CN110006258A - A kind of refractory lining and burner anti-thermal shock protective layer of rotary kiln - Google Patents
A kind of refractory lining and burner anti-thermal shock protective layer of rotary kiln Download PDFInfo
- Publication number
- CN110006258A CN110006258A CN201910366188.4A CN201910366188A CN110006258A CN 110006258 A CN110006258 A CN 110006258A CN 201910366188 A CN201910366188 A CN 201910366188A CN 110006258 A CN110006258 A CN 110006258A
- Authority
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- China
- Prior art keywords
- rotary kiln
- high temperature
- refractory lining
- protective layer
- felt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000011241 protective layer Substances 0.000 title claims abstract description 48
- 230000035939 shock Effects 0.000 title claims abstract description 35
- 239000010410 layer Substances 0.000 claims abstract description 35
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000007767 bonding agent Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 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 claims description 11
- 229910052863 mullite Inorganic materials 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000084 colloidal system Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012452 mother liquor Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- 229940009493 gel-one Drugs 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 24
- 239000011819 refractory material Substances 0.000 abstract description 14
- 239000004927 clay Substances 0.000 abstract description 13
- 238000005336 cracking Methods 0.000 abstract description 11
- 230000009970 fire resistant effect Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 239000011449 brick Substances 0.000 description 16
- 230000006378 damage Effects 0.000 description 9
- 238000010304 firing Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 235000009262 Dracaena angustifolia Nutrition 0.000 description 2
- 240000007833 Dracaena angustifolia Species 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000011822 basic refractory Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/002—Inorganic yarns or filaments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/10—Monolithic linings; Supports therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/103—Metal fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/105—Ceramic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/44—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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/522—Oxidic
- C04B2235/5232—Silica or silicates other than aluminosilicates, e.g. quartz
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to a kind of refractory lining of rotary kiln and burner anti-thermal shock protective layers; with the heat-insulation blanket felt plate of anti-thermal shock antiscour anti-strip resistant to high temperature; hygrometric state felted is made using special bonding agent; then it uses and the matched special-purpose fire-resistant clay of rotary kiln refractory lining; paste the surface of rotary kiln refractory lining; after clay and hygrometric state felt dry solidification, it is formed the insulating layer structure of anti-thermal shock anti-strip on the surface of rotary kiln refractory lining, solves the problems, such as that rotary kiln refractory material thermal shock cracking falls off.Using the protective layer of anti-thermal shock antiscour anti-strip refractory lining of the invention; used in the hot end castable surface of rotary kiln coal powder injection pipe; one perimeter surface of coal injection pipe hot end is pasted into refractory mortar; the protective layer of anti-thermal shock antiscour anti-strip can be formed after drying, significantly extend the service life of coal injection pipe.
Description
Technical field
The invention belongs to fire-resistant heat insulating material fields, are related to the refractory lining and burner of rotary kiln, especially a kind of refractory lining
And the anti-thermal shock antiscour anti-strip protective layer of burner.
Background technique
In the industrial production, all it is to realize the sintering purpose of material by rotary kiln there are many technical process, is turning round
In the normal production of kiln, due to the variation of material and the fluctuation of fuel, the flame temperature of firing is caused to be widely varied, it is easy to
Reduce the refractory material in face of flame by its fire resistance due to violent temperature change (being commonly called as thermal shock).Because temperature
Big ups and downs, so that generating huge interior extruding force due to huge thermal expansion effects inside refractory material and (being commonly called as in high temperature
Stress), this huge internal stress can destroy the integral strength of refractory material, and cause refractory material internal tiny crack occur,
The a large amount of accumulative crack for forming macroscopic view of crackle, causes refractory material intensity to be scattered and disappeared, loses due fire resisting and heat-proof quality.
The thermal shock resistance of refractory material is to be exposed to refractory material in 1000 DEG C of hot environments, is put into immediately after
Primary in normal temperature air or water, refractory material not cracking destruction due to such thermal shock referred to as has a thermal shock resistance.It is existing
The rotary kiln overwhelming majority be using refractory brick, it is a small amount of to use castable refractory or castable refractory prefabricated section, it is this
The density of refractory material is all in 2.0~3.0g/cm3Between, general anti-thermal shock cracking destruction ability is 10~15 times.It is more than
For this number refractory lining due to excessive thermal shock stress, the refractory material internal structure in face of high temperature face just will appear micro-crack,
As the accumulative micro-crack of time is accumulated into big crackle, causes refractory surface to form very big loose and cracking, scatter and disappear resistance to
The elevated temperature strength of fiery material forms the damages such as serious peeling and cracking.
The castable refractory in the hot end of the coal injection pipe in rotary kiln is exposed to 1000~1700 DEG C of gas of thermal-flame formation
In atmosphere, when rotary kiln needs are rapidly heated or cool down, the firing rate of coal injection pipe just needs quickly to adjust, and head works as a result,
Therein is exactly that the hot end castable of coal injection pipe needs to be subjected to violent temperature fluctuation, the heat that such severe temperature fluctuations are formed
Shake, leads to coal injection pipe castable cracking damage (being commonly called as quick-fried head) quickly, the castable of damage just loses to the gold in coal injection pipe
Belong to nozzle guard, metallic nozzle high temperature is easy to produce deformation, and the metallic nozzle of deformation will lead to the deformation of flame, the fire of deformation
Flame is just difficult to meet normal flame profile and temperature, and the flame of deformation is also possible to burn refractory lining (the custom lining of rotary kiln wall
Lick kiln lining), lead to local refractory damage, it is serious to need to stop kiln replacement refractory material (being commonly called as digging), it causes huge
Economic loss.
By retrieval, it is not yet found that doing the open article or patent of corresponding Protective strategy to rotary kiln refractory lining and burner
Report.
Summary of the invention
It is an object of the invention to overcome the existing insufficient defect of rotary kiln refractory material thermal shock resistance, provide a kind of resistance to
The anti-thermal shock antiscour anti-strip protective layer of fire lining and burner, the protective layer are attached to the surface of rotary kiln refractory lining, are mentioned with reaching
The purpose of the thermal shock resistance of high refractory lining.
It is well known that the high temperature fiber of more stomatas has fabulous thermal shock resistance, reason is single fiber expanded by heating
When, fibrous external space can will not form huge swelling stress with free extension as compact refractory material, thus, it is micro-
The thermal shock resistance of hole fiber-like material be it is extraordinary, in the thermal cycle under room temperature to 1000 DEG C of environment, can almost bear
Infinitely without destroying and crushing, so, add one layer of fibrous insulating layer on rotary kiln refractory lining surface, forms heat-insulated guarantor
Sheath, the thermal shock that can solve firebrick lining crack and flake off problem.
Using same principle, mixed using aglite powder resistant to high temperature and bonding agent resistant to high temperature, using semar technique
To the refractory lining surface of rotary kiln, the thermal shock that also can solve firebrick lining cracks and flakes off problem for construction or gunite construction.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of protective layer of anti-thermal shock antiscour anti-strip refractory lining, inside the refractory lining of rotary kiln counter-fire face or return
The outer surface of the castable refractory of rotary kiln burner is pasted or one layer of injection or smearing or more thermal insulation layer, forms one layer of heat-insulated buffering
Layer, provides the characteristic of high temperature resistant resistance to erosion anti-thermal shock for firebrick lining, and provide a kind of efficient insulating layer structure.
The thermal insulation layer is mixed by long fibre and/or heat-insulated powder with high temperature resistant bonding agent, is long fibre shape three-dimensional network
Shape structure, long fibre shape three-dimensional network shape contain bonding agent resistant to high temperature, are formed high-strength three dimensional network by thermal at high temperature
Network shape composite material provides high-strength antiscour and efficient thermal insulation layer, to have incomparable excellent thermal shock resistance.
Containing long stapled blanket resistant to high temperature or felt or plate be use high temperature resistant for 1000~1800 DEG C ceramic fiber blanket/
Felt/plate, high silica fiber blanket/felt/plate, aluminium silicate fiber containing zirconia blanket/felt/plate, mullite crystal tapetum fibrosum/felt/plate, aluminium oxide
Crystal fibre blanket/felt/plate one or more.Individual fiber diameter be 3~12 microns, single fiber length be 25~
300 millimeters, which is 80~400Kg/m3, optimum density is 130~300Kg/m3。
Also, it is preferred that, using 1500 DEG C of high temperature resistant of high temperature fiber blanket felt plate, using 1430 DEG C of fibers containing zirconium and 1600
DEG C mullite crystal fiber is mixed according to weight ratio 1:1.Because of 1430 DEG C of long fibre containing zircon ceramic, have extraordinary
Tensile strength and airflow scouring resistant to high temperatures；It is short that 1600 DEG C of crystal fibres resistant to high temperature can be made up, the low characteristic of tensile strength,
Thus 1500 DEG C of high temperature composite fibre being composed have low cost with high temperature resistant again, also have best antiscour
Property.
Moreover, the special high-temperature fibrous thermal blanket/felt/plate is impregnated using high temperature resistant colloidal liquid, the high temperature colloid
It is female for the common high temperature adhesives in market, water glass solution, phosphate dihydrogen aluminum solution, silica solution, Aluminum sol, mullite colloid
Liquid, alumina gel mother liquor mixture or complex sol (solid content 15~70%) that they mix, with this mixed
The dilution of the water of colloidal liquid or this epoxy glue is closed, high temperature fiber blanket felt plate is impregnated, forms special wet felt, the wet felt
With a thickness of 5~50 millimeters, optimal with a thickness of 10~25 millimeters, density is 250~600Kg/m after wet felt is dry3。
Also, it is preferred that using silica solution and Aluminum sol (solid is all levels 30%) according to weight ratio 5~40: 60
~95 are mixed, and the colloid thus mixed has more preferable heat-resisting quantity and caking property, improve the intensity every blanket felt plate.
Moreover, the high temperature clay for pasting wet felt, viscous with acid refractory using the common refractory mortar in market
Patch is using acid mating clay, and with basic refractory using the mating clay of alkalinity, this clay is air hardening refractory clay, from
Room temperature can provide firm caking property to high-temperature.
Furthermore, it is possible to, using the loose wool of high-temperature fibre, be conveyed using the gas suspension of spraying machine using sprayed construction method
The mixing liquid of high temperature resistant colloidal liquid or these colloids is transported to gas containing high-temperature fibre at spray head, then with pump
Around the jet pipe for flowing stock, then high temperature colloid is injected in fibrous air-flow at the miniature liquid nozzle from spray head, shape
At the rhagiocrin fiber stream of mixing, the refractory lining surface of rotary kiln is sprayed and adhered to, forms one layer of fibrous thermal lining, solidification
One layer of heat-barrier coating, 250~600Kg/m of density are formed after drying3。
Furthermore, it is possible to using the heat-insulated powder of heat-resistant light aggregate, for example alumina hollow ball resistant to high temperature, lightweight are not come
Stone particles of aggregates, light weight alumina particles of aggregates, heat-insulated powder the inside are fine according to 2~6% addition high temperature resistants of lightweight powder weight
Dimension, is mixed into mud with high temperature adhesives or colloid, is applied to refractory lining surface and forms protective layer；Or gunite is used,
By heat-insulated powder, high temperature fiber and high temperature resistant bonding agent mixing jetting to the surface of refractory lining, one layer is formed on refractory lining surface
Light heat insulation layer, 300~800Kg/m of porous material density which forms3。
The advantages of the present invention:
1, after using heat insulation felt protective layer of the invention, the heating-up time can shorten more than half, the fuel of saving and comprehensive
Conjunction expense reaches 50% or more, can put into formal production (reducing the baking time of half) in advance；Heat insulation felt protective layer avoids
Destruction of the severe temperature fluctuations of cold kiln heating to refractory lining, the service life of refractory lining are greatly improved.Have
When, according to the needs of production, need to stop every year kiln 5 times, then cold kiln firing up starts 5 times, using protective layer of the invention
Afterwards, fuel and comprehensive cost that 500,000 yuan or more of cold kiln heating is spent can be saved, the cracking feelings of refractory lining are greatly reduced
Condition, to significantly extend the service life of refractory lining.Shorten the time of original firing up half, and increase accordingly revolution
The kiln actual production time improves the yield of rotary kiln, and energy conservation and the effect to lower consumption are clearly.
2, heat insulation felt protective layer of the invention is used on coal injection pipe hot end castable surface, thoroughly solves the resistance to of coal injection pipe
Too short problem of fiery castable service life, ensure that the stability of coal injection pipe flame, thus brings very big energy-saving aspect
Economic benefit.
3, original coal injection pipe hot end castable service life is that just will appear apparent cracking phenomena in 1~2 month, is used
Heat insulation felt protective layer of the invention is behind castable surface, and after service life extends to 4~6 months, hot end castable just starts
Due to heat insulation felt protective layer scaling loss and crack；It is general to return in order to further extend the service life of coal injection pipe hot end castable
Rotary kiln be all be used alternatingly using two sets coal injection pipes, as soon as when the hot end heat insulation felt protective layer scaling loss of coal injection pipe, pull-out kiln
Heat insulation felt protective layer material of the invention is re-pasted outside, when the former coal injection pipe castable surface heat insulation felt protective layer in rotary kiln
When close to scaling loss, replacement is entered at once, and such application method avoids coal injection pipe often more heat-exchange end castable, also avoids
Coal injection pipe because casting is hardening cracked causes flame to deform, and then influences the stabilization of the constant rate of production of kiln lining.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that protective layer is arranged on rotary kiln refractory lining；
(1 be wherein refractory lining, 2 be clay, 3 be protective layer)
Fig. 2 is the structural schematic diagram that protective layer is arranged on rotary kiln coal powder injection pipe.
(4 be wherein burner, 2 be clay, 3 be protective layer)
Specific embodiment
Below with reference to case study on implementation, the present invention is further described, and it is not limited that following case study on implementation, which are illustrative,
, it cannot be limited the scope of protection of the present invention with following case study on implementation.
Embodiment 1:
On the intermediate zone refractory brick surface (1400 DEG C of temperature, about 20 meters of length) of rotary kiln, contain zirconium with 25 mm of thickness
Fibrous insulation (1430 DEG C of maximum operation (service) temperature), using the complex colloid of silica solution and Aluminum sol to impregnate, (weight ratio is molten for silicon
Glue: Aluminum sol=30%: 70%, the concentration of two kinds of glue is all 30% solid content), with high temperature clay, (rotary kiln transition belt is resistance to
The dedicated high temperature resistant clay of firebrick) be pasted on rotary kiln clinkering zone refractory brick surface, through natural drying, fibrofelt formed one
Layer hard protective layer is adhered to the surface of refractory lining, and the density of this layer protective layer of Fibrous insulation containing zirconium is 450Kg/m3, thermally conductive
Coefficient is 0.13W/mK (600 DEG C).
On the clinkering zone refractory brick surface (1600 DEG C of temperature, about 20 meters of length) of revolution, using 30 millimeters, use high temperature resistant
1430 DEG C of fiber containing zirconium and 1600 DEG C of high temperature resistant of mullite crystal fiber are mixed according to 1500 DEG C that weight ratio 1:1 is mixed
Condensating fiber felt is pasted on clinkering zone refractory brick (new lining) or clinkering zone refractory brick table using the common alkaline clay of clinkering zone
The kliner coating surface that face is retained forms heat-barrier coating.
In rotary kiln firing up, this layer of heat insulation felt protective layer can resist the great variety of flame temperature, without cracking
With fall off, when heat insulation felt surface temperature acute variation (room temperature is to 1400~1600 DEG C), due to the heat insulation felt have it is fabulous resistance to
Fire and heat-proof quality, the manyfold so that range of temperature for being transmitted to refractory lining surface behind heat insulation felt has just decayed, lead
Cause the hot-surface temperature variation of refractory brick more steady, refractory brick there can be heat caused by time enough digestion surface temperature rise to answer
Power variation.
Using the rotary kiln refractory lining of this heat insulation felt protective layer, heating curve originally needs to expend 72 hours or more
Technological temperature (1400~1600 DEG C or more) could be reached safely, cold kiln firing up needs the fuel and Integrated Cost spent every time
With being 200,000 yuan or so, and refractory lining surface is very easy to cracked, thus greatly reduces the use of refractory lining
Service life, cylinder of rotary kiln skin temperature can also increase substantially.
When thermal insulation layer is present in the surface of refractory lining, rotary kiln transition belt skin temperature is reduced to 230 by 300~320 DEG C
~250 DEG C, reduce by 70 DEG C of rotary kiln skin temperature；The temperature of rotary kiln firing belt surface is reduced to 210 DEG C by 260 DEG C, reduces
50 DEG C of skin temperature, energy-saving effect is clearly.
The heat insulation felt protective layer is pasted on the refractory brick surface of rotary kiln, when clinkering zone in rotary kiln and intermediate zone temperature reach
After to normal high temperature (1400~1600 DEG C), starting to put into material, material wears the heat-barrier coating on refractory lining surface,
Reach after a certain period of time, the heat insulation felt protective layer on rotary kiln refractory lining surface gradually falls off, and completes making for protection refractory lining
Life then needs on exposed refractory lining surface when rotary kiln needs to stop kiln cold kiln starting again and has the surface of kliner coating to glue again
One layer of heat insulation felt protective layer of the invention is pasted, to achieve the purpose that protect refractory lining.
When rotary kiln stops kiln inspection comparison, the residual thickness of refractory brick is measured, discovery is using heat-barrier coating protection
Refractory brick face crack metamorphic layer is higher than the refractory brick intensity of not heat-barrier coating, and same period wear-thickness is 10~20 millimeters few,
It has been obviously prolonged the service life of refractory lining.
Embodiment 2:
Rotary kiln low temperature band refractory brick surface (1200~1250 DEG C of temperature herein), generally about 30 meters of length, with 25
The ceramic fiber blanket (1260 DEG C of maximum operation (service) temperature) that the high temperature colloidal silica sol of mm of thickness impregnated, with acidic high-temperature clay
It is pasted on the refractory brick surface of the low temperature band of rotary kiln, by spontaneously drying, tapetum fibrosum forms one layer of hard protective layer and is adhered to
The surface of refractory lining, the density of this layer of protective layer are 350Kg/m3, thermal coefficient is 0.12W/mK (600 DEG C).
When rotary kiln refractory lining before this does not have thermal insulation layer protection, every time after cold kiln heating, the surface of refractory brick can all go out
Existing 5~10 millimeters of micro-cracks, during overburnt material, this layer of crackle metamorphic layer will soon be worn away；When stopping, kiln measurement is resistance to
When firebrick thickness, have thermal insulation layer protect refractory wear thickness than no thermal insulation layer protect it is resistance to afterwards 5~10 millimeters of less wear,
Thus service life of the low temperature with refractory lining is extended.
Cylinder of rotary kiln skin temperature is reduced to 150 DEG C by 200 DEG C when thermal insulation layer is present in refractory lining surface, fall
It is 50 DEG C, energy-saving effect is obvious.
Embodiment 3:
5000 tons of cement rotary kiln of daily output, after puzzling refractory brick, 4360 millimeters of inside diameter, embodiment 1 and embodiment 2
Sticking construction be after needing rotary kiln middle and lower part half to paste, to need to rotate rotary kiln into 180 degree, then paste other half
Firebrick lining surface heat-barrier coating, speed of application is slow.
Using gunite, by fiber and high temperature bond glue mixing jetting to the surface of rotary kiln clinkering zone kliner coating, thickness 25
~30 millimeters, density is 400~500Kg/m after heat-barrier coating is dry3, such speed of application improves 2 times, saves construction
Time reduces by 50~70 DEG C of skin temperature, protects the cracking degree of refractory lining, extend the service life of refractory lining.
Embodiment 4
It is using semar technique, lightweight heat-proof powder alumina hollow ball resistant to high temperature and high temperature adhesives aluminium dihydrogen phosphate is molten
Liquid is mixed into muddy, is then manually applied to the position that local abnormal shape is difficult to construct, or use gunite large-area construction
Onto complicated surface, the effect same of equivalent fibrous thermal protective layer can achieve, compensate for the part of fibrous thermal protection
Abnormal shape is difficult to the characteristics of constructing.
Using lightweight powder, fiber and high temperature adhesives in application, the fiber inside lightweight powder can play enhancing
Effect protects the time of refractory lining can be more permanent, is suitably applied revolution so that the antiwear property of heat-barrier coating enhances
Intermediate zone and low temperature band the refractory lining surface of kiln.
Embodiment 5
In rotary kiln coal powder injection to the castable refractory surface of (being also burner), using mullite fiber felt and mullite glue
Body mother liquor impregnates, and is then pasted on High temperature Refractory Mortar in the length in one meter of coal injection pipe hot end, the thickness of mullite fiber felt
It is 25 millimeters, after 4 months, pulls out and observe surface outside rotary kiln, do not see apparent cracking and damage, then, continue
After coming into operation 4 months, stop pulling out observation, after protective layer only has a small amount of crackle, rotary kiln to overhaul, spray when kiln maintenance
Coal pipe continues to come into operation, and observation is pulled out after 4 months, and sealer locally has bigger contraction damage, relatively
Castable originally does not have protective layer situation, and the service life of coal injection pipe extends 4~6 times, coal injection pipe is greatly improved
Effective operational efficiency.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, under the premise of not departing from inventive concept, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (10)
1. the refractory lining and burner anti-thermal shock protective layer of a kind of rotary kiln, it is characterised in that: met inside the refractory lining of rotary kiln
The outer surface of the castable refractory of fiery face or rotary kiln burner is pasted or one layer of injection or smearing or more thermal insulation layer, the thermal insulation layer
It is mixed by long fibre and/or heat-insulated powder with high temperature resistant bonding agent.
2. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 1, it is characterised in that: the length
The single diameter of fiber is 3~12 microns, and joint length is 25~300 millimeters.
3. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 1 or 2, it is characterised in that: described
The manufacturing method of thermal insulation layer be: will be impregnated in high temperature resistant bonding agent containing long stapled blanket resistant to high temperature or felt or plate, shape
At wet felt or felt or plate, wherein the density containing long stapled blanket resistant to high temperature or felt or plate is 80~400Kg/m3, wet felt or
Felt or plate thickness control are 5~50 millimeters, and wet felt or felt or the dry rear density domination of plate are 250~600Kg/m3。
4. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 3, it is characterised in that: containing long fine
The blanket or felt or plate resistant to high temperature of dimension are to use high temperature resistant for 1000~1800 DEG C of ceramic fiber blanket/felt/plate, high silica fiber
Blanket/felt/plate, aluminium silicate fiber containing zirconia blanket/felt/plate, mullite crystal tapetum fibrosum/felt/plate, alpha-alumina crystals tapetum fibrosum/felt/plate
One or more.
5. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 4, it is characterised in that: described contains
There are long stapled blanket resistant to high temperature or felt or plate, using 1430 DEG C of high temperature resistant of fibers containing zirconium and 1600 DEG C of high temperature resistant of mullite
Crystal fibre is mixed according to weight ratio 1:1.
6. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 3, it is characterised in that: described is resistance to
High temperature adhesives are water glass solution, phosphate dihydrogen aluminum solution, silica solution, Aluminum sol, mullite colloid mother liquor, alumina gel
One or more kinds of mixtures of mother liquor, solid content 15~70%.
7. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 6, it is characterised in that: described is resistance to
High temperature adhesives are mixed using silica solution, the Aluminum sol that solid content is 30% according to weight ratio 5~40: 60~95.
8. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 1, it is characterised in that: described is viscous
Patch is pasted using High temperature Refractory Mortar.
9. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 1 or 2, it is characterised in that: described
The manufacturing method of thermal insulation layer be gunite, spray head will be transported to containing long stapled loose wool using the gas suspension of spraying machine
Place, then high temperature resistant bonding agent is transported at the nozzle around spray head with pump, high temperature resistant bonding agent is injected to containing length from nozzle
In the air-flow of fiber, the rhagiocrin fiber stream of mixing is formed, directly sprays and adhere to the refractory lining surface of rotary kiln, is solidified
One layer of heat-barrier coating, 250~600Kg/m of density are formed after drying3。
10. the refractory lining and burner anti-thermal shock protective layer of rotary kiln according to claim 1 or 2, it is characterised in that: described
The manufacturing method of thermal insulation layer be: heat-insulated powder, high temperature resistance and long fiber and high temperature resistant bonding agent are mixed into muddy, high temperature resistant
Long stapled weight is the 2~6% of heat-insulated powder weight, is applied to refractory lining surface and forms protective layer；Or gunite is used,
By heat-insulated powder, high temperature resistance and long fiber and high temperature resistant bonding agent mixing jetting to the surface of refractory lining, protective layer is formed, this is heat-insulated
300~800Kg/m of protective layer material density that powder is formed3, the heat-insulated powder is for alumina hollow ball resistant to high temperature or gently
One or more kinds of mixtures of matter mullite aggregate particle or light weight alumina particles of aggregates.
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| CN111592366A (en) * | 2020-04-28 | 2020-08-28 | 河南九环实业发展有限公司 | Environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material |
| CN112592168A (en) * | 2021-02-08 | 2021-04-02 | 淄博雨程节能环保科技有限公司 | Plastic ceramic fiber product |
| CN112723867A (en) * | 2021-02-08 | 2021-04-30 | 淄博雨程节能环保科技有限公司 | Plastic ceramic fiber product |
| CN114593608A (en) * | 2022-01-20 | 2022-06-07 | 华润水泥(鹤庆)有限公司 | Novel rotary kiln coal injection pipe construction method |
| CN115595517A (en) * | 2022-09-27 | 2023-01-13 | 安徽瑞泰新材料科技有限公司（Cn） | An integrated refractory material outside the cement kiln |
| CN116239392A (en) * | 2023-03-24 | 2023-06-09 | 长兴兴鹰新型耐火建材有限公司 | Castable for rotary kiln grate cooler |
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| CN116239392B (en) * | 2023-03-24 | 2024-01-09 | 长兴兴鹰新型耐火建材有限公司 | Castable for rotary kiln grate cooler |
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