CN203384434U - Explosion-proof device used for steel slag hot braising - Google Patents
Explosion-proof device used for steel slag hot braising Download PDFInfo
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- CN203384434U CN203384434U CN201320401731.8U CN201320401731U CN203384434U CN 203384434 U CN203384434 U CN 203384434U CN 201320401731 U CN201320401731 U CN 201320401731U CN 203384434 U CN203384434 U CN 203384434U
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- flange
- stewing
- movable tongue
- slag
- outlet
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Abstract
The utility model relates to an explosion-proof device used for steel slag hot braising. The explosion-proof device used for steel slag hot braising comprises a protective cover (1), multiple connecting rods (2) and a flange (3), wherein the protective cover (1) is connected to the flange (3) through the connecting rod (2); an air inlet and outlet hole (6) is formed in the middle of the flange (3); a movable tongue sheet (5) connected to one lateral side of the air inlet and outlet hole (6) through a hinge (4) is arranged at the bottom of the air inlet and outlet hole (6); the movable tongue sheet (5) moves freely in the direction opposite to that of the protective cover within a range having 0-40 degrees with the flange (3) through the hinge (4); when the angle between the movable tongue sheet (5) and the flange (3) is zero degree, the movable tongue sheet (5) matches with the air inlet and outlet hole (6) to seal and cover the air inlet and outlet hole (6). The explosion-proof device used for steel slag hot braising guarantees that a steel slag pulverization technology can be carried out efficiently in a hot braising pool, and realizes relatively high slag iron separation rate.
Description
Technical field
The utility model relates to Ferrous Metallurgy slag circulation comprehensive and utilizes the technical security field, and particularly, the utility model relates to a kind of for the stewing flameproof apparatus of slag heat.
Background technique
The slag efflorescence processes, realizes that slag iron separates, and is that iron and steel enterprise's slag iron resource recycles, and effectively reduces an important step of steel-making cost, and the unstability of slag is also the key issue of restriction slag comprehensive utilization simultaneously.Generally adopt at present the stewing treatment technology of slag heat that molten steel slag is tumbled in the stewing device of heat, capping, water spray.Water heat slag produces steam, makes slag generation chemical reaction, and free calcium oxide volumetric expansion the efflorescence of breaking under the temperature variation effect of stress make slag stable.The stewing pond of heat is the obturator with pressure, in order to keep certain pressure, timely release when pressure reaches 1.6Kg simultaneously, it is mainly to have taked following two kinds of methods at present: method one, lay successively Φ 200, Φ 300, tri-blow-off lines of Φ 200mm along low 0.8m place on pool wall one side, pressure control table and electric gate valve are housed respectively on each pipeline, when vapor pressure reaches certain pressure by pressure gauge, electric control valve is automatically opened a large amount of saturated vapours of generation is got rid of to (similar chimney) by main pipeline; Method two, install 4 automatic burst-preventing valves in the stewing surrounding of covering, once vapor pressure surpasses 1.6Kg, the rupture pressure disc in the automatic burst-preventing valve will the explosion pressure release.Above two kinds of methods are mainly considered from the pressure aspect, and the stewing device of the heat of current use is improved, and have greatly reduced the quick-fried probability of spray, have obtained good effect, but have not eliminated the quick-fried phenomenon of spray fully.Because the method is main be from physical phenomenon (pressure) aspect defect elimination spray quick-fried, but do not consider the harm because in the stewing decomposition process of heat, chemical reaction brings.
The model utility content
The utility model does not solve the quick-fried phenomenon of spray fully for current existing technical measures, and the stewing mechanism of heat is carried out to profound research, has taked the stewing safety automation flameproof apparatus of a kind of slag heat to solve the quick-fried phenomenon of spray.
The flameproof apparatus hot stewing for slag of the present utility model, comprise protective housing 1, some connecting rods 2 and flange 3, it is characterized in that, described protective housing 1 is connected with flange 3 by connecting rod 2;
Be provided with gas inlet and outlet 6 in the middle of described flange 3, gas inlet and outlet 6 bottoms are provided with a movable tongue 5 and are connected with a side of gas inlet and outlet 6 by loose-leaf 4; Described movable tongue 5 is being freely activity of contrary protective housing direction in 0～40 ° of angular region by loose-leaf 4 with flange 3; When movable tongue 5 and flange 3 are 0 ° of angle, movable tongue 5 matches and capping gas inlet and outlet 6 with gas inlet and outlet 6.
As a kind of improvement of such scheme, high temperature resistant, the etch-proof corrosion resistant plate material that described movable tongue 5 is the about 0.526kg of own wt.
Another kind as such scheme improves, and described connecting rod 2 is connected and fixed at bolt eyelet 7 places and the flange 3 of flange 3.
As another improvement of such scheme, described connecting rod 2 evenly is arranged between protective housing 1 and flange 3.
As another improvement of such scheme, described protective housing 1 can be any shape that can cover below gas inlet and outlet 6 fully, preferably is conical, and the bottom surface diameter is greater than the diameter of flange 3.
In the utility model, as follows about the stewing Analysis on Mechanism of slag heat:
Owing to containing a certain amount of carbon in converter slag, whenever warm sludge, to enter pond too concentrated, perhaps having bulk to enter pond makes carbon superfluous in slag fully not burn, the fetch water steam of a large amount of high concentrations of rear generation of high-temperature steel slag, cause oxygen in the stewing pond of heat to reduce, these have just created condition for the generation of water gas.Because water (H
2(O) oxygen atom and two hydrogen (H) atom are arranged in molecule O), and water one runs into burning hot carbon (C), and oxygen atom (O) has been seized by carbon at once, and result generates CO and H
2, CO and H
2all inflammable gas, industrial such mixed gas " water gas ".
The reaction equation that water gas produces is as follows:
C+H
2o high temperature=CO+H
2(main reaction)
C+2H
2o high temperature=CO
2+ H
2(main side reaction)
Same high temperature is fetched water and can be produced water vapour, and water vapour runs into the above high temperature iron of 600 degree, produces following equation:
3Fe+4H
2o (water vapor)=Fe
3o
4+ 4H
2
The explosion condition of carbon monoxide is: the first, reach explosion limit (content is at 12.55%-74.25%); The second, temperature reaches the point of ignition (2CO+O of carbon monoxide
2=2CO
2it is 650 degree (usually) that condition is lighted point of ignition); The 3rd, there is enough oxygen to supply with burning.
The explosion condition of hydrogen is: hydrogen adds that oxygen (content is at 4%-75%) in the explosion limit scope produces a large amount of water vapour after running into naked light within the short time, makes volume sharply expand, and blasts.
Produce a large amount of high-temperature vapors at the stewing initial stage of heat, because water-vapour density is large, (CO density is 1.25g/L to the inflammable gas density of generation, H
2density 0.0899g/L) all be less than the density of water vapour, float over the top of water vapour, can successfully with row's steam, efflux passage and discharge.Along with the stewing time history of heat, in pond, temperature reduces, steam flow reduces, at this moment the density of combustible gas CO just is greater than the density of water vapour gradually, cause inflammable gas to be deposited in the below of water vapour, if can not discharge in time, will gather certain space in pond, increase along with the combustible gas scale of construction, likely reach the explosion limit scope, along with temperature and pressure in pond reduces, the concentration of oxygen strengthens gradually simultaneously, now as the stewing pond of heat of remaining a small amount of red slag or vicinity in hot stewing pond, turned over the basin operation and run into naked light, very easily blasted.
The utility model is according to the quick-fried mechanism of the stewing spray of slag heat, provide a kind of slag heat stewing automatic explosion-proof device, it meets following the requirement: the one, and the slag efflorescence starting stage, in the stewing pond of heat, steam reaches while being greater than 0.3Kg pressure, the automatic jack-up of this device movable tongue, closed steam effluxes passage, keeps vapor pressure in pond to stablize, and guarantees slag minute-pressure efflorescence.The 2nd, in the stewing pond of heat during vapor pressure lower (being less than 0.3Kg), the movable tongue of its device is opened automatically, pond external body air is inhaled in pond, the inflammable gas produced in slag efflorescence process is discharged outside pond through exhaust duct dilution displacement, fundamentally stop inflammable gas and gathered, met the possibility of naked light detonation; The 3rd, this device adopts flange connection, and the bellows tongue formula structure in hole is opened up at middle part, and tongue piece adopts high temperature resistant, etch-proof corrosion resistant plate, to reach with the vapor pressure effect of automatically holding one's breath.
The utility model can thoroughly be stopped the generation of regularly detonation of nothing in the stewing production process of slag heat, quick-fried spray event, has fundamentally eliminated the employee and has worried all the time at work the unstable psychology of safety.Simultaneously, guarantee the execution steel-making slag powder metallization processes that hot stewing pond can be effective, realized higher slag iron separation rate.
The accompanying drawing explanation
Fig. 1 is of the present utility model for the stewing flameproof apparatus plan view of slag heat.
Fig. 2 is of the present utility model for the stewing flameproof apparatus bottom schematic view of slag heat.
The accompanying drawing sign
1, protective housing 2, connecting rod 3, flange 4, loose-leaf
5, movable tongue 6, gas inlet and outlet 7, bolt eyelet
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in Figure 1-2, the flameproof apparatus hot stewing for slag of the present utility model, comprise protective housing 1, some connecting rods 2 and flange 3, it is characterized in that, described protective housing 1 is connected with flange 3 by connecting rod 2; Be provided with gas inlet and outlet 6 in the middle of described flange 3, gas inlet and outlet 6 bottoms are provided with a movable tongue 5 and are connected with a side of gas inlet and outlet 6 by loose-leaf 4; Described movable tongue 5 is being freely activity of contrary protective housing direction in 0～40 ° of angular region by loose-leaf 4 with flange 3; When movable tongue 5 and flange 3 are 0 ° of angle, movable tongue 5 matches and capping gas inlet and outlet 6 with gas inlet and outlet 6.Above-mentioned movable tongue 5 adopts high temperature resistant, etch-proof corrosion resistant plate material.Described connecting rod 2 is connected and fixed at bolt eyelet 7 places and the flange 3 of flange 3, evenly is arranged between protective housing 1 and flange 3.Described protective housing 1 can be any shape that can cover below gas inlet and outlet 6 fully, preferably is conical, and the bottom surface diameter is greater than the diameter of flange 3.
Use of the present utility modelly for slag heat during stewing flameproof apparatus, flameproof apparatus is boiled in a covered pot over a slow fire to pond steam by flange 3 and heat and efflux passage and be connected.In the slag efflorescence starting stage, when in the stewing pond of heat, steam reaches certain pressure (being greater than 0.3kg), by the movable tongue of this device 5 jack-up, movable tongue 5 is close to flange 3, with gas inlet and outlet 6, match and capping gas inlet and outlet 6, and then the steam in the stewing pond of sealing heat effluxes passage, keep vapor pressure in pond to stablize, guarantee slag minute-pressure efflorescence.Along with the carrying out reacted in the stewing pond of heat, when in the stewing pond of heat, vapor pressure is low (being less than 0.3kg), movable tongue 5 falls automatically, pond external body air is inhaled in pond, the inflammable gas produced in slag efflorescence process is effluxed to passage dilution displacement through steam discharges outside pond, fundamentally stop inflammable gas and gathered, met the possibility of naked light detonation.
Specific embodiment:
The utility model is applied in the stewing pond of Laiwu Iron & Steel Group Taidong Industrial Co., Ltd.'s slag heat.The described flameproof apparatus design stewing for slag heat is as follows: protective housing 1 is conical, bottom surface diameter 540mm, and flange 3 diameter 460mm, design height 200mm between protective housing 1 and flange 3, be uniformly distributed connection by three connecting rods 2.In flange 3, gas inlet and outlet 6 designs are square, length of side 135mm.Gas inlet and outlet 6 bottoms are provided with the movable tongue 5 that thickness 3mm, the length of side are slightly larger than gas inlet and outlet 6, and it matches with gas inlet and outlet 6 and can import and export 6 by confining gas; While not working in the stewing pond of heat, it is static that movable tongue 5 and flange 3 are 40 ° of angles.Above-mentioned movable tongue 5 adopts high temperature resistant, etch-proof corrosion resistant plate material, the about 0.526kg of own wt.
For verifying the stewing pool gas composition of heat, specially gas collection has been carried out in the stewing pond of the heat in normal production.The gas collecting time: heat, after the stewing 7.5 hours time, without pressure, adopts needle tubing to collect in pond, and gatherer process is unavoidably sneaked into the part air.
Testing result and air contrast as following table 1:
Gas testing result in the stewing pond of table 1 heat
| Gas componant | Detect the gas proportion | Ratio in air | The inflammable gas explosion limit |
| Carbon dioxide | 16.5% | 0.03% | |
| Hydrogen | 2.1% | |
4%-74.2% |
| Oxygen | 18.1% | 20.95% | |
| Nitrogen | 63.2% | 78.08% | |
| Carbon monoxide | 0.5% | Seldom | 12.5%-74% |
Upper table 1 explanation is higher in the concentration of the stewing later stage hydrogen of heat, very easily meets gas explosion limit.
Use the of the present utility model for the stewing flameproof apparatus of slag heat of above-mentioned design, when in the stewing pond of heat, steam reaches certain pressure, by the movable tongue jack-up of this device, closed steam effluxes passage, keeps vapor pressure in pond to stablize.When the later stage, the pond internal pressure reduced, can automatically open, by with ambient air to diluted stream, make the hydrogen in the stewing tank of heat not reach explosion limit, prevent the quick-fried phenomenon of spray in the stewing pond of heat.
This device is since installing, produce stable smooth operation so far, effective execution steel-making slag powder metallization processes, realize higher slag iron separation rate, thoroughly stopped the generation of regularly detonation of nothing in the stewing production process of slag heat, quick-fried spray event, fundamentally eliminated the employee and worried all the time at work the unstable psychology of safety.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described.Although with reference to embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is modified or is equal to replacement, do not break away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (6)
1. a flameproof apparatus hot stewing for slag, comprise protective housing (1), some connecting rods (2) and flange (3), it is characterized in that, described protective housing (1) is connected with flange (3) by connecting rod (2);
Be provided with gas inlet and outlet (6) in the middle of described flange (3), gas inlet and outlet (6) bottom is provided with a movable tongue (5) and is connected with a side of gas inlet and outlet (6) by loose-leaf (4); Described movable tongue (5) is being freely activity of contrary protective housing direction in 0～40 ° of angular region by loose-leaf (4) with flange (3); When movable tongue (5) and flange (3) are 0 ° of angle, movable tongue (5) matches and capping gas inlet and outlet (6) with gas inlet and outlet (6).
2. the flameproof apparatus hot stewing for slag according to claim 1, is characterized in that, described movable tongue (5) adopts high temperature resistant, etch-proof corrosion resistant plate material.
3. the flameproof apparatus hot stewing for slag according to claim 1 and 2, is characterized in that, described movable tongue (5) weight is 0.526kg.
4. the flameproof apparatus hot stewing for slag according to claim 1, is characterized in that, described connecting rod (2) is located to be connected and fixed with flange (3) at the bolt eyelet (7) of flange (3).
5. according to claim 1 or 4 is described, for the stewing flameproof apparatus of slag heat, it is characterized in that, described connecting rod (2) evenly is arranged between protective housing (1) and flange (3).
6. the flameproof apparatus hot stewing for slag according to claim 1, is characterized in that, it is conical that described protective housing (1) is, and the bottom surface diameter is greater than the diameter of flange (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401731.8U CN203384434U (en) | 2013-07-05 | 2013-07-05 | Explosion-proof device used for steel slag hot braising |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401731.8U CN203384434U (en) | 2013-07-05 | 2013-07-05 | Explosion-proof device used for steel slag hot braising |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384434U true CN203384434U (en) | 2014-01-08 |
Family
ID=49872926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320401731.8U Withdrawn - After Issue CN203384434U (en) | 2013-07-05 | 2013-07-05 | Explosion-proof device used for steel slag hot braising |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352999A (en) * | 2013-07-05 | 2013-10-16 | 莱芜钢铁集团泰东实业有限公司 | Explosion-proof device for steel slag hot braising |
-
2013
- 2013-07-05 CN CN201320401731.8U patent/CN203384434U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352999A (en) * | 2013-07-05 | 2013-10-16 | 莱芜钢铁集团泰东实业有限公司 | Explosion-proof device for steel slag hot braising |
| CN103352999B (en) * | 2013-07-05 | 2015-05-06 | 莱芜钢铁集团泰东实业有限公司 | Explosion-proof device for steel slag hot braising |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140108 Effective date of abandoning: 20150506 |
|
| RGAV | Abandon patent right to avoid regrant |