CN218026187U - Converter dry dedusting coarse ash device for molten iron desulphurization - Google Patents
Converter dry dedusting coarse ash device for molten iron desulphurization Download PDFInfo
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- CN218026187U CN218026187U CN202221661705.4U CN202221661705U CN218026187U CN 218026187 U CN218026187 U CN 218026187U CN 202221661705 U CN202221661705 U CN 202221661705U CN 218026187 U CN218026187 U CN 218026187U
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Abstract
The utility model discloses a device for desulfurizing molten iron by using converter dry dedusting coarse ash, which belongs to a steel production device and comprises an evaporative cooler, a settling flue, a zipper machine, a desulfurizing station storage bin, a weighing hopper and an electric chute; the entrance of the evaporative cooler is connected with the flue gas outlet of the converter through the evaporative cooling flue, the exit of the evaporative cooler is connected with the settling flue, the settling flue is a U-shaped flue, the lowest end of the settling flue is provided with a coarse ash outlet, the zipper machine is arranged in an inclined manner, the low-side feed inlet is positioned below the coarse ash outlet, the lower part of the high-side discharge outlet is provided with a desulfurization station storage bin, and the desulfurization station storage bin is connected with a weighing hopper through a feeder; the weighing hopper is connected with an electric chute through a feeder. The technical problems that the temperature of molten iron is unstable, the temperature of molten iron in an abnormal furnace is high, and the converter is easy to splash accidents are solved by relatively treating in situ and removing coarse ash by using a converter dry method.
Description
Technical Field
The utility model relates to a steel production device, in particular to a converter dry dedusting coarse ash device for molten iron desulphurization.
Background
The flue gas generated in the converter steelmaking process contains a large amount of iron-containing dust, the dedusting ash is metal and non-metal mineral particles generated in the high-temperature smelting process, and in order to better search a circular economy mode, the prior art mostly adopts a dry dedusting technology to collect dedusting coarse ash, the dedusting coarse ash is a high-fine-powder substance, the main components of the dedusting coarse ash are Fe and Ca, a small amount of solid C is also contained, and the converter steelmaking process has the characteristics of fine granularity and high iron content. In the prior art, secondary resource utilization of converter dry dedusting coarse ash is mostly realized by adding ingredients into converter dry dedusting ash and then adopting a cold-bonded pellet production process to produce cold-bonded pellets meeting the use requirement of a converter. However, the treatment method needs to use a suction car to transport the dust to a centralized treatment point, and the dry dedusting coarse ash transportation and ash discharge process of the converter also causes the problem of secondary dust emission.
Therefore, a new device for dry dedusting of coarse ash by using a converter is needed to simplify the current recycling economy mode.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is not enough to above prior art, provides a converter dry process dust removal coarse ash is used for molten iron desulfurization's device, handles and utilizes converter dry process dust removal coarse ash through relative normal position, solves the molten iron temperature unstability, and unusual heat molten iron temperature is high, easily leads to the converter to splash the technological problem of accident.
The technical proposal of the utility model for solving the technical problem is that: the utility model provides a converter dry process dust removal coarse ash is used for device of molten iron desulfurization which characterized in that: comprises an evaporative cooler, a settling flue, a zipper machine, a storage bin of a desulfurization station, a weighing hopper and an electric chute; the inlet of the evaporative cooler is connected with a converter flue gas outlet through an evaporative cooling flue, the outlet of the evaporative cooler is connected with a settling flue, the settling flue is a U-shaped flue, the lowermost end of the settling flue is provided with a coarse ash outlet, the zipper machine is obliquely arranged, a low-side feed port is positioned below the coarse ash outlet, a desulfurization station storage bin is arranged below a high-side discharge port, and the desulfurization station storage bin is connected with a weighing hopper through a feeder; the weighing hopper is connected with an electric chute through a feeder.
Furthermore, a movable smoke hood is arranged between the vaporization cooling flue and the converter smoke outlet.
Furthermore, a drying plate is arranged below the coarse ash outlet, and a drying device is arranged below the drying plate.
Furthermore, foretell drying plate has inclination, and the one side below that drying plate is low is the zip fastener machine feed inlet.
Furthermore, a scraper is arranged on the upper surface of the drying plate.
Furthermore, the zipper machine comprises a chain, a driving device, a machine head part, a middle shell, a machine tail part and a feeding and discharging port.
Furthermore, the weighing hopper comprises a support, a shell, a weighing device, a pneumatic valve, a connecting pipe and a feeding pipe.
Further, the feeder is a rotary feeder.
Further, the rotary feeder comprises a motor, a transmission chain wheel and a rotary feeder.
Furthermore, the electric chute comprises a chute, a motor, a speed reducer, a guide rod and a limit switch.
Compared with the prior art, the utility model discloses following outstanding beneficial effect has:
1. the device reduces the labor intensity of workers engaged in crude ash discharge through the relative in-situ treatment and utilization of the dry dedusting crude ash, and solves the problem of increased transportation cost caused by transportation;
2. by reusing TFe in the coarse ash, the problem that the converter is controlled to splash due to high physical heat or chemical heat of molten iron is solved, and the smelting cost is reduced;
3. secondary dust pollution caused by the processes of dry dedusting, coarse ash transfer and ash discharge of the converter is avoided, and the working environment is purified;
4. the device is suitable for all KR desulfurization-converter process routes and is convenient to popularize.
Drawings
Fig. 1 is a schematic view of the operation flow of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description. In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the following embodiments, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," "side," and the like are used in an illustrative and non-restrictive sense, and are used in a generic and descriptive sense only and not for purposes of limitation, the referenced devices or elements must be in a particular orientation, configuration or operation, and not for purposes of limitation, as the orientation or positional relationship is illustrated in the figures.
As shown in fig. 1, the utility model comprises an evaporative cooler 1, a settling flue 2, a zipper machine 3, a desulfurizing station storage bin 4, a weighing hopper 5 and an electric chute 6.
The inlet of the evaporative cooler 1 is connected with the flue gas outlet of the converter through the evaporative cooling flue 7, and a movable smoke hood 8 is arranged between the evaporative cooling flue 7 and the flue gas outlet of the converter in the embodiment.
The outlet of the evaporative cooler 1 is connected with a settling flue 2, the settling flue 2 is a U-shaped flue, the lowermost end of the settling flue 2 is provided with a coarse ash outlet 9, a drying plate 10 is arranged below the coarse ash outlet 9, and a drying device 11 is arranged below the drying plate 10. Converter flue gas passes through the evaporative cooler 1, is condensed and settled under the action of water mist to form coarse ash, and water vapor in the condensed and settled coarse ash is removed as much as possible by the drying plate 10. The drying plate 10 in this embodiment has an inclination angle, and a feed inlet of the zipper machine 3 is arranged below one lower side of the drying plate 10. In the optimized scheme, a scraper is arranged on the upper surface of the drying plate 10.
The storage bin 4 of the desulfurization station is connected with a weighing hopper 5 through a feeder. The weighing hopper 5 comprises a support, a shell, a weighing device, a pneumatic valve, a connecting pipe and a feeding pipe, wherein the weighing device of the weighing hopper 5 is hung on the support through three sensors for weighing, and the weighing precision is 0.5%.
The weighing hopper 5 is connected with an electric chute 6 through a feeder. The feeder in this embodiment is a rotary feeder comprising a motor, a drive sprocket and a rotary feeder.
The electric chute 6 consists of a chute, a motor, a speed reducer, a guide rod and a limit switch, and the chute descends to the position above the liquid level of molten iron during feeding, so that coarse ash can be effectively prevented from being sucked away by a dust removal system, and the use efficiency of the coarse ash is improved.
It should be noted that, the utility model provides an evaporative cooler 1, subside flue 2, draw zipper machine 3, desulfurization station storage storehouse 4, weighing hopper 5, electronic chute 6 all can be purchased in the market, and its structure is not unique, and inner structure is different and different according to the model, the utility model discloses not specifically inject, can realize that the acquirement of coarse ash, processing and transfer, joining can.
Calculating the amount of the added crude ash according to the temperature of the molten iron, wherein the adding standards of the crude ash and the KR desulfurizing agent are as follows:
| temperature of molten iron (. Degree. C.) | X＜1250 | 1250≤X＜1280 | 1280≤X＜1310 | 1310≤X＜1340 | 1340≤X |
| Coarse ash addition (kg) | 0 | 1000 | 1800 | 2500 | 3000 |
| KR desulfurizing agent (kg) | 2400-3000 | 2300-2900 | 2220-2820 | 2150-2750 | 2100-2700 |
The coarse ash desulfurization and converter splashing control modes are as follows: KR desulfurization cross stirring head immerses certain degree of depth below the molten iron liquid level, relies on mechanical agitating unit rotatory for molten iron produces the swirl in the jar, through the dust removal coarse dust that electronic chute 6 added, is drawn into the molten iron inside with KR desulfurizer (lime powder + fluorite powder) by the swirl jointly and carries out the abundant reaction.
The reaction formula of CaO in the coarse ash in the molten iron is as follows:
4CaO+2[S]+[Si]＝2CaS(S)+Ca 2 SiO 4
CaO+[S]+[C]＝CaS(S)+CO(g)
recovering, simultaneously with the desulfurization reaction, TFe (FeO) in the raw ash:
[Si]+2(FeO)＝(SiO 2 )+2Fe
it should be noted that the present embodiment is not described in detail, and is a technique known in the art.
While certain embodiments of the present invention have been described above for purposes of illustration, it will be apparent to those skilled in the art that various obvious changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a converter dry process dust removal coarse ash is used for device of molten iron desulfurization which characterized in that: comprises an evaporative cooler, a settling flue, a zipper machine, a storage bin of a desulfurization station, a weighing hopper and an electric chute; the entrance of the evaporative cooler is connected with the flue gas outlet of the converter through the evaporative cooling flue, the exit of the evaporative cooler is connected with the settling flue, the settling flue is a U-shaped flue, the lowest end of the settling flue is provided with a coarse ash outlet, the zipper machine is arranged in an inclined manner, the low-side feed inlet is positioned below the coarse ash outlet, the lower part of the high-side discharge outlet is provided with a desulfurization station storage bin, and the desulfurization station storage bin is connected with a weighing hopper through a feeder; the weighing hopper is connected with an electric chute through a feeder.
2. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: and a movable smoke hood is arranged between the vaporization cooling flue and the converter smoke outlet.
3. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: and a drying plate is arranged below the coarse ash outlet, and a drying device is arranged below the drying plate.
4. The apparatus for desulfurizing molten iron according to claim 3, wherein: the drying plate is provided with an inclination angle, and a feeding hole of the zipper machine is arranged below one side of the drying plate, which is lower than the drying plate.
5. The apparatus for desulfurizing molten iron according to claim 3, wherein: the upper surface of the drying plate is provided with a scraper.
6. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: the zipper machine comprises a chain, a driving device, a machine head part, a middle shell, a machine tail part and a feeding and discharging port.
7. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: the weighing hopper comprises a support, a shell, a weighing device, a pneumatic valve, a connecting pipe and a feeding pipe.
8. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: the feeder is a rotary feeder.
9. The apparatus for desulfurizing molten iron according to claim 8, wherein: the rotary feeder comprises a motor, a transmission chain wheel and a rotary feeder.
10. The apparatus for desulfurizing molten iron according to claim 1, wherein the converter dry dedusting fly ash comprises: the electric chute comprises a chute, a motor, a speed reducer, a guide rod and a limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221661705.4U CN218026187U (en) | 2022-06-29 | 2022-06-29 | Converter dry dedusting coarse ash device for molten iron desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221661705.4U CN218026187U (en) | 2022-06-29 | 2022-06-29 | Converter dry dedusting coarse ash device for molten iron desulphurization |
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| Publication Number | Publication Date |
|---|---|
| CN218026187U true CN218026187U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221661705.4U Active CN218026187U (en) | 2022-06-29 | 2022-06-29 | Converter dry dedusting coarse ash device for molten iron desulphurization |
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| CN (1) | CN218026187U (en) |
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2022
- 2022-06-29 CN CN202221661705.4U patent/CN218026187U/en active Active
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