CN101749936B - Coal burning alumina silicon slag sintering furnace - Google Patents
Coal burning alumina silicon slag sintering furnace Download PDFInfo
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- CN101749936B CN101749936B CN2008102290982A CN200810229098A CN101749936B CN 101749936 B CN101749936 B CN 101749936B CN 2008102290982 A CN2008102290982 A CN 2008102290982A CN 200810229098 A CN200810229098 A CN 200810229098A CN 101749936 B CN101749936 B CN 101749936B
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- silicon slag
- sintering furnace
- coal burning
- slag sintering
- alumina silicon
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Abstract
The invention discloses a silicon slag sintering system in the field of alumina production, in particular to a coal burning alumina silicon slag sintering furnace. The structure of the coal burning alumina silicon slag sintering furnace is as follows: a pulverized coal flat-flame burner and a flat-flame burner brick are arranged at the middle part of a furnace body, wherein a burner port of the pulverized coal flat-flame burner is fixed in the flat-flame burner brick, a burner pulverized coal inlet is formed at the pulverized coal flat-flame burner, the burner pulverized coal inlet is connected with a pipeline pulverized coal inlet through a pulverized coal conveying pipeline; a lining is arranged at the inside of the furnace body, and a sintered material discharge pipe is arranged at the bottom part of the furnace body. The coal burning alumina silicon slag sintering furnace has the advantages that: compared with the use of generator gas, the cost is reduced by 50-60 percent; the coal burning alumina silicon slag sintering furnace saves the investment and the corresponding occupied space of a generator gas station; the coal burning alumina silicon slag sintering furnace is conductive to improving the alumina silicon slag sintering temperature, improving the silicon slag sintering quality and the yield and simultaneously improving the dissolution rate of alumina in the silicon slag sintered material; and the coal burning alumina silicon slag sintering furnace improves the popularization value of the technology and is in line with the recycling economy principle of energy conservation and emission reduction.
Description
Technical field
The present invention relates to the white residue sintering system in alumina producing field, particularly relate to a kind of coal burning alumina silicon slag sintering furnace.
Background technology
Adopting sintering process to produce in the process of aluminium oxide, produce a large amount of white residues, still contain more aluminium oxide and alkali composition in these white residues.In order fully to extract the useful composition in the white residue, traditional production technology processing method is that white residue is returned the sintering oven feed system, and adds in the sintering oven sintering once more after the aluminum oxide ore mixing of materials again.
Existing alumina silicon slag sintering furnace is to adopt producer gas to act as a fuel, and producer gas sprays into the stove internal combustion by being located at the gas burner on the border, alumina silicon slag sintering furnace bottom, provides the white residue sintering required heat energy.The silicon slag sintering furnace of this heat energy source, shortcoming with following several respects: 1, owing to the producer gas cost as secondary energy sources exceeds 3～4 times than the fine coal cost with calorific value, the energy cost height that has caused the white residue sintering process makes the energy-conservation money that do not save of this cover alumina silicon slag sintering system; 2, because the alumina silicon slag sintering system size of capacity is big, need to supply with a large amount of producer gases and keep system's operation, this just need will expend certain floor space and considerable investment for system sets up a fairly large gas station; 3, because producer gas belongs to fuel of lower heating value, and theoretical temperature combustion is low, therefore cause the sintering temperature of silicon slag sintering furnace lower, directly influenced the white residue sintering quality, reduced the digesting efficiency of alumina of sintering feed, promptly reduced the production capacity of system; 4, owing to above reason, greatly limit this and had applying of clear superiority technology, hinder sintering process and produced the alumina technology development of technology.
Summary of the invention
The invention provides a kind of coal burning alumina silicon slag sintering furnace in order to solve the problems of the technologies described above, purpose is to solve the high problem of alumina silicon slag sintering furnace fuel cost, improves grade, ingredient stability that keeps going into the kiln material that enters the sintering oven ore materials and the sintering feed output capacity that improves sintering oven.
Be achieved in that a kind of coal burning alumina silicon slag sintering furnace for reaching above-mentioned purpose the present invention, its structure is as follows: be provided with fine coal flat-flame burner and flat flame burner brick in body of heater, fine coal flat-flame burner port is fixed in the flat flame burner brick, the fine coal flat-flame burner is provided with burner fine coal inlet, and burner fine coal inlet is connected with pipeline fine coal inlet by the fine coal conveyance conduit; The inboard of body of heater is provided with liner, is provided with the sintering feed discharge nozzle in the bottom of body of heater.
Described upper of furnace body is a cylindrical shape, and the bottom is taper.
Described body of heater is to constitute with the steel construction that is arranged on the outside by inboard again liner is set.
Described liner is made of the warming plate in outer field heat insulating block, intermediate layer and the fire-resistant working lining of nexine.
Describedly be welded with lining anchoring element at steel construction inner surface cloth, anchoring piece is arranged in the liner.
Described anchoring piece arrangement pitch size range is 100～400mm.
Described anchoring piece height is less than the thickness of stove liner.
The dimension difference scope of the thickness of described anchoring piece height and liner is 10～100mm.
Described fine coal flat-flame burner be provided with burner secondary wind inlet and, burner secondary wind inlet is connected with the secondary air channel road.
Be provided with pre-hot blast outlet stool between described burner secondary wind inlet and the secondary air channel road.
Described secondary air channel road is provided with the pre-warm-air pipe of secondary road inlet.
The quantity of described fine coal outlet stool and pre-hot blast outlet stool is 3-20.
The length of flame scope of described fine coal flat-flame burner is 0.5～2m.
The flame diameter scope of described fine coal flat-flame burner is 0.5～3m.
The bottom of described body of heater is provided with tertiary air orifice.
Described tertiary air orifice is connected with the tertiary air pipeline.
Be provided with pre-hot blast outlet stool between described tertiary air orifice and the tertiary air pipeline three times.
Described tertiary air pipeline is provided with pre-warm-air pipe road inlet three times.
The quantity of described three pre-hot blast outlet stools is 3-12.
Described fine coal flat-flame burner and flat flame burner brick are arranged on the middle part of body of heater.
Described fine coal flat-flame burner is arranged in the form of a ring along body of heater.
Described flat flame burner brick equates with the thickness of furnace lining.
The present invention has the following advantages: 1, adopt fine coal as burning, its comprehensive production cost will be than adopting producer gas to reduce by 50～60%.2, because the rotary kiln of alumina by sintering production line all is furnished with the fine coal system of processing, and coal burning alumina silicon slag sintering furnace does not need newly-built fine coal system of processing, and the investment and the corresponding occupation of land of having saved gas producer gas station.3, adopt fine coal as the white residue sintering fuel, help improving the alumina silicon slag sintering temperature, improve white residue sintering quality and output, improve the digesting efficiency of alumina of white residue sintering feed simultaneously.4, cheap energy consumption cost adds efficient heat utilization performance, more highlights the technological merit of described white residue sintering system, has improved the promotional value of this technology.5, the recycling economy principle that meets energy-saving and emission-reduction.
Description of drawings
Fig. 1 is a facade sectional structure schematic diagram of the present invention.
Fig. 2 is that fine coal flat-flame burner of the present invention is arranged schematic diagram.
Fig. 3 is a tertiary air pipeline schematic diagram of the present invention.
Fig. 4 is a stove liner anchoring schematic diagram of the present invention.
Among the figure, 1, body of heater; 2, steel construction; 3, anchoring piece; 4, heat insulating block; 5, warming plate; 6, fire-resistant working lining; 7, fine coal flat-flame burner; 8, flat flame burner brick; 9, fine coal conveyance conduit; 10, secondary air channel road; 11, burner fine coal inlet; 12, burner secondary wind inlet; 13, tertiary air orifice; 14, tertiary air pipeline; 15, pipeline fine coal inlet; 16, the pre-warm-air pipe of secondary road inlet; 17, three pre-warm-air pipe road inlets; 18, waste gas outlet; 19, sintering feed discharge nozzle; 20, fine coal outlet stool; 21, pre-hot blast outlet stool; 22, three pre-hot blast outlet stools.
The specific embodiment
Below embodiments of the invention are described in detail in conjunction with the accompanying drawings, but protection scope of the present invention is not limit by embodiment.
Shown in Fig. 1-4, a kind of coal burning alumina silicon slag sintering furnace of the present invention, comprise body of heater 1, be provided with fine coal flat-flame burner 7 and flat flame burner brick 8 at the middle part of body of heater 1, fine coal flat-flame burner 7 is arranged in the form of a ring along body of heater 1, fine coal flat-flame burner 7 ports are fixed in the flat flame burner brick 8, flat flame burner brick 8 equates with the thickness of body of heater 1 liner, fine coal flat-flame burner 7 is provided with burner fine coal inlet 11, burner fine coal inlet 11 is connected with pipeline fine coal inlet 15 by fine coal conveyance conduit 9, pipeline fine coal inlet 15 is connected with the conveyance conduit at fine coal preparation station, acts as a fuel and a wind source; The outside of body of heater 1 is a steel construction 2, the inboard of body of heater 1 is provided with liner, liner is by outer field heat insulating block 4, the warming plate 5 in intermediate layer and the fire-resistant working lining of nexine 6 constitute, be close to the light heat insulation material that lays on steel construction 2 inner surfaces to reduce the temperature of stove outer surface, reduce the radiation loss of stove, refractory material working lining 6 guarantees stove operate as normal under the hot conditions of strong wearing and tearing, in liner, be provided with anchoring piece 3, be welded with a plurality of lining anchoring elements 3 by certain apart from cloth at steel construction 2 inner surfaces, solid in order to draw by heat insulating block 4, the stove liner that warming plate 5 and fire-resistant working lining 6 are formed, anchoring piece 3 arrangement pitch size ranges are 100～400mm, anchoring piece 2 height are less than the thickness of stove liner, and anchoring piece 2 height are 10～100mm with the dimension difference scope of the thickness of liner; Be provided with sintering feed discharge nozzle 19 in the bottom of body of heater 1, body of heater 1 top is cylindrical shape, and the bottom is taper; Fine coal flat-flame burner 7 is provided with burner secondary wind inlet 12, burner secondary wind inlet 12 is connected with secondary air channel road 10, be provided with fine coal outlet stool 20 between burner fine coal inlet 11 and the fine coal conveyance conduit 9, be provided with pre-hot blast outlet stool 21 between burner secondary wind inlet 12 and the secondary air channel road 10, secondary air channel road 10 is provided with the pre-warm-air pipe of secondary road inlet 16, the quantity of fine coal outlet stool 20 and pre-hot blast outlet stool 21 is 3-20, the length of flame scope of fine coal flat-flame burner 7 is 0.5～2m, and the flame diameter scope is 0.5～3m; The bottom of body of heater 1 is provided with tertiary air orifice 13, tertiary air orifice 13 is connected with tertiary air pipeline 14, be provided with pre-hot blast outlet stool 22 between tertiary air orifice 13 and the tertiary air pipeline 14 three times, the quantity that tertiary air pipeline 14 is provided with 17, three pre-hot blast outlet stools 22 of three pre-warm-air pipe road inlets is 3-12.Secondary air channel road 10 and tertiary air pipeline 14 are looped around the outside of body of heater.Pre-hot blast through the cyclone processing, connect by the pre-warm-air pipe of the secondary road inlet 16 in pre-hot blast total pipeline and secondary air channel road 10, three pre-warm-air pipe road inlets 17 of tertiary air pipeline 14, as stove two, tertiary air source, carry certain heat two, tertiary air, enter in the stove from above-mentioned different passage, realized the recycling of stove waste heat.
The high-temp waste gas that produces in the coal burning alumina silicon slag sintering furnace, by being located at the waste gas outlet 18 on body of heater 1 top, enter upper level device drying tower, become the origin of heat of drying tower, fall into white residue particle in the stove from drying tower, behind the high temperature combustion zone sintering at coal burning alumina silicon slag sintering furnace middle part, by being located at the sintering feed discharge nozzle 19 of stove bottom, enter the pneumatic conveyance conduit and the multistage cyclone cooling device of system, be discharged to the discharging point of system.
Aborning, start a plurality of fine coal flat-flame burners of annular configuration, combustion zone in stove forms the high temperate zone with certain altitude, drying, preheating in the drying tower on stove top and the white residue grain of growing up, when falling by this high temperate zone, finish its sintering process and fall into the U type pipeline that is connected with lower furnace, under the effect of high-speed wind power, be transported to the discharging point.The fine coal flat-flame burner is that the matured product structure of professional production factory is not described in detail.
Claims (22)
1. coal burning alumina silicon slag sintering furnace, comprise body of heater, it is characterized in that in body of heater, being provided with fine coal flat-flame burner and flat flame burner brick, fine coal flat-flame burner port is fixed in the flat flame burner brick, the fine coal flat-flame burner is provided with burner fine coal inlet, and burner fine coal inlet is connected with pipeline fine coal inlet by the fine coal conveyance conduit; The inboard of body of heater is provided with liner, is provided with the sintering feed discharge nozzle in the bottom of body of heater.
2. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described upper of furnace body is a cylindrical shape, and the bottom is taper.
3. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described body of heater is to constitute with the steel construction that is arranged on the outside by being arranged on inboard liner.
4. coal burning alumina silicon slag sintering furnace according to claim 3 is characterized in that described liner is made of the warming plate in outer field heat insulating block, intermediate layer and the fire-resistant working lining of nexine.
5. coal burning alumina silicon slag sintering furnace according to claim 3 is characterized in that the inner surface cloth of described steel construction is welded with lining anchoring element, and anchoring piece is arranged in the liner.
6. coal burning alumina silicon slag sintering furnace according to claim 5 is characterized in that described anchoring piece arrangement pitch size range is 100～400mm.
7. according to claim 5 or 6 described coal burning alumina silicon slag sintering furnaces, it is characterized in that the thickness of described anchoring piece height less than the stove liner.
8. coal burning alumina silicon slag sintering furnace according to claim 7, the dimension difference scope that it is characterized in that the thickness of described anchoring piece height and liner is 10～100mm.
9. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described fine coal flat-flame burner is provided with burner secondary wind inlet, and burner secondary wind inlet is connected with the secondary air channel road.
10. coal burning alumina silicon slag sintering furnace according to claim 9 is characterized in that being provided with pre-hot blast outlet stool between described burner secondary wind inlet and the secondary air channel road.
11. coal burning alumina silicon slag sintering furnace according to claim 10 is characterized in that described secondary air channel road is provided with the pre-warm-air pipe of secondary road inlet.
12. coal burning alumina silicon slag sintering furnace according to claim 10, the quantity that it is characterized in that described pre-hot blast outlet stool are 3-20.
13. coal burning alumina silicon slag sintering furnace according to claim 1, the length of flame scope that it is characterized in that described fine coal flat-flame burner is 0.5～2m.
14. according to claim 1 or 13 described coal burning alumina silicon slag sintering furnaces, the flame diameter scope that it is characterized in that described fine coal flat-flame burner is 0.5～3m.
15. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that the bottom of described body of heater is provided with tertiary air orifice.
16. coal burning alumina silicon slag sintering furnace according to claim 15 is characterized in that described tertiary air orifice is connected with the tertiary air pipeline.
17. coal burning alumina silicon slag sintering furnace according to claim 16 is characterized in that being provided with between described tertiary air orifice and the tertiary air pipeline three times pre-hot blast outlet stool.
18. coal burning alumina silicon slag sintering furnace according to claim 17 is characterized in that described tertiary air pipeline is provided with pre-warm-air pipe road inlet three times.
19. coal burning alumina silicon slag sintering furnace according to claim 18, the quantity that it is characterized in that described three pre-hot blast outlet stools are 3-12.
20. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described fine coal flat-flame burner and flat flame burner brick are arranged on the middle part of body of heater.
21. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described fine coal flat-flame burner arranges in the form of a ring along body of heater.
22. coal burning alumina silicon slag sintering furnace according to claim 1 is characterized in that described flat flame burner brick equates with the thickness of furnace lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290982A CN101749936B (en) | 2008-11-27 | 2008-11-27 | Coal burning alumina silicon slag sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290982A CN101749936B (en) | 2008-11-27 | 2008-11-27 | Coal burning alumina silicon slag sintering furnace |
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| Publication Number | Publication Date |
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| CN101749936A CN101749936A (en) | 2010-06-23 |
| CN101749936B true CN101749936B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102290982A Expired - Fee Related CN101749936B (en) | 2008-11-27 | 2008-11-27 | Coal burning alumina silicon slag sintering furnace |
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| CN113154869A (en) * | 2021-04-08 | 2021-07-23 | 刘发光 | Tabular corundum sintering system |
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| GB1272014A (en) * | 1968-06-12 | 1972-04-26 | Nat Dust Collector Corp | Method and apparatus for controlling fume and dust emissions from cupola furnaces and the like |
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN2554493Y (en) * | 2002-07-23 | 2003-06-04 | 芜湖市汉光工业炉设备有限公司 | Self-heat-storage, preheating type sintering igniter |
| CN101077782A (en) * | 2007-06-19 | 2007-11-28 | 沈阳铝镁设计研究院 | White residue chamotte exsolution technique and device in aluminum oxide production |
| CN101157470A (en) * | 2007-09-27 | 2008-04-09 | 河南省泰隆科技开发应用有限公司 | Material feeding and sintering method for alumina clinker kiln |
| CN201314776Y (en) * | 2008-12-02 | 2009-09-23 | 沈阳铝镁设计研究院 | Silicon residue sintering furnace |
-
2008
- 2008-11-27 CN CN2008102290982A patent/CN101749936B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1272014A (en) * | 1968-06-12 | 1972-04-26 | Nat Dust Collector Corp | Method and apparatus for controlling fume and dust emissions from cupola furnaces and the like |
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN2554493Y (en) * | 2002-07-23 | 2003-06-04 | 芜湖市汉光工业炉设备有限公司 | Self-heat-storage, preheating type sintering igniter |
| CN101077782A (en) * | 2007-06-19 | 2007-11-28 | 沈阳铝镁设计研究院 | White residue chamotte exsolution technique and device in aluminum oxide production |
| CN101157470A (en) * | 2007-09-27 | 2008-04-09 | 河南省泰隆科技开发应用有限公司 | Material feeding and sintering method for alumina clinker kiln |
| CN201314776Y (en) * | 2008-12-02 | 2009-09-23 | 沈阳铝镁设计研究院 | Silicon residue sintering furnace |
Non-Patent Citations (2)
| Title |
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| JP昭59-144338U 1984.09.27 |
| JP特开平11-322406A 1999.11.24 |
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