CN105091576A - Magnetizing roasting self-heating balancing device and method for iron ore tunnel kiln - Google Patents
Magnetizing roasting self-heating balancing device and method for iron ore tunnel kiln Download PDFInfo
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- CN105091576A CN105091576A CN201510576572.9A CN201510576572A CN105091576A CN 105091576 A CN105091576 A CN 105091576A CN 201510576572 A CN201510576572 A CN 201510576572A CN 105091576 A CN105091576 A CN 105091576A
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Abstract
The invention discloses a magnetizing roasting self-heating balancing device and method for an iron ore tunnel kiln. A heat-accumulating type heat exchanger is arranged outside a tunnel kiln heating reduction zone. A high-temperature smoke inlet of the heat-accumulating type heat exchanger is connected with a smoke exhaust port of the tunnel kiln heating reduction zone. A heating reduction zone smoke exhauster is arranged at a smoke outlet of the heat-accumulating type heat exchanger. An air blower is arranged at a cold air inlet of the heat-accumulating type heat exchanger. A hot air outlet of the heat-accumulating type heat exchanger is connected with a hot wind pass-in channel arranged on the side wall of the tunnel kiln heating reduction zone through a hot wind pipeline. According to the magnetizing roasting self-heating balancing device and method for the iron ore tunnel kiln, the ratio of the quantity of exhaust smoke exhausted out of a kiln feeding end to the quantity of exhaust smoke exhausted out of the heating reduction zone is adjusted, so that the smoke exhaust temperature at the kiln feeding end of the tunnel kiln and the heat loss due to the fact that heat is taken away by the smoke are reduced; in addition, material heating with coal as fuel is achieved when the tunnel kiln does not use externally supplied gas fuel, and the smoke exhaust temperature at the smoke outlet is reduced below 250 EDG C at the same time; the energy utilization rate is increased and unit cost of iron ore magnetizing roasting is reduced.
Description
Technical field
The invention belongs to mineral and metallurgical technology field, be specifically related to a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device and method.
Background technology
In iron ore tunnel cave magnetizing roast process, tunnel cave heats fuel used and is generally gaseous fuel, when tunnel cave uses in the area that gaseous fuel lacks, because coal gas supply problem is comparatively difficult to resolve certainly, limit applying of iron ore tunnel cave magnetizing roast.But when tunnel cave adopts producer gas as fuel, generally need auxiliary construction gas generator.Gas generator take coal as raw material, and be producer gas by coal by the method migration of Pintsch process and gasification, producer gas resupplies tunnel cave and utilizes.Because tunnel cave is in fuel use procedure, there is the two times transfer of the energy, cause coal resources utilization rate not high, unit roasted ore energy consumption is higher, also limit applying of iron ore tunnel cave magnetizing roast.
In iron ore tunnel cave magnetizing roast process, general at iron ore surface coverage one deck capping coal, in high-temperature gasification process, certain heat is needed according to capping coal, the sintering temperature of iron ore on kiln car can be made to remain in certain scope, thus the high temperature bond of kiln car upper strata iron ore can be prevented and cross juvenescence.Capping coal is in the heating and temperature-rise period of tunnel cave, and when capping coal temperature is 300-700 DEG C, the volatile matter in capping coal is separated out in a large number, and volatile matter burns after entering into furnace cavity as fuel; When capping coal temperature is more than 600 DEG C, the water vapour in coal and furnace gas or CO
2generating gasification is reacted, and also can provide fuel to furnace cavity.Meanwhile, iron ore also will produce a part of water vapour or CO in reduction process
2, this part water vapour or CO
2up flowing from bed of material inside, when through the capping coal bed of material, the carbon in capping coal also can made to produce gasification and provide fuel to furnace cavity.Due to the thinner thickness of capping coal, the gaseous fuel that capping Coal Gasification provides to furnace cavity is less.
At present, when tunnel cave carries out iron ore magnetizing roast, the flue gas generally accounting for more than 80% is discharged from entering kiln end, the exhaust gas volumn entering kiln end is larger, its exhaust gas temperature is generally more than 600 DEG C, and higher exhaust gas temperature has taken away a large amount of heats, and the coal gas causing the volatilization of capping coal or gasification to produce can not meet the needs of tunnel cave heating material, be generally and make iron ore can carry out good roasting in tunnel cave, need inside and outside tunnel cave for a part of heating gas.
In sum, the subject matter that the magnetizing roast of iron ore tunnel cave exists has: the heating of (1) tunnel cave needs to use gaseous fuel; (2) to enter kiln end exhaust gas temperature higher for tunnel cave, and the heat loss that flue gas is taken away is comparatively large, causes iron ore roasting energy consumption higher.
Summary of the invention
The object of the invention is to solve the technical problem existed in prior art, providing that a kind of structure is simple, fuel availability is high, iron ore magnetizing roast unit consumption of fuel is low and not needing to use the iron ore tunnel cave magnetizing roast autothermal equilibrium device of outer supplied gas fuel heated material.
Another object of the present invention is to provide a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method.
In order to achieve the above object, the present invention is by the following technical solutions: a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device, the exhaust opening place entering kiln end at tunnel cave is provided with into kiln end induced-draft fan, heat regenerator is provided with in the outside of tunnel cave heat reduction band, the high-temperature flue gas import of described heat regenerator is connected with the exhaust opening of tunnel cave heat reduction band, the smoke outlet of described heat regenerator is provided with heat reduction band induced-draft fan, the inlet of cold air place of described heat regenerator is provided with air blast, the hot air outlet of described heat regenerator feeds passage by hot blast pipeline with the hot blast be arranged on tunnel cave heat reduction band sidewall and is connected.
Further, described tunnel cave heat reduction band both sides sidewall is respectively arranged along its length 5-8 hot blast and feed passage.
Further, described hot blast feeds on passage and is respectively equipped with flow control valve.
Further, two heat storage tanks in described heat regenerator adopt honeycomb body structure.
A kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method, the method comprises the following steps:
Before A, kiln car enter tunnel cave, the iron ore on kiln car and reduction coal mix surface lay capping coal as tunnel cave fuel heating iron ore stone and reduction coal;
When B, iron ore roasting, the exhaust gas volumn that the exhaust gas volumn of discharging into kiln end is reduced to 20-30%, heat reduction band is discharged is made to bring up to 70-80% by regulating the discharge capacity into kiln end induced-draft fan and heat reduction band induced-draft fan;
C, reclaimed the waste heat of the high-temperature flue gas of discharging in heat reduction band by heat regenerator, enter the combustion air of heat regenerator for preheating from inlet of cold air, feed passage by hot blast after the air after preheating enters into hot blast pipeline from hot air outlet and enter in tunnel cave heat reduction band;
D, to be controlled different hot blast by flow control valve and feed air mass flow after the preheating fed in passage, gaseous fuel diverse location in tunnel cave that in tunnel cave, capping Coal Gasification produces is burnt, realizes the adjustment of tunnel cave heat reduction band along tunnel cave length direction Temperature Distribution.
Further, the capping coal thickness that in described steps A, iron ore surface is laid is 5-15mm and is adjusted the kiln temperature of tunnel cave heat reduction band by the thickness of adjustment capping coal, and kiln temperature is controlled at 1050-1100 DEG C.
Further, the capping coal granularity that in described steps A, iron ore surface is laid is 5-18mm and is distributed along the heating load of tunnel cave length direction by the Task-size Controlling tunnel cave heat reduction band of selection capping coal.
Further, the capping coal that in described steps A, iron ore surface is laid is the coal that carbon residue after high-temperature roasting or volatility are lower.
Further, in described steps A, reduction coal is volatile matter more than 40% coal and the low-volatile coal modified coal by the proportions of 1:3-5, and wherein low volatile coal is blue charcoal or anthracite.
Further, in described step C, reclaimed the waste heat of the 950-1050 DEG C of high-temperature flue gas of discharging in heat reduction band by heat regenerator, make that combustion air is preheating to more than 850 DEG C from normal temperature, exhanst gas outlet exhaust gas temperature is reduced to less than 250 DEG C.
Hinge structure of the present invention has following beneficial effect:
1, the present invention makes the exhaust gas volumn of discharging into kiln end be reduced to 20-30% by regulating the discharge capacity into kiln end induced-draft fan and heat reduction band induced-draft fan, the exhaust gas volumn that heat reduction band is discharged brings up to 70-80%, reduce tunnel cave and enter the heat loss that the exhaust gas temperature of kiln end and flue gas take away, and adopt heat regenerator to carry out waste heat recovery and warm-up combustion-supporting air to the high-temperature flue gas of discharging in heat reduction band, reach tunnel cave to realize when not using outer supplied gas fuel with coal being that fuel carries out heating material, exhanst gas outlet exhaust gas temperature is reduced to less than 250 DEG C simultaneously, improve the utilization rate of the energy, reduce the unit cost of iron ore magnetizing roast.
2, the present invention is by the thickness of adjustment capping coal, namely adjustment feeds the kiln temperature of the capping coal amount adjustment tunnel cave heat reduction band in tunnel cave, kiln temperature is made to control at 1050-1100 DEG C, simultaneously by selecting the Task-size Controlling tunnel cave heat reduction band of capping coal to distribute along the heating load of tunnel cave length direction, optimize the condition of iron ore magnetizing roast further, at utmost make rational use of resources.; In addition, capping coal of the present invention selects the carbon residue after high-temperature roasting or the lower coal of volatility, and the volatile matter that can effectively reduce in capping coal is separated out in the low temperate zone of tunnel cave, effectively reduces the CO content in smoke that tunnel cave is discharged.
3, the present invention is by air mass flow after the preheating of infeed in control different hot blast infeed passage, gaseous fuel diverse location in tunnel cave that in tunnel cave, capping Coal Gasification produces is burnt, realize the adjustment of tunnel cave heat reduction band along tunnel cave length direction Temperature Distribution, further increase the utilization rate of the energy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral implication of the present invention is as follows: 1, enter kiln end; 2, kiln end induced-draft fan is entered; 3, heat reduction band; 4, heat regenerator; 5, high-temperature flue gas import; 6, exhanst gas outlet; 7, heat reduction band induced-draft fan; 8, inlet of cold air; 9, air blast; 10, hot air outlet; 11, hot blast pipeline; 12, hot blast feeds passage.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device, the exhaust opening place entering kiln end 1 at tunnel cave is provided with into kiln end induced-draft fan 2, heat regenerator 4 is provided with in the outside of tunnel cave heat reduction band 3, two heat storage tanks in heat regenerator 4 adopt high temperature resistant and corrosion resistant honeycomb body structure, in heat regenerator 4, air and flue gas flow respectively in different heat storage tanks, and carry out heat exchange by periodically switching, the high-temperature flue gas import 5 of heat regenerator 4 is connected with the exhaust opening of tunnel cave heat reduction band 3, exhanst gas outlet 6 place of heat regenerator 4 is provided with heat reduction band induced-draft fan 7, inlet of cold air 8 place of heat regenerator 4 is provided with air blast 9, the hot air outlet 10 of heat regenerator 4 feeds passage 12 by hot blast pipeline 11 with 5-8 the hot blast be respectively arranged on the sidewall of tunnel cave heat reduction band 3 both sides and is connected, hot blast feeds on passage 12 and is respectively equipped with flow control valve.
A kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method, the method comprises the following steps:
A, before kiln car enters tunnel cave, it is 5-15mm that iron ore on kiln car and reduction coal mix surface lay a layer thickness, granularity is the capping coal of 5-18mm, reduction coal is volatile matter more than 40% coal and the low-volatile coal modified coal by the proportions of 1:3-5, wherein low volatile coal is blue charcoal or anthracite, capping coal is the coal that carbon residue after high-temperature roasting or volatility are lower, capping coal uses as tunnel cave fuel heating iron ore stone and reduction coal as after the volatilization of tunnel cave heat reduction band or gasification, by the kiln temperature of the thickness adjustment tunnel cave heat reduction band 3 of adjustment capping coal during use, kiln temperature is made to control at 1050-1100 DEG C, also by selecting the Task-size Controlling tunnel cave heat reduction band 3 of capping coal to distribute along the heating load of tunnel cave length direction, when B, iron ore roasting, the exhaust gas volumn that the exhaust gas volumn of discharging into kiln end 1 is reduced to 20-30%, heat reduction band 3 is discharged is made to bring up to 70-80% by regulating the discharge capacity into kiln end induced-draft fan 2 and heat reduction band induced-draft fan 7, C, reclaimed the waste heat of 950-1050 DEG C of high-temperature flue gas of discharging in heat reduction band 3 by heat regenerator 4, enter the combustion air of heat regenerator 4 from inlet of cold air 8 for preheating, make that combustion air is preheating to more than 850 DEG C from normal temperature, exhanst gas outlet 6 exhaust gas temperature is reduced to less than 250 DEG C, feed passage 12 by hot blast after the air after preheating enters into hot blast pipeline 11 from hot air outlet 10 and enter in tunnel cave heat reduction band 3, D, to be controlled different hot blast by flow control valve and feed air mass flow after the preheating fed in passage 12, gaseous fuel diverse location in tunnel cave that in tunnel cave, capping Coal Gasification produces is burnt, realizes the adjustment of tunnel cave heat reduction band 3 along tunnel cave length direction Temperature Distribution.
Claims (10)
1. an iron ore tunnel cave magnetizing roast autothermal equilibrium device, it is characterized in that: the exhaust opening place entering kiln end (1) at tunnel cave is provided with into kiln end induced-draft fan (2), heat regenerator (4) is provided with in the outside of tunnel cave heat reduction band (3), the high-temperature flue gas import (5) of described heat regenerator (4) is connected with the exhaust opening of tunnel cave heat reduction band (3), exhanst gas outlet (6) place of described heat regenerator (4) is provided with heat reduction band induced-draft fan (7), inlet of cold air (8) place of described heat regenerator (4) is provided with air blast (9), the hot air outlet (10) of described heat regenerator (4) feeds passage (12) by hot blast pipeline (11) and the hot blast be arranged on tunnel cave heat reduction band (3) sidewall and is connected.
2. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device according to claim 1, is characterized in that: described tunnel cave heat reduction band (3) both sides sidewall is respectively arranged along its length 5-8 hot blast and feed passage (12).
3. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device according to claim 2, is characterized in that: described hot blast feeds on passage (12) and is respectively equipped with flow control valve.
4. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium device according to claim 1, is characterized in that: two heat storage tanks in described heat regenerator (4) adopt honeycomb body structure.
5. an iron ore tunnel cave magnetizing roast autothermal equilibrium method, is characterized in that the method comprises the following steps:
Before A, kiln car enter tunnel cave, the iron ore on kiln car and reduction coal mix surface lay capping coal as tunnel cave fuel heating iron ore stone and reduction coal;
When B, iron ore roasting, the exhaust gas volumn that the exhaust gas volumn of discharging into kiln end (1) is reduced to 20-30%, heat reduction band (3) is discharged is made to bring up to 70-80% by regulating the discharge capacity into kiln end induced-draft fan (2) and heat reduction band induced-draft fan (7);
C, reclaimed the waste heat of the high-temperature flue gas of discharging in heat reduction band (3) by heat regenerator (4), enter the combustion air of heat regenerator (4) for preheating from inlet of cold air (8), feed passage (12) by hot blast after the air after preheating enters into hot blast pipeline (11) from hot air outlet (10) and enter in tunnel cave heat reduction band (3);
D, to be controlled different hot blast by flow control valve and feed air mass flow after the preheating fed in passage (12), gaseous fuel diverse location in tunnel cave that in tunnel cave, capping Coal Gasification produces is burnt, realizes the adjustment of tunnel cave heat reduction band (3) along tunnel cave length direction Temperature Distribution.
6. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method according to claim 5, it is characterized in that: the capping coal thickness that in described steps A, iron ore surface is laid is 5-15mm and is adjusted the kiln temperature of tunnel cave heat reduction band (3) by the thickness of adjustment capping coal, and kiln temperature is controlled at 1050-1100 DEG C.
7. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method according to claim 5, is characterized in that: the capping coal granularity that in described steps A, iron ore surface is laid is 5-18mm and is distributed along the heating load of tunnel cave length direction by Task-size Controlling tunnel cave heat reduction band (3) of selection capping coal.
8. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method according to claim 5, is characterized in that: the capping coal that in described steps A, iron ore surface is laid is the coal that carbon residue after high-temperature roasting or volatility are lower.
9. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method according to claim 5, it is characterized in that: in described steps A, reduction coal is volatile matter more than 40% coal and the low-volatile coal modified coal by the proportions of 1:3-5, and wherein low volatile coal is blue charcoal or anthracite.
10. a kind of iron ore tunnel cave magnetizing roast autothermal equilibrium method according to claim 5, it is characterized in that: the waste heat being reclaimed the 950-1050 DEG C of high-temperature flue gas of discharging in heat reduction band (3) in described step C by heat regenerator (4), make that combustion air is preheating to more than 850 DEG C from normal temperature, exhanst gas outlet (6) exhaust gas temperature is reduced to less than 250 DEG C.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048211A (en) * | 2016-07-15 | 2016-10-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Reduction roasting process for iron ore rotary kiln |
| CN106854684A (en) * | 2016-12-27 | 2017-06-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | One kind is used for iron ore magnetizing roast tunnel cave and iron ore magnetizing roast method |
| CN108588408A (en) * | 2018-06-15 | 2018-09-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of device and technique of iron oxide red tunnel oven production metallized pellet |
| CN109307431A (en) * | 2018-08-30 | 2019-02-05 | 中国电子科技集团公司第四十八研究所 | A kind of Industrial Stoves of Hybrid Heating |
| CN114002267A (en) * | 2021-11-01 | 2022-02-01 | 广东省特种设备检测研究院潮州检测院 | Method for testing energy efficiency of ceramic gas tunnel kiln |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197920A (en) * | 1997-04-25 | 1998-11-04 | 日本锅炉工业株式会社 | Firing control device and method |
| CN103937921A (en) * | 2014-03-28 | 2014-07-23 | 酒泉钢铁(集团)有限责任公司 | Hierarchical material distribution reduction method for sponge iron tunnel kiln and tunnel kiln applying same |
| CN104004874A (en) * | 2014-06-06 | 2014-08-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Combined direct reduction technology of blast furnace gas ash and refractory low-grade iron ore in tunnel kiln |
| CN104726691A (en) * | 2015-04-03 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Reducing roasting method for powdered iron ores in tunnel kiln |
| CN104745802A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for magnetizing roasting of tunnel kiln of iron ores with particle sizes of 15mm or less than 15mm |
| CN204963558U (en) * | 2015-09-11 | 2016-01-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Iron ore tunnel cave magnetizing roasting self -heating balancing unit |
-
2015
- 2015-09-11 CN CN201510576572.9A patent/CN105091576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197920A (en) * | 1997-04-25 | 1998-11-04 | 日本锅炉工业株式会社 | Firing control device and method |
| CN103937921A (en) * | 2014-03-28 | 2014-07-23 | 酒泉钢铁(集团)有限责任公司 | Hierarchical material distribution reduction method for sponge iron tunnel kiln and tunnel kiln applying same |
| CN104004874A (en) * | 2014-06-06 | 2014-08-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Combined direct reduction technology of blast furnace gas ash and refractory low-grade iron ore in tunnel kiln |
| CN104726691A (en) * | 2015-04-03 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Reducing roasting method for powdered iron ores in tunnel kiln |
| CN104745802A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for magnetizing roasting of tunnel kiln of iron ores with particle sizes of 15mm or less than 15mm |
| CN204963558U (en) * | 2015-09-11 | 2016-01-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Iron ore tunnel cave magnetizing roasting self -heating balancing unit |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048211A (en) * | 2016-07-15 | 2016-10-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Reduction roasting process for iron ore rotary kiln |
| CN106854684A (en) * | 2016-12-27 | 2017-06-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | One kind is used for iron ore magnetizing roast tunnel cave and iron ore magnetizing roast method |
| CN106854684B (en) * | 2016-12-27 | 2018-11-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | One kind being used for iron ore magnetizing roast tunnel oven and iron ore magnetizing roast method |
| CN108588408A (en) * | 2018-06-15 | 2018-09-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of device and technique of iron oxide red tunnel oven production metallized pellet |
| CN108588408B (en) * | 2018-06-15 | 2023-09-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and process for producing metallized pellets by using iron oxide red tunnel kiln |
| CN109307431A (en) * | 2018-08-30 | 2019-02-05 | 中国电子科技集团公司第四十八研究所 | A kind of Industrial Stoves of Hybrid Heating |
| CN109307431B (en) * | 2018-08-30 | 2020-10-27 | 中国电子科技集团公司第四十八研究所 | Mixed heating industrial kiln |
| CN114002267A (en) * | 2021-11-01 | 2022-02-01 | 广东省特种设备检测研究院潮州检测院 | Method for testing energy efficiency of ceramic gas tunnel kiln |
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Application publication date: 20151125 |