 3
An iron runner casting material taking waste refractory as a main material comprises 51% (weight percentage, the same applies below) of waste iron runner casting material particles, 4% of waste silicon carbide sagger material particles, 14% of waste silicon carbide sagger powder, 13.31% of waste 95 porcelain particles, 2.5% of spherical asphalt, 1.4% of pure calcium aluminate cement, 10% of alumina micropowder and 2.5% of submicron SiO 2 Fully mixing the micro powder, 0.9% of metal silicon powder, 0.12% of metal aluminum powder, 0.09% of explosion-proof fiber, 0.18% of nano carbon black and 0.15% of dispersing agent; adding water (the mass of the water is 5% of that of the iron runner castable), stirring uniformly, and vibrating for molding. And naturally drying the molded sample for 24 h, and then carrying out heat treatment for 24 h at 110 ℃ to obtain the iron runner castable sample containing 82.33% of waste refractory.
The iron runner castable sample with the waste refractory material prepared in example 3 as the main material was tested, and the test performance results are shown in table 3. The detection is carried out according to the current national standard or industry standard, and the obtained detection result is an average detection result of 3 times (hereinafter the same applies).
TABLE 3 detection results of iron runner castable sample with waste refractory as main material prepared in example 3
Example 4
An iron runner casting material taking waste refractory as a main material comprises 54.38% (weight percentage, the following is the same) of waste iron runner casting material particles, 4% of waste silicon carbide sagger material particles, 13% of waste silicon carbide sagger powder, 12% of waste 95 porcelain particles, 2% of spherical asphalt, 1.2% of pure calcium aluminate cement, 9% of alumina micropowder and 3% of submicron SiO 2 Fully mixing the micro powder, 1% of metal silicon powder, 0.12% of metal aluminum powder, 0.1% of explosion-proof fiber, 0.2% of nano carbon black and 0.1% of dispersing agent; adding water (the mass of the water is 5% of that of the iron runner castable), stirring uniformly, and vibrating for molding. And naturally drying the molded sample for 24 h, and then carrying out heat treatment for 24 h at 110 ℃ to obtain the iron runner castable sample containing 83.38% of waste refractory.
The iron runner castable sample prepared in example 4 was tested, and the test performance results are shown in table 4. The detection is carried out according to the current national standard or industry standard, and the obtained detection result is an average detection result of 3 times (hereinafter the same applies).
TABLE 4 detection results of iron runner castable sample with waste refractory as main material prepared in example 4
The iron runner castable taking the waste refractory as the main material has the characteristics of high utilization ratio of the waste refractory, low cement consumption, high thermal strength, good slag resistance and the like. The iron runner castable is tried on a blast furnace of the underway steel mill No. 1, the iron excess reaches 17.7 ten thousand tons, the raw material cost of the iron runner castable is greatly reduced, and the double harvest of economic and social benefits is realized. Can be widely applied to the non-impact area, branch channel, slag channel and other parts of the main channel of the blast furnace casting house.
It is apparent that the above examples are only examples given for clarity of illustration and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And thus obvious variations or modifications to the disclosure are within the scope of the invention.
Claims (8)
1. The iron runner castable taking the waste refractory as the main material is characterized by comprising the following components in percentage by mass:
46-56% of scrap iron runner castable particles;
2-6% of waste silicon carbide sagger material particles;
12-14% of waste silicon carbide sagger powder
12-18% of waste 95 porcelain particles;
2-3% of spherical asphalt;
1 to 1.4 percent of pure calcium aluminate cement;
8-10% of alumina micropowder;
submicron SiO 2 2-3% of micropowder;
0.8-1% of metal silicon powder;
0.1 to 0.16 percent of metal aluminum powder;
0.16 to 0.2 percent of nano carbon black;
0.08-0.1% of explosion-proof fiber;
0.1 to 0.16 percent of dispersing agent;
adding 5% of water, uniformly stirring, and vibrating to form;
the granularity of the spherical asphalt is less than or equal to 1.5mm;
the dispersing agent is a polyacrylic acid water reducing agent;
the nano carbon black is produced by Germany in N990R type;
the explosion-proof fiber is a polyvinyl alcohol water-soluble fiber with the length of 6mm and the diameter of 18 microns, and the melting point is less than or equal to 80 ℃;
the submicron SiO 2 Micropowder d 90 Less than or equal to 0.5 micrometers; volume average particle diameter D4, 3]Less than or equal to 0.3 micrometers;SiO 2 the content is more than 99.8wt%.
2. The iron runner castable taking the waste refractory as a main material as claimed in claim 1, wherein the waste iron runner castable particles are obtained by carefully selecting demolished blocks of a main runner of a large and medium-sized blast furnace, separating impurities and crushing, wherein the proportion of the particles with the particle size of 12-5 mm, the particles with the particle size of 5-3 mm and the particles with the particle size of 3-2 mm is 30:14: (1-11).
3. The iron runner castable taking the waste refractory as a main material according to claim 1, wherein the waste silicon carbide sagger material particles are obtained by carefully selecting waste silicon carbide sagger plates, separating impurities, crushing and drying, the granularity of the waste silicon carbide sagger material particles is less than 2mm, and the SiC content is more than or equal to 80wt%.
4. The iron runner castable taking the waste refractory as a main material according to claim 1, wherein the waste silicon carbide sagger powder is obtained by carefully selecting, separating impurities, drying and grinding waste silicon carbide sagger plates, the granularity of the waste silicon carbide sagger powder is less than or equal to 74 mu m, and the SiC content is more than or equal to 80wt%.
5. The iron runner castable taking waste refractory as a main material as claimed in claim 1, wherein the waste 95 porcelain particles are obtained by selecting, separating impurities, crushing and drying waste electric porcelain in the power industry, the granularity of the waste 95 porcelain particles is less than 2mm, and Al 2 O 3 The content is more than or equal to 94 weight percent.
6. The iron runner castable taking waste refractory as a main material according to claim 1, wherein the pure calcium aluminate cement comprises the following main chemical components: al (Al) 2 O 3 68.5-70.5wt%，CaO 28.5-30.5wt%。
7. The iron runner castable taking waste refractory as a main material according to claim 1, wherein the particle size distribution of the alumina micropowder is as follows: d, d 10 ≤0.9μm;d 50 ≤2μm;d 90 Less than or equal to 5 mu m, wherein Al 2 O 3 ≥99.5wt%、Na 2 O≤0.1wt%。
8. The iron runner castable taking the waste refractory as a main material according to claim 1, wherein the granularity of the metal silicon powder is less than or equal to 45 μm; wherein the Si content is more than or equal to 98.5wt%; the metal aluminum powder is produced by a nitrogen atomization process, and the Al is more than or equal to 99wt% and the fineness is less than or equal to 74 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775885.2A CN113526967B (en) | 2021-07-09 | 2021-07-09 | Iron runner castable taking waste refractory as main material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775885.2A CN113526967B (en) | 2021-07-09 | 2021-07-09 | Iron runner castable taking waste refractory as main material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113526967A CN113526967A (en) | 2021-10-22 |
| CN113526967B true CN113526967B (en) | 2023-08-15 |
Family
ID=78098144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110775885.2A Active CN113526967B (en) | 2021-07-09 | 2021-07-09 | Iron runner castable taking waste refractory as main material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113526967B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284808A (en) * | 1990-05-14 | 1994-02-08 | Minteq International Inc. | Dry refractory composition |
| JPH0748179A (en) * | 1993-08-07 | 1995-02-21 | Shinagawa Refract Co Ltd | Monolithic refractory |
| WO2001068555A1 (en) * | 2000-03-14 | 2001-09-20 | Krosakiharima Coporation | Monolithic refractory for waste pyrolysis furnace and waste pyrolysis furnace using the same |
| JP2002201080A (en) * | 2000-12-27 | 2002-07-16 | Sumitomo Metal Ind Ltd | Using method of scrap refractory and castable refractory |
| JP2002356378A (en) * | 2001-05-31 | 2002-12-13 | Kurosaki Harima Corp | Castable refractory for spout of blast furnace |
| JP2003137664A (en) * | 2001-10-31 | 2003-05-14 | Kawasaki Refract Co Ltd | Monolithic refractory for blast furnace trough |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN106045529A (en) * | 2016-05-31 | 2016-10-26 | 中国冶集团有限公司 | Iron runner castable containing 80% of waste refractories or above |
| CN106045528A (en) * | 2016-05-31 | 2016-10-26 | 中国冶集团有限公司 | Iron runner ramming material containing 90% of waste refractories or above |
| CN107141001A (en) * | 2017-06-05 | 2017-09-08 | 武汉钢铁有限公司 | Compound fibre reinforced iron runner castable |
| CN108822873A (en) * | 2018-05-24 | 2018-11-16 | 南京紫阳新材料科技有限公司 | A kind of Performances of Novel Nano-Porous meter level micropore heat-barrier material and preparation method thereof |
| CN110372339A (en) * | 2019-07-19 | 2019-10-25 | 中冶武汉冶金建筑研究院有限公司 | A kind of long-life iron runner castable and its construction method |
| CN110981514A (en) * | 2019-12-30 | 2020-04-10 | 无锡市宝宜耐火材料有限公司 | Refractory castable for blast furnace tapping channel |
| CN112830772A (en) * | 2021-01-22 | 2021-05-25 | 中冶武汉冶金建筑研究院有限公司 | Submicron silica micropowder combined iron runner castable and preparation method thereof |
-
2021
- 2021-07-09 CN CN202110775885.2A patent/CN113526967B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284808A (en) * | 1990-05-14 | 1994-02-08 | Minteq International Inc. | Dry refractory composition |
| JPH0748179A (en) * | 1993-08-07 | 1995-02-21 | Shinagawa Refract Co Ltd | Monolithic refractory |
| WO2001068555A1 (en) * | 2000-03-14 | 2001-09-20 | Krosakiharima Coporation | Monolithic refractory for waste pyrolysis furnace and waste pyrolysis furnace using the same |
| JP2002201080A (en) * | 2000-12-27 | 2002-07-16 | Sumitomo Metal Ind Ltd | Using method of scrap refractory and castable refractory |
| JP2002356378A (en) * | 2001-05-31 | 2002-12-13 | Kurosaki Harima Corp | Castable refractory for spout of blast furnace |
| JP2003137664A (en) * | 2001-10-31 | 2003-05-14 | Kawasaki Refract Co Ltd | Monolithic refractory for blast furnace trough |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN106045529A (en) * | 2016-05-31 | 2016-10-26 | 中国冶集团有限公司 | Iron runner castable containing 80% of waste refractories or above |
| CN106045528A (en) * | 2016-05-31 | 2016-10-26 | 中国冶集团有限公司 | Iron runner ramming material containing 90% of waste refractories or above |
| CN107141001A (en) * | 2017-06-05 | 2017-09-08 | 武汉钢铁有限公司 | Compound fibre reinforced iron runner castable |
| CN108822873A (en) * | 2018-05-24 | 2018-11-16 | 南京紫阳新材料科技有限公司 | A kind of Performances of Novel Nano-Porous meter level micropore heat-barrier material and preparation method thereof |
| CN110372339A (en) * | 2019-07-19 | 2019-10-25 | 中冶武汉冶金建筑研究院有限公司 | A kind of long-life iron runner castable and its construction method |
| CN110981514A (en) * | 2019-12-30 | 2020-04-10 | 无锡市宝宜耐火材料有限公司 | Refractory castable for blast furnace tapping channel |
| CN112830772A (en) * | 2021-01-22 | 2021-05-25 | 中冶武汉冶金建筑研究院有限公司 | Submicron silica micropowder combined iron runner castable and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 不同氧化硅微粉对水泥水化和浇注料性能的影响;刘雅贤;《中国学术期刊（光盘版）》;20181215;第B015-193页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113526967A (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107903047B (en) | Iron runner castable containing more than 70% of high-alumina aggregate | |
| CN109467418B (en) | Long-life iron runner castable for hot repair | |
| CN106045528B (en) | A kind of iron runner ramming mass containing 90% or more waste and old resistance to material | |
| CN111574206A (en) | Anti-corrosion iron runner castable for large blast furnace | |
| CN106278324A (en) | A kind of modified high-purity magnesium-aluminum spinel composite brick and preparation method thereof | |
| CN110372339A (en) | A kind of long-life iron runner castable and its construction method | |
| CN112341161B (en) | Anti-stripping unburned magnesium-calcium-carbon brick and preparation method thereof | |
| CN112830772A (en) | Submicron silica micropowder combined iron runner castable and preparation method thereof | |
| CN106045529A (en) | Iron runner castable containing 80% of waste refractories or above | |
| CN102796833A (en) | Modification technology of iron reduction and component reconstruction for molten slag | |
| CN110723963A (en) | Blast furnace tapping channel castable containing nano alumina and preparation method thereof | |
| CN108754143A (en) | A method of producing Antaciron using metallurgical white residue | |
| CN113480294A (en) | High-performance high-alumina iron runner castable | |
| CN110372406A (en) | A kind of converter slag-resisting Al2O3Outer nozzle brick of-C and preparation method thereof | |
| CN113526967B (en) | Iron runner castable taking waste refractory as main material | |
| CN112094125B (en) | Low-thermal-conductivity low-thermal-expansion magnesium-based raw material and preparation method thereof | |
| CN115572154B (en) | Environment-friendly iron runner castable for swing tap and application method thereof | |
| CN111170749A (en) | Method for preparing fused forsterite by utilizing magnesite tailings through electric melting | |
| CN108558375A (en) | A kind of preparation method of big blast furnace long-life main iron runner pouring material | |
| CN102557686B (en) | Rare-earth modified aluminum nitrogen swing spout castables | |
| CN115536370A (en) | Aluminum-magnesium dry vibration material containing calcium hexaluminate | |
| CN110550960B (en) | Method for producing zinc smelting kiln lining brick by smelting chromium slag | |
| CN106977181A (en) | A kind of BOF Hood magnesium-aluminum-calcium titanium carbon brick and preparation method thereof | |
| CN111087230A (en) | Green environment-friendly high-strength oxidation-resistant infiltration tapping channel castable and preparation method thereof | |
| CN116143529B (en) | Environment-friendly iron runner castable and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |