CN113121211A - High-strength refractory mortar and preparation method thereof - Google Patents
High-strength refractory mortar and preparation method thereof Download PDFInfo
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- CN113121211A CN113121211A CN202110365518.5A CN202110365518A CN113121211A CN 113121211 A CN113121211 A CN 113121211A CN 202110365518 A CN202110365518 A CN 202110365518A CN 113121211 A CN113121211 A CN 113121211A
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 75
- 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 33
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 16
- 239000010431 corundum Substances 0.000 claims abstract description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 14
- 239000010445 mica Substances 0.000 claims abstract description 14
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 14
- 239000000440 bentonite Substances 0.000 claims abstract description 12
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004368 Modified starch Substances 0.000 claims abstract description 10
- 229920000881 Modified starch Polymers 0.000 claims abstract description 10
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 10
- 235000019426 modified starch Nutrition 0.000 claims abstract description 10
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 10
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 10
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 10
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010443 kyanite Substances 0.000 claims abstract description 9
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011499 joint compound Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract description 2
- 239000004927 clay Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000011449 brick Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007580 dry-mixing Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- -1 machinery Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate 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
- C04B35/01—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
-
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- 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
-
- 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
- C04B2235/44—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, hypophosphite
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
-
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
- C04B2235/9615—Linear firing shrinkage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to high-strength refractory mortar and a preparation method thereof. The high-strength refractory mortar comprises the following components in percentage by weight: 50-70% of white corundum powder, 10-20% of high-alumina powder, 3-6% of superfine alumina powder, 5-8% of kyanite powder, 4-6% of white mud, 1-1.5% of modified starch, 1-2% of bentonite, 1-2% of lithium mica powder, 0.2-0.5% of sodium carboxymethylcellulose and 0.2-0.5% of sodium tripolyphosphate. The invention improves the low-temperature performance of the traditional daub, and the adhesive force is strong after the construction is finished and the daub is naturally dried; the service temperature is 25-1300 ℃, the strength is high after normal temperature drying, the defect that the traditional daub has no normal temperature strength is overcome, and the refractoriness reaches 1810 ℃ after high temperature sintering.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and relates to high-strength refractory mortar for building, repairing, smearing and spraying refractory bricks of industrial kilns, in particular to high-strength refractory mortar and a manufacturing method thereof.
Background
The traditional daub is fire-hardened daub, namely the daub can generate strength only at high temperature, and the normal temperature strength is very low, so that the characteristic is unsafe for the use conditions of a rotary kiln which needs to be constructed simultaneously; in addition, the working temperature of the uppermost part or the lowermost part of some kilns is not high, so that the cement cannot generate hardness, and the refractory bricks are easy to be combined insecurely to cause brick dropping.
Disclosure of Invention
The invention aims to provide a high-strength refractory mortar and a preparation method thereof, which can overcome the technical defects of the traditional mortar, can generate enough strength at normal temperature, can increase the strength along with the rise of the temperature of a kiln after being heated, has simple production process and low cost, and controls the consistency of the mortar by using tap water to add water according to the condition of the kiln when in use.
The invention adopts the following technical scheme for achieving the purpose:
the high-strength refractory mortar comprises the following components in percentage by weight: 50-70% of white corundum powder, 10-20% of high-alumina powder, 3-6% of superfine alumina powder, 5-8% of kyanite powder, 4-6% of white mud, 1-1.5% of modified starch, 1-2% of bentonite, 1-2% of lithium mica powder, 0.2-0.5% of sodium carboxymethylcellulose and 0.2-0.5% of sodium tripolyphosphate.
The white corundum powder is calcined white corundum powder, the granularity of the calcined white corundum powder is more than 325 meshes, and the content of aluminum oxide is not lower than 99%. The granularity of the high-alumina powder is not more than 1 mm, and the content of alumina is not less than 86%.
The granularity of the superfine alumina powder is 2-5 microns, and the content of alumina is not less than 99%.
The content of aluminum oxide in the cyanite powder is not less than 57%.
K in the lithium mica powder2O+Na2The content of O is not less than 8 percent, and the content of F is not more than 5 percent. The water-adding expansion multiple of the bentonite is not less than 10.
The method for manufacturing the high-strength refractory mortar comprises the following specific steps:
1) weighing five powder materials of white corundum powder, superfine alumina powder, high-alumina powder, lithium mica powder and bentonite according to a formula proportion, and fully and uniformly mixing;
2) weighing white mud, sodium carboxymethylcellulose, modified starch, sodium tripolyphosphate and kyanite powder according to a formula proportion, and fully and uniformly mixing;
3) forcibly mixing the mixed materials obtained in the step 1) and the step 2), and uniformly stirring to obtain powdery high-strength refractory mortar; then discharging, weighing, packaging and warehousing; the normal-temperature rupture strength of the high-strength refractory mortar is 1.5-2.4 MPa; the use temperature of the high-strength refractory mortar is 25-1300 ℃, and the refractoriness reaches 1810 ℃ after high-temperature sintering;
4) when the mortar is used by a user, materials are fed according to the construction amount, tap water accounting for 20-30% of the weight of the mortar is added according to local climatic conditions, mechanical stirring is carried out, and manual stirring can be carried out in a small amount, but the stirring time is not less than 10 minutes.
The invention adopts calcined white corundum powder and high-alumina powder as substrates, the addition of the cyanite powder is used for improving the high-temperature expansibility of the daub, the addition of the lithium mica powder is used for improving the sintering performance of the daub, the addition of the ultrafine alumina powder is used for improving the compactness of the daub and reducing the porosity, the addition of the bentonite is used for improving the water retention and expansibility of the daub, and under the condition of adding the white clay, the production of a mullite phase at high temperature is facilitated, and the fire resistance can reach more than 1800 ℃.
The mechanism of action of the low-temperature strength is as follows: the construction performance is improved by utilizing the adhesive property and thixotropy of the white clay, the white clay and the matrix jointly generate ceramic sintering at high temperature to generate high strength, the sodium carboxymethyl cellulose is added to improve the plasticity of the white clay and prevent water in the white clay from being segregated and layered, the modified starch is added to generate normal temperature strength, the sodium tripolyphosphate is added to increase the dispersibility of the matrix and prevent the white clay, the lithium mica powder and the superfine alumina powder from being agglomerated after being added with water, and the white clay, the lithium mica powder and the superfine alumina powder have a water reducing effect, reduce the water consumption and accelerate the natural drying process.
Compared with the traditional daub, the high-strength refractory daub and the manufacturing method thereof provided by the invention have the following characteristics by adopting the technical scheme:
1) the daub is air-hardening daub, namely, the daub can generate strength in a normal-temperature environment without being dried and heated, and the normal-temperature breaking strength is 1.5-2.4MPa, so that the daub can meet the resistance of external force loads such as masonry rotation, displacement, vibration and the like in a normal-temperature state before the lining masonry is put into operation.
2) The adhesive strength is high, the breaking strength is stably increased from 1.5-2.4MPa of the breaking strength of three days after drying at normal temperature to 1400 ℃ for 3 hours, the breaking strength is 7-10 MPa, the strength is not low, the situation that the furnace temperature increasing strength is increased is ensured, the kiln masonry has better overall performance, the fire fleeing and smoke leakage of the furnace wall are effectively prevented, the brick is cracked and falls off, and the service life of the kiln is prolonged.
3) The high-strength refractory mortar has high hardness, the hardness of the brick joints of the high-strength refractory mortar reaches 6-7 Mohs, and is 1-2 higher than that of a parent material (high-alumina brick), so that the thermal stability, scouring resistance and wear resistance of the kiln masonry are improved.
4) Good construction performance, convenient use and work efficiency improvement. The daub is made of water-soluble solid powder binder, and when it is used, according to the requirements of furnace variety and position construction process the water consumption can be flexibly controlled to control consistency, and its building hand feeling is good, and it is not stuck and does not flow.
5) The powder is convenient to transport, only 20-30% of water is needed to be added when the powder is used, the powder is uniformly stirred, and the powder is convenient for users.
The present invention will be described in detail with reference to specific examples:
the high-strength refractory mortar comprises the following components in percentage by weight: 50-70% of white corundum powder, 10-20% of high-alumina powder, 3-6% of superfine alumina powder, 5-8% of kyanite powder, 4-6% of white mud, 1-1.5% of modified starch, 1-2% of bentonite, 1-2% of lithium mica powder, 0.2-0.5% of sodium carboxymethylcellulose and 0.2-0.5% of sodium tripolyphosphate.
The first embodiment is as follows:
1) weighing 55 kg of matrix material white corundum powder (the granularity is more than 325 meshes, the content of aluminum oxide is not less than 99%), 18.5 kg of high-alumina powder (the granularity is not more than 1 mm, and the content of aluminum oxide is not less than 86%), 6 kg of superfine alumina powder (the granularity is 2-5 microns, and the content of aluminum oxide is not less than 99%), 2 kg of lithium mica powder (the content of K2O + Na2O is not less than 8%, and the content of F is not more than 5%), and 2 kg of bentonite, adding into a mixer, sealing, dry-mixing for 5 minutes, and discharging for later use;
2) weighing 6 kg of white mud, 0.5 kg of sodium carboxymethylcellulose, 1.5 kg of modified starch, 0.5 kg of sodium tripolyphosphate and 8 kg of kyanite powder (the content of aluminum oxide is not lower than 57%), adding the materials into a stirrer, stirring for 3 minutes, and fully and uniformly mixing the materials.
3) And (3) feeding the materials prepared in the steps (1) and (2) into a stirrer, uniformly stirring and packaging to obtain 100 kg of the high-strength refractory mortar, and adding 20-30 kg of tap water when the high-strength refractory mortar is used, and uniformly stirring for use.
Example two:
1) weighing 60 kg of white corundum powder, 20 kg of high-alumina powder, 5 kg of superfine alumina powder, 1.4 kg of lithium mica powder and 1 kg of bentonite, adding the materials into a mixer, sealing, dry-mixing for 5 minutes, and discharging for later use;
2) 5 kg of white mud, 0.3 kg of sodium carboxymethylcellulose, 1 kg of modified starch, 0.3 kg of sodium tripolyphosphate and 6 kg of kyanite powder are added into a stirrer for mixing and stirring for 3 minutes, and the materials are fully and uniformly mixed.
3) 100 kg of the high strength refractory mortar was prepared as in example 1.
Example three:
1) weighing 70 kg of white corundum powder, 14 kg of high-alumina powder, 3 kg of superfine alumina powder, 1.2 kg of lithium mica powder and 1 kg of bentonite, adding the materials into a mixer, sealing, dry-mixing for 5 minutes, and discharging for later use;
2) 4 kg of white mud, 0.4 kg of sodium carboxymethylcellulose, 1.1 kg of modified starch, 0.3 kg of sodium tripolyphosphate and 5 kg of kyanite powder are added into a stirrer for mixing and stirring for 3 minutes, and the materials are fully and uniformly mixed.
3) 100 kg of the high strength refractory mortar was prepared as in example 1.
According to the formula and the configuration method, the prepared cement mortar is prepared into test blocks, and the test blocks are respectively subjected to the technical performance tests of flexural strength, refractoriness under load and the like according to the national standard, and compared with common phosphate slurry and high-alumina fire clay, the test blocks have the following results:
as can be seen from the table above, the high-strength refractory mortar of the formula has greatly improved performance compared with high-alumina cement and phosphate slurry, and particularly has the breaking strength after being burnt at 1400 ℃, which is very important for kilns under the high-temperature condition. The strength of the product reaches 1.83MPa after 3 days at normal temperature, which is not possessed by similar products at home and abroad at present. The formulation is proved by engineering practice to be suitable for masonry, repair and spraying of various industrial kilns in the industries of metallurgy, building materials, machinery, ceramics, electric power and the like, the service life of the kiln is prolonged, and good social and economic benefits are obtained.
Claims (7)
1. The high-strength refractory mortar is characterized in that: the high-strength refractory mortar comprises the following components in percentage by weight: 50-70% of white corundum powder, 10-20% of high-alumina powder, 3-6% of superfine alumina powder, 5-8% of kyanite powder, 4-6% of white mud, 1-1.5% of modified starch, 1-2% of bentonite, 1-2% of lithium mica powder, 0.2-0.5% of sodium carboxymethylcellulose and 0.2-0.5% of sodium tripolyphosphate.
2. The high strength refractory mortar of claim 1, wherein: the white corundum powder is calcined white corundum powder, the granularity of the calcined white corundum powder is more than 325 meshes, and the content of aluminum oxide is not lower than 99%. The granularity of the high-alumina powder is not more than 1 mm, and the content of alumina is not less than 86%.
3. The high strength refractory mortar of claim 1, wherein: the granularity of the superfine alumina powder is 2-5 microns, and the content of alumina is not less than 99%.
4. The high strength refractory mortar of claim 1, wherein: the content of aluminum oxide in the cyanite powder is not less than 57%.
5. The high strength refractory mortar of claim 1, wherein: k in the lithium mica powder2O+Na2The content of O is not less than 8 percent, and the content of F is not more than 5 percent.
6. The high strength refractory mortar of claim 1, wherein: the water-adding expansion multiple of the bentonite is not less than 10.
7. The preparation method of the high-strength refractory mortar according to any one of claims 1 to 6 comprises the following specific steps:
1) weighing five powder materials of white corundum powder, superfine alumina powder, high-alumina powder, lithium mica powder and bentonite according to a formula proportion, and fully and uniformly mixing;
2) weighing white mud, sodium carboxymethylcellulose, modified starch, sodium tripolyphosphate and kyanite powder according to a formula proportion, and fully and uniformly mixing;
3) forcibly mixing the mixed materials obtained in the step 1) and the step 2), and uniformly stirring to obtain powdery high-strength refractory mortar; then discharging, weighing, packaging and warehousing; the normal-temperature rupture strength of the high-strength refractory mortar is 1.5-2.4 MPa; the normal-temperature rupture strength of the high-strength refractory mortar is 1.5-2.4 MPa; the use temperature of the high-strength refractory mortar is 25-1300 ℃, and the refractoriness reaches 1810 ℃ after high-temperature sintering;
4) when the mortar is used by a user, materials are fed according to the construction amount, tap water accounting for 20-30% of the weight of the mortar is added according to local climatic conditions, mechanical stirring is carried out, and manual stirring can be carried out in a small amount, but the stirring time is not less than 10 minutes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217221A (en) * | 2023-01-09 | 2023-06-06 | 中冶武汉冶金建筑研究院有限公司 | Preparation method of high-strength heat-insulating refractory mortar |
| CN116444280A (en) * | 2023-04-18 | 2023-07-18 | 郑州东红耐火材料有限公司 | Special daub for cordierite and preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT7967593A0 (en) * | 1978-03-31 | 1979-03-22 | Comp Generale Electricite | PROCEDURE FOR THE ION FACTORY OF PIECES OF BETA ALKALINE ALUMINA |
| US4174226A (en) * | 1977-09-15 | 1979-11-13 | The Babcock & Wilcox Company | Refractory mix composition and method of preparation |
| CN1040573A (en) * | 1988-08-31 | 1990-03-21 | 江西省工业设备安装公司 | High temperature clay and compound method thereof |
| CN1124749A (en) * | 1995-02-06 | 1996-06-19 | 江西科光窑炉技术开发公司 | Water mixed high-temp. daub |
| CN102765954A (en) * | 2012-08-10 | 2012-11-07 | 萍乡市科兴窑炉材料有限公司 | Water system press-in grouting material used for iron making hot blast heater system and preparation method thereof |
| CN104944978A (en) * | 2015-05-29 | 2015-09-30 | 萍乡市科兴窑炉材料有限公司 | Efficient and energy-saving type high temperature mortar for cement rotary kilns, and preparation method thereof |
| EP3176483A1 (en) * | 2015-12-03 | 2017-06-07 | HILTI Aktiengesellschaft | Fire protection and insulating foam on an inorganic base and use of same |
-
2021
- 2021-04-06 CN CN202110365518.5A patent/CN113121211A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174226A (en) * | 1977-09-15 | 1979-11-13 | The Babcock & Wilcox Company | Refractory mix composition and method of preparation |
| IT7967593A0 (en) * | 1978-03-31 | 1979-03-22 | Comp Generale Electricite | PROCEDURE FOR THE ION FACTORY OF PIECES OF BETA ALKALINE ALUMINA |
| CN1040573A (en) * | 1988-08-31 | 1990-03-21 | 江西省工业设备安装公司 | High temperature clay and compound method thereof |
| CN1124749A (en) * | 1995-02-06 | 1996-06-19 | 江西科光窑炉技术开发公司 | Water mixed high-temp. daub |
| CN102765954A (en) * | 2012-08-10 | 2012-11-07 | 萍乡市科兴窑炉材料有限公司 | Water system press-in grouting material used for iron making hot blast heater system and preparation method thereof |
| CN104944978A (en) * | 2015-05-29 | 2015-09-30 | 萍乡市科兴窑炉材料有限公司 | Efficient and energy-saving type high temperature mortar for cement rotary kilns, and preparation method thereof |
| EP3176483A1 (en) * | 2015-12-03 | 2017-06-07 | HILTI Aktiengesellschaft | Fire protection and insulating foam on an inorganic base and use of same |
Non-Patent Citations (1)
| Title |
|---|
| 付华: "以综合性结合剂制备的气硬性耐火胶泥", 《国外耐火材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217221A (en) * | 2023-01-09 | 2023-06-06 | 中冶武汉冶金建筑研究院有限公司 | Preparation method of high-strength heat-insulating refractory mortar |
| CN116217221B (en) * | 2023-01-09 | 2024-04-09 | 中冶武汉冶金建筑研究院有限公司 | Preparation method of high-strength heat-insulating refractory mortar |
| CN116444280A (en) * | 2023-04-18 | 2023-07-18 | 郑州东红耐火材料有限公司 | Special daub for cordierite and preparation method and application thereof |
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