CN114380605A - Rock wool coating material for hot blast stove and preparation method thereof - Google Patents
Rock wool coating material for hot blast stove and preparation method thereof Download PDFInfo
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- CN114380605A CN114380605A CN202111652763.0A CN202111652763A CN114380605A CN 114380605 A CN114380605 A CN 114380605A CN 202111652763 A CN202111652763 A CN 202111652763A CN 114380605 A CN114380605 A CN 114380605A
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- rock wool
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- brick sand
- silica
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- 239000011490 mineral wool Substances 0.000 title claims abstract description 49
- 239000011248 coating agent Substances 0.000 title claims abstract description 26
- 238000000576 coating method Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000011449 brick Substances 0.000 claims abstract description 50
- 239000004576 sand Substances 0.000 claims abstract description 46
- 239000004927 clay Substances 0.000 claims abstract description 43
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 150000004645 aluminates Chemical class 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 10
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 10
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007580 dry-mixing Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 15
- 229910001570 bauxite Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 abstract description 11
- 238000005507 spraying Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000009991 scouring Methods 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 229910052570 clay Inorganic materials 0.000 abstract 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 17
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 9
- 235000013339 cereals Nutrition 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000012257 stirred material Substances 0.000 description 2
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/34—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
- C04B2235/34—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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- C—CHEMISTRY; METALLURGY
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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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
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- C—CHEMISTRY; METALLURGY
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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
- C04B2235/50—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
- C04B2235/5216—Inorganic
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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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
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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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- 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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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention provides a rock wool coating for a hot blast stove, which comprises the following components in parts by weight: clay brick sand, silica brick sand, tertiary alumina, clay, silica micropowder, aluminate cement, rock wool fiber, sodium tripolyphosphate and sodium hexametaphosphate; the preparation method comprises the following preparation steps: taking clay brick sand, silica brick sand, third-level alumina, clay, silica micropowder, aluminate cement and sodium tripolyphosphate, and performing pre-mixing to prepare a pre-mixture; putting the premix into a mixing mill, carrying out dry mixing uniformly, and adding water while stirring to obtain a mixed solution; adding rock wool fiber into the mixed solution, and adding water while stirring to obtain rock wool coating material; the method adopts a scientific and reasonable grain grading mode, optimizes the combination of the matrix, and adds a proper amount of silicon superfine powder and water reducing agent, thereby ensuring the high temperature resistance, high strength, scouring resistance and excellent spraying performance of the material.
Description
Technical Field
The invention belongs to the technical field of refractory material preparation, and particularly relates to a rock wool coating for a hot blast stove and a preparation method thereof.
Background
When the blast furnace hot blast stove is used for spraying construction, a part of special parts cannot be sprayed by a spray gun and need to be manually coated, or the spraying amount is small, so that the spraying of the spray gun wastes time and labor, and the spraying of the spray gun also needs to be manually coated. The sprayed layer has the following functions: 1. the heat insulation protection effect is achieved; 2. the air tightness is increased; 3. the furnace shell can be protected for a short time after the working layer and the light bricks are damaged or fall off. The hot-blast furnace body spray coating or the pipeline spray coating that use at present all do not contain the fibre, and the adhesion is not enough when using the spray coating to paint, and the condition of droing is serious, influences the efficiency of construction and the material is extravagant big.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides rock wool coating for a hot blast stove and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the rock wool coating material for the hot blast stove comprises the following components in parts by weight: 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 5-20 parts of rock wool fiber, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate.
Further, Al in clay brick sand2O340-48% of SiO in silica brick sand290-96% of Al in the third-grade bauxite2O355-65% of Al in clay2O3SiO in the silicon micropowder with the content of 30-40%290-96% of Al in aluminate cement2O3The content is 50-58%.
Further, the length of rock wool fibre is 5~25 mm.
Further, the particle size of the clay brick sand is 3-0 mm; the grain size of the silica brick sand is 3-0 mm; the grain size of the third-stage bauxite powder is less than or equal to 0.074 mm; the particle size of the clay powder is less than or equal to 0.074 mm; the particle size of the silicon micro powder is 4.5-5.5 mu m; the particle size of the aluminate cement is less than or equal to 0.045 mm.
A preparation method of rock wool coating for a hot blast stove comprises the following preparation steps:
taking 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate, and performing and mixing to prepare a premix;
step two, putting the premix prepared in the step one into a mixing mill for dry mixing uniformly, and adding water while stirring to obtain mixed pug;
and step three, adding rock wool fibers into the mixed pug obtained in the step two, and adding water while stirring to obtain the rock wool coating material.
Furthermore, the amount of water added in the second step is 1.5-2.5 times of the amount of water added in the third step.
The invention has the beneficial effects that:
1. the clay brick sand and the silica brick sand are used as aggregates, so that the production cost is reduced, and the environment is protected;
2. the method adopts a scientific and reasonable particle grading mode, optimizes the combination of the matrix, and adds a proper amount of silicon ultrafine powder and water reducing agents, namely sodium tripolyphosphate and sodium hexametaphosphate, so that the high temperature resistance, high strength, scouring resistance and excellent spraying performance of the material are ensured;
3. this patent relies on the micro-expansion in the silica brick sand sintering process, and the silica brick is accompanied with SiO in the use promptly2The crystal form is changed, the volume is expanded along with the rise of the temperature, the shrinkage is counteracted, the integrity of the spraying in the using process is ensured, and the cracking is not easy to occur;
4. this patent adds the rock wool fibre, adopts combined material's theory, relies on the fibrous bridging effect of rock wool, extracts effect, stress transfer effect and reduction bulk density's effect, has obtained better effect.
Detailed Description
The embodiments of the present invention are described in detail with reference to specific embodiments, and the embodiments and specific operations are provided in the present embodiment on the premise of the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
The rock wool coating material for the hot blast stove comprises the following components in parts by weight: 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 5-20 parts of rock wool fiber, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate.
Further, Al in clay brick sand2O340-48% of SiO in silica brick sand290-96% of Al in the third-grade bauxite2O355-65% of Al in clay2O3SiO in the silicon micropowder with the content of 30-40%290-96% of Al in aluminate cement2O3The content is 50-58%.
Further, the length of rock wool fibre is 5~25 mm.
Further, the particle size of the clay brick sand is 3-0 mm; the particle size of the silica brick sand is 3-0 mm; the grain size of the third-stage bauxite powder is less than or equal to 0.074 mm; the particle size of the clay powder is less than or equal to 0.074 mm; the particle size of the silicon micro powder is 4.5-5.5 mu m; the particle size of the aluminate cement is less than or equal to 0.045 mm.
A preparation method of rock wool coating for a hot blast stove comprises the following preparation steps:
taking 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate, and performing and mixing to prepare a premix;
step two, putting the premix prepared in the step one into a mixing mill for dry mixing uniformly for 5-8 min, and adding water while stirring to obtain mixed pug;
and step three, adding rock wool fibers into the mixed pug obtained in the step two, and adding water while stirring to obtain the rock wool coating material. According to the preparation method, the mixture A is mixed and ground, and then the additive B is added, so that the rock wool can be dispersed in the mixture;
furthermore, the amount of water added in the second step is 1.5-2.5 times of the amount of water added in the third step.
This patent relies on the fibrous bridging effect of rock wool, extracts effect, stress transfer effect and reduction bulk density's effect, has obtained satisfied effect, and the fibrous bridging effect principle of rock wool is similar with the principle of adding the wheat straw in reinforced concrete and the adobe wall, and the rock wool fibre distributes in the smearing material, and length 5~25mm can prevent the fracture, drop.
Example 1
Preparing and mixing clay brick sand, silica brick sand, tertiary bauxite powder, clay powder, silica micropowder, CA-50 aluminate cement, sodium tripolyphosphate and sodium hexametaphosphate to prepare a premix A, preparing filiform fibers into an additive B, and respectively packaging the mixture A and the additive B; the meaning of respectively packaging the mixture A and the additive B is that the mixture A and the additive B are respectively packaged after being respectively prepared, so as to prepare for the next procedure;
a preparation method of rock wool coating for a hot blast stove comprises the following raw materials in percentage by weight:
the adding amount of the clay brick sand is 40 percent; the adding amount of the silica brick sand is 20 percent; the adding amount of the third-grade bauxite is 8 percent; the addition of the clay is 10 percent; the adding amount of the silicon micro powder is 2 percent; the adding amount of the CA-50 aluminate cement is 20 percent; the adding amount of the rock wool fiber is 12 percent (additionally added); 0.15 percent of sodium tripolyphosphate is added (additionally added), and 0.05 percent of sodium hexametaphosphate is added.
A method for preparing low-heat-conduction anti-scouring rock wool spray paint comprises the following steps:
the first step is to prepare and mix clay brick sand, silica brick sand, three-level bauxite powder, clay powder, silica micropowder, CA-50 aluminate cement and sodium tripolyphosphate to prepare a premix A;
step two: then respectively packaging the mixture A and the additive B in the step one;
step three: adding the premix A into a mixing mill, carrying out dry mixing uniformly, and adding water while stirring;
step four: and slowly adding the premix B while stirring, and then adding half of the water in the rest steps, wherein the water addition amount can be properly adjusted according to the fluidity required by construction, and the mixing and grinding time is based on obtaining uniform stirred materials.
The indexes of the rock wool coating measured in the laboratory are as shown in table 1:
table 1 performance index for rock wool coating of example 1
Example 2
The preparation method comprises the steps of preparing a premix A by performing and mixing clay brick sand, silica brick sand, tertiary bauxite powder, clay powder, silicon micropowder, CA-50 aluminate cement and sodium tripolyphosphate, preparing filiform fibers into an additive B, and packaging the mixture A and the additive B respectively;
a rock wool coating for a hot blast stove is prepared from the following raw materials in percentage by weight:
the adding amount of the clay brick sand is 30 percent; the adding amount of the silica brick sand is 25 percent; the addition of the third-grade bauxite is 10 percent; the addition amount of the clay is 5 percent; the adding amount of the silicon micro powder is 5 percent; the adding amount of the CA-50 aluminate cement is 25 percent; the adding amount of the rock wool fiber is 18.0 percent (additionally added); 0.20 percent of sodium tripolyphosphate is added (additionally);
a method for preparing low-heat-conduction anti-scouring rock wool spray paint comprises the following steps:
the first step is to prepare and mix clay brick sand, silica brick sand, three-level bauxite powder, clay powder, silica micropowder, CA-50 aluminate cement and sodium tripolyphosphate to prepare a premix A;
step two: then respectively packaging the mixture A and the additive B in the step one;
step three: adding the premix A into a mixing mill, carrying out dry mixing uniformly, and adding water while stirring;
step four: then slowly adding the premix B while stirring, and then adding half of the water in the third step. The water addition amount can be properly adjusted according to the fluidity required by construction, and the mixing and grinding time is based on obtaining uniform stirred materials.
The indexes of the rock wool coating measured in the laboratory are as shown in table 2:
table 2 performance index of rock wool coating of example 2
From the characterization of the properties of examples 1 and 2 above, see table 3, it can be seen that the rock wool coating has a low thermal conductivity despite its high bulk density.
Table 3 characterization of properties of example 1 and example 2
In conclusion, the clay brick sand and the silica brick sand aggregate are adopted in the invention and are respectively used as the clay waste brick and the siliceous waste brick after being used in the recovery kiln, so that the production cost is reduced and the capital investment is saved under the condition of meeting the performance; meanwhile, waste brick sand is introduced, so that solid waste is utilized, and harmful influence on the environment is reduced; and a scientific and reasonable grain grading mode is adopted, so that the compact packing of grains is easier to achieve, the final strength is improved, the matrix combination is optimized, the superfine powder is added, and the service performance of the material is improved by depending on the reasonable proportion of each component; meanwhile, the rock wool fiber is added, the idea of composite material is adopted, and the satisfied effect is obtained by means of the bridging effect, the pulling-out effect, the stress transfer effect and the effect of reducing the volume density of the rock wool fiber.
It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.
Claims (6)
1. The rock wool coating for the hot blast stove is characterized in that: the material consists of the following components in parts by mass: 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 5-20 parts of rock wool fiber, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate.
2. The rock wool coating for the hot blast stove according to claim 1, characterized in that:
al in clay brick sand2O340-48% of SiO in silica brick sand290-96% of Al in the third-grade bauxite2O355-65% of Al in clay2O3SiO in the silicon micropowder with the content of 30-40%290-96% of Al in aluminate cement2O3The content is 50-58%.
3. The rock wool coating for the hot blast stove according to claim 1, characterized in that: the length of rock wool fibre is 5~25 mm.
4. The rock wool coating for the hot blast stove according to claim 1, characterized in that: the particle size of the clay brick sand is 3-0 mm; the particle size of the silica brick sand is 3-0 mm; the grain size of the third-stage bauxite powder is less than or equal to 0.074 mm; the particle size of the clay powder is less than or equal to 0.074 mm; the particle size of the silicon micro powder is 4.5-5.5 mu m; the particle size of the aluminate cement is less than or equal to 0.045 mm.
5. The preparation method of the rock wool coating for the hot blast stove according to any one of claims 1 to 4, characterized by comprising the following steps: the preparation method comprises the following preparation steps:
taking 30-40 parts of clay brick sand, 20-25 parts of silica brick sand, 8-10 parts of tertiary alumina, 5-10 parts of clay, 2-5 parts of silica micropowder, 20-25 parts of aluminate cement, 0.15-0.2 part of sodium tripolyphosphate and 0.05-0.1 part of sodium hexametaphosphate, and performing and mixing to prepare a premix;
step two, putting the premix prepared in the step one into a mixing mill for dry mixing uniformly, and adding water while stirring to obtain mixed pug;
and step three, adding rock wool fibers into the mixed pug obtained in the step two, and adding water while stirring to obtain the rock wool coating material.
6. The preparation method of the rock wool coating for the hot blast stove according to claim 5, characterized by comprising the following steps: the amount of water added in the second step is 1.5-2.5 times of the amount of water added in the third step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111652763.0A CN114380605B (en) | 2021-12-31 | 2021-12-31 | Rock wool coating material for hot blast stove and preparation method thereof |
Applications Claiming Priority (1)
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Citations (6)
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| GB964148A (en) * | 1962-02-12 | 1964-07-15 | Kaiser Aluminium Chem Corp | Improvements in or relating to refractory compositions |
| CN101062867A (en) * | 2007-04-26 | 2007-10-31 | 武汉钢铁(集团)公司 | Slag antiseizing spraying material for desulfurization hot-metal bottle |
| CN101151497A (en) * | 2005-03-30 | 2008-03-26 | 旭硝子陶瓷株式会社 | Method of applying castable refractory material by spraying |
| CN101279853A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | Ring hearth material of industrial frequency zinc melting channel induction furnace and preparation thereof |
| CN103951444A (en) * | 2014-04-15 | 2014-07-30 | 邹平耀华特耐科技有限公司 | High-thermal-shock-resistance coating for wind chamber of circulating fluidized bed boiler (CFBB) and production process of coating |
| CN106083080A (en) * | 2016-06-08 | 2016-11-09 | 上海彭浦特种耐火材料厂有限公司 | High strength and low cost is high temperature resistant coating and preparation method |
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2021
- 2021-12-31 CN CN202111652763.0A patent/CN114380605B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB964148A (en) * | 1962-02-12 | 1964-07-15 | Kaiser Aluminium Chem Corp | Improvements in or relating to refractory compositions |
| CN101151497A (en) * | 2005-03-30 | 2008-03-26 | 旭硝子陶瓷株式会社 | Method of applying castable refractory material by spraying |
| CN101062867A (en) * | 2007-04-26 | 2007-10-31 | 武汉钢铁(集团)公司 | Slag antiseizing spraying material for desulfurization hot-metal bottle |
| CN101279853A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | Ring hearth material of industrial frequency zinc melting channel induction furnace and preparation thereof |
| CN103951444A (en) * | 2014-04-15 | 2014-07-30 | 邹平耀华特耐科技有限公司 | High-thermal-shock-resistance coating for wind chamber of circulating fluidized bed boiler (CFBB) and production process of coating |
| CN106083080A (en) * | 2016-06-08 | 2016-11-09 | 上海彭浦特种耐火材料厂有限公司 | High strength and low cost is high temperature resistant coating and preparation method |
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| CN114380605B (en) | 2023-02-07 |
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