CN203923263U - A kind of lime inactivating device for the production of Al-CaO composite deoxidant - Google Patents
A kind of lime inactivating device for the production of Al-CaO composite deoxidant Download PDFInfo
- Publication number
- CN203923263U CN203923263U CN201420257167.1U CN201420257167U CN203923263U CN 203923263 U CN203923263 U CN 203923263U CN 201420257167 U CN201420257167 U CN 201420257167U CN 203923263 U CN203923263 U CN 203923263U
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- Prior art keywords
- lime
- steel basin
- race way
- dislocation
- composite deoxidant
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a kind of lime inactivating device for the production of Al-CaO composite deoxidant, for lime inactivating technique, produce Al-CaO composite deoxidant.This device comprises: steel basin, dislocation six flat blade disc turbine oar, plate washer, well heater, three hole supersonic spray guns, opening for feed, discharge port and motor.The utility model adopts race way local heating, and at race way supersonic speed winding-up CO
2the mode of gas, produces strong single loop boiling and stirs, and be blown into position is lime race way simultaneously, CO
2good with lime contact conditions, be beneficial to CO
2with lime reaction, at lime Surface Creation CaCO
3, greatly improve lime inactivating efficiency and effect, save energy.
Description
Technical field
The utility model relates to lime inactivating device, particularly a kind of lime inactivating device for the production of Al-CaO composite deoxidant.
Background technology
The deoxidation effect of molten steel directly affects the quality of steel, and Al is because deoxidation efficiency is high and the low deep deoxidation that is widely used in of cost, the Al that its deoxidation produces
2o
3be mingled with considerable part and remain in steel, affect steel product quality, also easily cause immersed nozzle for continuous casting mould dross, affect continuous casting production direct motion.Al-CaO composite deoxidant production cost is low, and CaO and Al can be by optimum proportion CaO/Al mass ratio ≈ 1.778 preparations, and the mixing Al-CaO of making composite deoxidant joins in molten steel, is easy to generate low melting point calcium aluminate.Can remove Al
2o
3be mingled with, and avoided immersed nozzle for continuous casting mould dross.But because easily absorbing moisture, lime produces hydration reaction generation Ca (OH)
2, can not be for steel-deoxidizing process.If Passivation Treatment is carried out in lime surface, can prevent lime hydration, the lime after passivation can be prepared the mixing Al-CaO of one-tenth composite deoxidant with Al.
At present, conventionally adopt bottom that the whipping appts of paddle blade is housed, utilize the high speed vartex rotation of blade, adopt the type of heating such as self-friction or electrically heated to carry out surface passivating treatment to material.Scientific and technical information, 2011 (17), delivered " production and the application practice of composite blowing sweetening agent passive lime ", after adopting jaw crusher that unslaked lime is just broken, more for further processing with Suspension roller ring roller mill (Raymond mill).By feeder, the feeding grinding machine of lime equal and quantitative is pulverized, adding together silicone oil continuous uniform simultaneously, gas blower blasts air from grinding machine bottom, fine powder is crossed pneumatic jig by air-flow band to the analyzer on top, being kept off back that granularity is large regrinded, little with air-flow, enter cyclone or bagroom and carry out separated and collected and become product, air-flow major part recycles.When grinding machine is pulverized lime, the silicone oil gas molecule adding the same period is constantly adsorbed on lime surface, thereby lime is carried out to Passivation Treatment.This technique mainly improves lime powder mobility, preventing hydration weak effect.Open (bulletin) number: the CN201148444 of Chinese patent, a kind of surface passivation process mixing apparatus of liquid steel refining slag is disclosed, by thermocouple measurement and temperature controlling system, cavity temperature in screw mixer is controlled to 80～100 ℃, the ball that lime fine powder is become with fusing assistant fine powder mixing dry-pressing such as fluorite fine powders and stearic acid etc. carry out the stirring of 10～30min, make the hydrophobic surface passivator such as stearic acid evenly fully cover the ball surface that dry-pressing becomes, isolated lime contacts with water in air, delay lime hydration, extend period of storage, but spiral stirrer easily produces radial and axial pair of circulation stirring, affect passivation efficiency.Open (bulletin) number: the CN2665127 of Chinese patent, discloses a kind of lime inactivating case, adopts heating unit that passivation the temperature inside the box is heated to 700 ℃ of left and right, with CO2 gas cylinder, passes into CO2 gas 15～20min, and Passivation Treatment is carried out in lime surface.This device is used at lime particle Surface Creation CaCO3 protective layer, and less investment is used flexibly, easy to maintenance, solved lime and be difficult for long storage time and transportation problem, but this device is not applied whipping device, and the lower passivation efficiency that causes of the CO2 gas flow rate spraying into is lower, and passivation effect is poor; This device All Ranges in passivating process all remains on same comparatively high temps, and energy consumption is high.
Utility model content
The utility model provides a kind of lime inactivating device for the production of Al-CaO composite deoxidant, for lime inactivating technique, produces Al-CaO composite deoxidant.
A kind of lime inactivating device for the production of Al-CaO composite deoxidant that the utility model provides comprises: steel basin, dislocation six flat blade disc turbine oar, plate washer, well heater, three hole supersonic spray guns, opening for feed, discharge port and motor.Dislocation six flat blade disc turbine oar is positioned at steel basin central authorities, and apart from steel basin distance from bottom C=0.18D, D is steel basin diameter, and dislocation six flat blade disc turbine oar top is connected with motor, adopts single axial Recycle design to stir; In lime race way, steel basin both sides, insert respectively two three hole supersonic spray guns, winding-up CO
2gas; Well heater is arranged in steel basin both sides external, and local heating is carried out near the race way three hole supersonic spray gun muzzle; Baffle plate is arranged on the inner both sides of steel basin, and three hole supersonic spray gun muzzle are through baffle plate; Opening for feed is arranged on steel basin top, and discharge port is arranged on steel basin bottom.
The utility model is compared with existing same device, and its beneficial effect is embodied in:
The utility model adopts race way local heating, and at race way supersonic speed winding-up CO
2the mode of gas, produces strong single loop boiling and stirs, and be blown into position is lime race way simultaneously, CO
2good with lime contact conditions, be beneficial to CO
2with lime reaction, at lime Surface Creation CaCO
3, greatly improve lime inactivating efficiency and effect, save energy.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the lime inactivating device for the production of Al-CaO composite deoxidant.
Fig. 2 is the dislocation six flat blade disc turbine paddle structure front view schematic diagram that a kind of lime inactivating device for the production of Al-CaO composite deoxidant adopts.
Fig. 3 is the dislocation six flat blade disc turbine paddle structure vertical view schematic diagram that a kind of lime inactivating device for the production of Al-CaO composite deoxidant adopts.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of lime inactivating device for the production of Al-CaO composite deoxidant consists of steel basin 1, dislocation six flat blade disc turbine oar 2, plate washer 3, well heater 4, three hole supersonic spray guns 5, opening for feed 6, discharge port 7 and motor 8.Dislocation six flat blade disc turbine oar 2 is positioned at steel basin 1 central authorities, and apart from steel basin 1 distance from bottom C=0.18D, D is steel basin diameter, and dislocation six flat blade disc turbine oar 2 tops are connected with motor 8, adopts single axial Recycle design to stir; In steel basin 1 lime race way, both sides, insert respectively two three hole supersonic spray guns 5, winding-up CO2 gas; Well heater 4 is arranged in steel basin 1 both sides external, and local heating is carried out near the race way three hole supersonic spray gun 5 muzzle; Baffle plate is arranged on the inner both sides of steel basin 1, and three hole supersonic spray gun 5 muzzle are through baffle plate; Opening for feed 6 is arranged on steel basin 1 top, and discharge port 7 is arranged on steel basin 1 bottom.
Operational instances of the present utility model:
By 2 tons of granularities of milled, be that 60 object lime fine powders are within opening for feed packs passivating device into, device local temperature is controlled at 300 ℃, dislocation six flat blade disc turbine oar rotating speed is 500r/min, from steel basin bottom level C=0.18D, D is steel basin diameter, apart from the both sides at 1/6 place, steel basin bottom, inserting respectively 3 hole supersonic speed CO2 spray guns, stagnation air pressure is 0.95MPa, exit gas Mach number Ma is 2, flow is 150m3/h, the winding-up time is 20min, produces strong single loop boiling and stirs, and by CO2, the processing of passivation preventing hydration is carried out in lime surface.
Claims (1)
1. the lime inactivating device for the production of Al-CaO composite deoxidant, it is characterized in that this device comprises: steel basin, dislocation six flat blade disc turbine oar, plate washer, well heater, three hole supersonic spray guns, opening for feed, discharge port and motor, dislocation six flat blade disc turbine oar is positioned at steel basin central authorities, apart from steel basin distance from bottom C=0.18D, D is steel basin diameter, dislocation six flat blade disc turbine oar top is connected with motor, adopts single axial Recycle design to stir; In lime race way, steel basin both sides, insert respectively two three hole supersonic spray guns, winding-up CO
2gas; Well heater is arranged in steel basin both sides external, and local heating is carried out near the race way three hole supersonic spray gun muzzle; Baffle plate is arranged on the inner both sides of steel basin, and three hole supersonic spray gun muzzle are through baffle plate; Opening for feed is arranged on steel basin top, and discharge port is arranged on steel basin bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257167.1U CN203923263U (en) | 2014-05-19 | 2014-05-19 | A kind of lime inactivating device for the production of Al-CaO composite deoxidant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257167.1U CN203923263U (en) | 2014-05-19 | 2014-05-19 | A kind of lime inactivating device for the production of Al-CaO composite deoxidant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203923263U true CN203923263U (en) | 2014-11-05 |
Family
ID=51819118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420257167.1U Expired - Fee Related CN203923263U (en) | 2014-05-19 | 2014-05-19 | A kind of lime inactivating device for the production of Al-CaO composite deoxidant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203923263U (en) |
-
2014
- 2014-05-19 CN CN201420257167.1U patent/CN203923263U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |