CN2223833Y - Hot wind and water cooling furnace for smelting iron or steel filings - Google Patents
Hot wind and water cooling furnace for smelting iron or steel filings Download PDFInfo
- Publication number
- CN2223833Y CN2223833Y CN 94235750 CN94235750U CN2223833Y CN 2223833 Y CN2223833 Y CN 2223833Y CN 94235750 CN94235750 CN 94235750 CN 94235750 U CN94235750 U CN 94235750U CN 2223833 Y CN2223833 Y CN 2223833Y
- Authority
- CN
- China
- Prior art keywords
- air
- pipe
- preheating chamber
- pipeline
- heat exchanger
- 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.)
- Expired - Fee Related
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model relates to a hot wind and water cooling furnace for smelting iron or steel filings, which belongs to a cupola which can smelting iron or steel filings. The utility model is characterized in that the utility model is composed of a feed inlet, an air collecting ring, a person pipe, an air guide pipe, a dust remover, an air purification pipe, a coal gas reclamation pipeline, a dust removal pipeline, a combustion pipeline, and a self heat exchange air supply device. The coal gas reclamation pipeline, the dust removal pipeline, and the combustion pipeline are connected to an air preheating chamber orderly. The self heat exchange air supply device is formed by orderly connected a heat exchange pipe arranged in the air preheating chamber, a hot wind pipe, a ring-shaped air manifold, and a water cooling air port to the air blow pipeline of a metallurgical furnace. The metallic charging can totally adopts the bulk steel filings and parts of iron ore.
Description
The utility model relates to a kind of hot blast water cooled steel iron filings metallurgical furnace, belongs to a kind of cupola furnace that can the steel-smelting iron filings.
The iron and steel bits are the waste materials that produce in machining process, raw material as Cast Iron Production, its main application mode is to utilize to have cupola funnel-shaped or the outer overhead system air preheater of stove, smear metal is melted, pour into less demanding simple foundry goods such as regeneration ingot iron or iron pan, because above-mentioned two kinds of air preheaters have mainly utilized the physics heat of furnace gas, and it is very low to the chemical heat utilization rate of furnace gas, cause air preheating temperature low, the metallurgical effect of stove is poor, and burnt consumption is high, the sulfur content of hot metal height, the furnace gas oxidisability at charge door place is strong, and investment is big.
The purpose of this utility model is exactly the weak point that exists at above-mentioned cupola, design a kind of have high wind-warm syndrome, strong reduction, low burnt consumption, cost low, can be continuously in large quantities iron and steel smelting consider and can directly pour into a mould the metallurgical furnace of premium casting to be worth doing.
Of the present utility model being characterised in that: self heat exchange air-supply arrangement that metallurgical furnace is provided with that charge door (4), bell (5), collector ring (6), people's pipe (3), air entraining pipe (2), deduster (17), fresh-air duct (16), air preheating chamber (11), cool air hose (10), heat exchanger tube (13), warm-air pipe (9), annular divide that airduct (7), water cooled tuyere (8) form.Bell jar (5) is housed in the charge door (4), charge door (4) shell lower end is connected with the upper end inner casing of collector ring (6), the upper end of collector ring (6) is connected with the lower end of people's pipe (3), the straight tube side on people's pipe (3) top is connected with the upper end of air entraining pipe (2), the top of the lower end deduster (17) of air entraining pipe (2) is connected, deduster (17) is connected with air preheating chamber (11) by fresh-air duct (16), the inlet of the heat exchanger tube (13) of cool air hose (10) in air preheating chamber (11) bottom and air preheating chamber (11) is connected, the outlet of heat exchanger tube (13) is connected with the inlet of warm-air pipe (9) on air preheating chamber (11) top, the outlet of warm-air pipe (9) divides the top of airduct (7) to be connected with annular, and annular divides the bottom of airduct (7) to be connected with the top of water cooled tuyere (8).
Said people pipe (3) is characterized in that its top is provided with to diffuse valve (1) that the inlet of air entraining pipe (2) is positioned at the below of diffusing valve (1).
Said fresh-air duct (16) is characterized in that being used to connect deduster (17) and air preheating chamber (11), is sequentially with Gas mixing valve (15) and burner (14) in its end that enters air preheating chamber (11), and burner (14) is one or more.
Said air preheating chamber (11) is characterized in that external ground type, and promptly bearing support is not established in the bottom, directly be located on the level ground, in adorn some heat exchanger tubes (13), being shaped as of heat exchanger tube (13) is arc.
Said water cooled tuyere (8) is characterized by a row.
When metallurgical furnace feeds in raw material, be arranged on bell (5) decline that charge door (4) is located, material is fallen in the stove, add material, bell (5) rises, and charge door (4) is sealed.When bell (5) when closing, coal gas enters people's pipe (3) by the collector ring (6) of charge door (4) side-lower in the stove, diffuse valve (1) when in the closed position in pre-portion, coal gas all enters deduster (17) through air entraining pipe (2), arrive burner (14) through fresh-air duct (16) by Gas mixing valve (15) again after the udst separation, lighted at this, in air preheating chamber (11) internal combustion, emit huge heat, coal gas itself the physics heat of carrying in addition is rapidly with the heating of the arc heat exchanger tube (13) in the air preheating chamber (11).Meanwhile, the air that air blast blows out is entered in the arc heat exchanger tube (13) in the air preheating chamber (11) by cool air hose (10), with coal gas strong heat exchange takes place at this, temperature raises gradually, outlet at heat exchanger tube (13) reaches 600---800 ℃ high temperature, along warm-air pipe (9), after annular divides airduct (7) to distribute, enter each water cooled tuyere (8) again.The flue (12) of waste gas after the gas-fired through being positioned at air preheating chamber (11) bottom discharged.
At the blow-on initial stage, for improving furnace temperature and some coal gas rapidly, will diffuse valve (1) to close, allow coal gas all enter air preheating chamber (11) internal combustion from air entraining pipe (2), turn Gas mixing valve (15) simultaneously down.In the blow-on process, can regulate and diffuse valve (1) and Gas mixing valve (15) according to the needs of the working of a furnace and chemical analysis.
The utility model is by recovery, dedusting and throttling stock gas, make it smooth combustion, the chemical heat and the physics heat of coal gas have been made full use of, obtain high wind-warm syndrome, reduce burnt consumption, kept the reducing atmosphere at charge door place, strengthened metallurgical effect, adopt external ground type air preheating chamber simultaneously, reduced the stove cost significantly.Preliminary test proves that wind-warm syndrome can reach 600---800 ℃, tapping temperature 1380---1450 ℃, STRENGTH ON COKE adaptability is strong, and can utilize broken Jiao, than existing cupola joint burnt 20---40%.This stove can carry out 1 according to producing needs---working continuously of 12 weeks.The molten iron of coming out of the stove can pour into a mould 14---No. 22 pig iron, can directly pour into a mould common gray castings again, and can also reduce the part iron ore in addition.
Accompanying drawing is the schematic diagram of hot blast water cooled steel iron filings metallurgical furnace.
Among the figure: (1) diffuses valve, (2) air entraining pipe, (3) people pipe, (4) charge door, (5) bell, (6) collector ring, (7) annular branch airduct, (8) water cooled tuyere, (9) warm-air pipe, (10) cool air hose, (11) air preheating chamber, (12) flue, (13) heat exchanger tube, (14) burner, (15) Gas mixing valve, (16) fresh-air duct, (17) deduster
Claims (5)
1, a kind of hot blast water cooled steel iron filings metallurgical furnace, it is characterized in that this stove is provided with charge door (4), bell (5), collector ring (6), the people manages (3), air entraining pipe (2), deduster (17), fresh-air duct (16), air preheating chamber (11), cool air hose (10), heat exchanger tube (13), warm-air pipe (9), annular is divided airduct (7), self heat exchange air-supply arrangement that water cooled tuyere (8) is formed, bell jar (5) is housed in the charge door (4), charge door (4) shell lower end is connected with the upper end inner casing of collector ring (6), the upper end of collector ring (6) is connected with the lower end of people's pipe (3), the straight tube side on people's pipe (3) top is connected with the upper end of air entraining pipe (2), the lower end of air entraining pipe (2) is connected with the top of deduster (17), deduster (17) is connected with air preheating chamber (11) by fresh-air duct (16), the inlet of the heat exchanger tube (13) of cool air hose (10) in air preheating chamber (11) bottom and air preheating chamber (11) is connected, the outlet of heat exchanger tube (13) is connected with the inlet of warm-air pipe (9) on air preheating chamber (11) top, the outlet of warm-air pipe (9) divides the top of airduct (7) to be connected with annular, and annular divides the bottom of airduct (7) to be connected with the top of water cooled tuyere (8).
2, metallurgical furnace according to claim 1 is characterized in that the people manages (3) top and is provided with and diffuses valve (1), and the inlet of air entraining pipe (2) is positioned at the below of diffusing valve (1).
3, metallurgical furnace according to claim 1, it is characterized in that being provided with fresh-air duct (16) between deduster (17) and the air preheating chamber (11), the end that enters air preheating chamber (11) at fresh-air duct (16) is sequentially with Gas mixing valve (15) and burner (14), and burner (14) is one or more.
4, metallurgical furnace according to claim 1 is characterized in that air preheating chamber (11) is external ground type, interior dress heat exchanger tube (13), and being shaped as of heat exchanger tube (13) is arc.
5, metallurgical furnace according to claim 1 is characterized in that water cooled tuyere (8) is a row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235750 CN2223833Y (en) | 1994-11-16 | 1994-11-16 | Hot wind and water cooling furnace for smelting iron or steel filings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235750 CN2223833Y (en) | 1994-11-16 | 1994-11-16 | Hot wind and water cooling furnace for smelting iron or steel filings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2223833Y true CN2223833Y (en) | 1996-04-03 |
Family
ID=33843932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94235750 Expired - Fee Related CN2223833Y (en) | 1994-11-16 | 1994-11-16 | Hot wind and water cooling furnace for smelting iron or steel filings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2223833Y (en) |
-
1994
- 1994-11-16 CN CN 94235750 patent/CN2223833Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |