CN101871723A - Internal combustion-type magnetic roasting shaft furnace - Google Patents
Internal combustion-type magnetic roasting shaft furnace Download PDFInfo
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- CN101871723A CN101871723A CN 201010194427 CN201010194427A CN101871723A CN 101871723 A CN101871723 A CN 101871723A CN 201010194427 CN201010194427 CN 201010194427 CN 201010194427 A CN201010194427 A CN 201010194427A CN 101871723 A CN101871723 A CN 101871723A
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Abstract
The invention discloses an internal combustion-type magnetic roasting shaft furnace, the structure thereof is as follows: a combustion beam is arranged in a furnace body, an air suction beam is arranged above the combustion beam, a reduction beam is arranged below the combustion beam, the bottom of the furnace body is provided with a discharge device; as for the combustion beam, a main combustion mechanism is arranged on the upper part of the inner cavity of a beam body, and an auxiliary combustion mechanism is arranged on the lower part of the inner cavity of the beam body; the main combustion mechanism consists of a main air passage, a main air supply pipeline and a plurality of main nozzles arranged on the main air supply pipeline; the auxiliary combustion mechanism consists of an auxiliary air passage, an auxiliary air supply pipeline and a plurality of auxiliary nozzles arranged on the auxiliary air supply pipeline; a baffle plate is arranged in a shell, the main combustion mechanism and the auxiliary mechanism are respectively arranged at the two sides of the baffle plate; the air passages and the air supply passages of the main combustion mechanism and the auxiliary mechanism are respectively provided with an independent flow control mechanism; and a cooling jacket is arranged outside the beam body. The invention also can multiply the effective volume of the furnace, thus effectively improving the production efficiency.
Description
Technical field
The present invention relates to the industrial furnace field, specifically a kind of internal combustion-type magnetic roasting shaft furnace.
Background technology
At present the domestic shaft furnace that is used for magnetizing roast is that periphery at stove is provided with some coal gas burners, the shaft furnace of this structure, because its thermal source is inwardly to spread from periphery, therefore temperature inequality in the stove not only causes product quality to be affected, and the knot kiln very easily occurs.On the other hand, the body of heater restricted volume has also influenced working ability, causes production efficiency low.
Summary of the invention
Purpose of the present invention will provide a kind of uniform internal combustion-type magnetic roasting shaft furnace of temperature in the stove that makes exactly, with improve production efficiency and product quality.
The present invention is achieved in that in the body of heater that this internal combustion-type magnetic roasting shaft furnace is and is provided with burning beam, is provided with air-breathing beam above burning beam, is provided with the reduction beam below burning beam, is provided with drawing mechanism at bottom of furnace body; Described burning beam is to be provided with main combustion mechanism on the top of beam intracoelomic cavity, is provided with auxilliary combustion mechanism in the bottom of beam intracoelomic cavity; Described main combustion mechanism is made up of main air duct, main supply air line and the some main burner that is opened on the described main supply air line, and described auxilliary combustion mechanism is made up of auxilliary air channel and auxilliary supply air line and the some auxilliary burner that is opened on the auxilliary supply air line; Be provided with the dividing plate that inner chamber is separated into two area of space in the burning beam housing, described main combustion mechanism and auxilliary combustion mechanism lay respectively at the both sides of described dividing plate; The air channel of main combustion mechanism and auxilliary combustion mechanism and supply air line are provided with independently flow control mechanism separately; Outside at the beam body is provided with coolant jacket.
Internal combustion-type magnetic roasting shaft furnace of the present invention is provided with burning beam in body of heater, be provided with main combustion mechanism that is positioned at the upper strata and the auxilliary combustion mechanism that is positioned at lower floor along burning beam, and dividing plate separates the two, forms upper and lower two area of space.The air channel of main combustion mechanism and auxilliary combustion mechanism and supply air line are provided with independently flow control mechanism separately, therefore, its air-fuel ratio can be distinguished independent control, thereby can make auxilliary combustion mechanism institute air distribution amount only be satisfied with fuel usefulness on fire, main combustion mechanism institute air distribution amount is greater than the required air-fuel ratio of fuel, configuration by this air-fuel ratio, the auxilliary combustion mechanism unburned fuel of lower floor rises to the main combustion mechanism on upper strata under the suction of air-breathing beam, thereby forms the combustion zone in the full wafer zone between the main combustion mechanism on the auxilliary combustion mechanism of lower floor and upper strata.
The present invention can make flame evenly be covered with periphery in burning beam, the heat distribution is more reasonable on the calcining cross section, thermal radiation capability significantly improves, not only directly reduced required fuel quantity, and then a series of indexs such as hear rate, the required power consumption of air feed of whole stove have been reduced, and, because the heat distribution is more reasonable on the feasible calcining cross section, the quality of calcination product is improved.
This built-in combustion beam that the present invention is designed makes that the distribution of temperature on the body of heater cross section is very even, not only can improve energy utilization rate, and the quality of calcination product is improved.And control the maximum temperature of burning and then the bulk temperature of control kiln by the control air-fuel ratio, and can effectively avoid bonding between the iron ore, thus the generation of avoiding tying the kiln incident.
Upper of furnace body of the present invention is provided with air-breathing beam, and air-breathing beam top is the material storage zone.Air-breathing beam is to being the preheating zone between the burning beam on upper strata, utilizes the furnace gas preheating material after the high-temperature calcination.Upper strata burner beam to zone between lower floor's burner beam is a calcining zone, and raw material evenly is heated to reduction temperature.Lower floor's burner beam is the reduction cooled region to reducing between the beam.
The present invention reduces beam and is provided with the outlet of a plurality of reducing gases, guarantees the uniformity of furnace reduction atmosphere.When iron ore enters zone of reduction after calcining zone is heated to 700-850 ℃, reducing gas fully contacts with iron ore and carries out reduction reaction, with finished product reduction and be cooled to about 400 ℃, finish the magnetizing roast process of iron ore, effectively stoped and crossed the generation of reducing and owing to reduce, guaranteed the quality of magnetizing roast.
The air-breathing beam that the present invention is designed guarantees that gas stream in the stove is evenly distributed with smooth and easy, keeps best combustion effect, minimum fuel consumption and the fastest reduction rate.Remaining reducing gas carries out combustion reaction along being advanced into burning zone on the body of heater with the excess air that adds in the reducing zone, makes the energy make full use of.The present invention adopts the built-in combustion beam to carry out the internal combustion heating, built-in reduction beam sprays into reducing gas and reduces, make body of heater on length and width two-dimensional directional, be expanded into possibility simultaneously, thereby the dischargeable capacity of body of heater is multiplied, and then effectively enhance productivity.
Under technique scheme, the present invention can realize like this:
In the described burning beam, the auxilliary air channel institute wind supply quantity in the auxilliary combustion mechanism only is satisfied with auxilliary fuel that supply air line supplies usefulness on fire; The main air duct institute wind supply quantity of main combustion mechanism is greater than the required air-fuel ratio of fuel gas buring that main supply air line supplies.
The main burner of described burning beam is opened on the two side of main supply air line, and described auxilliary burner is opened on the diapire of auxilliary supply air line.
Have main port on the housing of burning beam relative with main burner and coolant jacket, have auxilliary port on the housing of burning beam relative with auxilliary burner and coolant jacket, auxilliary burner stretches in the auxilliary port.
Be evenly equipped with in the shaft furnace and be divided into upper and lower two-layer some burning beams.
Described reduction beam upper edge beam body is uniform to have some reducing gases outlets.
Described air-breathing beam upper edge beam body is uniform to have some air intake ducts, has air entry on each air intake duct.
Description of drawings
Fig. 1 is the structural representation of internal combustion-type magnetic roasting shaft furnace of the present invention.
Fig. 2 is the structural representation of burning beam.
The specific embodiment
Shown in Figure 1, body of heater is accurate rectangle, is provided with upper and lower two-layer burning beam 3 in the body of heater 1.Be provided with air-breathing beam 4 above burning beam, air-breathing beam is positioned at upper of furnace body, has some air intake ducts in that air-breathing beam 4 upper edge beam bodies are uniform, has air entry on each air intake duct.Be provided with reduction beam 2 below burning beam, the reduction beam is positioned at the body of heater bottom, has some reducing gases outlets in that reduction beam 2 upper edge beam bodies are uniform.Be provided with drawing mechanism at bottom of furnace body, drawing mechanism comprises roll-type ore discharge machine 10, the drag conveyor 11 that is arranged in the water seal.
In the body of heater outer setting booster fan 9 is arranged, in reduction beam 2 and burning beam 3, to provide combustion gas.
Shown in Figure 2, described burning beam is to be provided with main combustion mechanism on the top of beam intracoelomic cavity, is provided with auxilliary combustion mechanism in the bottom of beam intracoelomic cavity; Described main combustion mechanism is made up of main air duct 15, main supply air line 12 and the some main burner 14 that is opened on the described main supply air line, and described auxilliary combustion mechanism is made up of auxilliary air channel 17 and auxilliary supply air line 8 and the some auxilliary burner 6 that is opened on the auxilliary supply air line; Be provided with the dividing plate 16 that the housing inner chamber is separated into two area of space in housing, described main combustion mechanism and auxilliary combustion mechanism lay respectively at the both sides of described dividing plate; The air channel of main combustion mechanism and auxilliary combustion mechanism and supply air line are provided with independently flow control mechanism separately; Be provided with coolant jacket 7 in the outside of beam body.Charge into cooling fluid in the cavity that forms between described coolant jacket and the burning beam housing.Make cooling fluid continuous cycle operation in chuck by pressure circulation system, fully absorb the temperature that heat reduces this burner.Guarantee this double-deck beam type combination burner in shaft furnace not by scaling loss and be in optimum Working.In the described burning beam, the auxilliary air channel institute wind supply quantity in the auxilliary combustion mechanism only is satisfied with auxilliary fuel that supply air line supplies usefulness on fire; The main air duct institute wind supply quantity of main combustion mechanism is greater than the required air-fuel ratio of fuel gas buring that main supply air line supplies.The main burner 14 of described burning beam is opened on the two side of main supply air line 12, and described auxilliary burner 6 is opened on the diapire of auxilliary supply air line 8.Described burning beam has main port 13 on the housing of burning beam relative with main burner 14 and coolant jacket, have auxilliary port 5 on the housing of burning beam relative with auxilliary burner 6 and coolant jacket, and auxilliary burner 6 stretches in the auxilliary port 5.Adopt this structure, the ejection of being convenient to combustion gas, air with meet, can reach better combustion efficiency.
Claims (7)
1. an internal combustion-type magnetic roasting shaft furnace is characterized in that being provided with burning beam (3) in body of heater (1), is provided with air-breathing beam (4) above burning beam, is provided with reduction beam (2) below burning beam, is provided with drawing mechanism at bottom of furnace body; Described burning beam is to be provided with main combustion mechanism on the top of beam intracoelomic cavity, is provided with auxilliary combustion mechanism in the bottom of beam intracoelomic cavity; Described main combustion mechanism is made up of main air duct (15), main supply air line (12) and the some main burner (14) that is opened on the described main supply air line, and described auxilliary combustion mechanism is by auxilliary air channel (17) and auxilliary supply air line (8) and be opened in the some auxilliary burner (6) of assisting on the supply air line and form; Be provided with the dividing plate (16) that inner chamber is separated into two area of space in the burning beam housing, described main combustion mechanism and auxilliary combustion mechanism lay respectively at the both sides of described dividing plate; The air channel of main combustion mechanism and auxilliary combustion mechanism and supply air line are provided with independently flow control mechanism separately; Be provided with coolant jacket (7) in the outside of beam body.
2. internal combustion-type magnetic roasting shaft furnace according to claim 1 is characterized in that in the described burning beam, and the auxilliary air channel institute wind supply quantity in the auxilliary combustion mechanism only is satisfied with auxilliary fuel that supply air line supplies usefulness on fire; The main air duct institute wind supply quantity of main combustion mechanism is greater than the required air-fuel ratio of fuel gas buring that main supply air line supplies.
3. internal combustion-type magnetic roasting shaft furnace according to claim 2 is characterized in that the main burner (14) of described burning beam is opened on the two side of main supply air line (12), and described auxilliary burner (6) is opened on the diapire of auxilliary supply air line (8).
4. internal combustion-type magnetic roasting shaft furnace according to claim 3, it is characterized in that on the housing of burning beam relative and coolant jacket, having main port (13) with main burner (14), have auxilliary port (5) on the housing of burning beam relative with auxilliary burner (6) and coolant jacket, auxilliary burner (6) stretches in the auxilliary port (5).
5. according to claim 1,2,3 or 4 described internal combustion-type magnetic roasting shaft furnaces, it is characterized in that being evenly equipped with in the shaft furnace and be divided into upper and lower two-layer some burning beams (3).
6. internal combustion-type magnetic roasting shaft furnace according to claim 1 is characterized in that described reduction beam (2) upper edge beam body is uniform to have an outlet of some reducing gases.
7. according to the described internal combustion-type magnetic roasting shaft furnace of claim 1, it is characterized in that described air-breathing beam (4) upper edge beam body is uniform to have some air intake ducts, have air entry on each air intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010194427 CN101871723A (en) | 2010-06-08 | 2010-06-08 | Internal combustion-type magnetic roasting shaft furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010194427 CN101871723A (en) | 2010-06-08 | 2010-06-08 | Internal combustion-type magnetic roasting shaft furnace |
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| CN101871723A true CN101871723A (en) | 2010-10-27 |
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| CN 201010194427 Pending CN101871723A (en) | 2010-06-08 | 2010-06-08 | Internal combustion-type magnetic roasting shaft furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130429A (en) * | 2011-11-25 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Middle combustion beam for shaft furnace |
| CN109798517A (en) * | 2018-12-26 | 2019-05-24 | 贵州博宏实业有限责任公司 | A kind of modified process units of active lime shaft kiln gas burning |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210786U (en) * | 1987-11-25 | 1988-08-17 | 冶金部鞍山黑色冶金矿山设计研究院 | Magnetized Roasting Shaft Furnace |
| CN2802400Y (en) * | 2005-04-14 | 2006-08-02 | 苏州北岛能源技术有限公司 | Vertical internal combustion pelletizing shaft furnace |
| CN1975251A (en) * | 2005-11-29 | 2007-06-06 | 特鲁兹·弗卡斯责任有限公司 | Burner beam for a burning kiln for lump material |
| CN201258298Y (en) * | 2008-07-25 | 2009-06-17 | 贾会平 | Kiln for burning lime |
| CN201330225Y (en) * | 2009-01-15 | 2009-10-21 | 贾会平 | Burning girder for limekiln |
| CN101696803A (en) * | 2009-10-30 | 2010-04-21 | 贾会平 | T-shaped burning beam |
-
2010
- 2010-06-08 CN CN 201010194427 patent/CN101871723A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210786U (en) * | 1987-11-25 | 1988-08-17 | 冶金部鞍山黑色冶金矿山设计研究院 | Magnetized Roasting Shaft Furnace |
| CN2802400Y (en) * | 2005-04-14 | 2006-08-02 | 苏州北岛能源技术有限公司 | Vertical internal combustion pelletizing shaft furnace |
| CN1975251A (en) * | 2005-11-29 | 2007-06-06 | 特鲁兹·弗卡斯责任有限公司 | Burner beam for a burning kiln for lump material |
| CN201258298Y (en) * | 2008-07-25 | 2009-06-17 | 贾会平 | Kiln for burning lime |
| CN201330225Y (en) * | 2009-01-15 | 2009-10-21 | 贾会平 | Burning girder for limekiln |
| CN101696803A (en) * | 2009-10-30 | 2010-04-21 | 贾会平 | T-shaped burning beam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130429A (en) * | 2011-11-25 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Middle combustion beam for shaft furnace |
| CN109798517A (en) * | 2018-12-26 | 2019-05-24 | 贵州博宏实业有限责任公司 | A kind of modified process units of active lime shaft kiln gas burning |
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Open date: 20101027 |