CN1271022A - Homogeneous agglomerate sintering method and equipment - Google Patents
Homogeneous agglomerate sintering method and equipment Download PDFInfo
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- CN1271022A CN1271022A CN 00112242 CN00112242A CN1271022A CN 1271022 A CN1271022 A CN 1271022A CN 00112242 CN00112242 CN 00112242 CN 00112242 A CN00112242 A CN 00112242A CN 1271022 A CN1271022 A CN 1271022A
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- pallet
- sintering
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Abstract
The present invention relates to the field of metallurgical technology. After material distribution in sintering machine, the agglomerate is twice ignited, the first ignition is for preheating at temperature not higher than 900 deg.C and the second ignition is for the combustion of fuel in material layer at temperature of 1000-1150 deg.C. In the whole course of sintering, the downward draught mode with low-negative pressure and small ventilation is adopted to force wind to flow in the wind channel in mixed flow. After twice ignitions and cooling under the above said conditions, the agglomerate is obtained.
Description
The present invention relates to field of metallurgy sintering and the sintering method of producing agglomerate and used equipment thereof.
Since having agglomerate to produce, SINTERING PRODUCTION has experienced two stages:
The first-generation: to produce block agglomerate is target, sinter quality be there is no the lower stage of much requirements.The production technique of Cai Yonging is around here, thin shop, fast commentaries on classics, lower negative pressure, little air quantity operation.The result who produces is, high flow rate, high energy consumption, expensive " three height " after-product.
The s-generation: in secular SINTERING PRODUCTION, the scientific and technical personnel that are engaged in SINTERING PRODUCTION find that sinter bed self has " self heat accumulation function " in the sintering process, so propose to set forth one's views in " auto accumulation heat " cover sintering theory and a sintering novel process.From then on, SINTERING PRODUCTION obtains the progress of advancing by leaps and bounds, and has entered brand-new epoch.The production technique of Cai Yonging is thick shop, slow-speed around here, low-carbon (LC), low water; High negative pressure, big air quantity operation, the result who produces is: output, quality increase substantially, former, fuel consumption reduces greatly, technico-economical comparison is stepped on comprehensively and is attained a new height, promoted iron-smelting blast furnace production great development, the SINTERING PRODUCTION technical development has entered second epoch, the New Times of big suitability for industrialized production.
Iron-smelting blast furnace is the power of SINTERING PRODUCTION technical development to endless overcritical of agglomerate, the continuous application of new technology again for the SINTERING PRODUCTION technical development provides may.This two aspect is in conjunction with impelling the SINTERING PRODUCTION scientific and technical personnel constantly to make unremitting efforts to for pursuing the agglomerate that more welcome by the user with low-cost high profit production.The long s-generation production year for the lining, under the deep-bed sintering theoretical method instructs, in order further to improve the technico-economical comparison of SINTERING PRODUCTION, comprise output, quality, energy consumption and equipment life etc., SINTERING PRODUCTION scientific and technical personnel did a lot of superelevation (bed of material is high above 800 millimeters) bed of material sintering and explored, attempt further to excavate the potentiality of deep-bed sintering, it still adopts once igniting, and employing high negative pressure, big air quantity single flow exhausting operation, attempt to improve in this way bed thickness, but in fact, once igniting often makes the surface melting of the thick bed of material, space between the bed of material material is stopped up, whole bed of material resistance increases, and in order to keep operation, must improve the negative pressure and the air quantity of blower fan, its result causes distinguished and admirable rare short on the one hand, the whole bed of material does not reach even sintering, has caused increasing considerably of energy consumption power consumption on the other hand again, does not accomplish the end in view.Do not make progress up to now always.In other words, many SINTERING PRODUCTION scientific and technical personnel achieve no breakthrough to the exploration of superelevation bed of material sintering direction, and the effort of doing is not achieved success.This illustrates that existing sintering method, technology no longer adapt to new production situation, and it has fettered further developing of productivity.
Purpose of the present invention is exactly in order to address the above problem, and proposes a kind of homogeneous agglomerate sintering method and equipment thereof that can further improve the SINTERING PRODUCTION technico-economical comparison.
Technical solution of the present invention:
A kind of homogeneous agglomerate sintering method is characterized in that:
A, sintered material carry out twice igniting after finishing cloth on the sinter machine, preheat igniting for the bed of material for the first time, and the preheating igniting temperature is bed of material fuel combustion igniting for the second time smaller or equal to 900 ℃, and the combustion ignition temperature is controlled at 1000-1150 ℃;
B, in the sintering whole process of sintered material, its underpart exhausting adopts be force wind in the air channel in mixed flow form mobile exhausting mode;
C, in the sintering whole process of sintered material, adopt lower negative pressure, little air quantity operation;
D, sintered material also cool off under these conditions after twice igniting and promptly obtain qualified finished product of the present invention.
A kind of homogeneous agglomerate agglomerating plant, it includes the transmission chain belt, distributor, pallet, wind chamber and blower fan, distributor is arranged on the top of the corresponding head that transmits chain belt, each pallet is covered with whole transmission chain belt, being positioned at each pallet that transmits the chain belt top is the operation pallet, the below for the running pallet, the lower position of corresponding each operation pallet is equipped with the fixed wind chamber on frame, each wind chamber is connected with the main wind pumping channle that links to each other with blower fan by exhausting arm separately, it is characterized in that, position be right after distributor above transmitting chain belt after is provided with hot spot firearm and point of ignition firearm successively, between each wind chamber, be provided with full frame obstructing instrument, make that the wind in each wind chamber enters main wind pumping channle with the mixed flow form.
Homogeneous sintering process of the present invention and equipment thereof are obtained important breakthrough in superelevation bed of material sintering, bed of material height substantially exceeds 800 millimeters, reach 1000 millimeters super thick material layer, its successful sign shows: 1, the sintered material bed thickness has surpassed 850 millimeters, worldwide unique, 2, output improves more than 10%; 3, barrate strength improves more than 3%; 4, fuel consumption, power consumption reduce significantly, and be energy-conservation greater than 5%, improved the technico-economical comparison of SINTERING PRODUCTION greatly.
Fig. 1 is the structural representation sketch of present device;
Fig. 2 is a M portion structure for amplifying synoptic diagram among Fig. 1.
As Fig. 1-2, homogeneous sintering method of the present invention is, sintered material carries out twice igniting after finishing cloth on the sinter machine, preheat igniting for the bed of material for the first time, the preheating igniting temperature is smaller or equal to 900 ℃, be bed of material fuel combustion igniting for the second time, the combustion ignition temperature is controlled at 1000-1150 ℃, and the best is 1100 ℃.In the sintering whole process of sintered material, its underpart exhausting adopts be force wind in the air channel in mixed flow form mobile exhausting mode.In the sintering whole process of sintered material, adopt lower negative pressure, little air quantity operation.Sintered material also cools off under these conditions after twice igniting and promptly obtains qualified finished product of the present invention.
Among the present invention, mixed flow form mobile exhausting mode is meant, wind in the air channel with eddy current or acutely the form of scratching flow.
In the whole process of the inventive method, for 24m
2Sinter machine, the lower negative pressure that is adopted is meant that negative pressure is not more than 8KPa, little air quantity is meant that fan delivery configuration is not more than 70m
3/ m
2, for bigger sinter machine, the corresponding raising of the lower negative pressure value that is adopted with little airflow value some.
Homogeneous agglomerate agglomerating plant of the present invention includes and transmits chain belt 1, distributor 2, pallet 3, wind chamber 4 and blower fan 5, distributor 2 is arranged on the top of the corresponding head that transmits chain belt 1, each pallet 3 is covered with whole transmission chain belt 1, be positioned at each pallet 3 that transmits the chain belt top and be the operation pallet, the below for the running pallet, the lower position of corresponding each operation pallet 3 is equipped with fixed wind chamber 4 on frame, each wind chamber 4 is connected with the main wind pumping channle 7 that links to each other with blower fan 5 by exhausting arm 6 separately, characteristics of the present invention are, position be right after distributor 2 above transmitting chain belt 1 after is provided with hot spot firearm 8 and point of ignition firearm 9 successively, be provided with full frame obstructing instrument 10 4 of each wind chambers, make that the wind in each wind chamber 4 enters main wind pumping channle 7 with the mixed flow form.After regnition reduces systemic resistance, regulate the three dimension system resistance by energy wind and full frame block device cooperating.Sintering is initial, when certain regional area resistance during less than the adjacent area, it is many that energy wind passes through, when passing through it, energy is discharged to sintered material, when the energy accumulation of this district's sintered material when enough carrying out the rank of sintering reaction, sintering reaction begins, and particle shrinks simultaneously, and passage diminishes, energy wind is obstructed, flux reduces, and forces it seek new passage again, when new passage forms and hinders air quantity and pass through, the air quantity re-adjustment returns former passage, and whole sintering process is constantly evenly being carried out in the self-regulating process.
Full frame obstructing instrument 10 of the present invention can adopt the whirlwind impeller, also can adopt choked flow grid or choked flow wall construction.
Principle of work of the present invention is as follows: sintered material continuously carries out cloth through distributor 2 to the pallet 3 that transmits chain belt 1 top, and the pallet 3 of cloth honest material just moves up in the igniting cover of preheating igniting device 8 before transmitting chain belt 1.Meanwhile, the wind chamber 4 of these pallet 3 bottoms is under the effect of blower fan 5 lower negative pressures, little air quantity and inward turning fan blade 10 thereof, make that the wind in the wind chamber 4 is intercepted, form with slow mixed flow enters main wind pumping channle 7, force the flue gas on chassis 3 sintered material surfaces to penetrate the bed of material equably, form uniform passage from the path of seeking the resistance minimum.After pallet 3 enters in the igniting cover of hot spot firearm 8, the combustion flame of hot spot firearm burner just in cover the sintered material on the pallet 3 carry out preheating, the preheating igniting temperature is 650 ℃, and (this ignition temperature also can adopt 350 ℃, 400 ℃, 500 ℃, 700 ℃, 800 ℃, 900 ℃, its minimum temperature is as the criterion can light gaseous combustion), then all materials in the pallet 3 obtain uniform preheating under aforementioned uniform channeling.Pallet 3 after the preheating still moves up in the igniting cover of combustion ignition device 9 before transmitting chain belt 1, then point of ignition firearm 9 combustion flame that burns Zi, one of the lunar mansions is to the heating of burning of the material on pallet 3 surfaces, its combustion ignition temperature is 1050 ℃ (also can adopt 1100 ℃ or 1150 ℃), make in the surperficial material in the pallet 3 and self include fuel by ignition combustion, sintering process begins, the flue gas that self fuel combustion this moment produces is together with the lip-deep air of material still whirlwind impeller 10 in corresponding wind chamber 4 and blower fan 5 lower negative pressures, together pass the bed of material under the little air quantity effect by the uniform channel in the aforementioned material, the heat energy of material self fuel is fully used, thereby guarantee that vertical sintering speed carries out equably on three-dimensional space, chemical reaction process is thoroughly balanced, make the sintering of the super thick bed of material (greater than 800 millimeters) be achieved, technically obtain important breakthrough, technico-economical comparison increases substantially.After before pallet 3 continues with transmission chain belt 1, moving away combustion ignition device 9, the sintering process of material is proceeded in the chassis 3, self fuel in material by after-flame till, sintering process is finished voluntarily, pallet 3 still cools off with transmitting chain belt 1 reach then, this burns voluntarily and process of cooling is still under the mixed flow wind effect corresponding wind chamber 4 in and carries out, and moves to tail until pallet 3 with transmission chain belt 1 and unloads automatically, just obtains the qualified agglomerate finished product of the present invention.Each pallet 3 all carries out operation in a manner described again and again and goes down, and finishes the continuous production of agglomerate.
Because the present invention has adopted twice firing technique and full frame obstructing instrument technology, make the material in the entire job pallet 3 all obtain uniform exhaust gases passes, the drag losses of the bed of material reduces greatly, it has broken through the idea that traditional thickening bed of material must improve blower fan negative pressure and air quantity, only need to adopt the little air quantity operation of lower negative pressure can finish sintering process, fan delivery disposes for 24m
2Sinter machine can be from 110m
3/ m
2Drop to 70m
3/ m
2, negative pressure drops to 8KPa from 14KPa, even littler, and effect is very good.
Claims (3)
1, a kind of homogeneous agglomerate sintering method is characterized in that:
A, sintered material carry out twice igniting after finishing cloth on the sinter machine, preheat igniting for the bed of material for the first time, and the preheating igniting temperature is bed of material fuel combustion igniting for the second time smaller or equal to 900 ℃, and the combustion ignition temperature is controlled at 1000-1150 ℃;
B, in the sintering whole process of sintered material, its underpart exhausting adopts be force wind in the air channel in mixed flow form mobile exhausting mode;
C, in the sintering whole process of sintered material, adopt lower negative pressure, little air quantity operation;
D, sintered material also cool off under these conditions after twice igniting and promptly obtain qualified finished product of the present invention.
2, a kind of homogeneous agglomerate agglomerating plant, it includes the transmission chain belt, distributor, pallet, wind chamber and blower fan, distributor is arranged on the top of the corresponding head that transmits chain belt, each pallet is covered with whole transmission chain belt, being positioned at each pallet that transmits the chain belt top is the operation pallet, the below for the running pallet, the lower position of corresponding each operation pallet is equipped with the fixed wind chamber on frame, each wind chamber is connected with the main wind pumping channle that links to each other with blower fan by exhausting arm separately, it is characterized in that, position be right after distributor above transmitting chain belt after is provided with hot spot firearm and point of ignition firearm successively, in each wind chamber, be provided with full frame obstructing instrument, make that the wind in each wind chamber enters main wind pumping channle with the mixed flow form.
3,, it is characterized in that described buffering obstructing instrument adopts the whirlwind impeller, or adopt choked flow grid or choked flow wall construction by the described homogeneous agglomerate agglomerating plant of claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112242 CN1271022A (en) | 2000-04-28 | 2000-04-28 | Homogeneous agglomerate sintering method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112242 CN1271022A (en) | 2000-04-28 | 2000-04-28 | Homogeneous agglomerate sintering method and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN1271022A true CN1271022A (en) | 2000-10-25 |
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|---|---|---|---|
| CN 00112242 Pending CN1271022A (en) | 2000-04-28 | 2000-04-28 | Homogeneous agglomerate sintering method and equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300366B (en) * | 2005-10-31 | 2011-01-05 | 杰富意钢铁株式会社 | Method for producing sintered ore and sintering machine |
| CN103114199A (en) * | 2013-03-12 | 2013-05-22 | 攀钢集团攀枝花钢钒有限公司 | Starting-up production method of sintering machine |
| CN103836645A (en) * | 2014-03-20 | 2014-06-04 | 莱芜钢铁集团有限公司 | Sintering ignition method with low gas unit consumption |
| CN105628866A (en) * | 2014-12-01 | 2016-06-01 | 鞍钢股份有限公司 | Device and method for detecting sintering homogeneity degree |
| CN106350665A (en) * | 2016-09-12 | 2017-01-25 | 鞍钢股份有限公司 | Ultra-thick material layer sintering method adopting presintering and capable of reducing sintering return ore rate |
| CN106350664A (en) * | 2016-09-12 | 2017-01-25 | 鞍钢股份有限公司 | Method for judging sintering end point of upper layer of super-thick material layer by adopting presintering |
| CN107261840A (en) * | 2017-06-13 | 2017-10-20 | 武汉悟拓科技有限公司 | Sintering flue-gas denitration process based on sintering hot returning ore catalysis |
| CN107805706A (en) * | 2017-11-16 | 2018-03-16 | 武汉科技大学 | A kind of agglomeration for iron mine igniting and cooling device and method |
-
2000
- 2000-04-28 CN CN 00112242 patent/CN1271022A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300366B (en) * | 2005-10-31 | 2011-01-05 | 杰富意钢铁株式会社 | Method for producing sintered ore and sintering machine |
| CN103114199A (en) * | 2013-03-12 | 2013-05-22 | 攀钢集团攀枝花钢钒有限公司 | Starting-up production method of sintering machine |
| CN103114199B (en) * | 2013-03-12 | 2014-10-29 | 攀钢集团攀枝花钢钒有限公司 | Starting-up production method of sintering machine |
| CN103836645A (en) * | 2014-03-20 | 2014-06-04 | 莱芜钢铁集团有限公司 | Sintering ignition method with low gas unit consumption |
| CN105628866A (en) * | 2014-12-01 | 2016-06-01 | 鞍钢股份有限公司 | Device and method for detecting sintering homogeneity degree |
| CN106350665A (en) * | 2016-09-12 | 2017-01-25 | 鞍钢股份有限公司 | Ultra-thick material layer sintering method adopting presintering and capable of reducing sintering return ore rate |
| CN106350664A (en) * | 2016-09-12 | 2017-01-25 | 鞍钢股份有限公司 | Method for judging sintering end point of upper layer of super-thick material layer by adopting presintering |
| CN106350665B (en) * | 2016-09-12 | 2018-12-04 | 鞍钢股份有限公司 | Ultra-thick material layer sintering method adopting presintering and capable of reducing sintering return ore rate |
| CN107261840A (en) * | 2017-06-13 | 2017-10-20 | 武汉悟拓科技有限公司 | Sintering flue-gas denitration process based on sintering hot returning ore catalysis |
| CN107261840B (en) * | 2017-06-13 | 2020-06-23 | 武汉悟拓科技有限公司 | Sintering flue gas denitration process based on sintering heat return ore catalysis |
| CN107805706A (en) * | 2017-11-16 | 2018-03-16 | 武汉科技大学 | A kind of agglomeration for iron mine igniting and cooling device and method |
| CN107805706B (en) * | 2017-11-16 | 2019-03-26 | 武汉科技大学 | A kind of igniting of agglomeration for iron mine and cooling device and method |
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