CN204757658U - Gangue tunnel cave preheating section structure - Google Patents
Gangue tunnel cave preheating section structure Download PDFInfo
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- CN204757658U CN204757658U CN201520276883.9U CN201520276883U CN204757658U CN 204757658 U CN204757658 U CN 204757658U CN 201520276883 U CN201520276883 U CN 201520276883U CN 204757658 U CN204757658 U CN 204757658U
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- kiln
- wall
- preheating section
- service aisle
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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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The utility model discloses a gangue tunnel cave preheating section structure, its characterized in that: including the kiln body and the internal kiln car that traveles of kiln, the kiln body include kiln crown, kiln wall and service aisle, and kiln wall is including being used for fixing the wall body high platform on the ground, and wall body high platform adopts the hair brick body to build, be provided with the bed hedgehopping layer of adopting concrete placement to form on the wall body high platform, all be provided with on the bed hedgehopping layer and lean on the service aisle to incline on the bed hedgehopping layer and be provided with the sand seal groove structure that is used for sealed kiln car bottom space to the thermal -insulated heat preservation of first wall body layer, second cavity layer, cavity and the third wall body layer that set gradually outward from interior, the utility model discloses insulation construction not only construction convenience is quick, and energy -conservation and environmental protection advantage have improved the heat preservation effect moreover, have reduced the energy consumption, sand seal groove structure sets up rationally, and the intensity in sand seal groove is higher, and the wall between the steel skirtboard of kiln car both sides and the sand seal groove of side wall is effectual.
Description
Technical field
The utility model relates to a kind of gangue tunnel cave preheating section structure.
Background technology
Tunnel cave is generally a long linear tunnel, and fixing wall and vault are arranged at its both sides and top, and the track that bottom is laid runs kiln car.Combustion apparatus is located at the both sides, middle part of tunnel cave, constitute fixing high temperate zone--clinkering zone, the high-temperature flue gas that burning produces is under the effect of tunnel cave front end chimney or air-introduced machine, flow along tunnel to kiln hood direction, preheating enters the goods in kiln step by step simultaneously, and this section constitutes the preheating zone of tunnel cave.Blast cold wind at the kiln tail of tunnel cave, the goods of latter a section in cooling tunnel kiln, the cold wind blasted flows through goods and after being heated, then extracts out and send into the thermal source of drier as dried, and this section just constitutes the salband of tunnel cave.In existing refractory material production process, consider cost factor, mostly adopt gangue as combustion material, gangue is the solid waste discharged in coal mining process and coal washing process, is a kind of black gray expandable rock lower, harder than coal with a kind of phosphorus content of coal seam association in coalification course.Comprise choose from the spoil of extraction top board, base plate and interlayer and coal washing process in the digging gangue in tunnelling process, mining process wash spoil.In the process firing refractory material, there is following problem: the heat insulation effect of kiln body is poor in existing gangue tunnel preheating section of kiln, causes energy to run off more, affect production cost and product quality; Sand sealing groove vibrational power flow is unreasonable, sand sealing groove cannot arrange very high height because of intensity restriction, causes the partition weak effect between the steel skirtboard of kiln car both sides and the sand sealing groove of side wall, makes cold air easily leak in people's kiln, hot gas also easily spills outside kiln, affects production cost and product quality; Kiln top heat insulation structural arranges unreasonable, causes kiln top insulating to obtain powerful support, limits the thickness of kiln top insulating, have impact on heat insulation effect.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, the gangue tunnel cave preheating section structure that better heat preservation, sand sealing groove intensity are good, kiln top heat insulation structural structural strength is high.
The technical scheme in the invention for solving the above technical problem is:
A kind of gangue tunnel cave preheating section structure, it is characterized in that: the kiln car comprising kiln body and travel in described kiln body, kiln body comprises Yao Ding, kiln wall and service aisle, kiln wall comprises the body of wall plateau for being fixed on ground, body of wall plateau adopts rubble brick body to be built into, and described body of wall plateau is provided with the padded layer adopting concreting, padded layer is provided with the first body of wall layer set gradually from the inside to the outside, second cavity layer, cavity insulating and the 3rd body of wall layer, described first body of wall layer adopts concreting to form, second cavity layer adopts light fire brick to be built into, 3rd body of wall layer adopts brick body to be built into, supporting layer is provided with between described second cavity layer and padded layer, described supporting layer adopts brick body to be built into, the separation layer adopting refractory brick to form is provided with between supporting layer and the 3rd body of wall layer, the articulamentum adopting concreting is provided with between first body of wall layer and supporting layer, the medial surface 30mm-60mm of the medial surface distance first body of wall layer of articulamentum, the medial surface 80mm-120mm of the medial surface distance supporting layer of articulamentum, the track structure travelled for kiln car is provided with in service aisle, described track structure comprises track plateau and track installation layer, described track plateau adopts rubble brick body to be built into, the width of track plateau is 500mm-900mm, track installation layer adopts concreting to form, be embedded with U bolt in track installation layer, be provided with track between the two ends of U bolt, described track is fixed on U bolt by pressure strip, padded layer is provided with the sand sealing groove structure for sealing kiln car bottom space by service aisle side, described sand sealing groove comprises the angle steel be embedded in padded layer, angle steel is 20 °-70 ° and is obliquely installed, angle steel is welded with dowel by service aisle side, the top of dowel is fixed with sand sealing groove angle steel, the cross section of described sand sealing groove angle steel is L-shaped, the side of described dowel is welded with reinforcement steel plate, described sand sealing groove angle steel is fitted in be strengthened steel plate and is bolted sand sealing groove angle steel and strengthens steel plate, the appearance sand launder for holding sealing sand is formed between sand sealing groove angle steel and padded layer, kiln top comprises kiln lamina tecti, the below of kiln lamina tecti is fixed with elevator, the lower end of elevator connects kiln top insulating, the two ends up and down of elevator are provided with inserting groove, preheating section is provided with kiln top insulating, the below of kiln top insulating is provided with the support boatswain chair for kiln top insulating, and described boatswain chair is connected on elevator by steel wire rope.
As preferably, preheating section vibrational power flow has throwing sandpipe, the padded layer of inducer is provided with adopt light fire brick be built into the 4th before body of wall layer, body of wall layer before described throwing sandpipe oblique cutting enters the 4th, the inside and outside two ends of throwing sandpipe pass from both sides inside and outside body of wall layer before the 4th respectively, throwing sandpipe is 20 °-70 ° and is obliquely installed, and the outer end of throwing sandpipe is provided with the throwing sandpipe cover plate being hinged on and throwing on sandpipe.
As preferably, preheating section vibrational power flow has fume extractor, fume extractor comprises multiple first tube connectors be arranged on above kiln lamina tecti, the two ends of described first tube connector are communicated with the second tube connector respectively, two the second tube connectors penetrate kiln wall from the both sides of preheating section structure respectively and are communicated in service aisle, the below of described first tube connector is communicated with multiple the 3rd tube connector that is set in distance, described 3rd tube connector is in vertically arranging and penetrate kiln top to be communicated in service aisle, realize being communicated with by the 4th tube connector between first tube connector, 4th tube connector access smoking blower fan, be provided with every hollow plate between adjacent orbit mounting layer in the service aisle of preheating section structure, describedly adopt pea gravel concreten to be built into every empty version, be arranged on above the space between adjacent orbit mounting layer every empty version.
The utility model compared with prior art, has the following advantages and effect:
1) not only easy construction is quick for insulation construction, and energy-conservation and environment-friendly advantage, improves heat insulation effect, reduces energy consumption;
2) sand sealing groove vibrational power flow is reasonable, the intensity of sand sealing groove is higher, partition between the steel skirtboard of kiln car both sides and the sand sealing groove of side wall is effective, improve integral sealing effect, cold air is made not allow in leakiness people kiln, hot gas is not easy to spill outside kiln, ensure that production cost and product quality, simple and reliable for structure, cost is low, long service life.
3) kiln top heat insulation structural arranges rationally, and kiln top insulating can powerful support, can arrange thicker kiln top insulating, ensure that heat insulation effect, and structure is simple, the easy construction of kiln top, and construction cost is low;
4) throw sand by throwing sandpipe, the sand in sand sealing groove can supplement in process of production at any time, and sand can be driven forward by sand sealing knife, does not need manually to enter in kiln to add sand, and eliminate hand labor and drop into, structure is simple, easy construction;
5) by arranging multiple discharge duct, carrying out central exhaust, making the negative pressure of kiln hood be unlikely to too large, solve existing structure Problems existing, and have adjusted the temperature curve in kiln, ensure that quality of finished in kiln, and arrange every hollow plate, and reduce the flow effect in kiln.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment gangue tunnel cave.
Fig. 2 is the cross section structure schematic diagram at A-A place in Fig. 1 in the utility model embodiment.
Fig. 3 is the cross section structure schematic diagram at B-B place in Fig. 1 in the utility model embodiment.
Fig. 4 is the cross section structure schematic diagram at C-C place in Fig. 1 in the utility model embodiment.
Fig. 5 is the cross section structure schematic diagram at D-D place in Fig. 1 in the utility model embodiment.
Fig. 6 is the cross section structure schematic diagram at E-E place in Fig. 1 in the utility model embodiment.
Fig. 7 is the cross section structure schematic diagram at F-F place in Fig. 1 in the utility model embodiment.
Fig. 8 is the cross section structure schematic diagram at G-G place in Fig. 1 in the utility model embodiment.
Fig. 9 is the cross section structure schematic diagram at H-H place in Fig. 1 in the utility model embodiment.
Figure 10 is the utility model embodiment middle orbit mounting structure schematic diagram.
Figure 11 is the structural representation of sand sealing groove structure in the utility model embodiment.
Figure 12 is the Elevator structure schematic diagram in the utility model embodiment.
Figure 13 is the mounting structure schematic diagram of suspended block and axle brick in the utility model embodiment.
Figure 14 is the structural representation throwing sandpipe in the utility model embodiment.
Figure 15 is the mounting structure schematic diagram of air blast in the utility model embodiment.
Figure 16 is the mounting structure schematic diagram of another angle air blast in the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
See Fig. 1-Figure 16, the present embodiment gangue tunnel cave, comprise the kiln body extended transversely and the kiln car travelled in described kiln body, kiln body comprises Yao Ding, kiln wall and service aisle 1, service aisle 1 comprises inducer L1, preheating section L2, furnace zone L3, soaking zone L4 and cooling section L5 in the direction of extension successively, kiln wall comprises the body of wall plateau 21 for being fixed on ground, body of wall plateau 21 adopts rubble brick body to be built into, and described body of wall plateau 21 is provided with the padded layer 22 adopting concreting.
Preheating section L2, furnace zone L3, the padded layer 22 of soaking zone L4 and cooling section L5 is provided with the first body of wall layer 23 set gradually from the inside to the outside, second cavity layer 24, cavity insulating 25 and the 3rd body of wall layer 26, described first body of wall layer 23 adopts concreting to form, second cavity layer 24 adopts light fire brick to be built into, 3rd body of wall layer 26 adopts brick body to be built into, supporting layer 27 is provided with between described second cavity layer 24 and padded layer 22, described supporting layer 27 adopts brick body to be built into, the separation layer 28 adopting refractory brick to form is provided with between supporting layer 27 and the 3rd body of wall layer 26, the articulamentum 29 adopting concreting is provided with between first body of wall layer 23 and supporting layer 27, the medial surface 30mm-60mm of the medial surface distance first body of wall layer 23 of articulamentum 29, the medial surface 80mm-120mm of the medial surface distance supporting layer 27 of articulamentum.
Track 34 structure travelled for kiln car is provided with in the service aisle 1 of inducer L1, preheating section L2, furnace zone L3, soaking zone L4 and cooling section L5, described track 34 structure comprises track plateau 31 and track installation layer 32, described track plateau 31 adopts rubble brick body to be built into, the width of track plateau 31 is 500mm-900mm, track installation layer 32 adopts concreting to form, U bolt 33 is embedded with in track installation layer 32, be provided with track 34 between the two ends of U bolt 33, described track 34 is fixed on U bolt 33 by pressure strip 35.
Inducer L1, preheating section L2, furnace zone L3, the padded layer 22 of soaking zone L4 and cooling section L5 is provided with the sand sealing groove structure 41 for sealing kiln car bottom space by service aisle 1 side, described sand sealing groove comprises the angle steel 42 be embedded in padded layer 22, angle steel 42 is obliquely installed in 20 °-70 °, angle steel 42 is welded with dowel 43 by service aisle 1 side, the top of dowel 43 is fixed with sand sealing groove angle steel 44, the cross section of described sand sealing groove angle steel 44 is L-shaped, the side of described dowel 43 is welded with strengthens steel plate 45, described sand sealing groove angle steel 44 is fitted in be strengthened steel plate 45 and is bolted sand sealing groove angle steel 44 and strengthens steel plate 45, the appearance sand launder 46 for holding sealing sand is formed between sand sealing groove angle steel 44 and padded layer 22.
Kiln top comprises kiln lamina tecti, and the two ends of kiln lamina tecti are supported on the top of the 3rd body of wall layer 26.
The below of the kiln lamina tecti of preheating section L2, furnace zone L3, soaking zone L4 and cooling section L5 is fixed with elevator 51, the lower end of elevator 51 connects kiln top insulating 52, the two ends up and down of elevator 51 are provided with inserting groove 511, preheating section L2, furnace zone L3, soaking zone L4 are provided with kiln top insulating 52, the below of kiln top insulating 52 is provided with the support boatswain chair 53 for kiln top insulating 52, and described boatswain chair is connected on elevator 51 by steel wire rope.
Preheating section L2 is provided with and throws sandpipe 61, air intake structure, the padded layer 22 of inducer L1 is provided with adopt light fire brick be built into the 4th before body of wall layer 62, body of wall layer 62 before described throwing sandpipe 61 oblique cutting enters the 4th, the inside and outside two ends of throwing sandpipe 61 pass from both sides inside and outside body of wall layer 62 before the 4th respectively, throw sandpipe 61 to be obliquely installed in 20 °-70 °, the outer end of throwing sandpipe 61 is provided with the throwing sandpipe cover plate 63 being hinged on and throwing on sandpipe 61.
Described air intake structure comprises the air inlet duct 71 outside the kiln wall being arranged on inducer L1, described air inlet duct 71 adopts light fire brick to be built into, described inducer L1 is provided with the air inlet pipe 72 penetrating body of wall plateau 21 from air inlet duct 71, the inner of described air inlet pipe 72 is arranged on the medium position of service aisle 1, the two ends being provided with the first track cover plate 73, first track cover plate 73 in the service aisle 1 of inducer L1 are fixed on adjacent two track installation layers 32.
Preheating section L2 is provided with fume extractor, fume extractor comprises multiple first tube connectors 81 be arranged on above kiln lamina tecti, the two ends of described first tube connector 81 are communicated with the second tube connector 82 respectively, two the second tube connectors 82 penetrate kiln wall from the both sides of preheating section L2 respectively and are communicated in service aisle 1, the below of described first tube connector 81 is communicated with multiple the 3rd tube connector 83 that is set in distance, described 3rd tube connector 83 is in vertically arranging and penetrate kiln top to be communicated in service aisle 1, realize being communicated with by the 4th tube connector 84 between first tube connector 81, 4th tube connector 84 accesses smoking blower fan.
Be provided with between adjacent orbit mounting layer 32 in the service aisle 1 of preheating section L2 every hollow plate 102, describedly adopt pea gravel concreten to be built into every empty version, be arranged on above the space between adjacent orbit mounting layer 32 every empty version.
Furnace zone L3 is provided with the throwing texture of coal for throwing in gangue, throw texture of coal to comprise and penetrate kiln top from the top on kiln top and the throwing coal pipe 11 being communicated to service aisle 1, described throwing coal pipe 11 comprises throws pipe 111 and pipe 112 under throwing coal on coal, on described throwing coal, pipe 111 and throwing under coal is connected by flange arrangement 113 between pipe 112, on described throwing coal, the top of pipe 111 realizes sealing by throwing coal pipe lid 114, described throwing coal pipe lid 114 being provided with for mentioning the handle 115 throwing coal pipe lid 114, throwing on coal and pipe 111 is welded with the retainer ring 116 being against kiln top.
Furnace zone L3 is provided with and first send hot air apparatus for what control temperature in service aisle 1, first send hot air apparatus to comprise is arranged on the 5th tube connector 85 on kiln top, the below of described first tube connector 81 is communicated with multiple the 6th tube connector 86 that is set in distance, 6th tube connector 86 is in vertically arranging and penetrate kiln top to be communicated in service aisle 1, and the 5th tube connector 85 is connected to and send air-heater 101.
Soaking zone L4 is provided with and second send hot air apparatus for what control temperature in service aisle 1, second send hot air apparatus to comprise is arranged on multiple 7th tube connectors 87 above kiln lamina tecti, the two ends of described 6th tube connector 87 are communicated with the 8th tube connector 88 respectively, two the 8th tube connectors 88 penetrate kiln wall from the both sides of soaking zone L4 respectively and are communicated in service aisle 1, the below of described 7th tube connector 87 is communicated with multiple the 9th tube connector 89 that is set in distance, described 9th tube connector 89 is in vertically arranging and penetrate kiln top to be communicated in service aisle 1, realize being communicated with and being connected to sending air-heater 101 by the tenth tube connector 810 between 7th tube connector 87, in the service aisle 1 sending air-heater 101 to be connected to preheating section L2.
Preheating section L2 and furnace zone L3 is provided with for sensing the baroceptor of service aisle 1 internal gas pressure and the temperature sensor for sensing the temperature in service aisle 1, temperature sensor and baroceptor connection control system, control system connects air-heater, cooling section L5 is provided with for air-blast device pressure balanced in service aisle 1, described air-blast device comprises air blast 121, the air blast erecting bed 122 adopting refractory brick to be built into is provided with between adjacent two track plateau 31 in service aisle 1, air blast erecting bed 122 is provided with air blast 121 installing hole for installing air blast 121, service aisle 1 bottom surface residing for described air blast erecting bed 122 is 15 °-35 ° and is obliquely installed, air-blast device connection control system.
Soaking zone L4 is provided with suspended block 131 structure, described suspended block 131 structure comprises successively near multiple suspended blocks 131 of arrangement, described suspended block 131 is in inverted T-shape, the upper end of described suspended block 131 is provided with the inserted terminal 1311 for snapping in elevator 51 lower end inserting groove 511, the both sides, lower end of described suspended block 131 are provided with semicircular axle brick 132 installing hole, axle brick 132 installing hole of adjacent two suspended blocks 131 is spliced into axle brick 132 hole of inserting for axle brick 132, is filled with insulation material between adjacent two suspended blocks 131.
Above content described in this description is only to the explanation of the utility model example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of the utility model description or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (3)
1. a gangue tunnel cave preheating section structure, it is characterized in that: the kiln car comprising kiln body and travel in described kiln body, kiln body comprises Yao Ding, kiln wall and service aisle, kiln wall comprises the body of wall plateau for being fixed on ground, body of wall plateau adopts rubble brick body to be built into, and described body of wall plateau is provided with the padded layer adopting concreting, padded layer is provided with the first body of wall layer set gradually from the inside to the outside, second cavity layer, cavity insulating and the 3rd body of wall layer, described first body of wall layer adopts concreting to form, second cavity layer adopts light fire brick to be built into, 3rd body of wall layer adopts brick body to be built into, supporting layer is provided with between described second cavity layer and padded layer, described supporting layer adopts brick body to be built into, the separation layer adopting refractory brick to form is provided with between supporting layer and the 3rd body of wall layer, the articulamentum adopting concreting is provided with between first body of wall layer and supporting layer, the medial surface 30mm-60mm of the medial surface distance first body of wall layer of articulamentum, the medial surface 80mm-120mm of the medial surface distance supporting layer of articulamentum, the track structure travelled for kiln car is provided with in service aisle, described track structure comprises track plateau and track installation layer, described track plateau adopts rubble brick body to be built into, the width of track plateau is 500mm-900mm, track installation layer adopts concreting to form, be embedded with U bolt in track installation layer, be provided with track between the two ends of U bolt, described track is fixed on U bolt by pressure strip, padded layer is provided with the sand sealing groove structure for sealing kiln car bottom space by service aisle side, described sand sealing groove comprises the angle steel be embedded in padded layer, angle steel is 20 °-70 ° and is obliquely installed, angle steel is welded with dowel by service aisle side, the top of dowel is fixed with sand sealing groove angle steel, the cross section of described sand sealing groove angle steel is L-shaped, the side of described dowel is welded with reinforcement steel plate, described sand sealing groove angle steel is fitted in be strengthened steel plate and is bolted sand sealing groove angle steel and strengthens steel plate, the appearance sand launder for holding sealing sand is formed between sand sealing groove angle steel and padded layer, kiln top comprises kiln lamina tecti, the below of kiln lamina tecti is fixed with elevator, the lower end of elevator connects kiln top insulating, the two ends up and down of elevator are provided with inserting groove, preheating section is provided with kiln top insulating, the below of kiln top insulating is provided with the support boatswain chair for kiln top insulating, and described boatswain chair is connected on elevator by steel wire rope.
2. gangue tunnel cave preheating section structure according to claim 1, it is characterized in that: preheating section vibrational power flow has throwing sandpipe, the padded layer of inducer is provided with adopt light fire brick be built into the 4th before body of wall layer, body of wall layer before described throwing sandpipe oblique cutting enters the 4th, the inside and outside two ends of throwing sandpipe pass from both sides inside and outside body of wall layer before the 4th respectively, throwing sandpipe is 20 °-70 ° and is obliquely installed, and the outer end of throwing sandpipe is provided with the throwing sandpipe cover plate being hinged on and throwing on sandpipe.
3. gangue tunnel cave preheating section structure according to claim 1, it is characterized in that: preheating section vibrational power flow has fume extractor, fume extractor comprises multiple first tube connectors be arranged on above kiln lamina tecti, the two ends of described first tube connector are communicated with the second tube connector respectively, two the second tube connectors penetrate kiln wall from the both sides of preheating section structure respectively and are communicated in service aisle, the below of described first tube connector is communicated with multiple the 3rd tube connector that is set in distance, described 3rd tube connector is in vertically arranging and penetrate kiln top to be communicated in service aisle, realize being communicated with by the 4th tube connector between first tube connector, 4th tube connector access smoking blower fan, be provided with every hollow plate between adjacent orbit mounting layer in the service aisle of preheating section structure, describedly adopt pea gravel concreten to be built into every empty version, be arranged on above the space between adjacent orbit mounting layer every empty version.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276883.9U CN204757658U (en) | 2015-04-29 | 2015-04-29 | Gangue tunnel cave preheating section structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520276883.9U CN204757658U (en) | 2015-04-29 | 2015-04-29 | Gangue tunnel cave preheating section structure |
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| CN204757658U true CN204757658U (en) | 2015-11-11 |
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| CN201520276883.9U Expired - Fee Related CN204757658U (en) | 2015-04-29 | 2015-04-29 | Gangue tunnel cave preheating section structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792162A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Coal gangue tunnel kiln preheating section structure |
-
2015
- 2015-04-29 CN CN201520276883.9U patent/CN204757658U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792162A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Coal gangue tunnel kiln preheating section structure |
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Granted publication date: 20151111 Termination date: 20160429 |