CN113215393A - Sintering mixture preheating and drying ignition device and using method thereof - Google Patents
Sintering mixture preheating and drying ignition device and using method thereof Download PDFInfo
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- CN113215393A CN113215393A CN202110703085.XA CN202110703085A CN113215393A CN 113215393 A CN113215393 A CN 113215393A CN 202110703085 A CN202110703085 A CN 202110703085A CN 113215393 A CN113215393 A CN 113215393A
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- 238000005245 sintering Methods 0.000 title claims abstract description 197
- 238000001035 drying Methods 0.000 title claims abstract description 72
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- 239000000571 coke Substances 0.000 description 2
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- 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
- C22B1/22—Sintering; Agglomerating in other sintering apparatus
Abstract
The invention discloses a sintering mixture preheating, drying and igniting device which comprises a sintering preheating and drying furnace and a sintering ignition furnace, wherein the sintering preheating and drying furnace is used for preheating and drying sintering mixtures on a sintering trolley, the sintering ignition furnace is used for igniting the sintering mixtures on the sintering trolley, and the sintering preheating and drying furnace and the sintering ignition furnace are sequentially arranged along the running direction of the sintering trolley. The ignition device for preheating and drying the sintering mixture enables the sintering mixture to be preheated and dried before ignition, the temperature of the sintering mixture is obviously improved, and when the ignition device is ignited by a sintering ignition furnace, low-temperature ignition control can be realized, so that the ignition process requirement of normal sintering production can be met, and the gas consumption of the ignition device is obviously reduced compared with that of a traditional ignition holding furnace. The invention also discloses a use method of the sintering mixture preheating, drying and igniting device.
Description
Technical Field
The invention belongs to the technical field of metallurgical sintering equipment, and particularly relates to a preheating, drying and igniting device for a sintering mixture and a using method thereof.
Background
In the sintering process, the ignition furnace is used for providing high-temperature banded flame to the surface of the mixture on the trolley, so that solid fuel in the mixture is ignited and combusted, the mixture on the surface layer is sintered into ore under the combined action of high-temperature flue gas of the ignition furnace and the combustion and heat release of the solid fuel, and meanwhile, sufficient oxygen and negative pressure are provided through air draft of the exhaust fan to transfer heat accumulated on the surface layer to the mixture on the next layer, so that the solid fuel on the next layer is continuously combusted, the sintering process is gradually carried out downwards along with the operation of the sintering machine, and the sintering process is further completed.
The existing sintering ignition furnace is mature in technical development and generally comprises an ignition section and a heat preservation section, a refractory brick wall or a flexible partition is arranged between the ignition section and the heat preservation section, so that mutually independent spaces are formed between the ignition section and the heat preservation section, high-temperature hot flue gas of the ignition section is prevented from flowing to the heat preservation section, and unnecessary consumption of coal gas is reduced. And the ignition device used by the sintering machine is mostly an igniter with a plurality of rows (two rows and three rows) of burners, and the ignition fuel and the air flow of each row of ignition burners of the igniter are the same, namely the ignition intensity of each sintered material is the same. The ignition of the first row of ignition burners is to ignite the solid fuel in the sintering material, then air is sucked in through the air suction effect of the air suction system, and the solid fuel is combusted, so that the sintering process can be carried out downwards; the other rows of ignition burners have the functions of supplementing ignition on one hand, providing heat for a sintering charge level on the other hand, improving the temperature of a sintering charge in an upper sintering area, improving the quality of sintered ore on the upper part of the sintering machine and providing heat.
In the prior art, the sintering mostly adopts the process of igniting a sintering mixture and arranging a certain heat preservation section after finishing ignition, the gas consumption is large, the thermal state air permeability in the sintering process is poor, and the microstructure of a sintering ore is unreasonable.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a preheating, drying and igniting device for a sintering mixture, and aims to reduce the gas consumption.
In order to achieve the purpose, the invention adopts the technical scheme that: the sintering mixture preheating and drying ignition device comprises a sintering preheating drying furnace and a sintering ignition furnace, wherein the sintering preheating drying furnace is used for preheating and drying the sintering mixture on a sintering trolley, the sintering ignition furnace is used for igniting the sintering mixture on the sintering trolley, and the sintering preheating drying furnace and the sintering ignition furnace are sequentially arranged along the running direction of the sintering trolley.
The sintering preheating drying furnace comprises a first furnace body, a preheating air channel, a preheating burner, a first gas pipeline and a first air pipeline, wherein the preheating air channel is used for providing hot air into a hearth of the first furnace body, the preheating burner is used for providing hot air into the hearth of the first furnace body, the first gas pipeline and the first air pipeline are connected with the preheating burner, and the preheating air channel and the preheating burner are arranged on the first furnace body.
The temperature of the preheating drying air in the hearth of the first furnace body is set within the range of 350-450 ℃.
The preheating burner is characterized in that the preheating air channels are arranged in a plurality, and the preheating burner is also arranged in a plurality.
The hot air in the first air pipeline and the preheating air channel is from the hot waste gas in the middle-high temperature region of the sintering circular cooler or the belt cooler, and the temperature of the hot air in the first air pipeline and the preheating air channel is in the range of 350-450 ℃.
The preheating burner is a curtain type burner and a short flame type burner.
The sintering ignition furnace comprises a second furnace body, an ignition burner, a second gas pipeline, a second air pipeline and a third air pipeline, wherein the ignition burner is used for providing hot air into a hearth of the second furnace body, the second gas pipeline, the second air pipeline and the third air pipeline are connected with the ignition burner, and the ignition burner is arranged on the second furnace body.
The hot air in the second air pipeline and the third air pipeline is from the hot waste gas in the middle-high temperature region of the sintering circular cooler or the belt cooler, and the temperature of the hot air in the second air pipeline and the third air pipeline is in the range of 350-450 ℃.
And a sintering air draft bellows is arranged below the sintering preheating drying furnace and the sintering ignition furnace.
The invention also provides a use method of the ignition device for preheating, drying and firing the sintering mixture, which comprises the following steps:
s1, preheating and drying the sintering mixture on the sintering trolley by a sintering preheating and drying furnace;
and S2, igniting the sintering mixture on the sintering trolley by a sintering ignition furnace.
The ignition device for preheating and drying the sintering mixture enables the sintering mixture to be preheated and dried before ignition, the temperature of the sintering mixture is obviously improved, and when the ignition device is ignited by a sintering ignition furnace, low-temperature ignition control can be realized, so that the ignition process requirement of normal sintering production can be met, and the gas consumption of the ignition device is obviously reduced compared with that of a traditional ignition holding furnace.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic diagram of a sinter mix preheat dry ignition device according to the present invention;
labeled as: 1. sintering, preheating and drying furnace; 2. sintering an ignition furnace; 3. a first leg; 4. a first gas conduit; 5. a first air duct; 6. a second air duct; 7. preheating a burner; 8. prefabricating a beam; 9. an ignition hole; 10. a preheated air channel; 11. igniting the burner; 12. a caster wheel; 13. sintering the upper edge of the trolley; 14. sintering air draft bellows; 15. a third air duct; 16. a second gas conduit; 17. a second leg.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solution of the present invention and to facilitate its implementation.
It should be noted that, in the following embodiments, the terms "first", "second" and "third" do not denote absolute differences in structure and/or function, nor do they denote a sequential order of execution, but rather are used for convenience of description.
As shown in fig. 1, the invention provides a sintering mixture preheating and drying ignition device, which comprises a sintering preheating and drying furnace 1 for preheating and drying a sintering mixture on a sintering pallet and a sintering ignition furnace 2 for igniting the sintering mixture on the sintering pallet after preheating and drying, wherein the sintering preheating and drying furnace 1 and the sintering ignition furnace 2 are sequentially arranged along the running direction of the sintering pallet. Preheating, drying and normal ignition of the sintering mixture are realized through the sintering preheating and drying furnace 1 and the sintering ignition furnace 2, and the medium-high temperature area hot waste gas generated by a sintering circular cooler or a belt cooler in the sintering production process can be utilized for preheating, drying and ignition of the sintering mixture; the preheating drying furnace can realize an automatic afterburning technology so as to achieve the stability and uniformity of preheating and drying of the sintering mixture; and on the basis, the low-temperature ignition control of the sintering ignition furnace 2 is realized. The sintering mixture is preheated and dried, the temperature of the material layer is gradually increased, the water in the material layer is evaporated into steam, the heat transfer speed of the sintering material layer is increased, the width of the over-wet belt is reduced, the improvement of thermal state air permeability in the sintering process is facilitated, and the vertical sintering speed and the utilization coefficient are improved; meanwhile, the improvement of thermal state air permeability strengthens the oxidizing atmosphere in the sintering process, and is beneficial to the generation of high-quality calcium ferrite binding phase, thereby improving the quality of sintered ore; and the cooling speed is relatively reduced, the generation of amorphous structure glass is reduced, the microstructure of the sintered ore is more reasonable, the sintered ore forming condition is improved, the silicate and ferrite bonded phase is more sufficiently crystallized, more bonded phases with higher strength are formed, the strength of the sintered ore is increased, and the yield is increased.
Because the sintering mixture is preheated and dried in advance, the temperature of the sintering mixture is obviously increased, and when the sintering ignition furnace 2 is used for ignition, low-temperature ignition control can be realized, namely the requirement of the normal ignition process of sintering production can be met, so that the gas consumption of the device is obviously reduced compared with that of the traditional ignition holding furnace.
Specifically, as shown in fig. 1, the sintering preheating drying furnace 1 includes a first furnace body, a preheating air passage 10 for supplying hot air into a hearth of the first furnace body, a preheating burner 7 for supplying hot air into the hearth of the first furnace body, and a first gas pipe 4 and a first air pipe 5 connected to the preheating burner 7, wherein the preheating air passage 10 and the preheating burner 7 are disposed on the first furnace body. The furnace roof of first furnace body adopts 8 structural style of precast beam, preheat nozzle 7 and preheat air passageway 10 fixed mounting on the furnace roof of first furnace body, first furnace body is located the top of sintering platform truck, preheat nozzle 7 and preheat air passageway 10 and be vertical setting, preheat air passageway 10 and set up a plurality ofly, preheat nozzle 7 and also set up a plurality ofly, preheat nozzle 7 and be located between two adjacent preheat air passageway 10, all preheat nozzle 7 and preheat air passageway 10 and arrange in proper order for setting for the direction along setting for, this setting for the horizontal direction that parallels for the traffic direction with the sintering platform truck.
As shown in fig. 1, a sintering draft wind box 14 is provided below the sintering preheat drying furnace 1. The sintering preheating drying furnace 1 further comprises a first supporting leg 3 connected with the first furnace body and a caster 12 rotatably arranged on the first supporting leg 3, the first supporting leg 3 is vertically arranged, the first supporting leg 3 is provided with a plurality of supporting legs, the upper end of the first supporting leg 3 is fixedly connected with the first furnace body, and the caster 12 is arranged at the lower end of the first supporting leg 3. The first supporting legs 3 are of steel structures, all the first supporting legs 3 are arranged in two rows, the first furnace body is supported on the trundles 12 on the two sides through the first supporting legs 3 of the steel structures and is spanned above the sintering trolley, and the length and the installation position of the first furnace body are 1 of the sintering air draft bellows 14#And 2#The air boxes correspond to each other, and correspond to 1 in normal use#And 2#The butterfly valve opening of the sintering air box is set within the range of 45-95%.
Sintering convulsions bellows 14 has been arranged to the below of first furnace body, and sintering convulsions bellows 14 has exhaust fan, and sintering convulsions bellows 14 is used for providing suction. Under the suction effect of the exhaust fan, hot air entering the hearth of the first furnace body forms preheating dry air blown downwards to the sintering mixture on the sintering trolley, and the preheating dry air downwards passes through a mixture material layer of the sintering trolley, so that the preheating and drying effects on the sintering mixture are realized.
In this embodiment, as shown in FIG. 1, the distance between the height of the furnace chamber of the first furnace body and the upper edge of the sintering trolley is 600-.
As shown in FIG. 1, the length of the preheating air channel 10 is equal to the width of the sintering pallet, the length direction of the preheating air channel 10 is parallel to the width direction of the sintering pallet, the length direction of the first furnace body is parallel to the length direction of the sintering pallet, and all the preheating air channels 10 are sequentially arranged along the length direction of the first furnace body. All the preheating burners 7 are arranged in two rows, all the preheating burners 7 in the same row are positioned between two adjacent preheating air channels 10, all the preheating burners 7 in the same row are positioned on the same straight line parallel to the length direction of the preheating air channels 10, and the number of the preheating burners 7 in each row is set according to the width of the sintering trolley and the requirement of heat compensation. The first gas pipeline 4 and the first air pipeline 5 are connected with the preheating burner nozzle 7, the first gas pipeline 4 is used for conveying gas into the preheating burner nozzle 7, and the gas can be coke oven gas, blast furnace gas, converter gas or other types of gas. The first air pipeline 5 is used for conveying hot air into the preheating burner 7, the hot air in the first air pipeline 5 and the preheating air channel 10 is from hot waste gas in a middle-high temperature region of the sintering circular cooler or the belt cooler, and the temperature of the hot air in the first air pipeline 5 and the preheating air channel 10 is in the range of 350-450 ℃.
In the present embodiment, as shown in fig. 1, the preheat burners 7 are arranged in two rows, and the preheat burners 7 are curtain burners. The first air pipeline 5 is a primary air pipeline, and because the temperature of the hot waste gas in the middle-high temperature region of the sintering circular cooler or the belt cooler is easy to fluctuate greatly in the sintering production process, the temperature of the preheated air entering each preheated air channel 10 of the preheating drying furnace and the temperature of the preheated air entering the first air pipeline 5 cannot be continuously ensured to be stably controlled within the reasonable temperature range of preheating and drying at 350-450 ℃, and the afterburning technology of two rows of preheating burners 7 is adopted, so that the temperature of the preheated and dried air entering the preheating drying furnace can meet the requirement of the temperature control range.
Preferably, a temperature measuring device is arranged in the first furnace body, the temperature measuring device comprises a temperature measuring element, the temperature measuring device is used for detecting the temperature of hot air in the furnace chamber, the temperature measuring element is a thermocouple, the temperature measuring elements are arranged in a plurality of numbers, and the temperature measuring elements are arranged at different positions. The temperature measuring elements and the preheating burners 7 are electrically connected with the control system, afterburning of the two rows of preheating burners 7 and the mean value of the detection temperatures of the temperature measuring elements are subjected to interlocking control, the temperature measuring devices transmit the detected temperature data to the control system, the control system controls the preheating burners 7 to work, and the temperature measuring devices take the detected temperature data as the mean value of the temperature values detected by all the temperature measuring elements. When the temperature data detected by the temperature measuring device is lower than 350 ℃, controlling the preheating burner 7 to be ignited, and performing afterburning on the preheating burner 7 to increase the temperature in the hearth; on the contrary, when the temperature data detected by the temperature measuring device is higher than 450 ℃, the gas flow and the hot air flow entering the preheating burner 7 are adjusted, so that the temperature data detected by the temperature measuring device is controlled within a set range; and if the gas and the corresponding air flow of the preheating burner nozzle 7 are automatically adjusted to a certain lowest safe flow, and the temperature detected by the temperature measuring device is still higher than the upper temperature control limit of 450 ℃, entering an automatic flameout and cut-off control mode of the preheating burner nozzle 7, and flameout the preheating burner nozzle 7.
In this embodiment, the preheating burner 7 is a short flame type burner, and the flame thereof does not ignite the sinter mix in the sintering pallet below the preheating burner at the hearth height of the preheating drying furnace.
At 400m2Sintering machine as an example 1#Wind box and 2#The length of the air box can be set to be 4.0 m; when the speed of the sintering normal production is 1.40m/min, the preheating and drying time of the sintering mixture in the preheating and drying furnace is about 5.71 min; the length of the preheating drying furnace and the length of the corresponding air draft air box can be reasonably designed in advance according to the normal sintering speed during production, so that the preheating and drying time of the sintering mixture in the preheating drying furnace is longer than 3 min.
Due to the preheating and drying of the sintering mixture, the temperature of the material layer is gradually increased, the water in the material layer is evaporated into steam, the heat transfer speed of the sintering material layer is increased, the width of the over-wet belt is reduced, the improvement of the thermal state air permeability in the sintering process is facilitated, and the vertical sintering speed and the utilization coefficient are improved; meanwhile, the improvement of thermal state air permeability strengthens the oxidizing atmosphere in the sintering process, and is beneficial to the generation of high-quality calcium ferrite binding phase, thereby improving the quality of sintered ore; meanwhile, the cooling speed is relatively reduced, the generation of amorphous structure glass is reduced, the microstructure of the sintered ore is more reasonable, the sintered ore forming condition is improved, the silicate and ferrite bonded phase is more sufficiently crystallized, more bonded phases with higher strength are formed, the strength of the sintered ore is increased, and the yield is increased.
The sintering ignition furnace 2 realizes ignition of the preheated and dried sintering mixture, and ignition control is dual-controlled according to ignition intensity and ignition temperature. As shown in fig. 1, the sintering ignition furnace 2 includes a second furnace body, an ignition burner 11 for providing hot air into a hearth of the second furnace body, and a second gas pipeline 16, a second air pipeline 6 and a third air pipeline 15 connected to the ignition burner 11, wherein the ignition burner 11 is disposed on the second furnace body. The furnace top of second furnace body adopts 8 structural style of precast beam, and ignition nozzle 11 fixed mounting is on the furnace top of second furnace body, and the second furnace body is located the top of sintering platform truck, and ignition nozzle 11 is vertical setting, and ignition nozzle 11 sets up a plurality ofly, and all ignition nozzles 11 are arranged for the length direction along the second furnace body in proper order, and the length direction of second furnace body parallels with the length direction of sintering platform truck.
As shown in fig. 1, a sintering draft wind box 14 is provided below the sintering ignition furnace 2. Sintering ignition furnace 2 still includes second landing leg 17 and the rotatable truckle 12 that sets up on second landing leg 17 of being connected with the second furnace body, and second landing leg 17 is vertical setting, and second landing leg 17 sets up a plurality ofly, the upper end and the second furnace body fixed connection of second landing leg 17, and truckle 12 sets up the lower extreme at second landing leg 17. The second supporting legs 17 are of a steel structure, all the second supporting legs 17 are arranged in two rows, the second furnace body bears on the casters 12 at two sides through the second supporting legs 17 of the steel structure and is spanned above the sintering trolley, and the length and the installation position of the second furnace body are equal to 3 of the sintering air draft bellows 14#And 4#The air boxes are corresponding, and the opening degrees of butterfly valves corresponding to the 3# and 4# sintering air boxes are set within the range of 5% -20% in normal use so as to meet the micro-negative pressure ignition control requirement of the sintering ignition furnace 2.
A sintering air draft bellows 14 is arranged below the second furnace body, the sintering air draft bellows 14 is provided with an air draft fan, and the sintering air draft bellows 14 is used for providing suction. Under the suction effect of the exhaust fan, hot air entering the hearth of the second furnace body is blown downwards to sinter mixture on the sintering trolley, and ignition of the sinter mixture is realized.
In this embodiment, as shown in FIG. 1, the distance between the height of the hearth of the second furnace body and the upper edge of the sintering trolley is 300-350 mm. The first furnace body and the second furnace body are arranged adjacently, the height of the hearth of the second furnace body is lower than that of the hearth of the first furnace body, the sintering ignition furnace 2 is in a normal working state, and radiation and convection heat transfer to the preheating drying furnace can be realized by one side, close to the preheating drying furnace, of the sintering ignition furnace 2, namely the sintering preheating drying furnace 1 can partially utilize the radiation and convection heat transfer of the sintering ignition furnace 2.
As shown in fig. 1, all the ignition burners 11 are arranged in two rows, all the ignition burners 11 in the same row are located on the same straight line parallel to the width direction of the sintering pallet, and the number of the ignition burners 11 in each row is set according to the width of the sintering pallet and the requirement of heat compensation. The second gas pipeline 16, the second air pipeline 6 and the third air pipeline 15 are connected with the ignition burner 11, the second gas pipeline 16 is used for conveying gas into the ignition burner 11, and the gas can be coke oven gas, blast furnace gas, converter gas or other types of gas. The second air pipeline 6 and the third air pipeline 15 are used for conveying hot air into the ignition burner 11, the second air pipeline 6 is a primary air pipeline, the third air pipeline 15 is a secondary air pipeline, the hot air in the second air pipeline 6, the third air pipeline 15 and the preheating air channel 10 comes from hot waste gas in a middle-high temperature region of the sintering annular cooler or the belt cooler, and the temperature of the hot air in the second air pipeline 6, the third air pipeline 15 and the preheating air channel 10 is in the range of 350-450 ℃.
Because the sintering mixture is preheated and dried in advance, the temperature of the sintering mixture is obviously improved, and the normal ignition temperature control of the sintering ignition furnace 2 can be properly reduced when the sintering ignition furnace 2 is ignited. When the preheating, drying and ignition device is used, the ignition temperature of the sintering ignition furnace 2 can be reduced from 1050 +/-50 ℃ to 850 +/-50 ℃, and the requirement of the normal sintering production ignition process can be met; due to the realization of the low-temperature ignition control, the gas consumption of the device is obviously reduced compared with that of the traditional ignition holding furnace.
The invention also provides a use method of the ignition device for preheating, drying and firing the sintering mixture, which comprises the following steps:
s1, preheating and drying the sintering mixture on the sintering trolley by the sintering preheating and drying furnace 1;
and S2, igniting the sintering mixture on the sintering trolley by the sintering ignition furnace 2.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (10)
1. The sintering mixture preheating, drying and igniting device is characterized by comprising a sintering preheating and drying furnace and a sintering ignition furnace, wherein the sintering preheating and drying furnace is used for preheating and drying the sintering mixture on a sintering trolley, the sintering ignition furnace is used for igniting the sintering mixture on the sintering trolley, and the sintering preheating and drying furnace and the sintering ignition furnace are sequentially arranged along the running direction of the sintering trolley.
2. The ignition device for preheating and drying sinter mixture as claimed in claim 1, wherein the sintering and preheating drying furnace includes a first furnace body, a preheating air passage for supplying hot air into a hearth of the first furnace body, a preheating burner for supplying hot air into the hearth of the first furnace body, and a first gas pipe and a first air pipe connected to the preheating burner, and the preheating air passage and the preheating burner are disposed on the first furnace body.
3. The ignition device for preheating and drying the sinter mixture as claimed in claim 2, wherein the temperature of the preheating drying air in the furnace chamber of the first furnace body is set within the range of 350-450 ℃.
4. The sinter mix preheating, drying and ignition device according to claim 2 or 3, wherein the number of the preheating air passages is plural, and the number of the preheating burners is plural.
5. The ignition device for preheating and drying sinter mix as claimed in claim 2 or 3, wherein the hot air in the first air duct and the preheating air channel is from the hot exhaust gas in the middle-high temperature region of the sintering ring cooler or the belt cooler, and the temperature of the hot air in the first air duct and the preheating air channel is in the range of 350-450 ℃.
6. The sinter mix preheat dry ignition device of claim 2 or claim 3, wherein the preheat burner is a curtain burner and a short flame type burner.
7. The sinter mix preheating, drying and igniting device according to any one of claims 1 to 6, wherein the sinter ignition furnace includes a second furnace body, an ignition burner for supplying hot air into a hearth of the second furnace body, and a second gas pipe, a second air pipe and a third air pipe connected to the ignition burner, and the ignition burner is disposed on the second furnace body.
8. The ignition device for preheating and drying sinter mix as claimed in claim 7, wherein the hot air in the second air duct and the third air duct is from the hot exhaust gas in the middle-high temperature region of the sintering ring cooler or the belt cooler, and the temperature of the hot air in the second air duct and the third air duct is in the range of 350 ℃ to 450 ℃.
9. The ignition device for preheating and drying the sinter mixture as claimed in any one of claims 1 to 8, wherein a sintering air draft bellows is provided below the sintering preheating drying furnace and the sintering ignition furnace.
10. The method of using a sinter mix preheat dry ignition device of any of claims 1 to 9, comprising the steps of:
s1, preheating and drying the sintering mixture on the sintering trolley by a sintering preheating and drying furnace;
and S2, igniting the sintering mixture on the sintering trolley by a sintering ignition furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703085.XA CN113215393A (en) | 2021-06-24 | 2021-06-24 | Sintering mixture preheating and drying ignition device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703085.XA CN113215393A (en) | 2021-06-24 | 2021-06-24 | Sintering mixture preheating and drying ignition device and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916003A (en) * | 2021-10-15 | 2022-01-11 | 马鞍山钢铁股份有限公司 | Sintering ignition temperature control system and method based on infrared imaging |
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| CN202973893U (en) * | 2012-12-19 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Ignition holding furnace for sintering of limonite |
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN107314677A (en) * | 2017-08-10 | 2017-11-03 | 武汉钢铁有限公司 | NOx abatement system based on dry pack igniting sintering |
| CN107504825A (en) * | 2017-08-10 | 2017-12-22 | 武汉钢铁有限公司 | The sintering process of low NOx generations |
| CN212058283U (en) * | 2020-04-28 | 2020-12-01 | 青岛圣鼎冶金设备有限公司 | Preheating ignition holding furnace for sintering production |
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| CN202973893U (en) * | 2012-12-19 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Ignition holding furnace for sintering of limonite |
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
| CN107314677A (en) * | 2017-08-10 | 2017-11-03 | 武汉钢铁有限公司 | NOx abatement system based on dry pack igniting sintering |
| CN107504825A (en) * | 2017-08-10 | 2017-12-22 | 武汉钢铁有限公司 | The sintering process of low NOx generations |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113916003A (en) * | 2021-10-15 | 2022-01-11 | 马鞍山钢铁股份有限公司 | Sintering ignition temperature control system and method based on infrared imaging |
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Application publication date: 20210806 |