KR20160137197A - Gimbal distributor for furnace - Google Patents
Gimbal distributor for furnace Download PDFInfo
- Publication number
- KR20160137197A KR20160137197A KR1020150071979A KR20150071979A KR20160137197A KR 20160137197 A KR20160137197 A KR 20160137197A KR 1020150071979 A KR1020150071979 A KR 1020150071979A KR 20150071979 A KR20150071979 A KR 20150071979A KR 20160137197 A KR20160137197 A KR 20160137197A
- Authority
- KR
- South Korea
- Prior art keywords
- cooling
- chute
- passage
- flow path
- swivel
- Prior art date
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
- F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
- F27D2009/0083—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Charging Or Discharging (AREA)
- Blast Furnaces (AREA)
Abstract
Description
Disclosed is a charging device for uniformly distributing and charging raw materials into a melting furnace of a molten iron manufacturing facility.
For example, in a FINEX facility for producing molten iron by reducing spectra, hot compacted iron (HCI) as a raw material and coal briquette as a fuel are charged into a melting furnace to melt the molten iron, After that, steel is manufactured from it and supplied to each customer.
A gimbal distributor is provided at the upper part of the melting furnace to distribute the transported raw materials and fuel (hereinafter, raw materials and fuels collectively referred to as raw materials) according to operating conditions and charge them into the melting furnace. The charging device is a device for uniformly distributing the raw material in the melting furnace in accordance with operating conditions in the furnace, and a turning chute for switching the direction of introduction of the raw material is provided at the lower end.
Since the charging device is exposed to a high temperature inside the melting furnace, the inside of the device and the turning chute are cooled by using a cooling gas such as nitrogen to protect the device.
However, in the conventional cooling method, there is a problem that the cooling area is changed as the turning chute keeps turning, a local temperature change occurs on the surface of the turning chute, and the turning chute is damaged due to the thermal stress fluctuation.
The swivel chute has a refractory attached to an outer shell of the swivel chute. As described above, since the cooling is not properly performed, cracks are generated in the shell due to high temperature and the refractory is detached as the welded portion is worn.
Thus, the raw material distribution control of the melting furnace is poor and the sulfur content becomes unstable. Further, it takes a lot of time to replace and repair the turning suit of the charging device, which results in a problem that the production amount is lowered.
Provided is a raw material charging device for a melting furnace which can more effectively cool a turning chute from a high temperature in a melting furnace and prevent thermal damage of the turning chute.
This embodiment is a raw material charging apparatus for a melting furnace, which comprises a turning chute provided at a lower end of a charging tube to which a raw material is charged so as to be rotatable so as to control the charging distribution of the raw material, wherein the turning chute comprises a sheath constituting an outer shape, And a cooling flow path through which the cooling medium is installed.
And a refractory attached to the outer surface of the shell.
And a cooling water supply unit connected to the cooling channel for supplying and circulating cooling water.
The shell may be made of steel.
The cooling passage may include a front end cooling passage for cooling the leading end portion of the swing chute, and a body cooling passage for cooling the body portion of the swivel chute.
The front end cooling passage includes a front end supply passage that extends from an inlet end of the swivel chute to an outlet end of the swivel chute to supply a cooling medium, a tip portion which is connected to the front end supply passage and extends along an outlet- And a leading end discharge passage connected to the leading end passage and extending from the leading end of the circulating chute to the leading end of the leading chute to discharge the cooling medium.
The body cooling channel is connected to the body supply channel and extends along the surface of the swivel chute in a staggered manner from the output end to the inlet end, A body flow path through which the cooling medium flows to the surface of the chute, and a body discharge flow path connected to the body flow path extending to the inlet side tip end to discharge the cooling medium.
The swivel chute may have a cylindrical structure.
As described above, according to the present embodiment, the cooling effect of the swivel chute is increased to prevent the thermal deformation of the swivel chute and to extend the life span as much as possible.
Further, the control of the distribution of the raw materials in the charging device can be stably maintained in the long term, so that the smelting operation can be stabilized and the productivity can be enhanced.
1 is a view showing a raw material charging apparatus for a melting furnace according to an embodiment of the present invention.
2 is a cross-sectional view showing the structure of a turning chute of the raw material charging apparatus according to the present embodiment.
3 is a more detailed sectional view of the swivel chute according to the present embodiment.
4 is a schematic view for explaining the cooling water circulation structure of the swivel chute according to the present embodiment.
Fig. 5 is a chart showing the cooling efficiency of the swivel chute according to the present embodiment in comparison with the conventional one.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Hereinafter, the present embodiment will be described as an example of a gimbal distributor in which a hot compacted iron (HCI) and a coal briquette are mixed and charged into a melting furnace in a molten iron manufacturing facility called FINEX Explain.
The molten iron manufacturing facility includes a reducing furnace and a melting furnace. A charging device is installed in the upper end of the melting furnace to charge the raw materials evenly.
As shown in FIG. 1, the
As shown in FIG. 2, the
The
The
As described above, by cooling the cooling medium to flow into the
The
In this embodiment, the cooling medium may be made of cooling water. As the cooling medium, various materials such as cooling oil may be used in addition to cooling water.
The
3 and 4 show the specific structure of the
3, the
That is, in the present embodiment, the
The lower end of the
As described above, by separately cooling the leading end R of the
The front end cooling passage is structured such that cooling water is directly supplied to the outward end portion R of the
3, the
As described above, the cooling water is supplied directly to the outward end portion R of the
The body cooling passage includes a
3, the
Thus, the cooling water passes through the entire body portion B of the orbiting
Fig. 4 schematically shows the cooling structure of the
The cooling water that has been heat-exchanged while passing through the body passage (55) is circulated through the body discharge passage (56).
Furthermore, the outgoing front end portion R of the turning
As described above, cooling is performed intensively at the outgoing tip end R of the orbiting
5 is a chart showing the cooling efficiency of the
5, the comparative examples are divided into the welding type of the
As shown in FIG. 5, in the comparative examples, the cooling of the
In the embodiment, since the cooling water is circulated along the
Therefore, in the case of the present embodiment, it is understood that the cooling effect of the turning
While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.
10: charging device 20: input pipe
30: turning suit 32: sheath
34: refractory 40:
50: cooling channel 51: end feed channel
52: leading end passage 53: leading end discharging passage
54: body supply channel 55: body channel
56: Body discharge channel 60: Cooling water supply part
Claims (7)
Wherein the swivel chute includes an outer casing and a cooling channel provided on the outer casing for moving the cooling medium,
Wherein the cooling flow path includes a front end cooling flow path for cooling the leading end portion of the swing chute and a body cooling flow path for cooling the body portion of the swivel chute.
And a refractory attached to the outer circumferential surface of the outer shell.
And a cooling water supply unit connected to the cooling channel for supplying and circulating cooling water.
The front end cooling passage includes a front end supply passage that extends from an inlet end of the swivel chute to an outlet end of the swivel chute to supply a cooling medium, a tip portion which is connected to the front end supply passage and extends along an outlet- And a leading end discharge passage connected to the leading end passage and extending from the leading end of the turning chute to the leading end of the leading end to discharge the cooling medium.
The body cooling channel is connected to the body supply channel and extends along the surface of the swivel chute in a staggered manner from the output end to the inlet end, A body flow path for flowing the cooling medium to the surface of the chute, and a body discharge flow path connected to the body flow path extending to the inlet side front end to discharge the cooling medium.
Wherein the turning chute is a cylindrical structure.
Wherein the casing is made of a steel material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150071979A KR20160137197A (en) | 2015-05-22 | 2015-05-22 | Gimbal distributor for furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150071979A KR20160137197A (en) | 2015-05-22 | 2015-05-22 | Gimbal distributor for furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160137197A true KR20160137197A (en) | 2016-11-30 |
Family
ID=57707143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150071979A KR20160137197A (en) | 2015-05-22 | 2015-05-22 | Gimbal distributor for furnace |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20160137197A (en) |
-
2015
- 2015-05-22 KR KR1020150071979A patent/KR20160137197A/en not_active Application Discontinuation
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E902 | Notification of reason for refusal | ||
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