CN206069676U - Smelting furnace system is returned in the direct mummification of pickling sludge - Google Patents
Smelting furnace system is returned in the direct mummification of pickling sludge Download PDFInfo
- Publication number
- CN206069676U CN206069676U CN201621095549.4U CN201621095549U CN206069676U CN 206069676 U CN206069676 U CN 206069676U CN 201621095549 U CN201621095549 U CN 201621095549U CN 206069676 U CN206069676 U CN 206069676U
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- CN
- China
- Prior art keywords
- sludge
- bar screen
- smelting furnace
- belt feeder
- feeding end
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 74
- 238000005554 pickling Methods 0.000 title claims abstract description 34
- 238000003723 Smelting Methods 0.000 title claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 33
- 230000018044 dehydration Effects 0.000 claims abstract description 19
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003034 coal gas Substances 0.000 claims description 3
- 238000002036 drum drying Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000013590 bulk material Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
This utility model discloses a kind of direct mummification of pickling sludge and returns smelting furnace system, and the system includes Pulp pump, at least one dehydration equipment, stockyard of pickling sludge, loads transporting equipment, receiver bin, drying plant, bar screen, stores up area, bulk material ground blanking bin；The pressurization of pickling sludge water is delivered to filter press by Pulp pump, sludge cake is transported to stockyard of pickling sludge by belt feeder and is dried, the sludge dried after a period of time is transported to receiver bin by loader, receiver bin is provided with hopper wall vibrator, belt feeder subsequently unloads sludge to rotary drum dryer, sludge after drying is unloaded to bar screen automatically, and sludge cake screening is stacked or smelting furnace is put into；This utility model effectively reduces slag former consumption, reduces raw metal consumption, improves the recovery rate of metal, and environment is not affected.
Description
Technical field
This utility model is related to a kind of direct mummification of pickling sludge and returns smelting furnace system.
Background technology
Rustless steel occurs the iron scale of black, yellow in process, in order to improve stainless outward appearance and resistance to
Radioactivity, the rustless steel after processing must carry out acid wash passivation process, and main purpose is to remove after welding, high temperature process are processed to produce
Raw iron scale, being allowed to bright as silver has light, and makes the surface after process form one layer of oxide-film with chromium as main matter, will not
Secondary oxygen erosion is produced again, so as to improve the surface corrosion quality of stainless steel productss, extends system service life.
With increasingly depleted and the continuous improvement of environmental requirement of resource, iron and steel energy-saving and emission-reduction work faces choosing for sternness
War.The sludge quantity that acid-washing stainless steel is produced accounts for the 3%～5% of stainless steel output, containing valuable metals such as Ni, Cr, Fe in sludge
Element, contains CaF simultaneously2、CaO、SiO2、CaSO4Deng material.In recent years, to acid-washing stainless steel sludge minimizing, it is innoxious,
The research of recycling treatment is more and more, is not only the needs of environmental conservation, and the requirement of sustainable development, even more realizes following
The embodiment of ring economy.
Not only contain more CaF in pickling sludge2, while also containing a small amount of CaO, fusing point is relatively low, certain
Furnace temperature under, the fusion temperature of flux is lower, and the degree of superheat is higher, and mobility is better, reaction be just proceeded more quickly, smelting can be returned
Fluorite is replaced to use as slagging agent in stove.In addition, can improve containing many metallicses such as Fe, Cr, Ni etc. in sludge
The recovery rate of iron of smelting furnace, reduces raw metal consumption.
At present, most domestic rustless steel manufacturer remains simple landfill of piling up and processes to pickling sludge；
This method simple and fast, it is with low cost, but this can cause large area land resource occupied, while potential danger is also produced to environment
Evil.
Utility model content
For the problems referred to above, this utility model provides a kind of acid of effective waste and pollution for reducing acid-washing stainless steel sludge
Wash the direct mummification of sludge and return smelting furnace system.
To reach above-mentioned purpose, smelting furnace system, the system bag are returned in a kind of direct mummification of pickling sludge of this utility model
Include Pulp pump, at least one dehydration equipment, stockyard of pickling sludge, loading transporting equipment, receiver bin, drying plant, rod
Sieve, store up area, bulk material ground blanking bin；
The Pulp pump feeding mouth is connected with mud pit, dehydration equipment feeding end connection described in the Pulp pump discharging opening；
The dehydration equipment discharge end is connected with the first belt feeder and the second belt feeder feeding end, first belt feeder and
Stockyard feeding end of the second belt feeder discharge end and the pickling sludge is connected；
The loading transporting equipment connects stockyard discharge end of the pickling sludge and the receiver bin feeding end respectively；
The receiver bin discharge end is connected with the 3rd belt feeder feeding end, and the 3rd belt discharge end is set with the drying
Standby feeding end connects；
The drying plant discharge end is connected with the bar screen feeding end, and the 4th belt feeder feeding end is arranged on the rod
Bar grizzl(e)y lower end；Under the bar screen sieve, sludge drops down onto feeding end on the 4th belt feeder, the discharge end of the 4th belt feeder and institute
State ground blanking bin feeding end connection；Described ground blanking bin discharge end is connected with high hopper feeding end；The high hopper discharging
End is connected with smelting furnace feeding end；
The bar screen discharge end is connected with area's feeding end of storing up.
Preferably, the dehydration equipment is filter press or belt filter press, the dehydration equipment is used for pickling sludge
The solid-liquid separation of water, and the aqueous guarantee value of sludge is 15%.
Preferably, the drying plant is rotary drum drying machine, three-cylinder drier or disk dehydrator；The drying plant
Inclination angle is 0～5 °, and drying medium is coal gas or natural gas；Sludge drying temperature≤700 DEG C of the drying plant, drying
Aqueous guarantee value≤3% of sludge.
Preferably, the bar screen is electronic bar screen, 0～5 ° of the inclination angle of the bar screen, feed particles diameter 0～
200mm, the rod gap of the bar screen is 80mm, and double-amplitude is 11 ± 1mm.
Preferably, the receiver bin is fixedly connected with hopper wall vibrator.
Preferably, the dehydrator upper end is also connected with dedusting pipeline, cyclone dust extractor and air-introduced machine in turn.
The system that smelting furnace is returned in the direct mummification of pickling sludge of the present utility model can effectively reduce acid-washing stainless steel sludge
Waste and pollution, can realize the comprehensive utilization of sludge again, improve the recovery rate of metal, reduce impact of the sludge to environment, have
Higher economic benefit and social benefit.
Description of the drawings
Fig. 1 is that smelting furnace system layout is returned in the direct mummification of this utility model pickling sludge；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is B-B sectional views in Fig. 1.
Specific embodiment
This utility model is further described with reference to Figure of description.
Embodiment 1
As shown in figure 1, smelting furnace system is returned in a kind of direct mummification of pickling sludge of the present embodiment, the system includes Pulp pump
4th, at least one dehydration equipment 3, stockyard of pickling sludge, load transporting equipment 5, receiver bin 6, drying plant 8, bar screen 9,
Store up area, blanking bin 13；
4 feeding mouth of the Pulp pump and mud pit UNICOM, 4 discharging opening of the Pulp pump and 3 feeding end of the dehydration equipment
Connection；
The discharging of the dehydration equipment 3 is connected by the first belt feeder 1 and 2 feeding end of the second belt feeder；First belt
Stockyard feeding end of the discharge end of machine 1 and second belt feeder 2 and the pickling sludge is connected；
The loading transporting equipment 5 connects stockyard discharge end of the pickling sludge and 6 pan feeding of the receiver bin respectively
End；
6 discharge end of the receiver bin is connected with 7 feeding end of the 3rd belt feeder；3rd belt feeder, 7 discharge end with it is described
8 feeding end of drying plant connects；
8 discharge end of the drying plant is connected with 9 feeding end of the bar screen, and 12 feeding end of the 4th belt feeder is located at described
9 lower end of bar screen；The lower sludge of the sieve of the bar screen 9 drops down onto 12 feeding end of the 4th belt feeder, 12 discharge end of the 4th belt feeder
It is connected with 13 feeding end of described ground blanking bin；Blanking bin 13 discharge end in described ground is connected with high hopper feeding end；The high position
Feed bin discharge end is connected with smelting furnace feeding end；
9 discharge end of the bar screen is connected with area's feeding end of storing up；
The dehydration equipment 3 is filter press or belt filter press, and the dehydration equipment 3 is used for consolidating for pickling sludge water
Liquid is separated, and the aqueous guarantee value of sludge is 15%；
The drying plant 8 is rotary drum drying machine, three-cylinder drier or disk dehydrator；8 inclination angle of the drying plant
For 0～5 °, drying medium is coal gas or natural gas；Sludge drying temperature≤700 DEG C of the drying plant, the sludge of drying
Aqueous guarantee value≤3%.
The bar screen 9 be electronic bar screen, 0～5 ° of the inclination angle of the bar screen 9, the rod gap of the bar screen 9
For 80mm, double-amplitude is 11 ± 1mm.
The receiver bin 6 is fixedly connected with hopper wall vibrator 14；
The pressurization of pickling sludge water is delivered to the dehydration equipment 3 by the present embodiment Pulp pump 4, and the dehydration equipment 3 is by sludge
It is dehydrated to 15% and the sludge of dehydration is pressed into into sludge cake；The sludge cake of compacting passes through the first belt feeder 1 and the second belt feeder 2
It is transported to stockyard of the pickling sludge to be dried, the sludge dried after a period of time is transported to described by the loader 5
Receiver bin 6, the receiver bin 6 are provided with hopper wall vibrator 14, it is ensured that sludge can be unloaded to the 3rd belt feeder 7 completely, the 3rd skin
Band machine 7 subsequently unloads sludge to the drying plant 8, and the sludge after drying is unloaded to the bar screen 9 automatically, the bar screen
9 grating spacing is 80mm, and above sludge landing is transported to the further hand breaking process of laydown area, stores up the sieve of the bar screen 9, sieves
Lower sludge is fallen on the 4th belt feeder 12, and the 4th belt feeder 12 will sieve lower sludge and subsequently be transported to ground blanking bin 13, described
Ground 13 bottom belt machine of blanking bin is added in smelting furnace when dewatered sludge is transported to smelting shop high hopper to smelt.
The present embodiment can effectively reduce slag former consumption, reduce raw metal consumption, improve the recovery rate of metal；By acidity
Smelting furnace is returned after the direct mummification of sludge, more traditional pellet forming process cost is lower；Realize the circulation after the process of pickling sludge drying
Utilize, will not be to environmental effects.
Embodiment 2
Based on above-described embodiment, described in the present embodiment, 8 upper end of dehydrator is also connected with dedusting pipeline 15, cyclone dust removal in turn
Device 10 and air-introduced machine 11；The dehydrator 8 dries the flue dust of the process generation of sludge under the effect of air-introduced machine 11, removing dust pipeline
Discharge after the process of 15 to cyclone dust extractor 10.
The dust produced in dehydrator cleaning is excluded by the present embodiment, it is ensured that the cleaning of dehydrator, extends dehydrator
Service life.
More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art the change that can readily occur in or is replaced in the technical scope that this utility model is disclosed
Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain for being defined is defined.
Claims (6)
1. smelting furnace system is returned in the direct mummification of a kind of pickling sludge, it is characterised in that：The system include Pulp pump, at least one
Dehydration equipment, stockyard of pickling sludge, load transporting equipment, receiver bin, drying plant, bar screen, store up area, blanking
Storehouse；
The Pulp pump feeding mouth is connected with mud pit, and the Pulp pump discharging opening is connected with the dehydration equipment feeding end；
The dehydration equipment discharge end is connected with the first belt feeder and the second belt feeder feeding end, first belt feeder and described
Stockyard feeding end of second belt feeder discharge end and the pickling sludge is connected；
The loading transporting equipment connects stockyard discharge end of the pickling sludge and the receiver bin feeding end respectively；
The receiver bin discharge end is connected with the 3rd belt feeder feeding end, and the 3rd belt discharge end is entered with the drying plant
The connection of material end；
The drying plant discharge end is connected with the bar screen feeding end, and the 4th belt feeder feeding end is arranged on the bar screen
Below；Under the bar screen sieve, sludge drops down onto the 4th belt feeder feeding end, the discharge end of the 4th belt feeder and the underground
Feed bin feeding end connects；Described ground blanking bin discharge end is connected with high hopper feeding end；The high hopper discharge end and smelting
Furnace feeding end connects；
The bar screen discharge end is connected with area's feeding end of storing up.
2. smelting furnace system is returned in a kind of direct mummification of pickling sludge as claimed in claim 1, it is characterised in that：The dehydration equipment
For filter press or belt filter press, solid-liquid separation of the dehydration equipment for pickling sludge water, and the aqueous guarantee of sludge
It is worth for 15%.
3. smelting furnace system is returned in a kind of direct mummification of pickling sludge as claimed in claim 1, it is characterised in that：The drying plant
For rotary drum drying machine, three-cylinder drier or disk dehydrator；The drying plant inclination angle is 0～5 °, and drying medium is coal gas
Or natural gas；Sludge drying temperature≤700 DEG C of the drying plant, aqueous guarantee value≤3% of sludge of drying.
4. smelting furnace system is returned in a kind of direct mummification of pickling sludge as claimed in claim 1, it is characterised in that：The bar screen is
Electronic bar screen, 0～5 ° of the inclination angle of the bar screen, the rod gap of the bar screen is 80mm, and double-amplitude is 11 ± 1mm.
5. smelting furnace system is returned in a kind of direct mummification of pickling sludge as claimed in claim 1, it is characterised in that：The receiver bin is solid
Surely it is connected with hopper wall vibrator.
6. smelting furnace system is returned in a kind of direct mummification of pickling sludge as claimed in claim 3, it is characterised in that：The drying plant
Upper end is also connected with dedusting pipeline, cyclone dust extractor and air-introduced machine in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095549.4U CN206069676U (en) | 2016-09-29 | 2016-09-29 | Smelting furnace system is returned in the direct mummification of pickling sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095549.4U CN206069676U (en) | 2016-09-29 | 2016-09-29 | Smelting furnace system is returned in the direct mummification of pickling sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206069676U true CN206069676U (en) | 2017-04-05 |
Family
ID=58441356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621095549.4U Expired - Fee Related CN206069676U (en) | 2016-09-29 | 2016-09-29 | Smelting furnace system is returned in the direct mummification of pickling sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206069676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277705A (en) * | 2016-09-29 | 2017-01-04 | 中冶华天南京工程技术有限公司 | Process and the system of smelting furnace is returned in the direct mummification of pickling mud |
-
2016
- 2016-09-29 CN CN201621095549.4U patent/CN206069676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277705A (en) * | 2016-09-29 | 2017-01-04 | 中冶华天南京工程技术有限公司 | Process and the system of smelting furnace is returned in the direct mummification of pickling mud |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |