CN200996021Y - Environmental-protecting blast-furnace cinder treating system - Google Patents

Environmental-protecting blast-furnace cinder treating system Download PDF

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Publication number
CN200996021Y
CN200996021Y CNU2006201726581U CN200620172658U CN200996021Y CN 200996021 Y CN200996021 Y CN 200996021Y CN U2006201726581 U CNU2006201726581 U CN U2006201726581U CN 200620172658 U CN200620172658 U CN 200620172658U CN 200996021 Y CN200996021 Y CN 200996021Y
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CN
China
Prior art keywords
water pipe
water
granulation
slag
tank
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Expired - Fee Related
Application number
CNU2006201726581U
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Chinese (zh)
Inventor
刘谭璟
周强
林昊
彭小平
符伟
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Priority to CNU2006201726581U priority Critical patent/CN200996021Y/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/074—Tower structures for cooling, being confined but not sealed
    • 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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  • Furnace Details (AREA)
  • Manufacture Of Iron (AREA)

Abstract

An environment-friendly slag processing system of blast furnace consists of a red slag channel (1), a granulation box (2), a granulation groove (4), a slag water pipe (5), a hot water groove (6), a first water pipe (7), a granulation return pump (8), a condensation pump (9), a second water pipe (10), a cooling tower (11), a belt conveyer (12), a dehydration drum (14), a condensing tower (15), a third water pipe (18) and a buffer tank (19). The granulation box (2) is arranged under the discharging port of the red slag channel (1). A spray hole is arranged on the granulation box (2). The granulation groove (4) is arranged below the condensing tower (15). One end of the slag water pipe (5) communicates with the collection pipe below the granulation groove (4). The other end of the slag water pipe (5) communicates with the distributor (13) of the dehydration drum (14). The belt conveyer (12) is arranged in the belt conveyer (12) and the hot water groove (6) is arranged below the dehydration drum (14). One end of the first water pipe (7) communicates with the hot water groove (6) and the other end of the first water pipe (7) communicates with the inlet of the cooling tower (11). The granulation return pump (8) is arranged on the first water pipe (7). One end of the second water pipe (10) communicates with the outlet of the cooling tower (11) and the other end of the second water pipe (10) communicates with the spraying pipe (16) of the condensing tower (15). An atomizer is arranged on the spraying pipe (16). The condensing pump (9) is arranged on the second water pipe (10). One end of the third water pipe (18) communicates with the condensing-water collection bucket (17) and the other end of the third water pipe (18) communicates with the inlet of the buffer tank (19).

Description

A kind of environment friendly blast furnace slag treatment system
Technical field
The utility model belongs to the metallurgical iron-making devices field, is specifically related to a kind of environment friendly blast furnace slag treatment system.
Background technology
At present; domestic environment friendly blast furnace slag treatment system is mainly by red-slag channel; the granulation case; shot tank (pond); dewatering drum; vapor condensation recovery system (condensing tower); water pump; cooling tower; compositions such as granulation condensation cycle water pipe; contain slag in the red-slag channel; the output terminal of red-slag channel is positioned at the input terminus top of shot tank (pond); be provided with the granulation case between the output terminal of red-slag channel and the input terminus of shot tank; the granulation case is provided with spout hole; when the slag of red-slag channel falls into shot tank; high pressure water in the granulation case sprays through spout hole; slag is become grain slag with high pressure water towards broken shrend; slag-water slurry is further cooling in shot tank, in pipeline enters the divider of dewatering drum.The water of rotary drum bottom makes it to cool off once more.And the water trap that sieve plate is housed rotates and upgrades filtration.When rotary drum forwarded vertex to, grain slag fell on the interior rotary conveyor of rotary drum, is transported to the grain slag stockyard again; Filterable water is collected in the hot water tank; The steam that produces in the slag granulation process enters in the condensing tower on shot tank top, is collected into surge tank after cooling water condensation; Water in water of condensation and the hot water tank pumps into cooling tower through condensation and granulation back water pump respectively and cools off, again by the granulation pump with cooled water is sent into the granulation case with condensation pump and condensing tower recycles.Granulated slag in the hot water tank is sent into water trap by the recycle pump extraction and is refiltered, and prevents that the grain slag powder from depositing in hot water tank.
This technology more complicated (as shown in Figure 1, its system is as shown in Figure 3), this technology is established granulation and 2 circulation loops of condensation, and quantity of circulating water is big, and the energy consumption height takes up an area of greatly, and investment is high.
Summary of the invention
The purpose of this utility model is to provide the environment friendly blast furnace slag treatment system that a kind of system forms simply, the flushing cinder quality is good, environmental protection effect is good, energy consumption is low, obviously reduce investment outlay and take up an area of.
To achieve these goals, the technical solution of the utility model: a kind of environment friendly blast furnace slag treatment system, it comprises red-slag channel 1, granulation case 2, shot tank 4, pulp water pipe 5, hot water tank 6, first water pipe 7, granulation back water pump 8, condensation pump 9, second water pipe 10, cooling tower 11, rotary conveyor 12, dewatering drum 14, condensing tower 15, the 3rd water pipe 18, surge tank 19, be provided with granulation case 2 below the output terminal portion of red-slag channel 1, the granulation case is provided with spout hole, and shot tank 4 is positioned at condensing tower 15 belows; One end of pulp water pipe 5 is connected with the conduit of shot tank bottom, and the other end of pulp water pipe 5 is connected with the divider 13 of dewatering drum 14; Be provided with rotary conveyor 12 in the dewatering drum, hot water tank 6 is positioned at dewatering drum 14 belows; One end of first water pipe 7 is connected with hot water tank 6, and the other end of first water pipe 7 is connected with the input terminus of cooling tower 11, and first water pipe 7 is provided with granulation back water pump 8; One end of second water pipe 10 is connected with the output terminal of cooling tower 11, and the other end of second water pipe 10 communicates with the water jet standpipe 16 of condensing tower 15, and water jet standpipe 16 is provided with atomizing nozzle, and second water pipe 10 is provided with condensation pump 9; One end of the 3rd water pipe 18 is connected with the water of condensation collection bucket 17 of condensing tower 15, and the other end of the 3rd water pipe 18 is connected with the input terminus of surge tank 19; It is characterized in that: the output terminal of surge tank 19 is connected with an end of the 4th water pipe 21, and the other end of the 4th water pipe 21 is connected with granulation case 2.
Be provided with a grade slag plate in the described shot tank 4.
The output terminal of described red-slag channel 1 is positioned at the top, input end of sluice 3, and the output terminal portion of sluice 3 is positioned at condensing tower 15 belows and is positioned at the top of shot tank 4.
The 4th water pipe 21 is provided with granulation pump 20.
The steam that the utility model adopts the condensing tower of sealing that granulation the is produced cooling of spraying water, native system does not have steam substantially and enters in the atmosphere with other obnoxious flavoures; The flushing cinder water cycle is used, and production process does not have the sewage discharge, helps environment protection, and environmental protection effect is good.
Compare the major advantage of this blast-furnace slag processing system with traditional blast-furnace slag processing system:
1) in the utility model system with the water after the condensed steam as flushing cinder granulation water, quantity of circulating water reduces 1/2, therefore needing the refrigerative water yield be 1/2 of traditional technology, the flow of cooling tower reduces greatly, takes up an area of and investment obviously reduces.
2) the pump group of the utility model system is few one group, and system is simpler, and energy consumption reduces.
3) turnover of cooling tower all respectively is one group of pump in the utility model system, and there is not the phase mutual interference in the easy balance of the water yield of total system.
4) the utility model has adopted sluice and shelves slag plate, the grain slag better quality, and help improving dehydrating effect.
The beneficial effects of the utility model are: system form simple, the flushing cinder quality is good, environmental protection effect is good, energy consumption is low, obviously reduce investment outlay and the easy balance of the water yield of occupation of land, total system.
Description of drawings
Fig. 1 is the process flow sheet of existing blast-furnace slag processing system
Fig. 2 is a process flow sheet of the present utility model
Fig. 3 is the structural representation of existing blast-furnace slag processing system
Fig. 4 is a structural representation of the present utility model
Among the figure: 1-red-slag channel, 2-granulation case, 3-sluice, 4-shot tank; 5-pulp water pipe, 6-hot water tank, 7-first water pipe, 8-granulation back water pump; the 9-condensation pump, 10-second water pipe, 11-cooling tower, 12-rotary conveyor; the 13-divider, 14-dewatering drum, 15-condensing tower; the 16-water jet standpipe, 17-water of condensation collection bucket, 18-the 3rd water pipe; the 19-surge tank, 20-granulation pump, 21-the 4th water pipe.
Embodiment
As shown in Figure 4, a kind of environment friendly blast furnace slag treatment system, it comprises red-slag channel 1, granulation case 2, sluice 3, shot tank 4, pulp water pipe 5, hot water tank 6, first water pipe 7, granulation back water pump 8, condensation pump 9, second water pipe 10, cooling tower 11, rotary conveyor 12, dewatering drum 14, condensing tower 15, the 3rd water pipe 18, surge tank 19, granulation pump 20, the 4th water pipe 21, the output terminal of red-slag channel 1 is positioned at the top, input end of sluice 3, be provided with granulation case 2 below the output terminal portion of red-slag channel 1, the granulation case is provided with spout hole, the output terminal portion of sluice 3 is positioned at condensing tower 15 belows and is positioned at the top of shot tank 4, shot tank 4 is positioned at condensing tower 15 belows, is provided with a grade slag plate in the shot tank 4; One end of pulp water pipe 5 is connected with the conduit of shot tank bottom, and the other end of pulp water pipe 5 is connected with the divider 13 of dewatering drum 14; Be provided with rotary conveyor 12 in the dewatering drum, hot water tank 6 is positioned at dewatering drum 14 belows; One end of first water pipe 7 is connected with hot water tank 6, and the other end of first water pipe 7 is connected with the input terminus of cooling tower 11, and first water pipe 7 is provided with granulation back water pump 8; One end of second water pipe 10 is connected with the output terminal of cooling tower 11, and the other end of second water pipe 10 communicates with the water jet standpipe 16 of condensing tower 15, and water jet standpipe 16 is provided with atomizing nozzle, and second water pipe 10 is provided with condensation pump 9; One end of the 3rd water pipe 18 is connected with the water of condensation collection bucket 17 of condensing tower 15, and the other end of the 3rd water pipe 18 is connected with the input terminus of surge tank 19; The output terminal of surge tank 19 is connected with an end of the 4th water pipe 21, and the other end of the 4th water pipe 21 is connected with granulation case 2, and the 4th water pipe 21 is provided with granulation pump 20.
2 water circulating pumps are equipped with in the bottom of hot water tank, and water circulating pump links to each other with recirculation pipe, and the output terminal of circulating pipe is positioned at shot tank.Granulated slag in the hot water tank is sent into shot tank by the recycle pump extraction and is refiltered through rotary drum, prevents that the grain slag powder from depositing in cooling tower.
As shown in Figure 2, environment friendly blast furnace slag treating process: the granulation case shower cooling water that the red slag that blast furnace produces is installed in below the red-slag channel end cools off shrend fast, slag after the shrend and water are earlier through sluice, thereafter after pouring on the shelves slag plate in the shot tank further fragmentation, enter in the conduit of shot tank bottom; Slag-water slurry in the conduit enters the pulp water pipe and enters the divider of dewatering drum along the pulp water pipe then, the water of dewatering drum bottom makes slag-water slurry continue cooling, and the water trap that sieve plate is housed rotates and upgrades filtration, when dewatering drum forwards high point to, grain slag falls on the interior rotary conveyor of dewatering drum, is transported to the grain slag stockyard again; The filterable water of dewatering drum is collected in the hot water tank, water in the hot water tank pumps into cooling tower by first water pipe, granulation back water pump and cools off, after the cooling tower cooling, by second water pipe, condensation pump cooled water is sent into atomizing nozzle in the condensing tower again, atomizing nozzle carries out condensation to the steam that produces in the granulating; Water droplet after the vapor condensation is guided to surge tank by the water of condensation collection bucket through the 3rd water pipe, and the water of surge tank is beaten to the granulation case through the 4th water pipe, granulation pump and recycled.
Main technique equipment:
1) sluice:
Adopt steel construction groove and support.The groove top is provided with seal bootr, prevents that steam is excessive.Sluice is about 7m, in establish the carborundum liner plate of anti-erosive wear.
2) granulation case:
The granulation case is made up of the orifice plate that is covered with porous reducing shower nozzle, housing, conduit coupling.The scope of perforate on the orifice plate, the branch Bouyei slag trajectory mark in the size of eyelet, angle and hole presents non-homogeneous state with the different of slag flow section.
3) shot tank:
Be positioned at the condensing tower below, diameter is about the cylinder of 6m.In establish strike plate, grid and grain slag pipeline.Slag-water slurry is in this further fragmentation and in pipeline flows into the rotary drum divider.
4) condensing tower:
Be positioned at the shot tank top, diameter is about the cylinder of 6m, and total height is about 30m.Comprise that water of condensation collection bucket, 2 groups of water jet standpipes and top diffuse valve.
5) divider:
Divider is one section tapered rectangular pipe.The below of pipe has the hole that section does not wait.In order to keep the shape of perforate section, be embedded with the ceramic wear-resisting liner plate.Pulp water stream is evenly distributed in slag-water slurry in the whole dewatering drum, thereby reaches dehydrating effect preferably by these bottom perforate, also can make the screen cloth wearing and tearing simultaneously evenly, the activity ratio height.
6) dewatering drum:
Dewatering drum is made up of the blade bucket of the band filter screen of metal frame, double-layer filtering net cylindrical shell and drum internal perisporium.
7) rotary conveyor:
Conveyor passes rotary drum.Slag sand after the rotary drum dehydration falls into conveyor, and then is transported to cinder yard through many conveyors, is transported to the user by train or automobile.
8) hot water tank:
Hot water tank is located at the below of dewatering drum, collects the hot water that leaches from dewatering drum.Hot water tank is made by concrete, is divided into 3 lattice, and preceding 2 lattice separate with steel plate, and volume is about 100m 3, 2 water circulating pumps are equipped with in the bottom, and water circulating pump pumps into shot tank once more with the water of hot water tank and filters once more through rotary drum, with the quality of the water that guarantees to flow back to cooling tower.Last 1 lattice volume is about 100m 3, the granulation back water pump is established in the bottom.
9) surge tank:
The water that collection is reclaimed from condensing tower.Surge tank is about 40m 3

Claims (4)

1. environment friendly blast furnace slag treatment system, it comprises red-slag channel (1), granulation case (2), shot tank (4), pulp water pipe (5), hot water tank (6), first water pipe (7), granulation back water pump (8), condensation pump (9), second water pipe (10), cooling tower (11), rotary conveyor (12), dewatering drum (14), condensing tower (15), the 3rd water pipe (18), surge tank (19), be provided with granulation case (2) below the output terminal portion of red-slag channel (1), the granulation case is provided with spout hole, and shot tank (4) is positioned at condensing tower (15) below; One end of pulp water pipe (5) is connected with the conduit of shot tank bottom, and the other end of pulp water pipe (5) is connected with the divider (13) of dewatering drum (14); Be provided with rotary conveyor (12) in the dewatering drum, hot water tank (6) is positioned at dewatering drum (14) below; One end of first water pipe (7) is connected with hot water tank (6), and the other end of first water pipe (7) is connected with the input terminus of cooling tower (11), and first water pipe (7) is provided with granulation back water pump (8); One end of second water pipe (10) is connected with the output terminal of cooling tower (11), and the other end of second water pipe (10) communicates with the water jet standpipe (16) of condensing tower (15), and water jet standpipe (16) is provided with atomizing nozzle, and second water pipe (10) is provided with condensation pump (9); One end of the 3rd water pipe (18) is connected with the water of condensation collection bucket (17) of condensing tower (15), and the other end of the 3rd water pipe (18) is connected with the input terminus of surge tank (19); It is characterized in that: the output terminal of surge tank (19) is connected with an end of the 4th water pipe (21), and the other end of the 4th water pipe (21) is connected with granulation case (2).
2. a kind of environment friendly blast furnace slag treatment system according to claim 1 is characterized in that: described shot tank is provided with a grade slag plate in (4).
3. a kind of environment friendly blast furnace slag treatment system according to claim 1; it is characterized in that: the output terminal of described red-slag channel (1) is positioned at the top, input end of sluice (3), and the output terminal portion of sluice (3) is positioned at condensing tower (15) below and is positioned at the top of shot tank (4).
4. a kind of environment friendly blast furnace slag treatment system according to claim 1 is characterized in that: the 4th water pipe (21) is provided with granulation pump (20).
CNU2006201726581U 2006-12-28 2006-12-28 Environmental-protecting blast-furnace cinder treating system Expired - Fee Related CN200996021Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100445399C (en) * 2006-12-28 2008-12-24 中冶南方工程技术有限公司 Environment friendly blast furnace slag treating process and system
CN101649364B (en) * 2009-09-04 2011-08-10 中冶赛迪工程技术股份有限公司 Blast furnace slag processing device
CN102269529A (en) * 2011-07-20 2011-12-07 北京中冶设备研究设计总院有限公司 Closed loop control method and device for high-temperature slag flow and cooling water amount
CN104651551A (en) * 2015-03-13 2015-05-27 山东钢铁股份有限公司 Constant-liquid level control device for slag-water mixture of granulation tower
TWI616536B (en) * 2013-07-01 2018-03-01 保羅伍斯股份有限公司 Granulation installation and blast furnace plant comprising the same
CN110181065A (en) * 2019-04-22 2019-08-30 武汉科技大学 A kind of metallurgy pulp water knife milling method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100445399C (en) * 2006-12-28 2008-12-24 中冶南方工程技术有限公司 Environment friendly blast furnace slag treating process and system
CN101649364B (en) * 2009-09-04 2011-08-10 中冶赛迪工程技术股份有限公司 Blast furnace slag processing device
CN102269529A (en) * 2011-07-20 2011-12-07 北京中冶设备研究设计总院有限公司 Closed loop control method and device for high-temperature slag flow and cooling water amount
TWI616536B (en) * 2013-07-01 2018-03-01 保羅伍斯股份有限公司 Granulation installation and blast furnace plant comprising the same
CN104651551A (en) * 2015-03-13 2015-05-27 山东钢铁股份有限公司 Constant-liquid level control device for slag-water mixture of granulation tower
CN110181065A (en) * 2019-04-22 2019-08-30 武汉科技大学 A kind of metallurgy pulp water knife milling method
CN110181065B (en) * 2019-04-22 2022-04-26 武汉科技大学 Metallurgical slag water jet milling method

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Granted publication date: 20071226

Termination date: 20131228