CN113932609B - Silicon carbide furnace bottom structure - Google Patents
Silicon carbide furnace bottom structure Download PDFInfo
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- CN113932609B CN113932609B CN202111196670.1A CN202111196670A CN113932609B CN 113932609 B CN113932609 B CN 113932609B CN 202111196670 A CN202111196670 A CN 202111196670A CN 113932609 B CN113932609 B CN 113932609B
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 32
- 239000011449 brick Substances 0.000 claims abstract description 62
- 239000010410 layer Substances 0.000 claims description 136
- 239000004744 fabric Substances 0.000 claims description 47
- 239000004575 stone Substances 0.000 claims description 32
- 230000007246 mechanism Effects 0.000 claims description 27
- 239000011148 porous material Substances 0.000 claims description 20
- 239000003517 fume Substances 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 239000003546 flue gas Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 13
- 239000004088 foaming agent Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 6
- 230000008093 supporting effect Effects 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000003365 glass fiber Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- XBWAZCLHZCFCGK-UHFFFAOYSA-N 7-chloro-1-methyl-5-phenyl-3,4-dihydro-2h-1,4-benzodiazepin-1-ium;chloride Chemical compound [Cl-].C12=CC(Cl)=CC=C2[NH+](C)CCN=C1C1=CC=CC=C1 XBWAZCLHZCFCGK-UHFFFAOYSA-N 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004763 nomex Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021418 black silicon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011335 coal coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- F27D1/0043—Floors, hearths
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
- C01B32/97—Preparation from SiO or SiO2
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a silicon carbide furnace bottom structure, which comprises a furnace wall, wherein a furnace mouth is formed in the outer side of the furnace wall, a smoke collecting hood is fixedly arranged at the top of the furnace wall, a furnace seat is fixedly arranged at the bottom of the furnace wall, a base is arranged at the bottom of the furnace seat, an upper refractory brick layer is arranged in the furnace seat, an insulating layer positioned at the bottom of the upper refractory brick layer is arranged in the furnace seat, a lower refractory brick layer positioned at the bottom of the insulating layer is arranged in the furnace seat, a supporting ring is arranged in the outer side of the furnace wall, and the supporting ring is positioned below the smoke collecting hood. The silicon carbide furnace bottom structure has the advantages of good insulativity, water resistance and moisture resistance, solves the problems that the bottom of a furnace has poor air permeability, a crystallization layer is often thin, the quality is poor, the phenomenon of electric leakage is easy to occur, and when the moisture of the ground moisture-regaining furnace bottom is increased, the phenomenon of electric leakage is more serious, potential safety hazards are caused, and meanwhile, the energy consumption is increased.
Description
Technical Field
The invention relates to the technical field of silicon carbide production equipment, in particular to a silicon carbide furnace bottom structure.
Background
Silicon carbide is an inorganic substance, the chemical formula is SiC, which is prepared by smelting raw materials such as quartz sand, petroleum coke (or coal coke), wood dust (salt is needed to be added when green silicon carbide is produced) and the like at high temperature through a resistance furnace, rare minerals exist in the silicon carbide in nature, morsanite exists in the non-oxide high-technology refractory raw materials such as C, N, B, the silicon carbide is the most widely applied and economical one, and can be called as diamond sand or refractory sand, the silicon carbide produced in China industry is divided into black silicon carbide and green silicon carbide, the current silicon carbide production ore smelting furnace is indispensable equipment, the ore smelting furnace is also called an electric arc furnace or a resistance furnace, and is mainly used for reducing and smelting ores, raw materials such as carbonaceous reducing agent, solvents and the like, and is mainly used for producing iron alloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, ferromanganese alloy and the like. Typically, the constant volume output of the first few stages and the constant current output of the last few stages.
Along with the continuous enlargement of the SiC production furnace, the hearth type is diversified, but the hearth is mainly a flat hearth on a resistance furnace with 5000-7000 kW, and the hearth has the main defects of poor bottom air permeability, thin crystallization layer, poor quality and easy electric leakage phenomenon, and when the moisture of the ground moisture-regaining furnace bottom is increased, the electric leakage phenomenon is more serious, potential safety hazard is caused, and energy consumption is increased, so that the silicon carbide furnace bottom structure is provided to solve the problems.
Disclosure of Invention
The present invention is directed to a silicon carbide furnace bottom construction that solves the problems set forth in the background art described above.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a silicon carbide furnace bottom structure, includes the oven, the fire door has been seted up in the outside of oven, the top fixed mounting of oven has the collection petticoat pipe, the bottom fixed mounting of oven has the stove seat, the base is installed to the bottom of stove seat, the inside of stove seat has been arranged on the firebrick layer, the inside of stove seat has been arranged and has been located the insulating layer on firebrick layer bottom, the inside of stove seat has been arranged and has been located the lower firebrick layer of insulating layer bottom.
As still further aspects of the invention: the outer side of the furnace wall is provided with a supporting ring, the supporting ring is positioned below the fume collecting hood, the bottom of the supporting ring is fixedly provided with a bracket fixedly connected with the base, the brackets are distributed at equal intervals, and the positions of the brackets and the positions of the furnace mouth are alternately distributed.
As still further aspects of the invention: the inside of stove seat is arranged and is located the high temperature resistant fire prevention cloth in insulating layer and lower firebrick layer outside, and the top of high temperature resistant fire prevention cloth is located the middle part position of insulating layer, the top on firebrick layer is not provided with the insulating layer, the outside parcel on firebrick layer is gone up to the insulating layer, goes up the firebrick layer although being located the inside of stove seat, does not contact between firebrick layer and the stove seat in fact.
As still further aspects of the invention: the inside on last firebrick layer and lower firebrick layer all is provided with the hole that the equidistance distributes, and the hole is transversely, and the firebrick is crisscross each other when the overall arrangement, and the hole is not intercommunicated each other.
As still further aspects of the invention: the insulating layer comprises 1 part of cement, 2 parts of sand, 4 parts of stone, 1 part of cement, 3 parts of stone powder and 6 parts of stone which are mixed and solidified, and a ceramic interlayer is arranged in the insulating layer.
As still further aspects of the invention: the insulating layer comprises 0.05 part of foaming agent, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash, which are mixed and solidified, and a ceramic interlayer is arranged in the insulating layer.
As still further aspects of the invention: the inside of stove seat has been arranged and is located dampproofing mechanism of lower firebrick layer bottom, the top intercommunication of collection petticoat pipe has the flue gas pipe that is linked together with dampproofing mechanism, the inside fixed mounting of flue gas pipe has axial fan.
As still further aspects of the invention: the dampproofing mechanism includes casing, backup pad, gas-distributing ring and communicating pipe, the inside of casing is hollow form, and the inside central point of casing puts and is provided with the gas-distributing ring, the inside of casing is provided with the backup pad that is located the gas-distributing ring outside and equidistance annular distribution, both ends all communicate about the casing have communicating pipe, are located communicating pipe and the flue gas pipe on the right side and are linked together, be provided with the split level between dampproofing mechanism and the high temperature resistant fire prevention cloth, the split level is piled up by resistant firebrick and forms.
As still further aspects of the invention: the support plate at the front side and the support plate at the rear side are fixedly connected with the shell, and a gap is arranged between the support plate and the gas distributing ring.
Compared with the prior art, the invention has the beneficial effects that:
1. the silicon carbide furnace bottom structure is characterized in that 1 part of cement, 2 parts of sand, 4 parts of stone, 1 part of cement, 3 parts of stone powder and 6 parts of stone are used for preparing an insulating layer, the insulating layer has good insulating property, expansion joints can adapt to thermal expansion and contraction, and meanwhile, the insulating layer is dampproof, waterproof and fireproof, the insulating property of a furnace body is improved, and the insulating layer is suitable for a humid environment.
2. The silicon carbide furnace bottom structure is characterized in that 0.05 part of foaming agent, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash are used for preparing an insulating layer, so that the silicon carbide furnace bottom structure has good insulating property, light weight, high water molecule discharge speed and suitability for a small-sized submerged arc furnace, and internal air holes are expanded with heat and contracted with cold.
3. This carborundum stove bottom structure circulates in dampproofing mechanism's inside through the flue gas, and the flue gas heat carries out the hydrone to the bottom carrier and dries, prevents that ground from getting damp, leads to insulating layer and resistant firebrick to receive the moisture to influence, and insulating properties decline.
Drawings
FIG. 1 is a schematic structural view of a silicon carbide furnace bottom construction;
FIG. 2 is a schematic view of the structure of a furnace seat in a silicon carbide furnace bottom construction;
FIG. 3 is an exploded view of the structure of the hearth in a silicon carbide hearth configuration;
FIG. 4 is a cross-sectional view of the structure of a hearth in a silicon carbide hearth configuration;
FIG. 5 is a cross-sectional view of the moisture barrier mechanism in a silicon carbide furnace bottom configuration.
In the figure: 1. a furnace wall; 2. a bracket; 3. a backing ring; 4. a fume collecting hood; 5. a flue pipe; 6. an axial flow fan; 7. a furnace mouth; 8. a furnace seat; 9. a moisture-proof mechanism; 901. a housing; 902. a communicating pipe; 903. a support plate; 904. a gas distributing ring; 10. a base; 11. high-temperature-resistant fireproof cloth; 12. a refractory brick layer is arranged on the upper surface of the brick layer; 13. a lower refractory brick layer; 14. an insulating layer.
Detailed Description
Referring to fig. 1 to 5, in the embodiment of the present invention, a silicon carbide furnace bottom structure includes a furnace wall 1, a furnace mouth 7 is provided on the outer side of the furnace wall 1, a fume collecting hood 4 is fixedly installed on the top of the furnace wall 1, a furnace seat 8 is fixedly installed on the bottom of the furnace wall 1, a base 10 is installed on the bottom of the furnace seat 8, an upper refractory brick layer 12 is disposed in the furnace seat 8, an insulating layer 14 disposed at the bottom of the upper refractory brick layer 12 is disposed in the furnace seat 8, a lower refractory brick layer 13 disposed at the bottom of the insulating layer 14 is disposed in the furnace seat 8, the insulating layer 14 is sandwiched between the upper refractory brick layer 12 and the lower refractory brick layer 13, the refractory bricks are called as fire bricks, and the refractory materials made of refractory clay or other refractory raw materials are light yellow or brown, can resist high temperatures of 1580 ℃ to 1770 ℃, and play a role in protecting the insulating layer 14 from being sintered, and performance is reduced.
In a preferred embodiment, the outside of oven 1 is provided with the die-pin 3, and die-pin 3 is located the below of collection petticoat pipe 4, die-pin 3's bottom fixed mounting has the support 2 with base 10 fixed connection, and support 2 is equidistant distribution, and the position of support 2 and the position of fire door 7 are mutual alternate distribution, and support 2 plays certain supporting role to oven 1, can effectually slow down the bearing of insulating layer 14, prevents that insulating layer 14 from bearing weight overload, leads to insulating layer 14 deformation and internal structure damage, plays the guard action to insulating layer 14.
In a preferred embodiment, the inside of the furnace seat 8 is provided with a high temperature resistant fireproof cloth 11 located at the outer sides of the insulating layer 14 and the lower fireproof brick layer 13, the top of the high temperature resistant fireproof cloth 11 is located at the middle position of the insulating layer 14, the top of the upper fireproof brick layer 12 is not provided with the insulating layer 14, the insulating layer 14 wraps the outer side of the upper fireproof brick layer 12, the upper fireproof brick layer 12 is located inside the furnace seat 8, but actually the fireproof brick layer 12 is not contacted with the furnace seat 8, the high temperature resistant fireproof cloth 11 is matched with waterproof cloth for use, the fireproof cloth is used as a special industry, a special industrial protective fabric is mainly classified into a silicon rubber coated glass fiber cloth, a basalt fiber fireproof cloth, a acrylic fiber fireproof cloth, a Nomex fireproof cloth, an SM fireproof cloth, a blue glass fiber fireproof cloth, an aluminum foil fireproof cloth and the like, the silicon titanium fireproof cloth is a high temperature resistant inorganic fiber, the silicon dioxide (SiO 2) content of which is higher than 96%, the softening point is close to 1700 ℃ and can be used for a long time at 900 ℃, the fireproof cloth can be operated for 10 minutes at 1450 ℃ and the working condition of 1600 ℃ and the glass fiber is still used as a sound-proof glass fiber, the safety paste is still used as a main material, and the fireproof material is well-done by using the glass fiber, and the fireproof cloth is improved in the glass fiber is a fire-proof process condition: the heat insulation, fire prevention and flame retardance play a certain role in preventing water and moisture.
In a preferred embodiment, the inside of the upper refractory brick layer 12 and the lower refractory brick layer 13 are provided with equidistant distributed pores, the pores are transverse, the refractory bricks are staggered when in layout, the pores are not communicated with each other, the pores can effectively adapt to the expansion and contraction of heat of the upper refractory brick layer 12 and the lower refractory brick layer 13, the cracks of the heated brick body are prevented, the pores are transverse, heat is prevented from spreading through the pores, other structures are damaged at high temperature, the refractory bricks are staggered when in layout, the pores are not communicated with each other, and the diffusion of smoke, heat and water vapor from the pores can be effectively prevented.
In a preferred embodiment, the insulating layer 14 includes 1 part of cement, 2 parts of sand, 4 parts of stone+1 part of cement, 3 parts of stone powder and 6 parts of stone, during construction, expansion joints are arranged by using templates, the width of the expansion joints is smaller than one centimeter and are distributed in a crisscross manner, 1 part of cement, 2 parts of sand, 4 parts of stone+1 part of cement, 3 parts of stone powder and 6 parts of stone are filtered, water is added to mix and injected into the templates, after the injection height is 30 centimeters, a ceramic interlayer is arranged at the top of the concrete for 10 centimeters, concrete with the thickness of 30 centimeters is paved at the top of the ceramic interlayer again, and the insulating layer 14 is formed after waiting for forming, wherein the expansion joints adapt to thermal expansion and contraction.
In a preferred embodiment, the interior of the furnace seat 8 is provided with a moisture-proof mechanism 9 positioned at the bottom of the lower refractory brick layer 13, the top of the fume collecting hood 4 is communicated with a fume pipe 5 communicated with the moisture-proof mechanism 9, an axial flow fan 6 is fixedly arranged in the fume pipe 5, the axial flow fan 6 is used for fume transmission, and the fume collecting hood 4 is positioned at a high position, the moisture-proof mechanism 9 is positioned at a low position, fume is required to be transmitted from top to bottom, and thus a power device is required to transmit the fume.
In a preferred embodiment, the moisture-proof mechanism 9 comprises a casing 901, a supporting plate 903, a gas distributing ring 904 and a communicating pipe 902, the casing 901 is hollow, the gas distributing ring 904 is arranged at the central position of the casing 901, the supporting plate 903 which is arranged at the outer side of the gas distributing ring 904 and distributed in an annular mode at equal distance is arranged in the casing 901, the communicating pipes 902 are communicated with the left end and the right end of the casing 901, the communicating pipe 902 on the right side is communicated with the flue gas pipe 5, a division layer is arranged between the moisture-proof mechanism 9 and the high-temperature-resistant fireproof cloth 11 and is formed by stacking refractory bricks, the division layer separates the moisture-proof mechanism 9 from the high-temperature-resistant fireproof cloth 11, a certain high temperature is generated when flue gas passes through the moisture-proof mechanism 9, and the division layer can effectively prevent the high-temperature-resistant fireproof cloth 11 from being affected by the high temperature.
In a preferred embodiment, the support plate 903 on the front side and the support plate 903 on the rear side are fixedly connected with the casing 901, a gap is arranged between the support plate 903 and the air distributing ring 904, and flue gas is distributed to various positions inside the casing 901 through the gap, so that ground moisture regain is reduced by using high temperature.
The working principle of the invention is as follows: the insulating layer 14 comprises 1 part of cement, 2 parts of sand, 4 parts of stone and 1 part of cement, 3 parts of stone powder and 6 parts of stone, the material is high in resistance, under the condition of dry weather, fewer water molecules inside the insulating layer 14 can play an absolute role in insulation, the insulating layer 14 is wrapped by the high-temperature-resistant fireproof cloth 11 and the waterproof cloth, water penetrating into the ground below the ground can be prevented from penetrating into the insulating layer 14, the upper refractory brick layer 12 and the lower refractory brick layer 13, the insulating effect is influenced, the support 2 supports the furnace wall 1, when the insulating layer 14, the upper refractory brick layer 12, the lower refractory brick layer 13, the high-temperature-resistant fireproof cloth 11 and the waterproof cloth are damaged and aged, the repairing is facilitated, the furnace wall 1 is prevented from collapsing in the repairing process, when the moisture below the ground appears in a natural phenomenon like, the flue gas is transmitted to the inside of the shell 901 through the flue gas pipe 5 and the fan 6, the flue gas has a certain high temperature, the high temperature is transmitted outwards through the shell 901, the bottom ground environment can be effectively dried, the moisture is prevented from entering the insulating layer 14, the upper refractory brick layer 12 and the lower refractory brick layer 13, the insulating layer 13 is prevented from being lowered, and the performance of the insulating layer 13 is improved.
Referring to fig. 1 to 5, in the embodiment of the present invention, a silicon carbide furnace bottom structure includes a furnace wall 1, a furnace mouth 7 is provided on the outer side of the furnace wall 1, a fume collecting hood 4 is fixedly installed on the top of the furnace wall 1, a furnace seat 8 is fixedly installed on the bottom of the furnace wall 1, a base 10 is installed on the bottom of the furnace seat 8, an upper refractory brick layer 12 is disposed inside the furnace seat 8, an insulating layer 14 disposed at the bottom of the upper refractory brick layer 12 is disposed inside the furnace seat 8, a lower refractory brick layer 13 disposed at the bottom of the insulating layer 14 is disposed inside the furnace seat 8, refractory bricks are called refractory bricks for short, and refractory materials made of refractory clay or other refractory raw materials are light yellow or brown, and can resist high temperatures of 1580 ℃ to 1770 ℃, and also called as the refractory bricks, can play a role of protecting the insulating layer 14, prevent the insulating layer 14 from being sintered, and performance from being reduced.
In a preferred embodiment, the outside of oven 1 is provided with the die-pin 3, and die-pin 3 is located the below of collection petticoat pipe 4, die-pin 3's bottom fixed mounting has the support 2 with base 10 fixed connection, and support 2 is equidistant distribution, and the position of support 2 and the position of fire door 7 are mutual alternate distribution, and support 2 plays certain supporting role to oven 1, can effectually slow down the bearing of insulating layer 14, prevents that insulating layer 14 from bearing weight overload, leads to insulating layer 14 deformation and internal structure damage, plays the guard action to insulating layer 14.
In a preferred embodiment, the inside of the furnace seat 8 is provided with a high temperature resistant fireproof cloth 11 located at the outer sides of the insulating layer 14 and the lower fireproof brick layer 13, the top of the high temperature resistant fireproof cloth 11 is located at the middle position of the insulating layer 14, the top of the upper fireproof brick layer 12 is not provided with the insulating layer 14, the insulating layer 14 wraps the outer side of the upper fireproof brick layer 12, the upper fireproof brick layer 12 is located inside the furnace seat 8, but actually the fireproof brick layer 12 is not contacted with the furnace seat 8, the high temperature resistant fireproof cloth 11 is matched with waterproof cloth for use, the fireproof cloth is used as a special industry, the special industrial protective fabric is mainly classified into a silicon rubber coated glass fiber cloth, a basalt fiber fireproof cloth, an acrylic cotton fiber fireproof cloth, a Nomex fireproof cloth, an SM fireproof cloth, a blue glass fiber fireproof cloth, an aluminum foil fireproof cloth and the like, and the silicon titanium fireproof cloth is a high temperature resistant inorganic fiber, the silicon dioxide (SiO 2) content of which is higher than 96%, the softening point is close to 1700 ℃, the waterproof cloth can be used for a long term at 900 ℃, the temperature of 1450 ℃ and the waterproof cloth can be kept in a 1600 seconds, the working condition is still good, the glass fiber is used as a glass fiber-reinforced, the glass fiber paste is used for the main technological condition, and the fire-proof performance is better, and the glass fiber is better in a fire-proof condition is better at 1600 seconds: the heat insulation, fire prevention and flame retardance play a certain role in preventing water and moisture.
In a preferred embodiment, the inside of the upper refractory brick layer 12 and the lower refractory brick layer 13 are provided with equidistant distributed pores, the pores are transverse, the refractory bricks are staggered when in layout, the pores are not communicated with each other, the pores can effectively adapt to the expansion and contraction of heat of the upper refractory brick layer 12 and the lower refractory brick layer 13, the cracks of the heated brick body are prevented, the pores are transverse, heat is prevented from spreading through the pores, other structures are damaged at high temperature, the refractory bricks are staggered when in layout, the pores are not communicated with each other, and the diffusion of smoke, heat and water vapor from the pores can be effectively prevented.
In a preferred embodiment, the insulating layer 14 includes 0.05 part of foaming agent, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash, when in construction, expansion joints are arranged by using templates, the width of the expansion joints is smaller than one centimeter, the expansion joints are distributed in a criss-cross manner, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash and 0.05 part of foaming agent are sequentially fed into a concrete stirring device to be stirred until the materials are uniform, sampling is carried out, after the materials are qualified, the materials are paved with 30 cm thickness, the top is provided with a ceramic interlayer 10 cm, concrete with 30 cm thickness is paved again, and the materials are waited for forming, thus forming the insulating layer 14.
In a preferred embodiment, the interior of the furnace seat 8 is provided with a moisture-proof mechanism 9 positioned at the bottom of the lower refractory brick layer 13, the top of the fume collecting hood 4 is communicated with a fume pipe 5 communicated with the moisture-proof mechanism 9, an axial flow fan 6 is fixedly arranged in the fume pipe 5, the axial flow fan 6 is used for fume transmission, and the fume collecting hood 4 is positioned at a high position, the moisture-proof mechanism 9 is positioned at a low position, fume is required to be transmitted from top to bottom, and thus a power device is required to transmit the fume.
In a preferred embodiment, the moisture-proof mechanism 9 comprises a casing 901, a supporting plate 903, a gas distributing ring 904 and a communicating pipe 902, the casing 901 is hollow, the gas distributing ring 904 is arranged at the central position of the casing 901, the supporting plate 903 which is arranged at the outer side of the gas distributing ring 904 and distributed in an annular mode at equal distance is arranged in the casing 901, the communicating pipes 902 are communicated with the left end and the right end of the casing 901, the communicating pipe 902 on the right side is communicated with the flue gas pipe 5, a division layer is arranged between the moisture-proof mechanism 9 and the high-temperature-resistant fireproof cloth 11 and is formed by stacking refractory bricks, the division layer separates the moisture-proof mechanism 9 from the high-temperature-resistant fireproof cloth 11, a certain high temperature is generated when flue gas passes through the moisture-proof mechanism 9, and the division layer can effectively prevent the high-temperature-resistant fireproof cloth 11 from being affected by the high temperature.
In a preferred embodiment, the support plate 903 on the front side and the support plate 903 on the rear side are fixedly connected with the casing 901, a gap is arranged between the support plate 903 and the air distributing ring 904, and flue gas is distributed to various positions inside the casing 901 through the gap, so that ground moisture regain is reduced by using high temperature.
The working principle of the invention is as follows: the insulating layer 14 comprises 0.05 part of foaming agent, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash, wherein the foaming agent is a substance for forming holes of an object substance, the physical foaming agent is a compound formed by changing the physical form of a certain substance, namely expansion of compressed gas, volatilization of liquid or dissolution of solid, so that weight is reduced, a foamed concrete layer is generated, the insulating layer has good heat insulation performance and waterproof and fireproof performances, the stone can improve the overall strength and bearing capacity after the concrete is solidified, the stone powder strengthens the viscosity of refractory bricks, the inside of the reduced insulating layer 14 is provided with pores, the thermal expansion and contraction can be well adapted, the collapse can be prevented under the supporting action of the bracket 2, the load of the dampproof mechanism 9 is reduced, and the insulating layer is suitable for the operation of the dampproof mechanism 9.
It should be noted that, the foregoing embodiments all belong to the same inventive concept, and the descriptions of the embodiments have emphasis, and where the descriptions of the individual embodiments are not exhaustive, reference may be made to the descriptions of the other embodiments.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (3)
1. The utility model provides a silicon carbide furnace bottom structure, includes oven (1), furnace mouth (7) have been seted up in the outside of oven (1), collection petticoat pipe (4) have been installed to the top of oven (1), a serial communication port, the bottom fixed mounting of oven (1) has stove seat (8), base (10) are installed to the bottom of stove seat (8), upper firebrick layer (12) have been arranged to the inside of stove seat (8), insulating layer (14) that are located the bottom of upper firebrick layer (12) have been arranged to the inside of stove seat (8), lower firebrick layer (13) that are located the bottom of insulating layer (14) have been arranged to the inside of stove seat (8), the outside of oven (1) is provided with carrier ring (3), and carrier ring (3) are located the below of collection petticoat pipe (4), the bottom fixed mounting of carrier ring (3) have with base (10) fixedly connected support (2), support (2) are the equidistance and distribute, the position of support (2) and the position of stove mouth (7) are distributed alternately each other, the inside of stove seat (8) has insulating layer (14) that are located the bottom of insulating layer (14) and insulating layer (11) are located the top of fire-proof layer (11), the top of the upper refractory brick layer (12) is not provided with an insulating layer (14), the insulating layer (14) wraps the outer side of the upper refractory brick layer (12), the upper refractory brick layer (12) is positioned in the furnace seat (8) but is not contacted with the furnace seat (8) in practice, the interiors of the upper refractory brick layer (12) and the lower refractory brick layer (13) are respectively provided with equidistantly distributed pores, the pores are transverse, the refractory bricks are staggered when in layout, the pores are not communicated with each other, a moisture-proof mechanism (9) positioned at the bottom of the lower refractory brick layer (13) is arranged in the furnace seat (8), a flue gas pipe (5) communicated with the moisture-proof mechanism (9) is communicated with the top of the fume collecting hood (4), and an axial flow fan (6) is fixedly arranged in the flue gas pipe (5);
the moistureproof mechanism (9) comprises a shell (901), a support plate (903), an air distributing ring (904) and communicating pipes (902), wherein the interior of the shell (901) is hollow, the air distributing ring (904) is arranged at the central position of the interior of the shell (901), the support plate (903) which is positioned at the outer side of the air distributing ring (904) and distributed annularly at equal distance is arranged in the interior of the shell (901), the communicating pipes (902) are communicated at the left end and the right end of the shell (901), and the communicating pipes (902) positioned at the right side are communicated with the flue gas pipe (5);
a division layer is arranged between the moistureproof mechanism (9) and the high-temperature-resistant fireproof cloth (11), the division layer is formed by piling refractory bricks, the support plates (903) at the front side and the support plates (903) at the rear side are fixedly connected with the shell (901), and a gap is arranged between the support plates (903) and the air distributing ring (904).
2. The silicon carbide furnace bottom structure according to claim 1, wherein the insulating layer (14) is formed by mixing 1 part of cement, 2 parts of sand, 4 parts of stone + 1 part of cement, 3 parts of stone powder and 6 parts of stone and solidifying, and a ceramic interlayer is provided inside the insulating layer (14).
3. The silicon carbide furnace bottom structure according to claim 1, wherein the insulating layer (14) comprises 0.05 part of foaming agent, 2 parts of cement, 6 parts of stone powder, 4 parts of stone and 1 part of fly ash, which are mixed and solidified, and a ceramic interlayer is arranged inside the insulating layer (14).
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| CN2490532Y (en) * | 2001-05-22 | 2002-05-08 | 宁永章 | Bottom carbon lining build furnace of ore-smelting furnace |
| EP2032673A1 (en) * | 2006-06-06 | 2009-03-11 | Uhde GmbH | Floor construction for horizontal coke ovens |
| CN101398259A (en) * | 2007-09-29 | 2009-04-01 | 沈阳铝镁设计研究院 | Bottom flue gas passage structure of electrode calcination furnace with cap |
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