CN114523545A - Kiln opening protection unit, production method and installation method thereof - Google Patents
Kiln opening protection unit, production method and installation method thereof Download PDFInfo
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- CN114523545A CN114523545A CN202210086851.7A CN202210086851A CN114523545A CN 114523545 A CN114523545 A CN 114523545A CN 202210086851 A CN202210086851 A CN 202210086851A CN 114523545 A CN114523545 A CN 114523545A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 231
- 239000000463 material Substances 0.000 claims description 68
- 238000005266 casting Methods 0.000 claims description 39
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 23
- 230000002787 reinforcement Effects 0.000 description 24
- 239000010410 layer Substances 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Abstract
The invention discloses a kiln mouth protection unit, a production method and an installation method thereof, belonging to the technical field of rotary kiln protection; according to the invention, the protective unit is prefabricated outside the installation site through the production method of the kiln opening protective unit, and then the protective unit is installed on the site of the rotary kiln, so that the installation is convenient, the kiln opening protective unit can be sintered outside the site of the rotary kiln, and the structural performance of the kiln opening protective unit can be enhanced.
Description
Technical Field
The invention relates to the technical field of rotary kiln protection, in particular to a kiln opening protection unit, a production method and an installation method thereof.
Background
The rotary kiln for cement factories is key equipment for producing cement burning systems, the kiln head part is a key core component, and the kiln head area is a high-temperature, high-scouring and high-corrosion area, so that the protection of the kiln head area is vital, the kiln head area is fully protected, a kiln mouth cylinder body can be protected and prolonged from burning loss, corrosion and deformation, and the service life of the kiln mouth can be protected and prolonged, and the stable operation of the rotary kiln is related to the fact that the rotary kiln can be stably operated.
In the prior art, a kiln opening is protected by adopting a kiln opening protection plate, the kiln opening protection plate is arranged by adopting a structure of a heat-resistant steel protection plate and a castable, so that the kiln opening is protected, generally, the heat-resistant steel protection plate is arranged at the position of the kiln opening, then the castable is coated on the outer surface of the heat-resistant steel protection plate, the end surface of the protection plate is directly acted by high temperature, and the strength of a kiln opening protection plate material is obviously reduced and is extremely easy to oxidize because the temperature of the kiln opening is high (about 1200 ℃); after the kiln mouth guard plate is burnt, the surface becomes rough, a plurality of micro cracks are generated, and blocks fall off, are peeled off and are broken when the surface is serious; the kiln mouth guard plate is divided into a plurality of fan-shaped uniform distribution blocks along the kiln mouth, if the kiln mouth guard plate cannot be ensured to be installed in a circumferential gap, because the temperature is high, the thermal expansion amount is large, the high-temperature thermal expansion can cause the guard plates to be extruded mutually, deform until the guard plates are broken and lose efficacy, in order to prolong the overhaul period of the rotary kiln, a pouring material can be poured at the kiln mouth guard plate of the rotary kiln, if the pouring material is abnormally dropped, the service life of the kiln mouth guard plate can be directly influenced, the service life of a kiln mouth barrel is further influenced to be prolonged, usually only 10-12 months exist, and therefore the kiln mouth guard plate which is high in temperature resistance and long in service life is needed.
In order to improve the protection effect of the kiln opening, the prior art adopts a technical route for improving the strength of the heat-resistant steel guard plate, for example, reinforcing ribs are arranged at specific positions on the heat-resistant steel guard plate; in the prior art, a technical idea of improving the bonding performance between the heat-resistant steel guard plate and the castable is also adopted, for example, a cramp is arranged on the heat-resistant steel guard plate, and the bonding performance between the heat-resistant steel guard plate and the castable is improved through the arrangement of the cramp. Although the scheme can improve the overall strength of the kiln mouth guard plate to a certain extent, the structure of the refractory steel guard plate and the castable in the prior art already determines that the combination of the castable and the refractory steel guard plate is a combination mode easy to separate, so that the technical problem that the kiln mouth guard plate is easy to fall off under the working condition cannot be fundamentally solved.
In addition, as in the chinese utility model with the publication number CN202770179U, the kiln mouth guard plate structure includes a guard plate body having a heating surface, the upper and lower parts of the heating surface are respectively provided with an angular reinforcing rib, and other parts of the heating surface are also provided with a solid material reinforcing rib. Although the setting of strengthening rib can reduce the emergence of backplate deformation condition to a certain extent in this scheme to can improve the bonding property between heat-resisting steel backplate and the castable, nevertheless be difficult to avoid the technical problem that can drop between heat-resisting steel backplate and the castable, its life still has great restriction.
Disclosure of Invention
The invention aims to provide a kiln mouth protection unit, a production method and an installation method thereof, aiming at the technical problem of poor protection effect after the kiln mouth guard plate is prepared and installed in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
according to the production method of the kiln mouth protection unit, the reinforcing mechanism is placed in the mold, and the castable is added into the mold, so that the reinforcing mechanism is positioned inside the castable; and then solidifying the casting material, and sintering the kiln mouth protection unit after the casting material is solidified to obtain a finished kiln mouth protection unit product. By the mode, the kiln mouth protection unit can be sintered outside the rotary kiln field, and the structural performance of the kiln mouth protection unit can be strengthened.
Preferably, the reinforcing means comprises a cylinder wall reinforcing element and a port reinforcing element, and the reinforcing means is produced by connecting the planes of the cylinder wall reinforcing element and the port reinforcing element to each other perpendicularly to each other.
Preferably, the material used for the reinforcing mechanism is a stainless steel plate; by combining the preparation method, as the part formed by the casting material has better structural performance after sintering, the reinforcing mechanism can play an internal reinforcing role, and the stainless steel material with better toughness can be used, so that not only the structural performance is further improved, but also the stainless steel material is corrosion-resistant, and the service life of the stainless steel material can be further improved.
Preferably, the material used for the reinforcing mechanism is 316L stainless steel plate.
Preferably, when the reinforcing mechanism is produced, the cylinder wall reinforcing part and the port reinforcing part are respectively provided with a cylinder wall reinforcing through hole and a port reinforcing through hole, so that the casting materials on two sides of the positions of the cylinder wall reinforcing part and the port reinforcing part can be connected through the cylinder wall reinforcing through hole and the port reinforcing through hole in a penetrating manner.
Preferably, when the reinforcing mechanism is produced, the cylinder wall reinforcing member and the port reinforcing member are respectively provided with a cylinder wall reinforcing fixing member and a port reinforcing fixing member, and the cylinder wall reinforcing fixing member and the port reinforcing fixing member respectively protrude from the plane where the cylinder wall reinforcing member and the port reinforcing member are located.
Preferably, in the pouring process, one end of the cylinder wall reinforcing and fixing piece and/or the end opening reinforcing and fixing piece, which is far away from the reinforcing mechanism, is in contact with the mold, so that the reinforcing mechanism is suspended in the mold, and pouring materials are arranged on two sides of the reinforcing mechanism.
Preferably, before casting, bolts for fixing the kiln mouth protection unit are fixed on the reinforcing mechanism, and the reinforcing mechanism fixed with the bolts is placed in the mold for casting.
The kiln mouth protection unit is produced by the production method.
According to the installation method of the kiln mouth protection unit, the kiln mouth protection unit is prepared by the production method of the kiln mouth protection unit, then a plurality of kiln mouth protection units are transported to a rotary kiln installation site, and then the kiln mouth protection units are installed at a kiln mouth; the installation method is not only convenient in installation process, but also the kiln mouth protection unit has better quality.
The invention relates to a kiln mouth protection reinforcing mechanism, which comprises a cylinder wall reinforcing piece and a port reinforcing piece; the cylinder wall reinforcing part is connected with one side of the port reinforcing part, and the plane of the cylinder wall reinforcing part is vertical to the plane of the port reinforcing part; the cylinder wall reinforcing piece can be arranged in the castable of the inner cylinder wall of the kiln mouth cylinder wall, and the port reinforcing piece can be arranged in the castable of the port at the kiln mouth port. The kiln mouth protection reinforcing mechanism is integrally provided with higher strength through the connection of the cylinder wall reinforcing piece and the port reinforcing piece, and can be respectively used in the castable of the inner cylinder wall of the kiln mouth cylinder wall and the castable of the port at the kiln mouth, so that the local part of the castable has better strength, and the kiln mouth protection reinforcing mechanism and the castable form a whole, thereby being favorable for reducing the occurrence of structural damage caused by high-temperature thermal expansion due to higher working condition temperature in the using process.
Preferably, the cylinder wall reinforcing part is a cylinder wall reinforcing plate, and a cylinder wall reinforcing through hole is formed in the cylinder wall reinforcing plate; and/or the port reinforcement is a port reinforcement plate, and a port reinforcement through hole is formed in the port reinforcement plate; the arrangement of the cylinder wall reinforcing through hole and the port reinforcing through hole enables the castable to permeate into the cylinder wall reinforcing through hole, so that the combination of the castable and the kiln mouth protection reinforcing mechanism is facilitated, the connection between the castable at different positions is facilitated, and the local strength of the castable and the connection integrity of the kiln mouth protection reinforcing mechanism and the castable are further improved.
Preferably, the cylinder wall reinforcing part is provided with a cylinder wall reinforcing and fixing part, and the cylinder wall reinforcing and fixing part protrudes out of the plane of the cylinder wall reinforcing part; and/or the port reinforcing part is provided with a port reinforcing fixing part, and the port reinforcing fixing part protrudes out of the plane of the port reinforcing part. The fixing piece is arranged in the sintering process and can effectively fix the relative position between the castable and the kiln mouth protection reinforcing mechanism, so that the thermal stress of the castable can be effectively released in the sintering and curing process, the castable is not easy to deform in the later use process, the fixation of the position between the castable and the kiln mouth protection reinforcing mechanism is ensured, and the occurrence of structural defects is reduced as much as possible.
Preferably, the cylinder wall reinforcing and fixing piece is a cylinder wall reinforcing and fixing nail; and/or the port reinforcing fixture is a port reinforcing fixture nail.
Preferably, a connection part fixing part is arranged on the cylinder wall reinforcing part and/or the port reinforcing part at the joint of the cylinder wall reinforcing part and the port reinforcing part, and the protruding direction of the connection part fixing part is inclined to the plane where the cylinder wall reinforcing part and the port reinforcing part are located. The arrangement of the connecting part fixing piece is beneficial to the combination of the castable at the connecting position of the cylinder wall reinforcing piece and the port reinforcing piece, and the improvement of the integral structural performance of the castable.
Preferably, the cylinder wall reinforcement is provided with a bolt mounting portion for mounting a bolt on the cylinder wall reinforcement. In the prior art, the kiln mouth guard plate is generally directly arranged on the kiln mouth inner cylinder, and the kiln mouth guard plate is generally connected with the kiln mouth inner cylinder through the bolt hole by using the bolt.
According to the kiln mouth protection unit, a plurality of kiln mouth protection units can be modularly arranged on the kiln mouth inner cylinder, each kiln mouth protection unit comprises a protection reinforcing mechanism and a protection casting material, and the protection reinforcing mechanism is the protection reinforcing mechanism;
the protective castable comprises a cylinder wall castable and a port castable, the cylinder wall castable is connected with one side of the port castable, the cylinder wall castable corresponds to the position of the inner cylinder wall of the kiln opening, and the port castable corresponds to the position of the port of the kiln opening; and the cylinder wall pouring material and the port pouring material are respectively provided with a cylinder wall reinforcing piece and a port reinforcing piece. The protective casting material is arranged outside the protective reinforcing mechanism in the kiln opening protective unit, and the protective reinforcing mechanism and the protective casting material form a whole body, so that the occurrence of structural damage caused by high-temperature thermal expansion due to high working condition temperature in the use process is favorably reduced.
Preferably, the cylinder wall castable comprises cylinder wall outer layer castable and cylinder wall inner layer castable, wherein the cylinder wall outer layer castable is arranged on one side, away from the kiln mouth cylinder wall, of the cylinder wall reinforcing piece, and the cylinder wall inner layer castable is arranged on one side, close to the kiln mouth cylinder wall, of the cylinder wall reinforcing piece.
Preferably, the port castable comprises port outer layer castable on one side of the port reinforcing piece far away from the kiln mouth port and port inner layer castable on one side of the port reinforcing piece close to the kiln mouth port.
Preferably, the cylinder wall outer layer casting material and the cylinder wall inner layer casting material are connected through a cylinder wall reinforcing through hole in the cylinder wall reinforcing piece; and/or the port outer layer casting material and the port inner layer casting material are connected through a port reinforcing through hole on the port reinforcing piece.
Preferably, one surface of the port pouring material corresponding to the port is a port corresponding surface, the other end of the port pouring material corresponding to the cylinder wall pouring material is provided with a cylinder outer side mounting part in a protruding mode on the port corresponding surface, and one side surface of the cylinder outer side mounting part corresponding to the cylinder wall pouring material is a cylinder outer side corresponding surface.
Preferably, the furnace wall pouring material further comprises a bolt, one surface of the furnace wall pouring material, which corresponds to the inner wall of the kiln opening, is a wall mounting surface, and the bolt protrudes out of the wall mounting surface.
According to the rotary kiln, the kiln opening inner cylinder of the rotary kiln is annularly provided with the plurality of kiln opening protection units, and the kiln opening protection units are arranged on the kiln opening protection unit.
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
compared with the scheme that the kilneye protection plate is installed on the kilneye firstly and then the castable is coated on the kilneye protection plate in the prior art, the scheme of the invention can be prefabricated and molded, can be directly installed on the kilneye after being prefabricated, and is different from the previous scheme that the kilneye protection plate is installed on the kilneye and the single-layer castable is adopted; the protection reinforcing mechanism can be made of a metal material with better toughness, the toughness and high thermal shock resistance of the metal material are utilized, the castable can be sintered and solidified in advance in the prefabricating process, the thermal stress of the castable can be effectively released, the overall wear resistance and corrosion resistance of the kiln opening protection unit are ensured, and the service life is further prolonged obviously.
Drawings
FIG. 1 is a schematic view of a combined structure of a kiln opening protection unit and an internal protection reinforcing mechanism thereof according to the present invention;
FIG. 2 is a schematic structural view of a kiln mouth protection reinforcing mechanism of the present invention;
FIG. 3 is a schematic structural diagram of a kilneye protection unit of the invention;
FIG. 4 is a schematic view of the installed protective device at the kiln opening of the rotary kiln.
The reference numerals in the schematic drawings illustrate:
001. a kiln mouth protection unit; 002. an inner barrel of a kiln mouth;
100. a protection reinforcing mechanism; 110. a cylinder wall reinforcement; 111. the cylinder wall strengthens the through hole; 112. a cylinder wall reinforcing and fixing member;
120. a port reinforcement; 121. a port reinforcement through hole; 122. a port reinforcement fixture; 131. a connecting part fixing member;
141. a bolt; 142. a bolt mounting portion;
200. a protective castable; 210. pouring materials on the cylinder wall; 211. a cylinder wall mounting surface; 212. pouring materials on the outer layer of the cylinder wall; 213. the inner layer of the cylinder wall is made of casting material;
220. port castable; 221. a port corresponding surface; 222. pouring a port outer layer; 223. port inner layer castable; 230. a barrel outer side mounting portion; 231. the corresponding surface of the outer side of the cylinder.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The structures, proportions, and dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and therefore, the present disclosure is not limited to the essential meanings of the technology, and any modifications of the structures, changes of the proportions, or adjustments of the dimensions, should be within the scope of the disclosure without affecting the efficacy and attainment of the same. Meanwhile, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description only, and are not used to limit the implementable scope, and the relative relationship changes or adjustments may be considered to be within the implementable scope of the present invention without substantial technical changes; in addition, the embodiments of the present invention are not independent of each other, but may be combined.
In the production method of the kilneye protection unit of the embodiment of the invention, the reinforcing mechanism is placed in the mold, and the castable is added into the mold, so that the reinforcing mechanism is positioned in the castable; and then solidifying the casting material, and sintering the kiln mouth protection unit after the casting material is solidified to obtain a finished kiln mouth protection unit product. By the mode, the kiln mouth protection unit can be sintered outside the rotary kiln field, and the structural performance of the kiln mouth protection unit can be strengthened.
Wherein the material used by the reinforcing mechanism is a stainless steel plate; in the embodiment, the material which can be selected is a 316L stainless steel plate, and by combining the preparation method, as the part formed by the casting material has better structural performance after sintering, the reinforcing mechanism can play an internal reinforcing role, and a stainless steel material with better toughness can be used, so that not only the structural performance is further improved, but also the stainless steel material is corrosion-resistant, and the service life of the stainless steel material can be further improved.
The reinforcing mechanism is manufactured by making the reinforcing mechanism comprise the cylindrical wall reinforcing part 110 and the port reinforcing part 120, and making the planes of the cylindrical wall reinforcing part 110 and the port reinforcing part 120 perpendicular to each other and connecting one side of the two parts.
When the reinforcing mechanism is produced, the cylinder wall reinforcing member 110 and the port reinforcing member 120 are respectively provided with a cylinder wall reinforcing through hole 111 and a port reinforcing through hole 121, so that casting materials on two sides of the positions of the cylinder wall reinforcing member 110 and the port reinforcing member 120 can penetrate through the cylinder wall reinforcing through hole 111 and the port reinforcing through hole 121 to be connected.
In addition, when the reinforcing mechanism is produced, the cylindrical wall reinforcing member 110 and the port reinforcing member 120 are respectively provided with a cylindrical wall reinforcing fixing member 112 and a port reinforcing fixing member 122, and the cylindrical wall reinforcing fixing member 112 and the port reinforcing fixing member 122 respectively protrude from the plane where the cylindrical wall reinforcing member 110 and the port reinforcing member 120 are located.
And in the pouring process, one end of the cylinder wall reinforcing and fixing part 112 and/or the port reinforcing and fixing part 122, which is far away from the reinforcing mechanism, is contacted with the mold, so that the reinforcing mechanism is suspended in the mold, and pouring materials exist on two sides of the reinforcing mechanism.
Before pouring, fixing the bolt 141 for fixing the kiln mouth protection unit on the reinforcing mechanism, and placing the reinforcing mechanism fixed with the bolt 141 in a mold for pouring; which facilitates positioning of the bolt 141 and thus facilitates subsequent further installation.
The kiln mouth protection unit is produced by the production method.
According to the installation method of the kilneye protection unit, the kilneye protection unit is prepared through the kilneye protection unit production method, then the kilneye protection units are transported to a rotary kiln installation site, and then the kilneye protection units are installed to a kilneye.
In addition, as shown in fig. 1, in the kilneye protection unit of the invention, as shown in fig. 4, a plurality of kilneye protection units 001 can be modularly installed on a kilneye inner cylinder 002, and each kilneye protection unit 001 comprises a protection reinforcing mechanism 100 and a protection castable 200.
As shown in fig. 3, the protective castable 200 includes a cylinder wall castable 210 and a port castable 220, the cylinder wall castable 210 is connected to one side of the port castable 220, the cylinder wall castable 210 corresponds to the position of the cylinder wall in the kiln inlet, and the port castable 220 corresponds to the position of the port in the kiln inlet; the cylinder wall casting material 210 and the port casting material 220 are respectively provided with a cylinder wall reinforcement 110 and a port reinforcement 120. The protective castable 200 is arranged outside the protective reinforcing mechanism 100 in the kiln opening protective unit 001, and the protective reinforcing mechanism 100 and the protective castable 200 form a whole, so that the structural damage caused by high-temperature thermal expansion generated due to higher working condition temperature in the use process is favorably reduced.
As shown in fig. 1 and 2, the protection reinforcing mechanism 100 includes a cylinder wall reinforcing member 110 and a port reinforcing member 120; the cylinder wall reinforcing part 110 is connected with one side of the port reinforcing part 120, and the plane of the cylinder wall reinforcing part 110 is vertical to the plane of the port reinforcing part 120; the cylinder wall reinforcing member 110 can be arranged in the kiln outlet cylinder wall inner cylinder wall castable 210, and the port reinforcing member 120 can be arranged in the kiln outlet port castable 220.
Through the arrangement, the kiln mouth protection reinforcing mechanism is integrally provided with higher strength through the connection of the cylinder wall reinforcing piece 110 and the port reinforcing piece 120, and in addition, the kiln mouth protection reinforcing mechanism can be respectively used in the castable 210 of the inner cylinder wall of the kiln mouth cylinder wall and the castable 220 of the port of the kiln mouth, so that the local part of the castable has better strength, a whole is formed between the kiln mouth protection reinforcing mechanism and the castable, and the occurrence of structural damage caused by high-temperature thermal expansion due to higher working condition temperature in the using process is favorably reduced.
In this embodiment, the casting material 210 for the cylinder wall includes an outer casting material 212 for a cylinder wall at a side of the cylinder wall reinforcement 110 away from the cylinder wall of the kiln inlet and an inner casting material 213 for a cylinder wall at a side of the cylinder wall reinforcement 110 close to the cylinder wall of the kiln inlet, and the casting material 220 for the port includes an outer casting material 222 for a port at a side of the port reinforcement 120 away from the kiln inlet port and an inner casting material 223 for a port at a side of the port reinforcement 120 close to the kiln inlet port. The technical scheme is different from the conventional scheme of a kiln mouth protective plate and a single-layer castable on a kiln mouth, the strength of the kiln mouth protective plate is limited in the prior art, and in addition, the kiln mouth protective plate and the single-layer castable are not integrated, so that the problem that the castable falls off from the kiln mouth protective plate is inevitable.
In this embodiment, the cylinder wall reinforcing member 110 is a cylinder wall reinforcing plate, and the cylinder wall reinforcing plate is provided with a cylinder wall reinforcing through hole 111; the port reinforcing member 120 may also be a port reinforcing plate, the port reinforcing through hole 121 is formed in the port reinforcing plate, and in a production process, after the fluidized castable is poured, the pouring material penetrates through the barrel wall reinforcing through hole 111 and the port reinforcing through hole 121, so that the combination of the castable and the kiln mouth protection reinforcing mechanism is facilitated, the connection between the castable at different positions is facilitated, and the local strength of the castable and the connection integrity of the kiln mouth protection reinforcing mechanism and the castable are further improved. The cylinder wall outer layer casting material 212 and the cylinder wall inner layer casting material 213 are connected through the cylinder wall reinforcing through hole 111 on the cylinder wall reinforcing part 110; the port outer layer potting compound 222 and the port inner layer potting compound 223 can also be connected via a port reinforcement through-hole 121 in the port reinforcement 120.
In addition, in this embodiment, the cylinder wall reinforcing member 110 is provided with a cylinder wall reinforcing fixing member 112, and the cylinder wall reinforcing fixing member 112 protrudes out of the plane where the cylinder wall reinforcing member 110 is located; the port reinforcement member 120 may also be provided with a port reinforcement fixing member 122, and the port reinforcement fixing member 122 protrudes out of the plane of the port reinforcement member 120; in this embodiment, the cylinder wall reinforcing and fixing member 112 is a cylinder wall reinforcing and fixing nail; and/or the port reinforcing fixture 122 is a port reinforcing fixture nail.
It should be noted that, the use of the fixing member can improve the connection strength between the kiln mouth protection reinforcing mechanism and the castable, and on the other hand, in the invention, the castable is required to be sintered and cured after being poured outside the kiln mouth protection reinforcing mechanism, and the fixing member is arranged in the sintering process, so that the relative position between the castable and the kiln mouth protection reinforcing mechanism can be effectively fixed, the thermal stress of the castable can be effectively released in the sintering and curing process, the castable is not easy to deform in the later use process, in addition, the fixation of the position between the castable and the kiln mouth protection reinforcing mechanism is ensured, and the occurrence of structural defects is reduced as much as possible.
In addition, at the connection position of the cylindrical wall reinforcing member 110 and the port reinforcing member 120, a connection part fixing member 131 is arranged on the cylindrical wall reinforcing member 110 and/or the port reinforcing member 120, and the protruding direction of the connection part fixing member 131 is inclined to the plane where the cylindrical wall reinforcing member 110 and the port reinforcing member 120 are located. The arrangement of the joint fixing member 131 is beneficial to the combination of the casting material at the joint position of the cylinder wall reinforcing member 110 and the port reinforcing member 120, and is beneficial to improving the overall structural performance of the casting material.
In this embodiment, the cylindrical wall reinforcement 110 is provided with a bolt mounting portion 142 for mounting the bolt 141 on the cylindrical wall reinforcement 110. In the prior art, the kiln mouth guard plate is generally directly arranged on the kiln mouth inner cylinder, and the kiln mouth guard plate and the kiln mouth inner cylinder are generally connected through bolt holes by using bolts, but in the invention, the inner protection reinforcing mechanism 100 and the outer castable are in a structure, so that the connection is difficult to be directly performed through the bolts as in the prior art, the bolt installation part 142 is arranged on the cylinder wall reinforcing piece 110, and the bolts 141 are installed on the cylinder wall reinforcing piece 110, so that the bolts 141 can be effectively positioned and fixed with high strength. The kiln mouth protection unit of the embodiment further comprises a bolt 141, one surface of the cylinder wall castable 210 corresponding to the inner cylinder wall of the kiln mouth is a cylinder wall mounting surface 211, and the bolt 141 protrudes out of the cylinder wall mounting surface 211.
One surface of the port pouring material 220 corresponding to the port is a port corresponding surface 221, the other end of the port pouring material 220 opposite to the cylinder wall pouring material 210 is provided with a cylinder outer side mounting part 230 in a protruding mode on the port corresponding surface 221, and one side surface of the cylinder outer side mounting part 230 opposite to the cylinder wall pouring material 210 is a cylinder outer side corresponding surface 231.
As shown in fig. 4, in the rotary kiln of the present invention, a plurality of kilneye protection units 001 are annularly arranged on a kilneye inner tube 002 of the rotary kiln, and the kilneye protection units 001 are the kilneye protection units 001.
The kilneye protection unit can be prefabricated and molded outside a rotary kiln construction site, can be directly installed on a kilneye after being prefabricated, and is different from the previous scheme of a kilneye upper kilneye protection plate and a single-layer castable material; the protection reinforcing mechanism 100 can be made of a metal material with better toughness, the material used by the reinforcing mechanism in this embodiment is a 316L stainless steel plate, the toughness and high thermal shock resistance of the metal material are utilized, the castable can be sintered and cured in advance in the prefabricating process, the thermal stress of the castable can be effectively released, the overall wear resistance and corrosion resistance of the kiln mouth protection unit are ensured, and the service life is further obviously prolonged.
The invention has been described in detail hereinabove with reference to specific exemplary embodiments thereof. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined in the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to be illustrative of the state of the art as developed and the meaning of the present technology and is not intended to limit the field of application of the present invention.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, combined, e.g., between various embodiments, adapted and/or substituted, as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (10)
1. A production method of a kiln mouth protection unit is characterized in that a reinforcing mechanism is placed in a mold, and casting material is added into the mold, so that the reinforcing mechanism is positioned in the casting material; and then solidifying the casting material, and sintering the kiln mouth protection unit after the casting material is solidified to obtain a finished kiln mouth protection unit product.
2. A method for producing a kiln mouth guard unit according to claim 1, characterized in that the reinforcing means comprises a cylinder wall reinforcing member (110) and a port reinforcing member (120), and the reinforcing means is produced by connecting the planes of the cylinder wall reinforcing member (110) and the port reinforcing member (120) with each other in a vertical manner.
3. The method for producing the kilneye protection unit according to claim 1, characterized in that the material used for the reinforcing mechanism is stainless steel plate.
4. The method for producing a kilneye protection unit as claimed in claim 3, wherein the material used for the reinforcing mechanism is 316L stainless steel plate.
5. The production method of the kiln mouth protection unit as claimed in claim 2, wherein when the reinforcing mechanism is produced, the cylinder wall reinforcing member (110) and the port reinforcing member (120) are respectively provided with a cylinder wall reinforcing through hole (111) and a port reinforcing through hole (121), so that the casting materials on two sides of the positions of the cylinder wall reinforcing member (110) and the port reinforcing member (120) can be connected in a penetrating way through the cylinder wall reinforcing through hole (111) and the port reinforcing through hole (121).
6. The method for producing the kiln mouth protection unit according to claim 2, wherein when the reinforcing mechanism is produced, the cylinder wall reinforcing member (110) and the port reinforcing member (120) are respectively provided with a cylinder wall reinforcing fixing member (112) and a port reinforcing fixing member (122), and the cylinder wall reinforcing fixing member (112) and the port reinforcing fixing member (122) respectively protrude out of the plane of the cylinder wall reinforcing member (110) and the plane of the port reinforcing member (120).
7. A production method of a kiln mouth protection unit according to claim 6, characterized in that during casting, one end of the cylinder wall reinforcing fixing member (112) and/or the port reinforcing fixing member (122) far away from the reinforcing mechanism is contacted with the mold, so that the reinforcing mechanism is suspended in the mold, and casting materials are arranged on two sides of the reinforcing mechanism.
8. A production method of a kilneye protection unit as claimed in claim 1, characterized in that, before casting, bolts (141) for fixing the kilneye protection unit are fixed on the reinforcing mechanism, and the reinforcing mechanism fixed with the bolts (141) is placed in a mould for casting.
9. A kiln mouth protection unit is characterized in that the kiln mouth protection unit is produced by the production method according to any one of claims 1 to 8.
10. A method for installing a kilneye protection unit, characterized by preparing the kilneye protection unit by the kilneye protection unit production method according to any one of claims 1 to 8, then transporting a plurality of kilneye protection units to a rotary kiln installation site, and then installing the kilneye protection units to a kilneye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086851.7A CN114523545A (en) | 2022-01-25 | 2022-01-25 | Kiln opening protection unit, production method and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210086851.7A CN114523545A (en) | 2022-01-25 | 2022-01-25 | Kiln opening protection unit, production method and installation method thereof |
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| CN114523545A true CN114523545A (en) | 2022-05-24 |
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| CN202210086851.7A Pending CN114523545A (en) | 2022-01-25 | 2022-01-25 | Kiln opening protection unit, production method and installation method thereof |
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