CN113213954A - High-refractoriness under load mullite composite brick and preparation method thereof - Google Patents
High-refractoriness under load mullite composite brick and preparation method thereof Download PDFInfo
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- CN113213954A CN113213954A CN202110516945.9A CN202110516945A CN113213954A CN 113213954 A CN113213954 A CN 113213954A CN 202110516945 A CN202110516945 A CN 202110516945A CN 113213954 A CN113213954 A CN 113213954A
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- sillimanite
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- 239000011449 brick Substances 0.000 title claims abstract description 70
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 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 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 44
- 229910052851 sillimanite Inorganic materials 0.000 claims abstract description 42
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000012634 fragment Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 19
- 238000000227 grinding Methods 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 abstract description 3
- -1 compound phosphate Chemical class 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract description 3
- 239000010431 corundum Substances 0.000 abstract description 3
- 239000010452 phosphate Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000011819 refractory material Substances 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
-
- 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
- C04B2235/40—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
- C04B2235/428—Silicon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Abstract
The invention relates to the technical field of refractory materials, and discloses a high refractoriness under load mullite composite brick, which comprises the following raw materials in parts by weight: 30-50 parts of corundum-mullite, 150 parts of bauxite chamotte, 3-7 parts of silica powder, 2-6 parts of nano metal aluminum powder, 10-15 parts of sillimanite, 3-5 parts of phosphoric acid and pulp waste liquid accounting for 2-4% of the total weight of the raw materials. According to the high-refractoriness under load mullite composite brick and the preparation method thereof, after the brick blank is placed in the mold, the lifting device drives one plate to move up and down, so that the brick blank is extruded, the internal pores of the prepared composite brick can be greatly reduced, the strength and the comprehensiveness of the composite brick are improved, the phosphoric acid, the silicon micropowder, the nanoscale metal aluminum powder and the fragments are mixed, the phosphoric acid reacts with the silicon-aluminum series and the corundum mullite to generate the compound phosphate with the cementing capacity, the raw materials can be mutually combined, and the internal bonding performance of the composite brick is improved.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a high refractoriness under load mullite composite brick and a preparation method thereof.
Background
The composite brick belongs to a building brick. The core is a solid body made of low-strength material, such as cement expanded perlite; the housing is made of a high strength material, such as cement mortar.
At present, refractory products of high alumina series and mullite series are mostly adopted in industrial kilns, and the problems mainly exist that the refractories are generally low in refractoriness under load due to the problems of high porosity, high Fe2O3 content and unreasonable crystalline phase structure which are determined by ingredients and a production manufacturing process, so that the improvement of the comprehensive use benefit of the industrial kilns is restricted, and therefore, the high-refractoriness under load mullite composite brick and the preparation method thereof are provided for solving the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the high-refractoriness under load mullite composite brick and the preparation method thereof, which have the advantages of high refractoriness under load, small porosity of the composite brick and the like, and solve the problems of low refractoriness under load and high porosity of the composite brick of the prior composite brick.
(II) technical scheme
In order to realize the purposes of high refractoriness under load and small porosity of the composite brick, the invention provides the following technical scheme: the high-refractoriness under load mullite composite brick comprises the following raw materials in parts by weight: 30-50 parts of corundum-mullite, 150 parts of bauxite chamotte, 3-7 parts of silica powder, 2-6 parts of nano metal aluminum powder, 10-15 parts of sillimanite, 3-5 parts of phosphoric acid and pulp waste liquid accounting for 2-4% of the total weight of the raw materials.
Preferably, the bauxite clinker contains 65% of alumina and 1% of iron oxide.
Preferably, the sillimanite is acid-washed fine sillimanite powder, the content of alumina in the sillimanite is 55%, and the content of ferric oxide in the sillimanite is 1%.
Preferably, 30 parts of corundum-mullite, 120 parts of bauxite clinker, 3 parts of silica powder, 2 parts of nano metal aluminum powder, 10 parts of sillimanite and 3 parts of phosphoric acid, and pulp waste liquid accounting for 2 percent of the total weight of the raw materials is added.
Preferably, 40 parts of corundum-mullite, 135 parts of bauxite clinker, 5 parts of silica powder, 4 parts of nano metal aluminum powder, 13 parts of sillimanite and 4 parts of phosphoric acid, and pulp waste liquid accounting for 3 percent of the total weight of the raw materials is added.
Preferably, 50 parts of corundum-mullite, 150 parts of bauxite clinker, 7 parts of silica powder, 6 parts of nano metal aluminum powder, 15 parts of sillimanite and 5 parts of phosphoric acid, and pulp waste liquid accounting for 4 percent of the total weight of the raw materials is additionally added.
A preparation method of a high-refractoriness under load mullite composite brick comprises the following steps:
1) adding 50% of the corundum-mullite, 50% of the bauxite clinker and all the sillimanite into a grinding device for grinding until the corundum-mullite, the bauxite clinker and all the sillimanite are ground into powder, and removing iron by an iron removal process after grinding is finished to obtain powder;
2) crushing the rest 50% of corundum-mullite and 50% of bauxite clinker by a crushing device to obtain granular fragments;
3) mixing the fragments obtained in the step 2) with 5 parts of silica powder, 5 parts of nano-scale metal aluminum powder, 4 parts of phosphoric acid and all the pulp waste liquid by a stirring device to obtain a mixed material;
4) pouring the powder in the step 1) into the stirring device in the step 3) to fully mix the powder and the mixed material to obtain a wet material to be molded;
5) putting the wet material obtained in the step 4) into a mould, and putting the mould into a drying box for drying to obtain a green brick;
6) and then placing the green bricks in the step 5) into a kiln to be fired into the high-refractoriness under load mullite composite brick.
Preferably, after the green bricks are placed in the mold for drying in the step 4), the green bricks are extruded in an extruding mode, the internal temperature of the drying oven in the step 5) is 65 ℃, and the drying time is 32 hours.
Preferably, the firing process in step 6) is to fire in a kiln at 1000 ℃ for 6 hours, and then to fire in a kiln at 1200 ℃ for 12 hours.
(III) advantageous effects
Compared with the prior art, the invention provides the high-refractoriness under load mullite composite brick and the preparation method thereof, and the high-refractoriness under load mullite composite brick has the following beneficial effects:
after the brick blank is placed in a die, a lifting device drives a plate to move up and down, so that the brick blank is extruded, the internal pores of the manufactured composite brick can be greatly reduced, the strength and the comprehensiveness of the composite brick are improved, the phosphoric acid, the silicon micro powder, the nano-scale metal aluminum powder and the fragments are mixed, the phosphoric acid reacts with the silicon-aluminum series and the corundum mullite to generate compound phosphate with cementing capacity, the raw materials can be combined with one another, the internal bonding performance of the composite brick is improved, and the load softening temperature is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the high-refractoriness under load mullite composite brick comprises the following raw materials in parts by weight: 30 parts of corundum-mullite, 120 parts of bauxite chamotte, 3 parts of silica powder, 2 parts of nano-scale metal aluminum powder, 10 parts of sillimanite and 3 parts of phosphoric acid, and is added with paper pulp waste liquid accounting for 2 percent of the total weight of the raw materials, wherein the content of alumina in the bauxite chamotte is 65 percent, the content of iron oxide in the bauxite chamotte is 1 percent, the sillimanite is acid-washed sillimanite fine powder, the content of alumina in the sillimanite is 55 percent, and the content of iron oxide in the sillimanite is 1 percent.
A preparation method of a high-refractoriness under load mullite composite brick comprises the following steps:
1) adding 50% of corundum-mullite, 50% of bauxite clinker and all sillimanite into a grinding device for grinding until the corundum-mullite, the bauxite clinker and all the sillimanite are ground into powder, and removing iron by an iron removal process after grinding is finished to obtain powder;
2) crushing the rest 50% of corundum-mullite and 50% of bauxite clinker by a crushing device to obtain granular fragments;
3) mixing the fragments obtained in the step 2) with 5 parts of silica powder, 5 parts of nano-scale metal aluminum powder, 4 parts of phosphoric acid and all the pulp waste liquid by a stirring device to obtain a mixed material;
4) pouring the powder in the step 1) into the stirring device in the step 3) to fully mix the powder and the mixed material to obtain a wet material to be molded;
5) putting the wet material obtained in the step 4) into a mold, putting the mold into a drying box for drying to obtain a green brick, and extruding the green brick in the step 4) in an extruding manner after the green brick is put into the mold for drying, wherein the internal temperature of the drying box in the step 5) is 65 ℃, and the drying time is 32 hours;
6) and then placing the green bricks in the step 5) into a kiln to be fired into the high-refractoriness mullite composite brick at high temperature, wherein the firing process in the step 6) comprises the steps of firing in the kiln at 1000 ℃ for 6 hours, and then turning to the kiln at 1200 ℃ for firing for 12 hours.
Example two:
the high-refractoriness under load mullite composite brick comprises the following raw materials in parts by weight: 40 parts of corundum-mullite, 135 parts of bauxite clinker, 5 parts of silica powder, 4 parts of nano-scale metal aluminum powder, 13 parts of sillimanite and 4 parts of phosphoric acid, and pulp waste liquor accounting for 3 percent of the total weight of the raw materials is added, wherein the content of alumina in the bauxite clinker is 65 percent, the content of iron oxide in the bauxite clinker is 1 percent, the sillimanite is acid-washed sillimanite fine powder, the content of alumina in the sillimanite is 55 percent, and the content of iron oxide in the sillimanite is 1 percent.
A preparation method of a high-refractoriness under load mullite composite brick comprises the following steps:
1) adding 50% of corundum-mullite, 50% of bauxite clinker and all sillimanite into a grinding device for grinding until the corundum-mullite, the bauxite clinker and all the sillimanite are ground into powder, and removing iron by an iron removal process after grinding is finished to obtain powder;
2) crushing the rest 50% of corundum-mullite and 50% of bauxite clinker by a crushing device to obtain granular fragments;
3) mixing the fragments obtained in the step 2) with 5 parts of silica powder, 5 parts of nano-scale metal aluminum powder, 4 parts of phosphoric acid and all the pulp waste liquid by a stirring device to obtain a mixed material;
4) pouring the powder in the step 1) into the stirring device in the step 3) to fully mix the powder and the mixed material to obtain a wet material to be molded;
5) putting the wet material obtained in the step 4) into a mold, putting the mold into a drying box for drying to obtain a green brick, and extruding the green brick in the step 4) in an extruding manner after the green brick is put into the mold for drying, wherein the internal temperature of the drying box in the step 5) is 65 ℃, and the drying time is 32 hours;
6) and then placing the green bricks in the step 5) into a kiln to be fired into the high-refractoriness mullite composite brick at high temperature, wherein the firing process in the step 6) comprises the steps of firing in the kiln at 1000 ℃ for 6 hours, and then turning to the kiln at 1200 ℃ for firing for 12 hours.
Example three:
the high-refractoriness under load mullite composite brick comprises the following raw materials in parts by weight: 50 parts of corundum-mullite, 150 parts of bauxite clinker, 7 parts of silica powder, 6 parts of nano-scale metal aluminum powder, 15 parts of sillimanite and 5 parts of phosphoric acid, and pulp waste liquid accounting for 4% of the total weight of the raw materials is added, wherein the content of alumina in the bauxite clinker is 65%, the content of iron oxide in the bauxite clinker is 1%, the sillimanite is acid-washed sillimanite fine powder, the content of alumina in the sillimanite is 55%, and the content of iron oxide in the sillimanite is 1%.
A preparation method of a high-refractoriness under load mullite composite brick comprises the following steps:
1) adding 50% of corundum-mullite, 50% of bauxite clinker and all sillimanite into a grinding device for grinding until the corundum-mullite, the bauxite clinker and all the sillimanite are ground into powder, and removing iron by an iron removal process after grinding is finished to obtain powder;
2) crushing the rest 50% of corundum-mullite and 50% of bauxite clinker by a crushing device to obtain granular fragments;
3) mixing the fragments obtained in the step 2) with 5 parts of silica powder, 5 parts of nano-scale metal aluminum powder, 4 parts of phosphoric acid and all the pulp waste liquid by a stirring device to obtain a mixed material;
4) pouring the powder in the step 1) into the stirring device in the step 3) to fully mix the powder and the mixed material to obtain a wet material to be molded;
5) putting the wet material obtained in the step 4) into a mold, putting the mold into a drying box for drying to obtain a green brick, and extruding the green brick in the step 4) in an extruding manner after the green brick is put into the mold for drying, wherein the internal temperature of the drying box in the step 5) is 65 ℃, and the drying time is 32 hours;
6) and then placing the green bricks in the step 5) into a kiln to be fired into the high-refractoriness mullite composite brick at high temperature, wherein the firing process in the step 6) comprises the steps of firing in the kiln at 1000 ℃ for 6 hours, and then turning to the kiln at 1200 ℃ for firing for 12 hours.
The invention has the beneficial effects that: after the brick blank is placed in a die, a lifting device drives a plate to move up and down, so that the brick blank is extruded, the internal pores of the manufactured composite brick can be greatly reduced, the strength and the comprehensiveness of the composite brick are improved, the phosphoric acid, the silicon micro powder, the nano-scale metal aluminum powder and the fragments are mixed, the phosphoric acid reacts with the silicon-aluminum series and the corundum mullite to generate compound phosphate with cementing capacity, the raw materials can be combined with one another, the internal bonding performance of the composite brick is improved, and the load softening temperature is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The high-refractoriness under load mullite composite brick is characterized by comprising the following raw materials in parts by weight: 30-50 parts of corundum-mullite, 150 parts of bauxite chamotte, 3-7 parts of silica powder, 2-6 parts of nano metal aluminum powder, 10-15 parts of sillimanite, 3-5 parts of phosphoric acid and pulp waste liquid accounting for 2-4% of the total weight of the raw materials.
2. The high refractoryless under load mullite composite brick according to claim 1, wherein the bauxite chamotte has an alumina content of 65% and the bauxite chamotte has an iron oxide content of 1%.
3. The high-refractoriness under load mullite composite brick according to claim 1, wherein said sillimanite is refined powder of acid-washed sillimanite, wherein the content of alumina in said sillimanite is 55%, and the content of iron oxide in said sillimanite is 1%.
4. The high-refractoriness under load mullite composite brick according to claim 1, comprises the following raw materials in parts by weight: 30 parts of corundum-mullite, 120 parts of bauxite clinker, 3 parts of silica powder, 2 parts of nano metal aluminum powder, 10 parts of sillimanite and 3 parts of phosphoric acid, and pulp waste liquid accounting for 2 percent of the total weight of the raw materials is added.
5. The high-refractoriness under load mullite composite brick according to claim 1, comprises the following raw materials in parts by weight: 40 parts of corundum-mullite, 135 parts of bauxite clinker, 5 parts of silica powder, 4 parts of nano metal aluminum powder, 13 parts of sillimanite and 4 parts of phosphoric acid, and pulp waste liquid accounting for 3 percent of the total weight of the raw materials is added.
6. The high-refractoriness under load mullite composite brick according to claim 1, comprises the following raw materials in parts by weight: 50 parts of corundum-mullite, 150 parts of bauxite clinker, 7 parts of silica powder, 6 parts of nano metal aluminum powder, 15 parts of sillimanite and 5 parts of phosphoric acid, and pulp waste liquid accounting for 4 percent of the total weight of the raw materials is added.
7. The preparation method of the high-refractoriness under load mullite composite brick is characterized by comprising the following steps:
1) adding 50% of the corundum-mullite, 50% of the bauxite clinker and all the sillimanite into a grinding device for grinding until the corundum-mullite, the bauxite clinker and all the sillimanite are ground into powder, and removing iron by an iron removal process after grinding is finished to obtain powder;
2) crushing the rest 50% of corundum-mullite and 50% of bauxite clinker by a crushing device to obtain granular fragments;
3) mixing the fragments obtained in the step 2) with 5 parts of silica powder, 5 parts of nano-scale metal aluminum powder, 4 parts of phosphoric acid and all the pulp waste liquid by a stirring device to obtain a mixed material;
4) pouring the powder in the step 1) into the stirring device in the step 3) to fully mix the powder and the mixed material to obtain a wet material to be molded;
5) putting the wet material obtained in the step 4) into a mould, and putting the mould into a drying box for drying to obtain a green brick;
6) and then placing the green bricks in the step 5) into a kiln to be fired into the high-refractoriness under load mullite composite brick.
8. The high-load-softness mullite composite brick as claimed in claim 7, wherein the green brick in step 4) is extruded by means of extrusion after being placed in a mold for drying, and the drying time in the drying oven in step 5) is 32 hours at an internal temperature of 65 ℃.
9. The high refractoriness under load mullite composite brick according to claim 7, wherein the firing process in step 6) is performed in a kiln at 1000 ℃ for 6 hours, and then in a kiln at 1200 ℃ for 12 hours.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439979A (en) * | 2008-12-13 | 2009-05-27 | 郑州顺兴耐火材料有限公司 | High refractoriness under load and thermal shock resistant fireproof brick |
| CN103664210A (en) * | 2013-12-09 | 2014-03-26 | 湖南湘钢瑞泰科技有限公司 | Composite brick and preparation method thereof |
| CN103833386A (en) * | 2012-12-04 | 2014-06-04 | 江苏顺星耐火科技有限公司 | High-wear-resistance Guimo brick and preparation method thereof |
| CN104876609A (en) * | 2015-05-29 | 2015-09-02 | 柳州普亚贸易有限公司 | Thermal-shock resistant refractory brick |
| CN107602098A (en) * | 2017-10-30 | 2018-01-19 | 孝义市和中兴矿产有限公司 | Aluminium brick and preparation method thereof in a kind of high RUL |
-
2021
- 2021-05-12 CN CN202110516945.9A patent/CN113213954A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439979A (en) * | 2008-12-13 | 2009-05-27 | 郑州顺兴耐火材料有限公司 | High refractoriness under load and thermal shock resistant fireproof brick |
| CN103833386A (en) * | 2012-12-04 | 2014-06-04 | 江苏顺星耐火科技有限公司 | High-wear-resistance Guimo brick and preparation method thereof |
| CN103664210A (en) * | 2013-12-09 | 2014-03-26 | 湖南湘钢瑞泰科技有限公司 | Composite brick and preparation method thereof |
| CN104876609A (en) * | 2015-05-29 | 2015-09-02 | 柳州普亚贸易有限公司 | Thermal-shock resistant refractory brick |
| CN107602098A (en) * | 2017-10-30 | 2018-01-19 | 孝义市和中兴矿产有限公司 | Aluminium brick and preparation method thereof in a kind of high RUL |
Non-Patent Citations (5)
| Title |
|---|
| 徐平坤: "硅莫砖的研究", 《耐火与石灰》 * |
| 李庭寿: "《耐火材料科技进展》", 31 July 1997 * |
| 白纪周等: "莫来石复合砖研制及在高炉上的应用", 《炼铁》 * |
| 钟香崇: "新一代矾土基耐火材料", 《硅酸盐通报》 * |
| 鞍山钢铁学院耐火材料教研室编: "《耐火材料生产》", 28 February 1981 * |
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