CN202482343U - Device used for cooling direct reduction iron - Google Patents
Device used for cooling direct reduction iron Download PDFInfo
- Publication number
- CN202482343U CN202482343U CN201220083545XU CN201220083545U CN202482343U CN 202482343 U CN202482343 U CN 202482343U CN 201220083545X U CN201220083545X U CN 201220083545XU CN 201220083545 U CN201220083545 U CN 201220083545U CN 202482343 U CN202482343 U CN 202482343U
- Authority
- CN
- China
- Prior art keywords
- cooling
- high temperature
- section
- chain plate
- temperature chain
- 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
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a device used for cooling direct reduction iron. The device used for cooling direct reduction iron comprises high temperature chain plate machines, a first cooling section, a second cooling section and a third cooling section. The first cooling section, the second cooling section and the third cooling section are arranged according to conveying direction. Each high temperature chain plate machine is provided with a first infrared thermometer and a second infrared thermometer and can be adjusted according to cooling condition. The device used for cooling direct reduction iron comprises two high temperature chain plate machines. The two high temperature chain plate machines can enable reduction iron and water to stir each other in operation so that mixing is more uniform. The high temperature chain plate machines convert frequency to adjust speed and all three cooling sections are provided with flow meters and water regulation devices so that the whole cooling process is controllable. Water flushing pipes are arranged on the bottoms of the high temperature chain plate machines and the water flushing pipes are opened to flush disintegrating slag into a slag tank when disintegrating slag is accumulated.
Description
Technical field
The utility model relates to a kind of refrigerating unit, is specifically related to be applicable in a kind of field of metallurgy the device that is used to cool off dri of rotary hearth furnace place production technology.
Background technology
Rotary hearth furnace directly reduces one of major technique as non-blast furnace ironmaking, and it obtains common concern with meliority such as the simple and economical property of flow process are good.This technology is processed carbonaceous pelletizing with iron-bearing material; Go into rotary hearth furnace after the oven dry, 1200-1300 ℃ reduction zone is reduced to metallized pellet with carbonaceous pelletizing in stove; ZnO in the pelletizing is reduced into Metal Zn, and the metallic zinc volatilization gets into and reoxidizes generation ZnO in the flue gas; Can obtain being rich in the secondary dust of ZnO again through the collection to flue dust, the metallized pellet of producing can supply blast furnace and electric furnace to use.Reclaim when this technology has realized Fe, Zn, solved the problem that Iron And Steel Plant's difficulty is utilized zinc-containing dust preferably.
But because pelletizing needs to come out of the stove to guarantee the steady running of drawing mechanism at comparatively high temps, store and transportation, need the high temperature pelletizing is cooled off for ease of pelletizing.
At present both at home and abroad the type of cooling to direct reducting pellet mainly contains two kinds, and one, the waters cooling: be about to the high temperature pelletizing and directly immerse in the water and cool off, this mode cooling intensity is big, the short period of time cooling, but the finished product water cut is high; Two, cooling indirectly: one adopts the cooling cylinder form, and water does not directly contact with material, and cooling intensity is low, and the time is long, and interaction is arranged between the pelletizing, and chip index is about 30%, and scrap rate is higher.
The rotary hearth furnace technology is fast-developing, and above-mentioned cooling technology can not satisfy the demand of rotary hearth furnace, needs the new cooling technology of exploitation.
The utility model content
Goal of the invention: in order to overcome the deficiency that exists in the prior art, the utility model provides a kind of device that is used to cool off dri.
Technical scheme: to achieve these goals; A kind of device that is used to cool off dri of the utility model; Comprise high temperature chain mat machine, one section of cooling, two sections of coolings and cool off three sections according to the throughput direction setting; Said high temperature chain mat machine disposes first infrared thermometer and second infrared thermometer, can adjust according to the cooling situation.
One section cooling section for the employing spray cooling of said cooling cools off one section and adopts the solid cone shaped nozzle, and atomizing particle size is less than 0.2mm, and nozzle arranges that evenly drop is covered with chain mat machine; Three sections of two sections of said coolings, cooling be for adopting spray refrigerative cooling section, cools off one section the high temperature dri is cooled to below 500 ℃.
Said chain mat machine head is provided with slag bath, when chain mat machine bottom powder gathers materials seriously, then wash tub pipe is opened, with powder towards handling to slag bath.
Chain mat machine is two, when transhipment, material and water coolant is mixed, and localized hyperthermia can not occur.At article one chain mat machine head slag bath is set, the other water pipe that is provided with of chain mat machine when the chain mat machine bottom has powder to gather, dashes powder to slag bath through water pipe, guarantees the smooth and easy operation of chain mat machine.
Beneficial effect: compared with prior art, a kind of device that is used to cool off dri of the utility model has the following advantages:
1, chain mat machine has two, when transhipment, reduced iron and water is stirred mutually, mixes more even;
2, adopt spray cooling in high temperature section, this moment, cooling intensity was low, can not produce extremely cold and caused the pelletizing efflorescence; And, adopting the spray cooling in the pelletizing low-temperature zone, cooling intensity is high;
3, water directly contacts with pelletizing, and water loss is significantly less than cooling cylinder, and chain mat machine speed control by frequency variation and cooling water inflow accurate and adjustable, can the water cut of pelletizing be controlled at below 3%;
4, pelletizing does not have relative operation at carrier bar, has avoided colliding between the pelletizing and has caused efflorescence.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done explanation further.
As shown in Figure 1; The device that is used to cool off dri of the utility model; Comprise high temperature chain mat machine 3, one section 4 of cooling, two section 5 of cooling and cool off three section 7 according to the throughput direction setting; Cool off one section 4, two section 5 of cooling and cool off and three section 7 flow is set and takes into account valve, high temperature chain mat machine 3 configuration infrared thermometers.
Wherein, Cool off one section 4 for adopting the cooling section of spray cooling, cool off three section 7 of two section 6, cooling and spray the refrigerative cooling section, cool off one section 4 the high temperature dri is cooled to 1000 ℃-500 ℃ for adopting; Cooling off two section 5 is 500 ℃-300 ℃, and cooling off three section 7 is 300 ℃-150 ℃.Chain mat machine 3 heads are provided with slag bath, and chain mat machine 3 has two, when transhipment, reduced iron and water are stirred mutually, mix more even.
The device that being used to of the utility model cooled off dri in use; Dri 1 is discharged on the chain mat machine 3 from discharging chute 2; Chain mat machine 3 speed control by frequency variations can adjust according to pelletizing cooling situation, realize the accurate control of process of cooling; Dri 1 is static relatively on chain mat machine 3, does not have to interact.Initial each cooling section water yield standard-sized sheet, the temperature of observing first infrared thermometer 6 and second infrared thermometer, 8 places is when first infrared thermometer, 6 detected temperatures are lower than 100 ℃; Regulate two section 5 valve water yield of cooling; Reduce two section 5 water yield of cooling, until going out chain, the finished product temperature is about 150 ℃; When first infrared thermometer, 6 detected temperatures are lower than 150 ℃ greater than 100 ℃, will cool off three section 7 valve closes; When first infrared thermometer, 6 detected temperatures are higher than 350 ℃, then reduce chain mat machine 3 speed, reduce the material loading amount simultaneously, be lower than till 350 ℃ until first infrared thermometer 6.When second infrared thermometer, 8 temperature are lower than 60 ℃, regulate three section 7 water regulating valve of cooling, reduce the water yield, be about 100 ℃ until second infrared thermometer, 8 detected temperatures.When observing chain mat machine 3 bottom accumulated slags when serious, open washpipe 9 valves, broken ball, thin slag are flushed in the slag bath 10 and clear up.
The above only is the preferred implementation of the utility model; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. device that is used to cool off dri; It is characterized in that: the cooling that comprise two high temperature chain mat machines (3), is provided with according to throughput direction one section (4), cooling two sections (5) with cool off three sections (7); Said high temperature chain mat machine (3) configuration first infrared thermometer (6) and second infrared thermometer (8), said chain mat machine (3) head is provided with slag bath.
2. the device that is used to cool off dri according to claim 1; It is characterized in that: said cooling one section (4) is for adopting the cooling section of spray cooling; Said cooling two sections (6), coolings three sections (7) spray the refrigerative cooling section for adopting, and cool off one section (4) the high temperature dri is cooled to below 500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220083545XU CN202482343U (en) | 2012-03-08 | 2012-03-08 | Device used for cooling direct reduction iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220083545XU CN202482343U (en) | 2012-03-08 | 2012-03-08 | Device used for cooling direct reduction iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482343U true CN202482343U (en) | 2012-10-10 |
Family
ID=46956780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220083545XU Expired - Fee Related CN202482343U (en) | 2012-03-08 | 2012-03-08 | Device used for cooling direct reduction iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202482343U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398584A (en) * | 2013-08-22 | 2013-11-20 | 中冶北方（大连）工程技术有限公司 | Material temperature detection and control device for sintering pellet annular cooler |
| CN105087843A (en) * | 2015-08-24 | 2015-11-25 | 江苏省冶金设计院有限公司 | Device for cooling high-temperature direct reduced iron |
| CN105969927A (en) * | 2016-06-15 | 2016-09-28 | 江苏省冶金设计院有限公司 | Water quenching device for direct reduced iron (DRI) produced by rotary hearth furnace and method |
-
2012
- 2012-03-08 CN CN201220083545XU patent/CN202482343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398584A (en) * | 2013-08-22 | 2013-11-20 | 中冶北方（大连）工程技术有限公司 | Material temperature detection and control device for sintering pellet annular cooler |
| CN105087843A (en) * | 2015-08-24 | 2015-11-25 | 江苏省冶金设计院有限公司 | Device for cooling high-temperature direct reduced iron |
| CN105969927A (en) * | 2016-06-15 | 2016-09-28 | 江苏省冶金设计院有限公司 | Water quenching device for direct reduced iron (DRI) produced by rotary hearth furnace and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101977866B (en) | Cooling treatment system and cooling treatment method of molten slag | |
| CN102161567B (en) | Method for smelting nickel alloy by utilizing ore-smelting electric furnace and producing mineral wool fiber by melting waste residues and utilizing sensible heat | |
| CN1888081B (en) | Liquid blast furnace slag pelletizing method and apparatus for heat recovering process | |
| CN105112577B (en) | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method | |
| CN106045301A (en) | Method for producing mineral wool by using early-stage molten-state steel slag of converter | |
| CN104531923A (en) | Blast furnace iron-making raw material and blast furnace iron-making method | |
| CN105087835B (en) | System and method for recycling high-temperature slag waste heat in coal gasification manner | |
| CN104370455A (en) | Method and device for producing mineral wool by matching molten-state blast furnace slag with mine tailings | |
| CN108148942A (en) | A kind of converter slag stays slag gasification dephosphorization method and recycles smelting process | |
| CN111394534A (en) | Method for continuous smelting reduction iron making | |
| CN209162105U (en) | The blast furnace melt cinder baffling cooling treatment device of recyclable waste heat | |
| CN206607253U (en) | A kind of reduction shaft furnace | |
| CN202482343U (en) | Device used for cooling direct reduction iron | |
| CN102586532A (en) | Direct reduction iron cooling device | |
| CN106282445B (en) | Device and method for recovering waste heat of blast furnace slag | |
| CN104359321A (en) | Vertical cement clinker cooling machine | |
| CN104946826B (en) | A kind of metallurgical slag waste heat recovery apparatus and method | |
| CN105063259B (en) | A kind of blast furnace cinder heat reclaim unit and application method | |
| CN203668439U (en) | Direct reduced iron cooling device for rotary hearth furnace | |
| CN206803764U (en) | A kind of long-life, the kiln drawing mechanism of regulating flow quantity | |
| CN102071271B (en) | Blast-furnace ironmaking raw material hot delivery and hot charging process and equipment | |
| CN103453773B (en) | Liquid state slag removal method of high-temperature oriented silicon steel heating furnace | |
| CN208733147U (en) | A kind of device for blast furnace slag granulation processing | |
| CN102191344A (en) | Hot delivery and hot charging process of blast furnace iron making raw material and device thereof | |
| CN101736103A (en) | Iron manufacture technology |
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: 20121010 Termination date: 20190308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |