CN109402385B - Sintering furnace and feeding and igniting assembly thereof - Google Patents
Sintering furnace and feeding and igniting assembly thereof Download PDFInfo
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- CN109402385B CN109402385B CN201811648003.0A CN201811648003A CN109402385B CN 109402385 B CN109402385 B CN 109402385B CN 201811648003 A CN201811648003 A CN 201811648003A CN 109402385 B CN109402385 B CN 109402385B
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- feeding
- feeding device
- sintering furnace
- feed
- channel
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- 238000005245 sintering Methods 0.000 title claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims description 38
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 230000004888 barrier function Effects 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 9
- 239000002956 ash Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 15
- 239000010802 sludge Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000002356 single layer Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a sintering furnace and a feeding and igniting assembly thereof, which comprises a feeding device and an igniting device. When raw materials are added into the feeding device, the first raw materials are sent to a first blanking area of a feeding device of the sintering furnace through a first feeding channel of the feeding device, and in the process that the feeding device sends the first raw materials from the first blanking area to a second blanking area, the first raw material layer is ignited by an ignition device; when the feeding device sends the first raw material to the second blanking area, the second raw material is sent to the second blanking area of the feeding device through the second feeding channel, and the second raw material layer is covered on the burnt first raw material layer for sintering. The mode of the multi-layer cloth can enable the fuel to burn more fully and improve the energy utilization efficiency.
Description
Technical Field
The invention relates to the technical field of sintering furnaces, in particular to a sintering furnace and a feeding and igniting assembly thereof.
Background
The high-temperature sintering of the sludge after the filter pressing dehydration is a front-stage process for recovering metals in the sludge smelting. At present, the sludge is sintered at high temperature by a traditional kiln in a single-layer material distribution mode, namely, fuel and sludge are mixed and then added into the kiln, and wood is required to be ignited firstly during ignition, and then the wood is used for igniting raw materials. However, the single-layer distribution mode affects the combustion of raw materials, and the raw materials are not fully combusted, so that the energy utilization rate is low, and the energy consumption is increased.
Disclosure of Invention
Based on this, it is necessary to provide a sintering furnace and feeding and ignition assembly thereof, so as to solve the problems that the combustion of raw materials is affected by adopting a single-layer material distribution mode in the traditional kiln, the raw materials are not fully combusted, the energy utilization efficiency is low, and the energy consumption is increased.
A feeding and igniting assembly of a sintering furnace, which comprises a feeding device and an igniting device; the feeding device is provided with a first feeding channel and a second feeding channel, the first feeding channel is used for feeding a first raw material to a first blanking area of a feeding device of the sintering furnace, the second feeding channel is used for feeding a second raw material to a second blanking area of the feeding device, and the first blanking area is located upstream of the second blanking area in the conveying direction of the feeding device; the ignition device is connected to the feeding device and is used for being arranged between the first blanking area and the second blanking area, and the ignition device is used for igniting the first raw material.
In one embodiment, the opening size of the first feed channel is gradually reduced in the feed direction; and/or
The opening size of the second feed channel gradually decreases in the feed direction.
In one embodiment, the feeding device comprises a feeding barrel and a blocking mechanism, wherein two sides of the blocking mechanism are respectively connected to the inner wall of the feeding barrel to form the first feeding channel and the second feeding channel.
In one embodiment, the baffle mechanism increases in size gradually along the feed direction of the feed cylinder.
In one embodiment, the ignition device includes an igniter coupled to the barrier mechanism.
In one embodiment, the igniter is disposed on an end of the barrier mechanism remote from the feed port of the feed cylinder.
In one embodiment, the ignition device further comprises a combustion tank connected with the barrier mechanism and having a notch facing away from the barrier mechanism, and the igniter is disposed in the combustion tank.
In one embodiment, the ignition device further comprises an air extraction mechanism for extracting air from the combustion bowl.
In one embodiment, the air extraction mechanism is disposed opposite the slot opening of the combustion tank, and the air extraction mechanism is configured to extract air toward the slot opening of the combustion tank.
The sintering furnace comprises a furnace body, a feeding device and the feeding and ignition assembly of any embodiment, wherein the feeding device is arranged in a hearth of the furnace body, and the feeding and ignition assembly is arranged on the furnace body.
Compared with the prior art, the invention has the following beneficial effects:
When the raw materials are added into the feeding device, the first raw materials are sent to a first blanking area of a feeding device of the sintering furnace through a first feeding channel of the feeding device, and the feeding device is used for igniting a first raw material layer in the process of conveying the first raw materials from the first blanking area to a second blanking area; when the feeding device sends the first raw material to the second blanking area, the second raw material is sent to the second blanking area of the feeding device through the second feeding channel, and the second raw material layer is covered on the burnt first raw material layer for sintering. The mode of the multi-layer cloth can enable the fuel to burn more fully and improve the energy utilization efficiency.
Drawings
FIG. 1 is a schematic view of a feeding and ignition assembly of a sintering furnace according to an embodiment;
FIG. 2 is a schematic view of a first discharge height adjustment mechanism in a feed and pilot assembly according to one embodiment;
fig. 3 is a schematic view of a sintering furnace including the feed and pilot assembly of fig. 1.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the feed and pilot assembly 100 of the present invention is applied to raw material feed and pilot of a sintering furnace. The feed and pilot assembly 100 of an embodiment includes a feed device 110 and a pilot device 120. The feeding device 110 has a first feeding channel 111 and a second feeding channel 112, wherein the first feeding channel 111 is used for feeding a first raw material 310 onto a first blanking area 210 of a feeding device 200 of the sintering furnace, and the second feeding channel 112 is used for feeding a second raw material 320 onto a second blanking area 220 of the feeding device 200. The first blanking zone 210 is located upstream of the second blanking zone 220 in the conveying direction of the feeding device 200. The ignition device 120 is connected to the feeding device 110 and is configured to be disposed between the first blanking area and the second blanking area 220, and the ignition device 120 is configured to ignite the first raw material 310.
When the raw material is fed into the feeding device 110, the first feeding channel 111 of the feeding device 110 feeds the first raw material 310 onto the first blanking zone 210 of the feeding device 200 of the sintering furnace. As the feeding device 200 moves, the first raw material 310 spreads out on the feeding device 200 to form a material layer. During the process of the feeding device 200 delivering the first raw material 310 from the first blanking area 210 to the second blanking area 220, the ignition device 120 will ignite the first raw material 310 layer. The first raw material 310 is burned as a whole, and can be burned more sufficiently. When the feeding device 200 feeds the first raw material 310 to the second blanking zone 220, the second feed channel 112 feeds the second raw material 320 onto the second blanking zone 220 of the feeding device 200, so that a layer of the second raw material 320 is laid over a layer of the burnt first raw material 310 for sintering.
When the traditional sintering kiln ignites, the wood is required to be ignited first, then the wood is used for igniting raw materials, the operation is complex, the ignition efficiency is low, and the operation is not easy. The feeding and igniting assembly 100 of the present embodiment ignites the first raw material layer (fuel layer) by the igniting device 120, which improves the ignition efficiency, and is simple and easy to operate.
Alternatively, the feeding device 110 may have not only the first feeding passage 111 and the second feeding passage 112 but also a third feeding passage, a fourth feeding passage, and so on. Each feed channel is used to deliver multiple raw materials to different blanking areas of the feeding device 200, so that multiple raw material layers can be formed on the feeding device 200.
In one example, the opening size of the first feed channel 111 gradually decreases in the feed direction. Thus, the feed inlet of the first feed channel 111 can be designed larger, feeding is facilitated, the discharge outlet of the first feed channel 111 is smaller, and the furnace body structure is more compact. In one example, the opening size of the second feed channel 112 gradually decreases in the feed direction.
In one example, the outlet end of the first feed channel 111 is lower than the outlet end of the second feed channel 112, i.e. the outlet end of the second feed channel 112 is further away from the feeding device 200 than the outlet end of the first feed channel 111.
In the specific example shown in fig. 1, the feeding device 110 includes a feeding cylinder 113 and a blocking mechanism 114, and both sides of the blocking mechanism 114 are respectively connected to an inner wall of the feeding cylinder 113 to form a first feeding passage 111 and a second feeding passage 112.
As shown in fig. 1, in one example, the size of the barrier mechanism 114 gradually increases along the feeding direction of the feeding cylinder 113, so that the first feeding passage 111 and the second feeding passage 112 are away from each other along the feeding direction of the feeding cylinder 113, providing a space for spreading the first raw material 310 on the feeding device 200.
As shown in fig. 1, in one example, the ignition device 120 includes an igniter 121, the igniter 121 being coupled to the barrier mechanism 114. Alternatively, igniter 121 may be selected from, but not limited to, a burner.
In the particular example shown in fig. 1, the igniter 121 is disposed on an end of the barrier mechanism 114 remote from the feed port of the feed cylinder 113. In this example, the igniter 121 can be oriented downward, igniting the first feedstock 310 bed below the igniter 121.
Further, in the specific example shown in fig. 1, the ignition device 120 further includes a combustion groove 122, the combustion groove 122 is connected with the barrier mechanism 114, and a notch of the combustion groove 122 faces away from the barrier mechanism 114, and the igniter 121 is disposed in the combustion groove 122. In this example, the combustion bowl 122 is designed to provide space for the ignition operation of the igniter 121.
As shown in FIG. 1, in one example, pilot device 120 further includes an extraction mechanism 123, where extraction mechanism 123 is configured to extract gas from combustion bowl 122 to extract combustion exhaust from combustion bowl 122. The pumping mechanism 123 may be, but is not limited to, a bellows or the like.
In the specific example shown in fig. 1, the gas extraction mechanism 123 is disposed opposite the notch of the combustion tank 122, and the gas extraction mechanism 123 is configured to extract gas toward the notch of the combustion tank 122.
As shown in fig. 2, in one example, the feeding device 110 further includes a first discharge height adjusting mechanism 180, where the first discharge height adjusting mechanism 180 has a first adjusting baffle 181, the first adjusting baffle 181 passes through the furnace body 410 and is disposed near the second feeding channel 112 of the feeding barrel 113, the first adjusting baffle 181 is movably connected to an outer wall of the sintering furnace body, and the first adjusting baffle 181 can move up and down relative to the feeding barrel 113 to adjust a length of the first adjusting baffle 181 extending out of the discharge end of the second feeding channel 112. By providing the first discharge height adjusting mechanism 180, the first adjusting baffle 181 can be adjusted to rise or fall as needed, thereby enabling adjustment of the thickness of the cloth of the second raw material 320 on the feeding device 200.
Further, in one example, the first discharging height adjusting mechanism 180 further includes a fixing member 182 and a connecting rod 183, the fixing member 182 is configured to be disposed on an outer wall of the furnace body, a threaded hole is formed in the fixing member 182, the connecting rod 183 is in threaded connection with the threaded hole, and the screw is connected with the first adjusting baffle 181. In this example, the relative position between the adjusting connecting rod 183 and the fixing member 182, that is, the relative position between the adjusting connecting rod 183 and the furnace body, can drive the first adjusting baffle 181 to rise or fall.
Further, as shown in fig. 3, the present invention further provides a sintering furnace 400, which includes a furnace body 410, a feeding device 200, and a feeding and igniting assembly 100 of any of the foregoing examples, wherein the feeding device 200 is disposed in a furnace chamber of the furnace body 410, and the feeding and igniting assembly 100 is disposed on the furnace body 410.
In one example, the feeding device 200 is a conveyor belt, and the conveyor belt is provided with a vent hole, which may be a round hole, a strip-shaped hole, or other shape. In this example, the air extraction mechanism 123 is disposed between the upper and lower opposed strips of the feed device 200, and extracts the combustion exhaust toward the notch of the combustion bowl 122.
As shown in fig. 3, in one example, the sintering furnace 400 further includes a plurality of air blowing devices 420 and ash discharge grooves 430, the plurality of air blowing devices 420 being disposed between the upper and lower opposite strips of the feeding device 200 and being arranged in the conveying direction of the feeding device 200, the air blowing devices 420 being configured to blow air toward the material on the feeding device 200 to blow the combustion ashes into the ash discharge grooves 430 under the air blowing devices 420.
When the sintering furnace 400 and the feeding and igniting assembly 100 are used for feeding raw materials into the feeding device 110, the first feeding channel 111 of the feeding device 110 sends the first raw materials 310 to the first blanking area 210 of the feeding device 200 of the sintering furnace, and the igniting device 120 ignites the first raw materials 310 layer in the process that the feeding device 200 sends the first raw materials 310 from the first blanking area 210 to the second blanking area 220; when the feeding device 200 feeds the first raw material 310 to the second blanking zone 220, the second feed channel 112 feeds the second raw material 320 onto the second blanking zone 220 of the feeding device 200, so that a layer of the second raw material 320 is laid over a layer of the burnt first raw material 310 for sintering. The mode of the multi-layer cloth can enable the fuel to burn more fully and improve the energy utilization efficiency.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in 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 (10)
1. The sintering furnace is characterized by comprising a furnace body, a feeding device and a feeding and igniting assembly, wherein the feeding device is arranged in a hearth of the furnace body, and the feeding and igniting assembly is arranged on the furnace body;
The feeding and igniting assembly of the sintering furnace comprises a feeding device and an igniting device; the feeding device is provided with a first feeding channel and a second feeding channel, the first feeding channel is used for feeding a first raw material to a first blanking area of a feeding device of the sintering furnace, the second feeding channel is used for feeding a second raw material to a second blanking area of the feeding device, and the first blanking area is located upstream of the second blanking area in the conveying direction of the feeding device; the ignition device is connected with the feeding device and is used for being arranged between the first blanking area and the second blanking area, and the ignition device is used for igniting the first raw material;
The sintering furnace further comprises a plurality of air blowing devices and ash discharging grooves, the air blowing devices are arranged between the upper strips and the lower strips of the feeding device and are arranged along the conveying direction of the feeding device, and the air blowing devices are used for blowing air towards materials on the feeding device so as to blow combustion ashes down into the ash discharging grooves below the air blowing devices.
2. The sintering furnace according to claim 1, wherein the opening size of the first feed channel is gradually reduced in the feed direction; and/or
The opening size of the second feed channel gradually decreases in the feed direction.
3. The sintering furnace according to claim 1 or 2, wherein the feeding device comprises a feeding cylinder and a blocking mechanism, and both sides of the blocking mechanism are respectively connected to the inner wall of the feeding cylinder to form the first feeding channel and the second feeding channel.
4. A sintering furnace according to claim 3, wherein the barrier means increases in size gradually in the feed direction of the feed cylinder.
5. A sintering furnace according to claim 3 wherein the ignition means comprises an igniter connected to the barrier mechanism.
6. The sintering furnace of claim 5, wherein the igniter is disposed on an end of the barrier mechanism remote from the feed port of the feed cylinder.
7. The sintering furnace of claim 6, wherein the ignition device further comprises a combustion bowl, the combustion bowl is connected with the barrier mechanism and a notch of the combustion bowl faces away from the barrier mechanism, and the igniter is disposed in the combustion bowl.
8. The sintering furnace of claim 7, wherein the ignition device further comprises an extraction mechanism for extracting gas from the combustion bowl.
9. The sintering furnace according to claim 8, wherein the gas extraction mechanism is disposed opposite to the notch of the combustion tank, and the gas extraction mechanism is configured to extract gas toward the notch of the combustion tank.
10. The sintering furnace of claim 1, wherein the feeder further comprises a first discharge height adjustment mechanism having a first adjustment baffle disposed through the furnace body and adjacent to the second feed channel, the first adjustment baffle movably connected to an outer wall of the furnace body of the sintering furnace, the first adjustment baffle being movable up and down relative to the feed cylinder to adjust a length of the first adjustment baffle extending out of a discharge end of the second feed channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648003.0A CN109402385B (en) | 2018-12-29 | 2018-12-29 | Sintering furnace and feeding and igniting assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648003.0A CN109402385B (en) | 2018-12-29 | 2018-12-29 | Sintering furnace and feeding and igniting assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109402385A CN109402385A (en) | 2019-03-01 |
| CN109402385B true CN109402385B (en) | 2024-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811648003.0A Active CN109402385B (en) | 2018-12-29 | 2018-12-29 | Sintering furnace and feeding and igniting assembly thereof |
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| Country | Link |
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| CN (1) | CN109402385B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU998546A1 (en) * | 1980-09-19 | 1983-02-23 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Device for controlling speed of sintering belt |
| CN2928843Y (en) * | 2006-07-20 | 2007-08-01 | 安徽晶鑫信息技术工程有限公司 | Automatic distributing device for lime vertical kiln top |
| CN102967146A (en) * | 2012-10-31 | 2013-03-13 | 李观升 | Ultralow windage penetrating hole distributing device for raw materials before ignition of iron-making sintering machine |
| CN204138687U (en) * | 2014-08-12 | 2015-02-04 | 英德市新裕有色金属再生资源制品有限公司 | A kind of blast-furnace distributor |
| CN108895837A (en) * | 2018-03-23 | 2018-11-27 | 武汉钢铁有限公司 | Low NO based on the igniting of double-layer cloth bilayerxSintering system |
| CN209508360U (en) * | 2018-12-29 | 2019-10-18 | 广州薪光合环保技术有限公司 | Sintering furnace and its charging and the component that ignites |
-
2018
- 2018-12-29 CN CN201811648003.0A patent/CN109402385B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU998546A1 (en) * | 1980-09-19 | 1983-02-23 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Device for controlling speed of sintering belt |
| CN2928843Y (en) * | 2006-07-20 | 2007-08-01 | 安徽晶鑫信息技术工程有限公司 | Automatic distributing device for lime vertical kiln top |
| CN102967146A (en) * | 2012-10-31 | 2013-03-13 | 李观升 | Ultralow windage penetrating hole distributing device for raw materials before ignition of iron-making sintering machine |
| CN204138687U (en) * | 2014-08-12 | 2015-02-04 | 英德市新裕有色金属再生资源制品有限公司 | A kind of blast-furnace distributor |
| CN108895837A (en) * | 2018-03-23 | 2018-11-27 | 武汉钢铁有限公司 | Low NO based on the igniting of double-layer cloth bilayerxSintering system |
| CN209508360U (en) * | 2018-12-29 | 2019-10-18 | 广州薪光合环保技术有限公司 | Sintering furnace and its charging and the component that ignites |
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| CN109402385A (en) | 2019-03-01 |
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