CN103344114A - Novel energy-saving emission-reduction sintering machine system and sintering method - Google Patents
Novel energy-saving emission-reduction sintering machine system and sintering method Download PDFInfo
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- CN103344114A CN103344114A CN2013101677185A CN201310167718A CN103344114A CN 103344114 A CN103344114 A CN 103344114A CN 2013101677185 A CN2013101677185 A CN 2013101677185A CN 201310167718 A CN201310167718 A CN 201310167718A CN 103344114 A CN103344114 A CN 103344114A
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Abstract
The invention relates to a novel energy-saving emission-reduction sintering machine system and a sintering method. The novel energy-saving emission-reduction sintering machine system comprises a sintering machine room, wherein flue gas circulating systems are arranged on the two side faces of the sintering machine room, sintering flue gas generated by the sintering machine room is discharged through a flue after dedusting and desulfuration, sintered minerals in the sintering machine room are crushed, are cooled, and are screened in a finished product screening room I, a finished product screening room II and a finished product screening room III in sequence to obtain finished product broken particles, the finished product broken particles are conveyed to a finished product storage yard, broken particles which are not screened out in the finished product screening room III enter a burdening room, spraying is carried out minerals prepared in the burdening room through a urine solution spraying device, the minerals are mixed through a primary mixing room and a secondary mixing room in sequence, and the mixed minerals are evenly arranged in the sintering machine room through a mixed material distribution device to be sintered. The novel energy-saving emission-reduction sintering machine system and the sintering method make full use of waste heat, reduce energy consumption of the sintering technology, and remarkably reduce emission of organic pollutants such as NOx and dioxin.
Description
Technical field
The present invention relates to mineral sintering and agglomerating plant technical field, particularly a kind of novel energy-saving emission-reducing sintering machine system and sintering method.
Background technology
Sintering is the important procedure that integrated iron and steel works produce chain, and is along with the development of steel and iron industry, increasing to the required amount of iron ore.Yet, fewer and feweri directly into the rich ore of stove ironmaking, must a large amount of exploitations and use lean ore resource.Lean ore can make the blast furnace production target worsen directly into the stove smelting.Therefore, lean ore is handled by ore dressing and is obtained fine ore.The fine ore that concentrate and rich ore produce in exploitation and process needs could be used for blast furnace ironmaking after the agglomeration.And the effect of sintering machine is exactly the mineral agglomeration.Metallurgical performance through the mineral of sintering is greatly improved, and production brings huge economic benefit to blast furnace.Simultaneously, sintering process is very strong to the adaptability of raw material, not only can produce sintering deposit with granularity thicker rich ore powder and fine ore, can also handle industrial ferrous contained discarded object simultaneously.
The SO2 total emission volumn accounts for 11% of national total emission volumn in the steel manufacture process at present.Wherein the SO2 that effluxes of sintering circuit accounts for 85%.Sintering is as the source of the long flow process production process of iron and steel, and its energy consumption accounts for 10% of energy consumption per ton steel.By the sintering circuit technological progress, reduce the sintering circuit energy consumption, carry out UTILIZATION OF VESIDUAL HEAT IN, reduce pollutant (mainly being SO2, bioxin, dust) discharging, significant to the energy-saving and emission-reduction of whole steel industry.
" the comprehensive programme of work of " 12 " energy-saving and emission-reduction " issued by the State Council requires: steel industry will be implemented in full flue gas of sintering machine during " 12 ", and newly-built sintering machine is wanted supporting installation desulfurization facility.And requirement promotes energy-conservation and UTILIZATION OF VESIDUAL HEAT IN work.Explicitly call for 2015, the kiln average operating efficiency improved 2 percentage points than 2010, and the electric system operational efficiency improves 2-3 percentage point, 2,000 ten thousand kilowatts of newly-increased waste heat top pressure power generation abilities.
Nine ministries and commissions such as Environmental Protection Department united and issued " about strengthening the instruction of dioxin pollution control " and require on October 19th, 2010: emphasis is done a good job of it key industry dioxin contamination preventing and controlling such as iron ore sintering machine, encourages to adopt the sintered discharge gas circulating technology to reduce the discharge capacity of waste gas generation and dioxin organic pollution.
Co., Ltd of Baogang Stocks Trading Co. is the demonstration enterprise of China's steel industry energy-saving and emission-reduction, is equipped with 3 495m
2Sintering machine.In order to guarantee the reduction of discharging requirement of full production, increased desulfurizer and come into operation in 2010.But do not have sinter fume recycling residual heat technology, do not reduce the measure of waste gas and dioxin emission yet.2 * 430m of Ningbo Iron and Steel Co
2The 1# unit of sintering machine engineering was gone into operation in May, 2007." the Ning Gang 430m that deliver in February, 2008
2The characteristics of sintering machine engineering design " to have introduced the conservation measures of 1# unit be main exhauster speed governing and hot gas sintering technology to paper.But do not have sinter fume recycling residual heat technology, do not reduce the measure of waste gas and dioxin emission yet.This unit does not have desulfurizer, and exhaust chimney is up to 200 meters, and the annual SO2 charges for disposing pollutants of only paying are above 4,000,000 yuan.
Announced " sintering mineral powder machine " patent of invention (200410100876.X) on June 14th, 2006.This INVENTION IN GENERAL is to replace the imitation frosted glass dolly with movable supporting plate, and with the purpose that reaches energy-saving and cost-reducing, reduces investment, this invention is not seen use in existing big-and-middle-sized iron ore sintering machine, does not relate to energy-saving and emission-reduction and UTILIZATION OF VESIDUAL HEAT IN content simultaneously yet.
" a kind of energy-conservation chain belt sintering machine " patent of invention (2011100037146.X) that on May 25th, 2011 announced.This invention arranges chain belt, front and back lift etc. at sintering machine, does not see use in existing big-and-middle-sized iron ore sintering machine, does not also relate to energy-saving and emission-reduction and UTILIZATION OF VESIDUAL HEAT IN content.
Summary of the invention
Technical problem to be solved by this invention provides a kind of novel energy-saving emission-reducing sintering machine system and sintering method, the sintered discharge gas waste heat has been carried out recycling, has reduced the discharging of organic pollutions such as NOx, bioxin.
The technical solution adopted for the present invention to solve the technical problems is: a kind of novel energy-saving emission-reducing sintering machine system is provided, comprise the sintering unit room, described sintering unit room one side is connected with the grate-layer material distribution device with the mixture distributor device, described mixture distributor device is connected with the secondary mixing chamber by conveyer belt, described secondary mixing chamber is connected with the mixed once chamber by conveyer belt, described mixed once chamber is connected with proportioning room by conveyer belt, urea liquid is set between described proportioning room and the mixed once chamber sprays device, described sintering unit room tail is arranged single roll crusher, described single roll crusher is connected with rotary forced-air cooler by conveyer belt, described rotary forced-air cooler is connected with finished product sieve compartment I by conveyer belt, described finished product sieve compartment I is connected with finished product sieve compartment II by conveyer belt, described finished product sieve compartment II is connected with finished product sieve compartment III by conveyer belt, described finished product sieve compartment II is connected with the grate-layer material distribution device by conveyer belt, described finished product sieve compartment III is connected with proportioning room by conveyer belt, described finished product sieve compartment I, finished product sieve compartment II, finished product sieve compartment III is connected with the finished product stockyard by conveyer belt respectively, described sintering unit room head is connected with absorbent charcoal adsorber by fume pipe, described absorbent charcoal adsorber is connected with the head electric cleaner by fume pipe, described head electric cleaner is connected with main exhauster by fume pipe, described main exhauster is connected with booster fan by fume pipe, described booster fan is connected with desulfuration absorbing tower by fume pipe, the flue gas recirculation system is arranged in described sintering unit room both sides, described flue gas recirculation system is by multi-tube dust cleaner, circulating fan, the bellows I, the bellows II, the bellows III, the circulation fan housing is formed, described bellows I is connected with the sintering unit room by fume pipe with the bellows II, arrange switch valve between described bellows I and bellows II and the sintering unit room, described bellows I is connected with multi-tube dust cleaner by fume pipe with the bellows II, described multi-tube dust cleaner is connected with circulating fan by fume pipe, described circulating fan is connected with the bellows III by fume pipe, and the circulated air cover of described bellows III is arranged in sintering unit room top.
Described rotary forced-air cooler adopts cooling blower air blast cooling clinker mineral particle.
The waste gas residual heat of described rotary forced-air cooler is fully absorbed by waste heat boiler.
Described whole sintering machine system adopts sack cleaner I and the dedusting of sack cleaner II.
Described desulfuration absorbing tower is simultaneously to the sintering flue gas desulfurization dedusting of several sintering machine systems.
The present invention also provides a kind of sintering method of a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, may further comprise the steps:
1) sinter return fine, raw material ore deposit, flux, solid fuel, iron content dust are formed raw materials for sintering in the weighing of proportioning room automatic mixing;
2) raw materials for sintering is sent to the mixed once chamber successively by conveyer and the secondary mixing chamber mixes, and urea liquid sprays device and sprays urea liquid to raw materials for sintering in the transport process;
3) the mixed sintering raw material is sent to the mixture distributor device by conveyer from the secondary mixing chamber, and the mixture distributor device is arranged in the mixed sintering raw material in the compound ore deposit groove of sintering unit room;
4) the mixed sintering raw material becomes sinter cake at the indoor sintering reaction that carries out of sintering machine, and sinter cake is broken into the mineral particle that diameter is 0mm～150mm by single roll crusher;
5) the mineral particle is sent in the rotary forced-air cooler by conveyer and cools off, and cooled mineral particle is sent to successively in finished product sieve compartment I, finished product sieve compartment II, the finished product sieve compartment III and sieves;
6) finished product sieve compartment I is sieved out diameter and is delivered to the finished product stockyard greater than the mineral particle of 20mm as finished product;
7) finished product sieve compartment II is sieved out the mineral particle that diameter is 10mm～20mm, a part is delivered to the finished product stockyard as finished product, remainder is as the sintering auxiliary material of sintering unit room, be sent to the grate-layer material distribution device by conveyer, the grate-layer material distribution device is arranged in the sintering auxiliary material on the chassis of sintering unit room uniformly;
8) to sieve out diameter be that the mineral particle of 5mm～10mm is delivered to the finished product stockyard as finished product to finished product sieve compartment III;
9) diameter is delivered in the proportioning room by conveyer as sinter return fine less than the mineral particle of 5mm in the finished product sieve compartment III;
10) the mixed sintering raw material produces sinter fume at the indoor sintering reaction that carries out of sintering machine, and not clean-burning sinter fume enters the flue gas recirculation system and gets back to the sintering unit room rekindle behind flue gas ash removal;
11) the indoor sinter fume of sintering machine through main exhauster extract and the booster fan supercharging after, enter absorbent charcoal adsorber and head electric precipitation successively along fume pipe, carry out flue gas and adsorb dedusting;
12) sinter fume enters desulfuration absorbing tower along fume pipe at last and discharges from flue behind flue gas desulfurization and dedusting.
Beneficial effect
The present invention relates to a kind of novel energy-saving emission-reducing sintering machine system and sintering method, urea liquid is set sprays device, suppress the formation of bioxin in the sintering process, reduce the bioxin discharging.Absorbent charcoal adsorber is set, and organic matter such as De bioxin in the absorption flue gas reduces organic matter dischargings such as bioxin.The flue gas recirculation system is set, and when the hot flue gas of sintering machine high temperature section cycled through sinter bed again, the high temperature sensible heat of flue gas was all supplied with sinter mixture, and the CO in the circulating flue gas rekindles, and reached the effect of UTILIZATION OF VESIDUAL HEAT IN, saving sintering process energy consumption.Organic pollutions such as De bioxin, PAHs, VOC are decomposed by fierceness during up to the sintering belt more than 1300 ℃ in by sinter bed in the hot flue gas, NOx also can significantly reduce the discharge capacity of organic pollutions such as NOx, bioxin by thermal decomposition by partial destruction by the high temperature sintering band time.Save sintering fuel unit consumption 3%～6%, the sintered discharge gas total emission volumn descends 25～40%, and sintering deposit energy consumption per ton is saved 2.5～5kg mark coal, and 80 meters of absorption tower total heights are set, and reduces the chimney construction of conventional sintering machine up to 200 meters, separate unit 430m
2Sintering machine can be saved 4,000,000 yuan of charges for disposing pollutants every year.Waste heat boiler is set fully absorbs the central cooler waste gas residual heat, steam is provided and carries out cogeneration, separate unit 430m
2Sintering machine can increase 10,000 kilowatts of generating capacities newly.Main motor such as main exhauster, flue gas recirculation blower fan all adopts RHVC, and energy-saving effect surpasses 15%.Dedusting and pneumatic seal induction system are set, reduce the dust secondary pollution, realize comprehensive utilization of resources.
Description of drawings
Fig. 1 is structure schematic flow sheet of the present invention;
Fig. 2 is flue gas recirculation process chart of the present invention;
Fig. 3 process chart of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As Figure 1-3, the present invention relates to a kind of novel energy-saving emission-reducing sintering machine system, comprise sintering unit room 7, described sintering unit room 7 one sides are connected with grate-layer material distribution device 6 with mixture distributor device 5, described mixture distributor device 5 is connected with secondary mixing chamber 4 by conveyer belt, described secondary mixing chamber 4 is connected with mixed once chamber 3 by conveyer belt, described mixed once chamber 3 is connected with proportioning room 1 by conveyer belt, urea liquid is set between described proportioning room 1 and the mixed once chamber 3 sprays device 2, described sintering unit room 7 tails are arranged single roll crusher 9, described single roll crusher 9 is connected with rotary forced-air cooler 10 by conveyer belt, described rotary forced-air cooler 10 is connected with finished product sieve compartment I 12 by conveyer belt, described finished product sieve compartment I 12 is connected with finished product sieve compartment II 13 by conveyer belt, described finished product sieve compartment II 13 is connected with finished product sieve compartment III 14 by conveyer belt, described finished product sieve compartment II 13 is connected with grate-layer material distribution device 6 by conveyer belt, described finished product sieve compartment III 14 is connected with proportioning room 1 by conveyer belt, described finished product sieve compartment I 12, finished product sieve compartment II 13, finished product sieve compartment III 14 is connected with finished product stockyard 22 by conveyer belt respectively, described sintering unit room 7 heads are connected with absorbent charcoal adsorber 15 by fume pipe, described absorbent charcoal adsorber 15 is connected with head electric cleaner 16 by fume pipe, described head electric cleaner 16 is connected with main exhauster 17 by fume pipe, described main exhauster 17 is connected with booster fan 18 by fume pipe, described booster fan 18 is connected with desulfuration absorbing tower 19 by fume pipe, flue gas recirculation system 8 is arranged in described sintering unit room 7 both sides, described flue gas recirculation system 8 is by multi-tube dust cleaner 24, circulating fan 25, bellows I 26, bellows II 27, bellows III 28, circulation fan housing 29 is formed, described bellows I 26 is connected with sintering unit room 7 by fume pipe with bellows II 27, arrange switch valve between described bellows I 26 and bellows II 27 and the sintering unit room 7, described bellows I 26 is connected with multi-tube dust cleaner 24 by fume pipe with bellows II 27, described multi-tube dust cleaner 24 is connected with circulating fan 25 by fume pipe, described circulating fan 25 is connected with bellows III 28 by fume pipe, the circulation fan housing 29 of described bellows III 28 is arranged in sintering unit room 7 tops, described rotary forced-air cooler 10 adopts cooling blower 11 air blast cooling clinker mineral particle, the waste gas residual heat of described rotary forced-air cooler 10 is fully absorbed by waste heat boiler 30, described whole sintering machine system adopts sack cleaner I 20 and 21 dedustings of sack cleaner II, and described desulfuration absorbing tower 19 is simultaneously to sinter fume 23 desulfurization and dedustings of several sintering machine systems.
The sintering method of described a kind of novel energy-saving emission-reducing sintering machine system may further comprise the steps:
1) sinter return fine, raw material ore deposit, flux, solid fuel, iron content dust are formed raw materials for sintering in proportioning room 1 automatic mixing weighing;
2) raw materials for sintering is sent to mixed once chamber 3 successively by conveyer and secondary mixing chamber 4 mixes, and urea liquid sprays device 2 and sprays urea liquid to raw materials for sintering in the transport process;
3) the mixed sintering raw material is sent to mixture distributor device 5 by conveyer from secondary mixing chamber 4, and mixture distributor device 5 is arranged in the mixed sintering raw material in the compound ore deposit groove of sintering unit room 7;
4) the mixed sintering raw material carries out sintering reaction and becomes sinter cake in sintering unit room 7, and sinter cake is broken into the mineral particle that diameter is 0mm～150mm by single roll crusher 9;
5) the mineral particle is sent in the rotary forced-air cooler 10 by conveyer and cools off, and cooled mineral particle is sent to successively in finished product sieve compartment I 12, finished product sieve compartment II 13, the finished product sieve compartment III 14 and sieves;
6) finished product sieve compartment I 12 is sieved out diameter and is delivered to finished product stockyard 22 greater than the mineral particle of 20mm as finished product;
7) finished product sieve compartment II 13 is sieved out the mineral particle that diameter is 10mm～20mm, a part is delivered to finished product stockyard 22 as finished product, remainder is as the sintering auxiliary material of sintering unit room 7, be sent to grate-layer material distribution device 6 by conveyer, grate-layer material distribution device 6 is arranged in the sintering auxiliary material on the chassis of sintering unit room 7 uniformly;
8) to sieve out diameter be that the mineral particle of 5mm～10mm is delivered to finished product stockyard 22 as finished product to finished product sieve compartment III 14;
9) diameter is delivered in the proportioning room 1 by conveyer as sinter return fine less than the mineral particle of 5mm in the finished product sieve compartment III 14;
10) the mixed sintering raw material carries out sintering reaction and produces sinter fume in sintering unit room 7, and not clean-burning sinter fume enters flue gas recirculation system 8 and gets back to sintering unit room 7 rekindle behind flue gas ash removal;
11) sinter fume in the sintering unit room 7 enters absorbent charcoal adsorber 15 and head electric precipitation 16 successively along fume pipe after main exhauster 17 extractions and booster fan 18 superchargings, carries out flue gas absorption dedusting;
12) sinter fume enters desulfuration absorbing tower 19 along fume pipe at last and discharges from flue behind flue gas desulfurization and dedusting.
Embodiment 1
The production procedure of sintering machine system comprises: batching, mixing, cloth, sintering, cooling, the screening of whole grain, flue gas recirculation, flue-gas dust-removing and desulfurization, sinter return fine, raw material ore deposit, flux, solid fuel, iron content dust etc. are delivered to mixed once chamber 3,4 mixing of secondary mixing chamber by feed mechanism more successively in proportioning room 1 automatic weighing.Urea liquid sprinkling device 2 in 3 settings of proportioning room 1 and mixed once chamber is sprayed at urea liquid on the raw materials for sintering, raw materials for sintering is after twice mixing, by sealing-tape machine compound is delivered to mixture distributor device 5, mixture distributor device 5 is arranged in compound in the agglomerating chamber 7 uniformly.Agglomerating chamber 7 sinters compound into sinter cake, the flue gas that agglomerating chamber's 7 sintering produce is after absorbent charcoal adsorber 15 absorption and 16 dedustings of head electric cleaner, discharge from flue through desulfuration absorbing tower 19 desulfurization and dedustings again, for compound fully the flue gas that produces of burning enter flue gas recirculation system 8, coming back to agglomerating chamber 7 fully burns, after sinter cake is broken into the clinker mineral particle by single roll crusher 9, enter rotary forced-air cooler 10 coolings, enter finished product sieve compartment I 12 successively after the cooling of mineral particle, finished product sieve compartment II 13, finished product sieve compartment III 14 is sieved, finished product sieve compartment I 12 is sieved out mineral particle diameter and is delivered to finished product stockyard 22 greater than the finished product mineral particle of 20mm, diameter enters finished product sieve compartment II 13 less than the mineral particle of 20mm and screens, it is that the mineral particle of 10mm～20mm grade is as grate-layer material that finished product sieve compartment II 13 is sieved out diameter, be transported to sintering machine shop fixtures hopper by sealing-tape machine, redundance is delivered to finished product stockyard 22 as finished product mineral particle, diameter is delivered to finished product sieve compartment III 14 less than the part of 10mm, it is that the mineral particle of 5mm～10mm is delivered to finished product stockyard 22 as finished product that finished product sieve compartment III 14 is sieved out diameter, and diameter is delivered to proportioning room 1 less than the mineral particle of 5mm and carried out sintered.
Claims (6)
1. novel energy-saving emission-reducing sintering machine system, comprise sintering unit room (7), it is characterized in that, described sintering unit room (7) one sides are connected with grate-layer material distribution device (6) with mixture distributor device (5), described mixture distributor device (5) is connected with secondary mixing chamber (4) by conveyer belt, described secondary mixing chamber (4) is connected with mixed once chamber (3) by conveyer belt, described mixed once chamber (3) is connected with proportioning room (1) by conveyer belt, urea liquid is set between described proportioning room (1) and mixed once chamber (3) sprays device (2), described sintering unit room (7) tail is arranged single roll crusher (9), described single roll crusher (9) is connected with rotary forced-air cooler (10) by conveyer belt, described rotary forced-air cooler (10) is connected with finished product sieve compartment I (12) by conveyer belt, described finished product sieve compartment I (12) is connected with finished product sieve compartment II (13) by conveyer belt, described finished product sieve compartment II (13) is connected with finished product sieve compartment III (14) by conveyer belt, described finished product sieve compartment II (13) is connected with grate-layer material distribution device (6) by conveyer belt, described finished product sieve compartment III (14) is connected with proportioning room (1) by conveyer belt, described finished product sieve compartment I (12), finished product sieve compartment II (13), finished product sieve compartment III (14) is connected with finished product stockyard (22) by conveyer belt respectively, described sintering unit room (7) head is connected with absorbent charcoal adsorber (15) by fume pipe, described absorbent charcoal adsorber (15) is connected with head electric cleaner (16) by fume pipe, described head electric cleaner (16) is connected with main exhauster (17) by fume pipe, described main exhauster (17) is connected with booster fan (18) by fume pipe, described booster fan (18) is connected with desulfuration absorbing tower (19) by fume pipe, flue gas recirculation system (8) is arranged in described sintering unit room (7) both sides, described flue gas recirculation system (8) is by multi-tube dust cleaner (24), circulating fan (25), bellows I (26), bellows II (27), bellows III (28), circulation fan housing (29) is formed, described bellows I (26) is connected with sintering unit room (7) by fume pipe with bellows II (27), arrange switch valve between described bellows I (26) and bellows II (27) and the sintering unit room (7), described bellows I (26) is connected with multi-tube dust cleaner (24) by fume pipe with bellows II (27), described multi-tube dust cleaner (24) is connected with circulating fan (25) by fume pipe, described circulating fan (25) is connected with bellows III (28) by fume pipe, and the circulation fan housing (29) of described bellows III (28) is arranged in sintering unit room (7) top.
2. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1 is characterized in that, described rotary forced-air cooler (10) adopts cooling blower (11) air blast cooling clinker mineral particle.
3. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1 is characterized in that, the waste gas residual heat of described rotary forced-air cooler (10) is fully absorbed by waste heat boiler (30).
4. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1 is characterized in that, described whole sintering machine system adopts sack cleaner I (20) and sack cleaner II (21) dedusting.
5. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1 is characterized in that, described desulfuration absorbing tower (19) is simultaneously to sinter fume (23) desulfurization and dedusting of several sintering machine systems.
6. a right to use requires the sintering method of 1 described a kind of novel energy-saving emission-reducing sintering machine system, may further comprise the steps:
1) sinter return fine, raw material ore deposit, flux, solid fuel, iron content dust are formed raw materials for sintering in proportioning room (1) automatic mixing weighing;
2) raw materials for sintering is sent to mixed once chamber (3) successively by conveyer and secondary mixing chamber (4) mixes, and urea liquid sprays device (2) and sprays urea liquid to raw materials for sintering in the transport process;
3) the mixed sintering raw material is sent to mixture distributor device (5) by conveyer from secondary mixing chamber (4), and mixture distributor device (5) is arranged in the mixed sintering raw material in the compound ore deposit groove of sintering unit room (7);
4) the mixed sintering raw material carries out sintering reaction and becomes sinter cake in sintering unit room (7), and sinter cake is broken into the mineral particle that diameter is 0mm～150mm by single roll crusher (9);
5) the mineral particle is sent in the rotary forced-air cooler (10) by conveyer and cools off, and cooled mineral particle is sent to successively in finished product sieve compartment I (12), finished product sieve compartment II (13), the finished product sieve compartment III (14) and sieves;
6) finished product sieve compartment I (12) is sieved out diameter and is delivered to finished product stockyard (22) greater than the mineral particle of 20mm as finished product;
7) finished product sieve compartment II (13) is sieved out the mineral particle that diameter is 10mm～20mm, a part is delivered to finished product stockyard (22) as finished product, remainder is as the sintering auxiliary material of sintering unit room (7), be sent to grate-layer material distribution device (6) by conveyer, grate-layer material distribution device (6) is arranged in the sintering auxiliary material on the chassis of sintering unit room (7) uniformly;
8) to sieve out diameter be that the mineral particle of 5mm～10mm is delivered to finished product stockyard (22) as finished product to finished product sieve compartment III (14);
9) diameter is delivered in the proportioning room (1) by conveyer as sinter return fine less than the mineral particle of 5mm in the finished product sieve compartment III (14);
10) the mixed sintering raw material carries out sintering reaction and produces sinter fume in sintering unit room (7), and not clean-burning sinter fume enters flue gas recirculation system (8) and gets back to sintering unit room (7) rekindle behind flue gas ash removal;
11) sinter fume in the sintering unit room (7) enters absorbent charcoal adsorber (15) and head electric precipitation (16) successively along fume pipe after main exhauster (17) extraction and booster fan (18) supercharging, carries out flue gas absorption dedusting;
12) sinter fume enters desulfuration absorbing tower (19) along fume pipe at last and discharges from flue behind flue gas desulfurization and dedusting.
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| CN104152678A (en) * | 2014-08-18 | 2014-11-19 | 北京科技大学 | Device and process for removing lead and zinc elements from iron ore |
| CN105318734A (en) * | 2015-03-21 | 2016-02-10 | 李正福 | Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue |
| CN110283994A (en) * | 2019-07-20 | 2019-09-27 | 武钢集团昆明钢铁股份有限公司 | A kind of more calx production methods based on iron ore sintering |
| CN111203083A (en) * | 2020-02-25 | 2020-05-29 | 钢铁研究总院 | Sintering flue gas desulfurization and denitrification process |
| CN111318147A (en) * | 2020-02-25 | 2020-06-23 | 钢铁研究总院 | Sintering flue gas desulfurization and denitrification circulation system |
| CN112226613A (en) * | 2020-09-17 | 2021-01-15 | 马鞍山钢铁股份有限公司 | Multi-pollutant collaborative emission reduction method in sintering process |
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| CN114558779A (en) * | 2022-03-03 | 2022-05-31 | 广东韶钢松山股份有限公司 | Whole grain screening plant and whole grain screening system |
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