CN109210950A - A kind of chain grate machine - Google Patents
A kind of chain grate machine Download PDFInfo
- Publication number
- CN109210950A CN109210950A CN201810880292.0A CN201810880292A CN109210950A CN 109210950 A CN109210950 A CN 109210950A CN 201810880292 A CN201810880292 A CN 201810880292A CN 109210950 A CN109210950 A CN 109210950A
- Authority
- CN
- China
- Prior art keywords
- chain grate
- grate machine
- flue gas
- preheating section
- support plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to pellet processing technique fields, disclose a kind of chain grate machine, comprising: chain grate machine main body and heating structure；The preheating section top of the chain grate machine main body is arranged in the heating structure, heats pelletizing baking flue gas.Chain grate machine provided by the invention can promote its temperature, to promote preheating temperature, effectively promote dry bulb intensity, without being crushed in rotary kiln by heating pelletizing baking flue gas.
Description
Technical field
The present invention relates to pellet processing technique field, in particular to a kind of chain grate machine.
Background technique
Pellet is one of main furnace charge of blast furnace ironmaking, and chain grate machine is the important equipment for producing pellet.But with original
Expect the diversification of structure, bloodstone ratio increases in raw material or with addition of containing magnesium or containing after calcium flux, dry bulb intensity is decreased obviously, ball
Group is easily broken after entering rotary kiln, leads to ring formation of rotary kiln, influences normally production and pellet quality.
Summary of the invention
The present invention provides a kind of chain grate machine, and the pellet strength for solving processing in chain grate machine in the prior art is low, easily broken
The technical issues of.
In order to solve the above technical problems, the present invention provides a kind of chain grate machines, comprising:
The preheating section of the chain grate machine main body is arranged in the heating structure, heats pelletizing baking flue gas.
Further, the chain grate machine further include: flue gas temperature measuring equipment；
The flue gas temperature measuring equipment setting is in the preheating pars infrasegmentalis, the top of pellet resettlement area, monitoring pelletizing roasting
Burn the temperature of flue gas.
Further, the flue gas temperature measuring equipment includes: thermocouple and temperature display meter；
In the preheating pars infrasegmentalis, the top of the pellet resettlement area monitors pellet roasting for the thermocouple setting
The temperature of flue gas；
The temperature display meter is connected with the thermocouple, the temperature of real-time display pellet roasting flue gas.
Further, the heating device uses electric heater；
The electric heater is fixed on the preheating section top.
Further, the electric heater uses resistance heater, and the fin heats pipe of the resistance heater is arranged
The preheating section upper area, in the movement routine of the pellet roasting flue gas.
Further, the heating device includes: fuel gas pipeline and burner；
The fuel gas pipeline is connected with the burner, to the burner delivery of fuel gas；
The burner is fixed on the preheating section top, and the combustion gas of burning, and heats the pellet roasting flue gas.
Further, the chain grate machine further include: high temperature resistant support plate and high temperature resistant ball；
Through-hole is opened up in the high temperature resistant support plate, and is fixed in the middle part of the preheating section, positioned at the top of the castor item；
The high temperature resistant ball paving is dispersed in the high temperature resistant support plate, forms flow of flue gas gap path.
Further, the high temperature resistant ball uses corundum ball.
Further, heat-resisting bracket is provided on the preheating section, the heat-resisting support plate is shelved on the heat-resisting bracket
On.
Further, there are gaps between the heat-resisting support plate and the preheating section side wall of the chain grate machine main body；
The heat-resisting support plate edge is provided with guardrail, and corundum ball is stopped to fall off.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The chain grate machine provided in the embodiment of the present application is used for heat balls by the way that heating structure is arranged on the top of preheating section
Group's baking flue gas, to promote its maturing temperature, for increasing for bloodstone ratio or with addition of after containing magnesium or containing calcium flux
Pelletizing promotes preheating temperature, so that dry bulb intensity is promoted, the defect being crushed after being avoided that into rotary kiln.
Detailed description of the invention
Fig. 1 is the structure top view of chain grate machine preheating section provided in an embodiment of the present invention；
Fig. 2 is the structural front view of chain grate machine preheating section provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application solves the pellet strength processed in chain grate machine in the prior art by providing a kind of chain grate machine
It is low, breakable technical problem.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of chain grate machine, comprising: chain grate machine main body and heating structure.
The top of the preheating section 1 of the chain grate machine main body is arranged in the heating structure, heats pelletizing baking flue gas, thus
The preheating temperature to pelletizing is promoted, the intensity of pelletizing is promoted.And the pelletizing realization for adapting to various complicated raw materials or kind can
The preheating temperature adjustment leaned on, so that adaptable maturing temperature is all had for all kinds of pelletizings, to realize that stable product is strong
Degree.
Referring to fig. 2, in order to guarantee the reliability of preheating temperature, the chain grate machine further include: flue gas temperature measuring equipment 14；It is described
The lower part of the preheating section 1 is arranged in flue gas temperature measuring equipment 14, positioned at the top of castor item 12, specifically, is located at pellet and pacifies
The top in region is set, the temperature for the pellet roasting flue gas being applied on pelletizing is monitored, to realize the monitoring of temperature, promotes preheating
Reliability.
In general, the flue gas temperature measuring equipment 14 includes: thermocouple and temperature display meter；The thermocouple setting
In the lower part of the preheating section 1, the top of castor item 12 monitors the temperature for the pellet roasting flue gas being applied on pelletizing；The temperature
Degree display instrument is connected with the thermocouple, the temperature of real-time display pellet roasting flue gas.
That is, preheating section space is divided into three area of space of upper, middle and lower, pellet roasting flue gas is flowed from above to below
Agglomerates；Heating device setting heats the temperature of pelletizing baking flue gas in upper area, and then thermocouple is arranged at middle part
Region on the lower side, i.e., as close as possible to castor item, to detect the pellet roasting flue gas that the temperature being applied on pelletizing tends towards stability
Temperature, to promote preheating section temperature control precision.
In general, according to the mode of heat temperature raising, the structure that heating device can be selected is more；In the present embodiment, institute
Stating heating device can be used electric heater；The electric heater is fixed on the top of the preheating section 1.
Specifically, the electric heater uses resistance heater, and the fin heats pipe of the resistance heater is arranged
The preheating section upper area, in the movement routine of the pellet roasting flue gas, thus when pellet roasting flue gas passes through
Heating process, and heating process clean and effective are realized by way of heat exchange.
The fin heats pipe being uniformly arranged uniformly is arranged, and be can be realized and is evenly heated.
Certainly, the heating device can also be by the way of combustion heating, that is, the heating device includes: fuel gas conduit
Road and burner.The fuel gas pipeline is connected with the burner, to the burner delivery of fuel gas；The burner is fixed on described pre-
The top of hot arc 1, and the combustion gas of burning, heat the pellet roasting flue gas.
In general, it is evenly heated to realize, settable multiple burners are evenly arranged in the top of preheating section 1, phase
The fuel gas pipeline answered is also provided with suitable quantity, to maintain stable flow.Specifically, the first burner group 6 of setting cooperates the
One fuel gas pipeline 5 and the second burner group 9 cooperate the second fuel gas pipeline 8 to be uniformly arranged on 1 top of preheating section.
Pelletizing baking flue gas is heated by fuel gas buring.In general, the first burner group 6 and the second burner group 9 are symmetrically set
It sets, respectively comprising two, perhaps three also or more burners, realization are evenly heated again.
In order to be accurately controlled the effect of heating, first flow control valve 7 can be set on first fuel gas pipeline 5,
Second flow control valve 10 is set on second fuel gas pipeline 8.
In general, when heating, the temperature of heating device can be set previously according to the raw material or type of pelletizing, and
The corresponding relationship of the detected value of flue-gas temperature monitoring device, consequently facilitating operator's manual control gas flow.
A field controller can certainly be set, the thermocouple is separately connected by the way of automatically controlling
And the first flow control valve 7 and the second flow control valve 10, form closed loop feedback control structure.That is, supervising in real time
The temperature for surveying pellet roasting flue gas controls the first flow control valve 7 and described second when temperature is lower than preset temperature value
Flow control valve 10 acts, and promotes aperture, increases gas flow, promotes heating temperature；Alternatively, when temperature is higher than preset temperature value
When, the first flow control valve 7 and the second flow control valve 10 movement are controlled, aperture is reduced, reduces gas flow, drop
Low heating temperature.
Referring to fig. 2, the chain grate machine further include: high temperature resistant support plate 3 and high temperature resistant ball 13；The high temperature resistant support plate
Through-hole 4 is opened up on 3, and is fixed on the middle part of the preheating section 1, positioned at the top of the castor item 12.
The paving of high temperature resistant ball 13 is dispersed in the high temperature resistant support plate 3, forms flow of flue gas gap path, also, institute
It states high temperature resistant ball 13 and is uniformly spread using multilayer and dissipated, so that irregular gap is formed, when the exhaust fan of that 12 lower section guides ball
It, under the action of negative pressure, being capable of 13 formation multiply cigarettes of high temperature resistant ball described in the scattered multilayer of paving when group's baking flue gas preheated pellets
Gas, while realizing evenly dispersed, additionally it is possible to avoid the burning to combustion gas at burner from impacting, guarantee to stablize burning, avoid
Combustion gas is attracted at castor item 12, burns castor item 12.
In general, corundum ball resistant to high temperature, or other heat-resisting material spheres can be used in the high temperature resistant ball 13.
Certainly, high temperature resistant ball 13 can be the sphere of rule, be also possible to irregular, it is only necessary to guarantee to form stable gap
?.
Similar, the high temperature resistant support plate 3 generally uses steel plate；Or other high temperature resistant plate bodys.
Further, heat-resisting bracket 2 is provided on the preheating section 1, the heat-resisting support plate 3 is shelved on the heat-resisting branch
On frame 2；Realize flexibly handling, it is convenient for safeguarding.
Further, there are gaps between the side wall of the preheating section 1 of the heat-resisting support plate 3 and the chain grate machine main body；Institute
It states heat-resisting 3 edge of support plate and is provided with guardrail 11, corundum ball is stopped to fall off.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The chain grate machine provided in the embodiment of the present application is used for heat balls by the way that heating structure is arranged on the top of preheating section
Group's baking flue gas, to promote its maturing temperature, for increasing for bloodstone ratio or with addition of after containing magnesium or containing calcium flux
Pelletizing promotes preheating temperature, so that dry bulb intensity is promoted, the defect being crushed after being avoided that into rotary kiln.
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 (10)
1. a kind of chain grate machine characterized by comprising chain grate machine main body and heating structure；
The preheating section of the chain grate machine main body is arranged in the heating structure, heats pelletizing baking flue gas.
2. chain grate machine as described in claim 1, which is characterized in that the chain grate machine further include: flue gas temperature measuring equipment；
In the preheating pars infrasegmentalis, the top of pellet resettlement area monitors pellet roasting cigarette for the flue gas temperature measuring equipment setting
The temperature of gas.
3. chain grate machine as claimed in claim 2, which is characterized in that the flue gas temperature measuring equipment includes: thermocouple and temperature
Display instrument；
In the preheating pars infrasegmentalis, the top of the pellet resettlement area monitors pellet roasting flue gas for the thermocouple setting
Temperature；
The temperature display meter is connected with the thermocouple, the temperature of real-time display pellet roasting flue gas.
4. chain grate machine as claimed in any one of claims 1 to 3, which is characterized in that the heating device uses electric heater；
The electric heater is fixed on the preheating section top.
5. chain grate machine as claimed in claim 4, it is characterised in that: the electric heater uses resistance heater, the resistance
The fin heats pipe of heater is arranged in the preheating section upper area, in the movement routine of the pellet roasting flue gas.
6. chain grate machine as claimed in any one of claims 1 to 3, which is characterized in that the heating device include: fuel gas pipeline with
And burner；
The fuel gas pipeline is connected with the burner, to the burner delivery of fuel gas；
The burner is fixed on the preheating section top, and the combustion gas of burning, and heats the pellet roasting flue gas.
7. chain grate machine as claimed in claim 6, which is characterized in that the chain grate machine further include: high temperature resistant support plate and resistance to
High temperature ball；
Through-hole is opened up in the high temperature resistant support plate, and is fixed in the middle part of the preheating section, positioned at the top of the castor item；
The high temperature resistant ball paving is dispersed in the high temperature resistant support plate, forms flow of flue gas gap path.
8. chain grate machine as claimed in claim 7, it is characterised in that: the high temperature resistant ball uses corundum ball.
9. chain grate machine as claimed in claim 8, it is characterised in that: heat-resisting bracket is provided on the preheating section, it is described heat-resisting
Support plate is shelved on the heat-resisting bracket.
10. chain grate machine as claimed in claim 9, it is characterised in that: the heat-resisting support plate is pre- with the chain grate machine main body
There are gaps between hot arc side wall；
The heat-resisting support plate edge is provided with guardrail, and corundum ball is stopped to fall off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810880292.0A CN109210950B (en) | 2018-08-03 | 2018-08-03 | Chain grate machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810880292.0A CN109210950B (en) | 2018-08-03 | 2018-08-03 | Chain grate machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109210950A true CN109210950A (en) | 2019-01-15 |
| CN109210950B CN109210950B (en) | 2021-02-19 |
Family
ID=64987452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810880292.0A Active CN109210950B (en) | 2018-08-03 | 2018-08-03 | Chain grate machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109210950B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643837A (en) * | 2009-06-26 | 2010-02-10 | 中冶长天国际工程有限责任公司 | Pre-heating device and pre-heating method of sulfate slag pellet ore |
| CN101650126A (en) * | 2009-06-26 | 2010-02-17 | 中冶长天国际工程有限责任公司 | Grate, pellet preparation device and green pellet preheating method |
| CN206103687U (en) * | 2016-09-14 | 2017-04-19 | 陕西富兴环保科技有限公司 | Automatic change energy -concerving and environment -protective SOx/NOx control dust collecting equipment |
| CN206454460U (en) * | 2016-12-31 | 2017-09-01 | 江苏博际环境工程科技有限公司 | The gas cleaning of wet type unsteady flow and downstriker wet electrostatic flue gas minimum discharge device |
| CN207371352U (en) * | 2017-06-09 | 2018-05-18 | 中国联合工程有限公司 | SCR denitration ammoniates and even flow field structure |
| CN108332562A (en) * | 2018-03-27 | 2018-07-27 | 中冶北方（大连）工程技术有限公司 | Grate preheating section concurrent heating system |
-
2018
- 2018-08-03 CN CN201810880292.0A patent/CN109210950B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643837A (en) * | 2009-06-26 | 2010-02-10 | 中冶长天国际工程有限责任公司 | Pre-heating device and pre-heating method of sulfate slag pellet ore |
| CN101650126A (en) * | 2009-06-26 | 2010-02-17 | 中冶长天国际工程有限责任公司 | Grate, pellet preparation device and green pellet preheating method |
| CN206103687U (en) * | 2016-09-14 | 2017-04-19 | 陕西富兴环保科技有限公司 | Automatic change energy -concerving and environment -protective SOx/NOx control dust collecting equipment |
| CN206454460U (en) * | 2016-12-31 | 2017-09-01 | 江苏博际环境工程科技有限公司 | The gas cleaning of wet type unsteady flow and downstriker wet electrostatic flue gas minimum discharge device |
| CN207371352U (en) * | 2017-06-09 | 2018-05-18 | 中国联合工程有限公司 | SCR denitration ammoniates and even flow field structure |
| CN108332562A (en) * | 2018-03-27 | 2018-07-27 | 中冶北方（大连）工程技术有限公司 | Grate preheating section concurrent heating system |
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| Publication number | Publication date |
|---|---|
| CN109210950B (en) | 2021-02-19 |
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