CN107699645A - One kind reduces grain slag moisture content system - Google Patents
One kind reduces grain slag moisture content system Download PDFInfo
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- CN107699645A CN107699645A CN201710918045.0A CN201710918045A CN107699645A CN 107699645 A CN107699645 A CN 107699645A CN 201710918045 A CN201710918045 A CN 201710918045A CN 107699645 A CN107699645 A CN 107699645A
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- slag
- moisture content
- dry
- collector
- centrifugal separating
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of reduction grain slag moisture content system, including water granulated slag collector, centrifugal separating device, conveyer belt and dry slag collection device, wherein：Water granulated slag collector includes：Condensing plant, it is arranged on the upper end of water granulated slag collector；Filtrate (liquid, reservoir is linked with, and is provided with filter screen；Wet slag exports, and positioned at the top of water granulated slag collector Inner filter net, and is provided with scraper plate；Centrifugal separating device, the outlet of connection wet slag；Conveyer belt, the slag-drip opening of centrifugal separating device is connected, the dry slag that the slag-drip opening for centrifugal separating device is discharged is delivered to dry slag collection device；The evaporation tube road system that has surplus heat is set on conveyer belt, waste gas purging system has been passed through in the dry slag collection device, the application provides a kind of reduction grain slag moisture content system, with good drying effect, pollute small, the advantages of energy loss is low, the grain slag moisture content obtained by the application is low, can effectively reduce shipment and delivery cost.
Description
Technical field
The present invention relates to steel-making enterprise grain slag recycling field, and in particular to one kind reduces grain slag moisture content system.
Background technology
Grain slag belongs to one kind of industrial solid waste, because it has potential hydraulic gelling property, as manufacture of cement
Mixing material early have been widely used.But as the continuous improvement of ironmaking yield, grain slag yield increase substantially, cause big
Amount accumulation, turns into puzzlement enterprise development and a big problem that social environment is administered, and China's pig iron total output in 2010 is up to 5.8 hundred million
Ton, the amount of slag of the pig iron per ton calculate by 0.35 ton, then can produce 2.03 hundred million tons of blast furnace slag, and with huge heat energy, i.e. slag
Amount is big, and heat is big.
Finished product grain slag water content≤15%, is ground into during slag micropowder, it is necessary to set hot-blast stove in grain slag through grinding machine
Grain slag is dried processing, hot-blast stove produces heated-air drying grain slag by the heat for the coal gas equal energy source that burns, consumes a large amount of energy
Source, and produce corresponding equipment maintenance cost.
Meanwhile steel mill, due to containing substantial amounts of moisture in grain slag, causes water when grain slag is transported into grain slag returned enterprise
Slag weight is big, and shipment and delivery cost is high, have impact on the economic benefit of grain slag recovery.
The content of the invention
In view of this, the application provides a kind of reduction grain slag moisture content system, has good drying effect, pollutes small, the energy
The advantages of low is lost, the grain slag moisture content obtained by the application is low, can effectively reduce shipment and delivery cost.
To solve above technical problem, technical scheme provided by the invention is a kind of reduction grain slag moisture content system, including
Water granulated slag collector, centrifugal separating device, conveyer belt and dry slag collection device, wherein：
The water granulated slag collector is used to be passed through the grain slag after water quenching, including:
Condensing plant, it is arranged on the upper end of the water granulated slag collector；
Filtrate (liquid, reservoir is linked with, and is provided with filter screen；
Wet slag exports, the top of the filter screen in water granulated slag collector, and is provided with scraper plate；
Centrifugal separating device, connect the wet slag outlet；
Conveyer belt, the slag-drip opening of centrifugal separating device is connected, the dry slag that the slag-drip opening for centrifugal separating device is discharged is defeated
Deliver to dry slag collection device；
The evaporation tube road system that has surplus heat is set on the conveyer belt, waste gas purging system has been passed through in the dry slag collection device
System.
Preferably, the water granulated slag collector is cylindrical barrel structure, and the filter screen is being horizontally set on filtrate (liquid just
Top.
Preferably, the condensing plant is specially spiral condensate pipe, and the condensate pipe UNICOM is in the filtrate
Chi Zhong.
Preferably, gap, the spilling water are additionally provided with below the condensing plant on the water granulated slag collector
The second filter screen is provided with mouthful, the gap UNICOM is in the reservoir.
Preferably, Backwash pipeline, reservoir described in the Backwash pipeline UNICOM, institute are additionally provided with below the filter screen
State and electric control pump is additionally provided with Backwash pipeline.
Preferably, the centrifugal separating device also includes centrifugate outlet, reservoir described in the centrifugate outlet UNICOM.
Preferably, the hot-air through steel mill's waste-heat is passed through in the waste heat evaporation pipe-line system, the waste heat steams
Hair pipeline is uniformly laid on the bottom of the conveyer belt.
Preferably, the waste gas purging system has been passed through steel mill's high-temp waste gas, and the high-temp waste gas is from dry slag collection device
Bottom be passed through in the dry slag collection device, purging drying is carried out to dry slag.
Compared with prior art, its detailed description is as follows by the application：
Disclosure is a kind of to reduce grain slag moisture content system, including water granulated slag collector, centrifugal separating device, conveyer belt and
Dry slag collection device, water granulated slag collector go out slurry and filtrate for standing separation, and centrifugal separating device is dry for centrifuging out
Slag and centrifugate, conveyer belt evaporate pipe-line system by waste heat and heating evaporation are carried out to dry slag, and dry slag collection device is interior by useless
Gas purging system carries out purging drying, has that moisture content is low by the dried grain slag of the system, effectively reduces shipment and delivery cost
Advantage, while energy consumption can also be saved.
Filtrate, centrifugate are passed through reservoir, and condensing plant utilizes vapours of the liquid in reservoir to grain slag after water quenching
Condensed；Waste gas purging system has been passed through steel mill's high-temp waste gas, and the high-temp waste gas is passed through described dry from waste gas purging system
In slag collection device, purging drying is carried out to dry slag using the waste heat in waste gas.
The application takes full advantage of the moisture in grain slag, while condenses and recycle grain slag by the steam of thermal evaporation, has
The advantages of small, pollution is small, and utilization rate is high is discharged, waste gas purging system reduces the content of pernicious gas in waste gas, so as to reduce
Waste gas discharges pollution on the environment.
Brief description of the drawings
Fig. 1 is the schematic diagram of the application.
Embodiment
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
Applying example, the present invention is described in further detail.
As shown in figure 1, a kind of reduce grain slag moisture content system, including water granulated slag collector 1, centrifugal separating device 2, conveyer belt
3rd, dry slag collection device 4 and reservoir, wherein：
The water granulated slag collector 1 is cylindrical barrel structure, for being passed through the grain slag after water quenching, including:
Condensing plant 11, specially spiral condensate pipe, the upper end of the water granulated slag collector 1 is arranged on, it is described cold
Solidifying equipment 11 has been passed through condensed water, and the grain slag temperature after water quenching is higher, and moisture therein is formed whole by thermal evaporation and carried
Tiny particles content, vapor is vaporized through the bottom that the liquefaction of condensing plant 11 is back to water granulated slag collector 1 upwards, spiral cold
Condensate pipe is advantageous to vapor and is fully cooled liquefaction, and the condensed water of different height can be set according to the grain slag discharge capacity of enterprise
Pipe, ensure that vapor liquefaction is abundant, reduce discharge and pollution；
Filtrate (liquid 12, filter screen 13 are horizontally set on the surface of filtrate (liquid 12, and the liquid in grain slag passes through filter screen 13
Filtering, is emitted into reservoir 5 from filtrate (liquid；
Wet slag outlet 14, the top of the filter screen 13 in water granulated slag collector 1, and scraper plate 15 is provided with, by preliminary
Still there is moisture, scraper plate scrapes slimy wet slag from wet slag outlet 14 in the wet slag of standing separation；
Gap 15, the side wall of water granulated slag collector 1 is arranged on, and positioned at the lower section of the condensing plant 11, it is described to overflow
The second filter screen 16 is provided with the mouth of a river 15, the UNICOM of gap 15 is in the reservoir 5, when grain slag runs up to a certain amount of,
Discharged because the slurry accumulation of bottom influences liquid from filtrate (liquid 12, supernatant liquor passes through the mistake of the second filter screen 16 from gap 15
It is emitted into after filter in reservoir 5, the clear liquid for avoiding standing in the water granulated slag collector 1 is accumulated, and further avoids and bottom slurry
The problem of centrifugal separating device 2 causes the operating load of centrifugal separating device 2 high is delivered to together；
Backwash pipeline 17, the lower section of filter screen 13 is arranged on, and connects the reservoir 5, the Backwash pipeline 17
On be provided with electric control pump 18, for the liquid pumping in reservoir 5 reversely to be rushed by Backwash pipeline 17 to filter screen 13
Wash, avoiding slurry from being deposited in for a long time on filter screen 13 causes filter screen 13 not work effectively.
Centrifugal separating device 2, the wet slag outlet 14 is connected, for the slurry of the initial gross separation of water granulated slag collector 1 to be passed through
Centrifugal rotation isolates dry slag and centrifugate, and dry slag delivers to conveyer belt 3 from slag-drip opening 21, and centrifugate conveys from centrifugate outlet 22
To reservoir 5.
Conveyer belt 3, the dry slag for the slag-drip opening 21 of centrifugal separating device 2 to be discharged are delivered to dry slag collection device 4；
The waste heat evaporation pipe-line system 31 for the bottom for being uniformly laid on the conveyer belt 3 is provided with the conveyer belt 3,
The hot-air through steel mill's waste-heat is passed through in the waste heat evaporation pipe-line system 31, a kind of preferred side as the application
Case, the pipeline of the waste heat vapo(u)rization system 31 pass through steel slag water quenching device, and absorb the heat of steel slag water quenching device release, heating
Air therein, hot-air heat to dry slag by waste heat evaporation pipe-line system 31, make the moisture in dry slag is heated to steam
Hair.
The dry slag for having communicated band 3 to convey, the bottom of the dry slag collection device 4 are collected in the dry slag collection device 4
Waste gas purging system 41 is passed through, the waste gas purging system 41 is specially uniformly laid on the dry bottom of slag collection device 4
Pipeline, be provided with some stomatas on the pipeline, the uniform waste gas purging system 41 has been passed through steel mill's high-temp waste gas, described
High-temp waste gas is passed through in the dry slag collection device 4 from waste gas purging system 41, and high-temp waste gas discharges from stomata, using useless
Waste heat in gas carries out purging drying to dry slag.
It is cellular due to dry slag simultaneously as have the pollutant such as substantial amounts of dust, sulfide in steel mill's high-temp waste gas
Structure, certain suction-operated can be played to pernicious gas, therefore, dry slag collection device 4 disclosed in the present application is dry in drying
The content of pernicious gas in waste gas can also be reduced while slag, so as to reduce waste gas discharge pollution on the environment.
Wherein, the condensed water that the condensing plant 11 is passed through is preferably the liquid in reservoir, is recycled so as to reach
Filtrate, the consumption of saving water resource, save the use cost for reducing grain slag system.
The application provide it is a kind of reduce grain slag moisture content system, there is good drying effect, pollutes small, low excellent of energy loss
Point, the grain slag moisture content obtained by the application is low, can effectively reduce shipment and delivery cost.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (8)
1. one kind reduce grain slag moisture content system, it is characterised in that including water granulated slag collector, centrifugal separating device, conveyer belt and
Dry slag collection device, wherein：
The water granulated slag collector is used to be passed through the grain slag after water quenching, including:
Condensing plant, it is arranged on the upper end of the water granulated slag collector；
Filtrate (liquid, reservoir is linked with, and is provided with filter screen；
Wet slag exports, the top of the filter screen in water granulated slag collector, and is provided with scraper plate；
Centrifugal separating device, connect the wet slag outlet；
Conveyer belt, the slag-drip opening of centrifugal separating device is connected, the dry slag that the slag-drip opening for centrifugal separating device is discharged is delivered to
Dry slag collection device；
The evaporation tube road system that has surplus heat is set on the conveyer belt, waste gas purging system has been passed through in the dry slag collection device.
2. a kind of reduction grain slag moisture content system according to claim 1, it is characterised in that the water granulated slag collector is circle
Cylindricality tubular structure, the filter screen are horizontally set on the surface of filtrate (liquid.
3. a kind of grain slag moisture content system is reduced according to claim 1, it is characterised in that the condensing plant is specially
Spiral condensate pipe, the condensate pipe UNICOM is in the reservoir.
4. a kind of reduction grain slag moisture content system according to claim 3, it is characterised in that the water granulated slag collector is upper
Gap is additionally provided with below the condensing plant, the second filter screen, the gap UNICOM are provided with the gap
In the reservoir.
5. a kind of reduction grain slag moisture content system according to claim 1, it is characterised in that also set up below the filter screen
There is a Backwash pipeline, reservoir described in the Backwash pipeline UNICOM, be additionally provided with electric control pump in the Backwash pipeline.
6. a kind of reduction grain slag moisture content system according to claim 1, it is characterised in that the centrifugal separating device is also
Exported including centrifugate, reservoir described in the centrifugate outlet UNICOM.
A kind of 7. reduction grain slag moisture content system according to claim 1, it is characterised in that the waste heat evaporation pipeline system
The hot-air through steel mill's waste-heat is passed through in system, the waste heat evaporation pipeline is uniformly laid on the bottom of the conveyer belt
Portion.
8. a kind of reduction grain slag moisture content system according to claim 1, it is characterised in that the waste gas purging system leads to
Ru You steel mills high-temp waste gas, the high-temp waste gas are passed through in the dry slag collection device from the bottom of dry slag collection device, to dry
Slag carries out purging drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918045.0A CN107699645B (en) | 2017-09-29 | 2017-09-29 | A kind of reduction grain slag moisture content system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918045.0A CN107699645B (en) | 2017-09-29 | 2017-09-29 | A kind of reduction grain slag moisture content system |
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| CN107699645A true CN107699645A (en) | 2018-02-16 |
| CN107699645B CN107699645B (en) | 2019-08-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2448846Y (en) * | 2000-11-10 | 2001-09-19 | 张维田 | Metallurgical slag treatment apparatus |
| CN101550461A (en) * | 2009-04-13 | 2009-10-07 | 杭州锅炉集团股份有限公司 | Recovery method of blast furnace slag water residual heat and method thereof |
| CN103555870A (en) * | 2013-10-30 | 2014-02-05 | 江苏沙钢集团有限公司 | High-temperature slag water-quenching condensation technology and high-temperature slag water-quenching condensation system free of cooling tower |
-
2017
- 2017-09-29 CN CN201710918045.0A patent/CN107699645B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2448846Y (en) * | 2000-11-10 | 2001-09-19 | 张维田 | Metallurgical slag treatment apparatus |
| CN101550461A (en) * | 2009-04-13 | 2009-10-07 | 杭州锅炉集团股份有限公司 | Recovery method of blast furnace slag water residual heat and method thereof |
| CN103555870A (en) * | 2013-10-30 | 2014-02-05 | 江苏沙钢集团有限公司 | High-temperature slag water-quenching condensation technology and high-temperature slag water-quenching condensation system free of cooling tower |
Non-Patent Citations (2)
| Title |
|---|
| 刘全兴 编著: "《高炉开炉与停炉操作知识问答》", 31 January 2013, 冶金工业出版社 * |
| 王茂华 等: "高炉炉渣处理方法评述", 《黑龙江冶金》 * |
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| CN107699645B (en) | 2019-08-13 |
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