CN201694956U - Novel gas-burning shaft kiln - Google Patents
Novel gas-burning shaft kiln Download PDFInfo
- Publication number
- CN201694956U CN201694956U CN2009202707929U CN200920270792U CN201694956U CN 201694956 U CN201694956 U CN 201694956U CN 2009202707929 U CN2009202707929 U CN 2009202707929U CN 200920270792 U CN200920270792 U CN 200920270792U CN 201694956 U CN201694956 U CN 201694956U
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- kiln
- combustion chamber
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Abstract
A novel gas-burning shaft kiln comprises a chimney body, a masonry combustion chamber, an air-cooled combustion beam, a shaft kiln body and a plurality of air pipes. The upper end of the shaft kiln body is provided with a feeding port and the top end of the lower cavity chamber thereof transversely extends into a coal gas inlet pipe from outside. The lower cavity chamber is provided with the masonry combustion chamber. A cold air pipe is arranged at one side of the coal gas inlet pipe and the air-cooled combustion beam is connected in the cold air pipe. The masonry combustion chamber adopts fire-retardant material. The air-cooled combustion beam can be alloy cast iron, alloy inner core and external fire-retardant material, high-aluminum bricks (AL203 content is 60 to 80 percent) and the like. The utility model adopts the novel masonry combustion chamber, the air-cooled combustion beam, preheating combustion air and other structures and is used for firing limestone, lightly roasting dolomite, magnesium mineral and other products. Compared with the traditional mixed kiln and the light roasting kiln, the utility model greatly improves the utilization efficiency of fuel and greatly reduces investment cost when compared with a sleeve kiln and a Fercalx kiln, wherein the lime activity can be more than 350ml.
Description
Technical field
The utility model relates to metallurgy and technical field of refractory materials, relates in particular to a kind of novel gas-burned vertical limekiln.
Background technology
Active lime with metallurgy industry is an example, generally adopts coke to load in mixture kiln type productions such as kiln, vapour burning shaft furnace, sleeve kiln, Fu Kasi kiln, wheat Wurz kiln.Through some facts have proved, compare with common lime, in the production of sintering and steel-making, by with addition of quickened lime, can improve the comprehensive benefit of sintering and steel-making greatly, in steelmaking process, use can reduce the lime unit consumption, shorten the heat, extending furnace lining life, raising adding amount of scrap steel and molten steel recovery rate; Simultaneously, because the ratio of quickened lime is higher than the surface-area gross blow hole, S, P content are low, slag making stable components when making steel-making, and desulfurization phosphorus is thorough, can improve steel product quality, helps smelting variety steel; In sintering, use grade and the agglomerating output to improve agglomerate, so lime more and more is subjected to the attention of metallurgy industry as one of important foundation material of metallurgical industry; Particularly steel-smelting technology accelerate development and reduce cost, the widespread demand of variety steel, add the outlet steel of producing by International Standards Organization, make active lime be able to widespread use in fields such as sintering, hot metal pretreatment, steel-making and external refinings.The production technology of the quickened lime of metallurgy industry develops rapidly in recent years, and the production principle of different kiln type quickened lime stones is basic identical; The characteristics of Fu Kasi kiln are the burning beam structure, and burning beam is across the limestone kiln section, and every burning beam is all by huge, being formed by thermal oil refrigerative rectangle steel case apparatus after prolonging.
The utility model content
At above defective, the purpose of this utility model provide a kind ofly be used for calcined limestone, be combustion medium with coal gas, adopt novel combustion chamber, air-cooled burning beam, the warm-up combustion-supporting air of building by laying bricks or stones, the fuel utilising efficiency that loads in mixture kiln and with light packs kiln with solution is low, problem such as sleeve kiln, Fu Kasi kiln cost of investment are big has improved the efficiency of utilization in limestone kiln and simultaneously applicable to firing products such as light dolomite and light-burned magnesia.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of novel gas-burned vertical limekiln, comprise by chimney stack, build the combustion chamber by laying bricks or stones, air-cooled burning beam, shaft furnace body and some tracheaes are formed, described shaft furnace body upper end offer charging opening and with the vertical chimney stack that is provided with and is communicated with of kiln wall, this shaft furnace chamber body is divided into, following two chamber structures, it extends transversely into gas inlet pipe by the external world in side cavity top down, side cavity is provided with and builds the combustion chamber by laying bricks or stones and have some burner ports under this, be positioned at gas inlet pipe one side cold-air duct and the air-cooled burning beam of its internal cohesion are installed, the heat-eliminating medium that air-cooled burning beam adopts is air or other gaseous cooling medium; Discharge port is offered in the bottom, cooling zone, below of described air-cooled burning beam, the quantity of described air-cooled burning beam is 1 to 4, building the combustion chamber by laying bricks or stones is arranged on and builds by laying bricks or stones in the kiln body and quantity is 1 to 8, its one-sided unrounded number that fires is 3 to 15, and air-cooled burning beam can be cast alloy iron, the inner core alloy is built refractory materials, high-al clay or high alumina brick and Al outward
2O
3Content is 60%-80% and other refractory materials.
The beneficial effect of novel gas-burned vertical limekiln described in the utility model is: can be used for calcined limestone, light dolomite and light-burned magnesia etc., and with coal gas is combustion medium, adopt novel combustion chamber, air-cooled burning beam, preheated-combustion-supporting wind and the coal gas of building by laying bricks or stones to be mixed into the kiln burning, solved that the fuel utilising efficiency that loads in mixture kiln is low, problem such as sleeve kiln and Fu Kasi kiln cost of investment are big, wherein activity of lime can reach more than the 350ml, has improved the efficiency of utilization of gas-burned vertical limekiln simultaneously; Adopt the technology of building new combustion chamber in the kiln body by laying bricks or stones can effectively control and regulate each section temperature in the kiln, improve product quality and yield, reduced fuel consumption simultaneously.
Description of drawings
According to embodiment and accompanying drawing the utility model is described in further detail below.
Fig. 1 is the structural representation of the described novel gas-burned vertical limekiln of the utility model embodiment.
Among the figure:
1, charging opening; 2, chimney stack; 3, build the combustion chamber by laying bricks or stones; 4, burner port; 5, gas inlet pipe; 6, cold-air duct; 7, air-cooled burning beam; 8, discharge port; 9, shaft furnace body; 10, preheating zone; 11, calcining zone; 12, cooling zone.
Embodiment
As shown in Figure 1, novel gas-burned vertical limekiln described in the utility model, comprise by chimney stack 2, build combustion chamber 3 by laying bricks or stones, air-cooled burning beam 7, shaft furnace body 9 and some tracheaes are formed, described shaft furnace body 9 upper ends offer charging opening 1 and with the vertical chimney stack that is provided with and is communicated with 2 of kiln wall, these shaft furnace body 9 inner chambers are divided into, following two chamber structures, it extends transversely into gas inlet pipe 5 by the external world in side cavity top down, side cavity is provided with and builds combustion chamber 3 by laying bricks or stones and have some burner ports 4 under this, is positioned at gas inlet pipe 5 one sides cold-air duct 6 and the air-cooled burning beam 7 of its internal cohesion are installed; Discharge port 8 is offered in 12 bottoms, cooling zone, below of described air-cooled burning beam 7, is divided into preheating zone 10 and combustion zone 11 in the last side cavity of described shaft furnace body 9 from top to bottom.Adopt novel combustion chamber, air-cooled burning beam, preheated-combustion-supporting wind and the coal gas of building by laying bricks or stones to be mixed into the kiln burning, solved that coke loads in mixture that the fuel utilising efficiency of kiln is low, problem such as sleeve kiln and Fu Kasi kiln cost of investment are big, improved the efficiency of utilization of gas-burned vertical limekiln simultaneously; Adopt the technology of building new combustion chamber in the kiln body by laying bricks or stones can effectively control and regulate each section temperature in the kiln, improve product quality and yield, reduced fuel consumption simultaneously.
More than novel gas-burned vertical limekiln described in the utility model, combustion-supporting cold wind enters shaft furnace body 9 by cold-air duct 6 during work, then air-cooled burning beam 7 parts carry out heat exchange and after flowing out shaft furnace body 9 again with gas inlet pipe 5 and be advanced into and build mixing section 3 by laying bricks or stones, again by burner port 4 burning heat supplies in kiln; Inflammable gas and combustion-supporting gas blended position be for building combustion chamber 3 by laying bricks or stones, and do not add burner separately, only establishes burner port 4.The quantity of described air-cooled burning beam 7 is 1 to 4; Building the one-sided unrounded number that fires in combustion chamber 3 (quantity is 1 to 8) by laying bricks or stones is 3 to 15; The optional cast alloy iron of air-cooled burning beam 7 materials, inner core alloy are built refractory materials, high alumina brick (Al outward
2O
3Content is 60%-80%) and other refractory materials.
Claims (7)
1. novel gas-burned vertical limekiln, comprise by chimney stack (2), build combustion chamber (3), air-cooled burning beam (7), shaft furnace body (9) and some tracheaes by laying bricks or stones and form, it is characterized in that: charging opening (1) and chimney stack (2) are offered in described shaft furnace body (9) upper end, side cavity is provided with and builds combustion chamber (3) by laying bricks or stones and have some burner ports (4) under this, is positioned at gas inlet pipe (5) one sides cold-air duct (6) and the air-cooled burning beam of its internal cohesion (7) are installed.
2. novel gas-burned vertical limekiln according to claim 1 is characterized in that: discharge port (8) is offered in the bottom, cooling zone, below (12) of described air-cooled burning beam (7).
3. novel gas-burned vertical limekiln according to claim 1 is characterized in that: the quantity of described air-cooled burning beam (7) is 1 to 4.
4. according to claim 1 or 3 described novel gas-burned vertical limekilns, it is characterized in that: the heat-eliminating medium that described air-cooled burning beam (7) adopts is an air.
5. according to each described novel gas-burned vertical limekiln of claim 1 to 3, it is characterized in that: described air-cooled burning beam (7) can be cast alloy iron, the inner core alloy is built refractory materials outward.
6. novel gas-burned vertical limekiln according to claim 1 is characterized in that: the described combustion chamber (3) of building by laying bricks or stones is arranged in the kiln body and builds by laying bricks or stones, and its quantity is 1 to 8.
7. novel gas-burned vertical limekiln according to claim 1 is characterized in that: the described one-sided quantity that goes out nozzles of building combustion chamber (3) by laying bricks or stones is 3 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202707929U CN201694956U (en) | 2009-11-26 | 2009-11-26 | Novel gas-burning shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202707929U CN201694956U (en) | 2009-11-26 | 2009-11-26 | Novel gas-burning shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201694956U true CN201694956U (en) | 2011-01-05 |
Family
ID=43396197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202707929U Expired - Fee Related CN201694956U (en) | 2009-11-26 | 2009-11-26 | Novel gas-burning shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201694956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019004892A1 (en) * | 2017-06-26 | 2019-01-03 | Fältkalk Ab | A vertical lime kiln |
-
2009
- 2009-11-26 CN CN2009202707929U patent/CN201694956U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019004892A1 (en) * | 2017-06-26 | 2019-01-03 | Fältkalk Ab | A vertical lime kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20111126 |