CN109402383A - A kind of method and apparatus of optimization sintering moisture - Google Patents
A kind of method and apparatus of optimization sintering moisture Download PDFInfo
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- CN109402383A CN109402383A CN201811598235.XA CN201811598235A CN109402383A CN 109402383 A CN109402383 A CN 109402383A CN 201811598235 A CN201811598235 A CN 201811598235A CN 109402383 A CN109402383 A CN 109402383A
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- sintering
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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
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Abstract
The present invention provides a kind of method and apparatus of optimization sintering moisture, step includes ingredient, mixed pelletization, preheating and cloth, lights a fire and is sintered and cooled and sieves.A kind of method and apparatus of optimization sintering moisture provided by the invention, purpose is to be preheated by cooling flue gas to mixture, appropriate to reduce moisture added by mixed pelletization, and it is overly moist to reduce sintering process, to improve the sintering velocity of material during the sintering process, the effect that sintering proposes production is played.The steam that heating by the exhaust gases material generates guides to sinter bed by injector and carries out charge level blowing steam.Finally, which realizes sintering and proposes production by optimization moisture in the reasonable distribution of sintering process.
Description
Technical field
The invention belongs to sintering art, in particular to a kind of method and apparatus of optimization sintering moisture.
Background technique
Iron ore powder sintering process is to sinter fine ore or fine powder the process of mine into addition of flux and fuel；In this process
In, mixed pelletization is one of key, and by various thin materials, in mixing machine then mixed pelletization is carried out at the bead of quasi- particle
Sintering；Bead+3mm ratio number represent the quality of granulating efficiency, good pelletizing effect is helped to improve and is mixed on pallet
The gas permeability for closing the material bed of material, so that sintering velocity and sintering machine yield can be improved.Around granulating efficiency is improved, traditionally took
Many measures change the revolving speed of filling rate and mixing machine, using strong mixing device or balling disk (-sc) etc. such as optimal water allocation (see Fig. 1).?
In terms of water distribution, it is however generally that, the relationship of mixture water distribution and bed permeability presentation inverted V type；Properly increasing moisture helps to change
Kind two it is mixed during ball-formation quality, increase the gas permeability of the bed of material, but the excessively high then gas permeability of moisture deteriorates.With current deep bed sintering
The application of technology, the bed of material is overly moist in order to prevent, and the general practical more best water distribution quantity of water distribution is low in terms of water distribution.Such as mixture
Best water distribution quantity be 7.5%, practical general water distribution is 7.0% or so.
The present invention, with current deep bed sintering problem overly moist is summed it up, is proposed through cooling useless cigarette for sintering traditional handicraft moisture
Gas preheats mixture suitably to drop low-moisture thinking, the lance for overcoming mixed pelletization water consumption and being sintered between gas permeability
Shield plays the effect that sintering proposes production to improve the sintering velocity of material during the sintering process.
Summary of the invention
In order to solve the above technical problems, The present invention provides a kind of method and apparatus of optimization sintering moisture, by drawing
The cooling flue gas of ring cold machine end is introduced cloth mine slot by blower, and to the mixing after mixing granulation inside cloth mine slot
Material is preheated, and appropriate to reduce moisture added by mixed pelletization, reduction sintering process is overly moist, to improve material in sintering process
In sintering velocity, play sintering and propose the effect of production.Heating by the exhaust gases material generate steam, by injector guide to sinter bed into
Row charge level blowing steam.Finally, which realizes sintering and proposes production by optimization moisture in the reasonable distribution of sintering process.
The technical scheme adopted by the invention is as follows: it is a kind of for optimizing the device of sintering moisture, including pass through conveying equipment
It is sequentially connected cloth mine slot, sintering machine and the ring cold machine for cooling down sintered ore materials of setting；It further include injector and air-introduced machine,
The air inlet of the injector is connect with cloth mine slot, and the gas outlet of injector is set to above the bed of cloth in sintering machine；It is described
The air inlet of air-introduced machine is connect with ring cold machine end, and the air outlet of the air-introduced machine is connect with cloth mine slot.A kind of optimization sintering
The method of moisture, which comprises the device of application optimization sintering moisture as described above, it is specific: by ring cold machine end
Exhaust gas via air-introduced machine lead to cloth mine slot and to the preheating of mixed material of pre-sintering therein, the mixing of the pre-sintering after preheating
Material is uniformly distributed to pallet via cloth mine slot again, and the steam that the heating by the exhaust gases mixture generates guides to burning via injector again
It ties on the bed of cloth in trolley, the bed of cloth is with a thickness of 500-1000mm.Wherein conveying equipment is equipment commonly used in the art, than
Such as belt conveyor or screw conveyor.
In order under the premise of guaranteeing granulating efficiency, reduce the water content of the pre-sintering mixture in cloth mine slot, increase
Bed permeability advanced optimizes, and the mixture of the pre-sintering in cloth mine slot is made by the following method: first in ingredient
Weigh raw materials for sintering component in room, be then delivered to trommel mixer via conveying equipment and mix wetting, then again via
Conveying equipment is delivered to secondary trommel mixer mixed pelletization, is then delivered to cloth mine slot via conveying equipment again；It is described mixed
Even granulation is completed under conditions of material moisture is 7.5-8%.
A kind of method and apparatus of optimization sintering moisture provided by the invention, the advantage is that: 1, can be achieved by by two
Water during mixed is improved to guarantee pelletizing quality.2, heat mixture using ring cold machine end exhaust gas, make two it is mixed after through by
Cloth mine slot cloth expects that the moisture of the mixture on trolley is reduced to 6.0-6.5%, had not only had pre- heat effect to sintering feed in this way but also had protected
Bead integrity is demonstrate,proved, and it is overly moist to also avoid material, has optimized bed of cloth gas permeability on the whole, effectively improve sintering velocity
And increase sintering output and sintering quality；3, conventional sintering is eliminated to match in hydraulic art by adding steam preheating to burn to cloth mine slot
The process of ramming material also avoids sintering feed influence bed permeability overly moist；4, exhaust gas is caused by the pre- heat mixture of cloth mine slot
Steam, mapping spray into sinter bed after igniting, can be conducive to mention sintering at deep bed thickness, and guarantee sintering quality and sintering velocity.
5, exhaust gas high temperature section waste gas stream caused by the pre- heat mixture of cloth mine slot can be sent into pipe network and realize utilization of resources.
Detailed description of the invention
Fig. 1 is conventional sintering water distribution process flow chart in comparative example 1.
Fig. 2 is the embodiment of the present invention 1 for optimizing the device of sintering moisture.
Fig. 3 is the process flow diagram that a kind of optimization of the embodiment of the present invention 1 is sintered the method for moisture.
In figure: 1. proportioning rooms, 2. trommel mixers, 3. 2 trommel mixers, 4. cloth mine slots, 5. sintering machines,
6. ring cold machine, 7. triple unit vibration screens, 8. injectors, 9. air-introduced machines.
Specific embodiment
The present invention is described in further detail below with reference to embodiment:
Embodiment 1:
Referring to figs. 2 and 3, a kind of for optimizing the device of sintering moisture, the proportioning room 1, one including being sequentially connected setting
Secondary trommel mixer 2, secondary trommel mixer 3, cloth mine slot 4, sintering machine 5, ring cold machine 6 and triple unit vibration screen 7 further include
The air inlet of injector 8 and air-introduced machine 9, injector is connect with cloth mine slot, and the gas outlet of injector is set to the cloth in sintering machine
Above the bed of material；The air inlet of the air-introduced machine is connect with ring cold machine end exhaust outlet, the air outlet and cloth mine of the air-introduced machine
Slot connection.
Based on above-mentioned for optimize the device of sintering moisture, it includes ingredient that a kind of optimization, which is sintered method its step of moisture,
Mixed pelletization, preheating and cloth, light a fire and are sintered and cooled and sieve.Purpose is to be carried out in advance by cooling flue gas to mixture
Heat, appropriate to reduce moisture added by mixed pelletization, reduction sintering process is overly moist, to improve the sintering of material during the sintering process
Speed plays the effect that sintering proposes production.The steam that heating by the exhaust gases material generates guides to sinter bed by injector and carries out charge level spray
Steam blowing.Finally, which realizes sintering and proposes production by optimization moisture in the reasonable distribution of sintering process.
Specific step is as follows for the optimization sintering moisture:
(1) proportioning room ingredient:
It is weighed in proportioning room the following raw material component (being mass percent): Iron Ore Powder proportion 60%, quick lime proportion
5%, lime stone proportion 2%, dolomite proportion 6%, fuel (the present embodiment selection coke powder) proportion 4%, proportion of returning mine 23%, so
Material component is delivered to a trommel mixer by the conveying equipment by belt or helical feed etc.
(2) it mixes and pelletizes, prepare the mixture of pre-sintering:
The material component for being delivered to a trommel mixer is mixed into wetting (namely one mixed), is then sent to secondary cylinder
Mixing machine carries out the mixture that mixing granulation (namely two mixed) is pre-sintered, and controls mixing after Jing Yici trommel mixer one is mixed
Biodiversity content is 7.2% in material, and the mass content that moisture in mixture is controlled after secondary trommel mixer two is mixed is
8.0%, the Granulation time of a trommel mixer and secondary trommel mixer controls 2min and 4min respectively.
(3) preheating of cloth mine slot and cloth:
Mixture made from step (2) is delivered to cloth mine slot, steam is not added in cloth mine slot.Then pass through air inducing
Machine the exhaust gas exhausting of ring cold machine end is led in cloth mine slot and preheat the mixture in cloth mine slot, exhaust gas and mixture into
Row heat exchange, and then cloth expects that the moisture for the mixture being pre-sintered on trolley is reduced to 6.0-6.5% after control preheating；Because heat exchange produces
Raw steam after then taking ignition of sintering process to by injector, sprays into sinter bed from sintering machine charge level；Cloth mine slot is being sintered
Fabric thickness control in machine is 800mm.
(4) it lights a fire and is sintered:
The firing temperature for controlling sintering machine is 1100 DEG C, duration of ignition 1min, and light a fire vacuum cavitations 10000Pa；After igniting
It is sintered vacuum cavitations 12000Pa.
(5) cooling and sieve: using the outer type of cooling of cooling or machine on any machine, by ring cold machine by the temperature of sinter
Degree is reduced to 200 DEG C or less.
Sieve uses sieve pore to sieve for the vibrating screen of 5mm to the sinter after cooling treatment three times, and screenings is sintering
It returns mine, oversize is that finished product sinter is sent to blast furnace.
Comparative example 1:
See Fig. 1, hydraulic art is matched based on conventional sintering, is mainly included the following steps:
(1) proportioning room ingredient (with the distribution in embodiment 1):
Weigh following component: Iron Ore Powder proportion 60%, quick lime proportion 5%, lime stone proportion 2%, dolomite proportion
6%, fuel ratio 4%, proportion of returning mine 23%.
(2) it mixes and pelletizes:
The weighed material component of institute is passed through into a trommel mixer and secondary trommel mixer mixing granulation respectively, through one
Control biodiversity content is 7.0% after secondary trommel mixer one is mixed, is controlled in mixture after secondary trommel mixer two is mixed
The mass content of moisture be 7.5% (in conventional sintering, due to preventing the bed of material overly moist, two it is mixed after water distributions is usually no more than 8%),
The Granulation time of trommel mixer and secondary trommel mixer controls 2 and 4min respectively.
(3) preheating and cloth:
Mixture in cloth mine slot only adds steam without other preheating steps in cloth mine slot.Therefore cloth expects trolley
After upper, 7.5% slightly higher, fabric thickness control 800mm of the moisture of mixture about compared with two after mixed.
(4) it lights a fire and is sintered:
The firing temperature for controlling sintering machine is 1100 DEG C, duration of ignition 1min, and light a fire vacuum cavitations 10000Pa；After igniting
It is sintered vacuum cavitations 12000Pa.
(5) cooling and sieve: using the outer type of cooling of cooling or machine on any machine, by ring cold machine by the temperature of sinter
Degree is reduced to 200 DEG C or less；Sieve uses sieve pore to sieve for the vibrating screen of 5mm to the sinter after cooling treatment three times, sieves
Lower object is sinter return fine, and oversize is that finished product sinter is sent to blast furnace.
In the sintering new process that the present invention indicates, by using the cold heating by the exhaust gases mixture of ring, make sinter mixture water
Part steam reduces about 1.5%, while not influencing the effect for being sintered pelletizing again.One side material temperature is improved；On the other hand it mixes
After expecting that moisture content reduces, phenomenon overly moist is largely alleviated.It ultimately helps to improve sintering gas permeability and sintering output (warp
Multiple comparison test, compared to comparative example 1, sintering output can be improved 8% or so in embodiment 1, each comparative test
Used raw material is same batch).Thermogenetic steam is changed, injection enters sinter bed, it may participate in the combustion reaction of carbon,
The efficiency of combustion of fuel is helped to improve again and reduces pollutant emission.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (3)
1. a kind of for optimizing the device of sintering moisture, it is characterised in that: the cloth including being sequentially connected setting by conveying equipment
Expect mine slot, sintering machine and the ring cold machine for cooling down sintered ore materials；It further include injector and air-introduced machine, the air inlet of the injector
Mouth is connect with cloth mine slot, and the gas outlet of injector is set to above the bed of cloth in sintering machine；The air inlet of the air-introduced machine with
The connection of ring cold machine end, the air outlet of the air-introduced machine are connect with cloth mine slot.
2. the method for the optimization sintering moisture of the device based on optimization sintering moisture as described in claim 1, it is characterised in that:
The described method includes: the exhaust gas of ring cold machine end is led to cloth mine slot, and the mixing to pre-sintering therein via air-introduced machine
Material preheating, the mixture of the pre-sintering after preheating are uniformly distributed to pallet, the heating by the exhaust gases mixture via cloth mine slot again
The steam of generation is guided on the bed of cloth in pallet via injector again, and the bed of cloth is with a thickness of 500-1000mm.
3. the method for optimization sintering moisture according to claim 2, it is characterised in that: the pre-sintering in the cloth mine slot
Mixture be obtained by the following method: raw materials for sintering component is weighed in proportioning room first, it is then defeated via conveying equipment
It send to a trommel mixer and mixes wetting, be then delivered to secondary trommel mixer mixed pelletization via conveying equipment again, so
Cloth mine slot is delivered to via conveying equipment again afterwards；The mixed pelletization is complete under conditions of material moisture is 7.5-8%
At.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811598235.XA CN109402383B (en) | 2018-12-26 | 2018-12-26 | Method and device for optimizing sintering moisture |
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| CN201811598235.XA CN109402383B (en) | 2018-12-26 | 2018-12-26 | Method and device for optimizing sintering moisture |
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| CN109402383B CN109402383B (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484717A (en) * | 2019-09-18 | 2019-11-22 | 四川省达州钢铁集团有限责任公司 | A kind of sintering method and sintering equipment |
| CN112050653A (en) * | 2020-09-28 | 2020-12-08 | 周艳军 | Sintering raw material steam preheating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0792349B2 (en) * | 1990-11-13 | 1995-10-09 | 新日本製鐵株式会社 | Exhaust heat recovery method of sintering machine |
| CN2499406Y (en) * | 2001-09-07 | 2002-07-10 | 邯郸钢铁股份有限公司 | Preheating mixed material device by directly using industrial hot waste gas |
| CN103320605A (en) * | 2013-06-25 | 2013-09-25 | 攀钢集团攀枝花钢钒有限公司 | Sintering method and sintering equipment of iron ore |
| CN103484661A (en) * | 2013-09-13 | 2014-01-01 | 中南大学 | Method for enhancing sintering of high-proportion limonite by utilization of waste heat of exhaust gas |
| CN103614549A (en) * | 2013-12-11 | 2014-03-05 | 武钢集团昆明钢铁股份有限公司 | Micro-power hot air preheating method and device for sintering secondary mixture |
| CN109055730A (en) * | 2018-09-25 | 2018-12-21 | 湖南华菱湘潭钢铁有限公司 | The method of steel works sintering preheating of mixed material |
-
2018
- 2018-12-26 CN CN201811598235.XA patent/CN109402383B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0792349B2 (en) * | 1990-11-13 | 1995-10-09 | 新日本製鐵株式会社 | Exhaust heat recovery method of sintering machine |
| CN2499406Y (en) * | 2001-09-07 | 2002-07-10 | 邯郸钢铁股份有限公司 | Preheating mixed material device by directly using industrial hot waste gas |
| CN103320605A (en) * | 2013-06-25 | 2013-09-25 | 攀钢集团攀枝花钢钒有限公司 | Sintering method and sintering equipment of iron ore |
| CN103484661A (en) * | 2013-09-13 | 2014-01-01 | 中南大学 | Method for enhancing sintering of high-proportion limonite by utilization of waste heat of exhaust gas |
| CN103614549A (en) * | 2013-12-11 | 2014-03-05 | 武钢集团昆明钢铁股份有限公司 | Micro-power hot air preheating method and device for sintering secondary mixture |
| CN109055730A (en) * | 2018-09-25 | 2018-12-21 | 湖南华菱湘潭钢铁有限公司 | The method of steel works sintering preheating of mixed material |
Non-Patent Citations (2)
| Title |
|---|
| 吕晓芳等: "《烧结矿与球团矿生产实训》", 31 May 2011 * |
| 日本钢铁协会: "《炼铁与炼钢》", 30 April 1981 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484717A (en) * | 2019-09-18 | 2019-11-22 | 四川省达州钢铁集团有限责任公司 | A kind of sintering method and sintering equipment |
| CN112050653A (en) * | 2020-09-28 | 2020-12-08 | 周艳军 | Sintering raw material steam preheating system |
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| CN109402383B (en) | 2020-05-19 |
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