CN106119448A - A kind of method that hot steel slag quickly cools down - Google Patents
A kind of method that hot steel slag quickly cools down Download PDFInfo
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- CN106119448A CN106119448A CN201610601881.1A CN201610601881A CN106119448A CN 106119448 A CN106119448 A CN 106119448A CN 201610601881 A CN201610601881 A CN 201610601881A CN 106119448 A CN106119448 A CN 106119448A
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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
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a kind of method that hot steel slag quickly cools down, comprise the following steps；(1) dress slag；Hot steel slag is poured in vexed slag bath；(2) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath；(3) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out decocting in water；(4) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.The present invention has water-saving efficient, and operation cost is relatively low, job safety and the preferable feature of slag separating effect.
Description
Technical field
The present invention relates to steelmaking technical field, a kind of method that hot steel slag quickly cools down.
Background technology
Preprocess method in pretreatment of slag part has: hot application method, hot vexed method, drum process, autoclave method and wind quenching method
Deng, the preprocess method being generally used now is exactly hot application method and the vexed method of heat.Hot application method, is exactly briefly hot application place
On hot melt slag, by the method fetched water, be allowed to quickly cool down and part efflorescence, but owing to floor space is relatively big, and adopt
With open work, airborne dust and the problem of high alkalinity water pollution can be produced.The vexed method of heat is the pretreatment of slag work just having the nearly more than ten years
Skill；Owing to hot vexed method operation is carried out in workshop, greatly reducing dust pollution to external world, vexed slag bath has closed circuit plumbing
System, it also avoid the pollution of high alkalinity water.
As depicted in figs. 1 and 2, the vexed slag system in a set of 4,000,000 tons of steel/years of coupling, there are 6 vexed slag baths (1 '), each vexed
Slag bath (1 ') has a collecting gutter (2 '), the drainage pipeline (3 ') that collecting gutter (2 ') shares with 6 vexed slag baths (1 ') to be connected, row
The big sump (4 ') of waterpipe (3 ') again with is connected, and vexed slag bath (1 '), drainage pipeline (3 ') and big sump (4 ') are all
Reinforced concrete structure.Needed for such 6 vexed slag baths and auxiliary facility thereof, expense is more than 30,000,000, builds input the biggest.
Above 6 vexed slag baths carry out successively rebasing, dress slag, fetch water, vexed slag and slagging tap, so recycle；This job stream
Cheng Caiyong fetches water from above, and water becomes the steam of 100 DEG C and drains, and takes away the heat of slag simultaneously, steam below early stage of fetching water
On gush, water oozes under being not easy, and has arrived middle and late stage, and major part flows away after oozing under water the most in vain；Backwater again while fetching water, fetches water
Amount typically even goes up kiloton at hundreds of ton, and backwater amount is also at hundreds of ton, and the water yield that slag per ton consumes, at about 1.2 tons, is fetched water
Vexed more than 20 hours slag used time, time-consuming water wasting again；In cyclic process, for slag rate of cooling faster, often turn over primary slag, also
With excavator hot slag turned over and dial so that it is release substantial amounts of heat so that operation cost is higher.
The vexed method of existing heat is fetched water, the method using all standing spray, more than 1,000 degree Celsius (the highest melted in slag bath
1600 DEG C) slag, being all poured onto less than 100 degrees Celsius with water does not has red slag.Fetch water process, especially arrive middle and late stage, have 2/
The water of more than 3 carries the ash in more slag and soluble substance, flows to big sump by collecting gutter, drainage pipeline, at the bottom of pond such as
Really there are hydrops, hot slag to sprinkle into water cover to be lived, cause the no small blast of power.Due to the backwater amount in system described above
Relatively big, containing the ash deposited in a large number in the water returned, the ash carried in backwater easily blocks water return pipeline, and water return pipeline
Cleaning work can increase again the operation cost of system.During in pond, hot slag is fetched water, substantial amounts of steam of emerging,
Affect the operation of other slag baths in workshop；Closeing the lid when fetching water, fuel gas is accumulated certain in pond in the gap of slag
After amount, can be lighted by following warm sludge and the blast that power is the biggest occurs, danger coefficient is higher.
Therefore, the cooling of current hot steel slag, water consumption is relatively big, the problem that operation cost is higher and danger coefficient is bigger.
Summary of the invention
It is an object of the invention to, it is provided that a kind of method that hot steel slag quickly cools down, it has water-saving efficient, runs into
This is relatively low, job safety and the preferable feature of slag separating effect.
Technical scheme: a kind of method that hot steel slag quickly cools down, comprises the following steps；
(1) dress slag；Hot steel slag is poured in vexed slag bath；
(2) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath；
(3) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out
Decocting in water；
(4) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.
In the method that aforesaid hot steel slag quickly cools down, also vexed slag bath was carried out rebasing before step (1)；Including
Following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
In the method that aforesaid hot steel slag quickly cools down, to slag tap, including following step after described step (4)
Suddenly；
(a) draining；Start suction pump, the hydrops in vexed slag bath is sent into cistern；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is produced stand-by.
In the method that aforesaid hot steel slag quickly cools down, in described step (1), often it is finished down once heat to vexed slag bath introversion
State slag, will be stirred the hot steel slag in vexed slag bath.
In the method that aforesaid hot steel slag quickly cools down, after described dress slag, fetch water before vexed to vexed slag bath upper cover
The lid of slag bath is provided with chimney connector, is used for connecting chimney, facilitates and arranges outside steam.
In the method that aforesaid hot steel slag quickly cools down, the lid of described vexed slag bath is provided with vent, at vent
Connect through ventilation duct and have air-introduced machine, be used for accelerating discharge of steam.
In the method that aforesaid hot steel slag quickly cools down, during described dress slag, to check whether vexed slag bath is filled, if vexed slag
Pond is underfilled with, and proceeds to fill slag operation.
In the method that aforesaid hot steel slag quickly cools down, in described step (4), vexed scoriform state keeps to hot steel slag temperature
Degree drops to stop when less than 90 DEG C, stops when preferably 80～85 DEG C.
In the method that aforesaid hot steel slag quickly cools down, described total water consumption is below 0.4 ton/ton slag.
In the method that aforesaid hot steel slag quickly cools down, described vexed slag bath inwall is provided with inner steel lining, inner steel lining
Being provided with multiple fixed bolt hole, after the hot steel slag in step (1) fills vexed slag bath, the highest face of hot steel slag must not exceed
The fixed bolt hole of inner steel lining topmost, the fixed bolt hole of the described topmost distance away from the highest of inner steel lining is 0.3
～0.5m.
Compared with prior art, the present invention uses the mode fetched water bottom vexed slag bath to cool down hot steel slag,
The water not flowed away when fetching water, after water becomes the steam of 100 DEG C, major part steam also to pass from hot melt slag, continues
Temperature of continuing rising, decomposition, this process can take away more heat in slag, and after the water surface rises to more than the top of the slag, whole pond slag is boiled
Decocting in water, beneficially the efflorescence of slag, and the vexed slag process used time of fetching water is shorter, less with water, has the feature of water-saving efficient.This
Bright vexed slag bath injects after hot steel slag, it is only necessary to hot steel slag is done the most smooth, it is not necessary to arduously turn over and dial, simultaneously under fetch water
During, the water surface slowly rises, and will not wash away slag and make in water containing a large amount of ash, and last backwater amount is also little,
Water return pipeline is simultaneously used to supply water and backwater, and each backwater is deposited on interior a small amount of ash, rinses when can be fetched water by next time again
Totally, the problem being substantially not present water return pipeline blocking, it is not necessary to cleaning water return pipeline, has the advantages that operation cost is relatively low.This
The steam produced of fetching water under invention can the most up emit, and the fuel gas produced in slag is diluted and squeezed out
Go, owing to not watering from above, above with the presence of the red slag of hot melt before having fetched water so that dilution fuel gas the most thoroughly is firm
One emerges, and will be burnt by red slag point above, accumulates nowhere, thoroughly solve the danger of flammable gas explosion, have work
The feature of industry safety.The vexed slag bath of the present invention has the process of boiling water slag, and that boils that slag can make that slag breaks up is more preferable, has boiled simultaneously
Slag close to 100 DEG C, after now slag is dug out, easily moisture evaporation becomes dry, and will not affect follow-up magnetic because of slag overly moist
Choosing, has the preferable feature of the separating effect of slag ferrum in slag.Fetch water under the present invention mode, not only avoid blast, and
And expellant gas temperature, it is significantly larger than on using expellant gas temperature of fetching water to waste heat in slag cooling procedure
Recovery is possibly realized.
Additionally, due to the last backwater amount of the present invention is less, so using the power of suction pump less, the power of suction pump
It is only less than the 1/5 of traditional vexed slag bath big sump suction pump power.Therefore, the present invention has construction, and less input, water saving height
Effect, operation cost is relatively low, job safety and the preferable feature of slag separating effect.
Accompanying drawing explanation
Fig. 1 is the structure top view of the vexed slag system in 4,000,000 tons of steel/years in prior art；
Fig. 2 is the structure right view of vexed slag bath in prior art；
Fig. 3 is the structure top view of the vexed slag bath of the present invention；
Fig. 4 is the structure right view of the vexed slag bath of the present invention；
Fig. 5 is the flow chart of the present invention vexed slag technique.
The vexed slag bath of being labeled as in accompanying drawing: 1-, the little sump of 2-, 3-collecting gutter, 4-water return pipeline, 5-water discharging valve, 6-
Feed pipe, 7-drain pipe, 8-suction pump, 9-lid, 10-vent, 11-chimney connector, 12-ventilation duct, 13-air-introduced machine,
14-inner steel lining, 15-ferrum double-edged fine-toothed comb, 16-cross bar, 17-weight, 18-pull bar, 19-valve catch, 1 '-vexed slag bath, 2 '-catchment
Ditch, 3 '-drainage pipeline, 4 '-big sump.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings, but is not intended as depending on restriction of the present invention
According to.
Illustrate as a example by selecting the vexed slag bath of pretreatment of slag of the independent backwater that applicant builds up in Tangshan below,
The a length of 6m of vexed slag bath, width is 6m, and the degree of depth is 5.5m；The degree of depth of vexed slag bath underdrain ditch is 6m, little sump deep
Degree is 10m.
A kind of method that hot steel slag quickly cools down, is constituted as it is shown in figure 5, comprise the following steps；
1, rebasing:
(a) with suction pump by thorough for the hydrops in vexed slag bath Hui Jing；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
2, dress slag:
Before folding falls the first tank hot slag, confirm situation at the bottom of on-the-spot vexed slag bath, as at the bottom of vexed slag bath, have hydrops or wet slag, it is necessary to
Use converter slag or the scattered slag place mat again of hot melt slag.
Being poured into by hot steel slag in vexed slag bath, the dress quantity of slag is 110～170m3, the preferably dress quantity of slag is 120～130m3；Often to
Vexed slag bath introversion is finished down a hot steel slag, will be stirred the hot steel slag in vexed slag bath；After dress slag completes, fetch water
Vexed slag bath upper cover, the lid of vexed slag bath are provided with chimney connector before, be used for connecting chimney, facilitate and arrange outside steam；Vexed
The lid of slag bath is provided with vent, and connecting through ventilation duct at vent has air-introduced machine, is used for accelerating discharge of steam；Vexed slag bath
Inwall is provided with inner steel lining, and inner steel lining is provided with fixed bolt hole, and after hot steel slag fills vexed slag bath, hot steel slag is
High face must not exceed the fixed bolt hole on inner steel lining, and the fixed bolt hole of the topmost distance away from the highest of inner steel lining is
0.3～0.5m；To check whether vexed slag bath is filled during dress slag, if vexed slag bath is underfilled with, proceed to fill slag operation.
3, fetch water:
The upper cover of vexed slag bath is buckled well；The chimney connector of upper cover is tightly connected with chimney.Close water discharging valve, open
Water supply valve, feed pipe fetches water bottom vexed slag bath, and not backwater during fetching water, until making whole vexed slag bath.Make whole
Vexed slag bath required time is 1.2～1.8 hours, preferably 1.5～1.8 hours, and water consumption is 80～90 tons, preferably 80～85
Ton.
4, slag is boiled:
After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out decocting in water, if
Emission behaviour and the pool inner water amount of steam are undesirable, again reopen water supply valve, the water yield and slag temperature in regulating reservoir
Degree, to meeting the requirements.The time of fetching water of the little water yield is 6～7 hours, preferably 6.5～7 hours, and water consumption is 40～50 tons, excellent
Elect 45～50 tons as.
5, cut off the water vexed slag:
When no longer have in vexed slag bath arrange outside steam time, now pond internal water accumulation can still proceed with holding fluidized state, stops beating
Water, enters vexed scoriform state of cutting off the water；Normal vexed slag phenomenon is that steam is all arranged, at vexed slag bath upper cover vent from chimney
Place, flows in having wind direction pond, at the vexed slag initial stage of fetching water, can start air-introduced machine and accelerate the discharge of steam.
Vexed scoriform state keeps to hot steel slag temperature dropping to less than 90 DEG C stoppings, stopping when preferably 80～85 DEG C；Total use
The water yield is below 0.4 ton/ton slag；The total time terminated from the vexed slag that starts to fetch water is 9～12 hours, preferably 10.5～11.5
Hour.
It is wherein: when just starting to ensure the normal work of vexed slag bath from the runoff investigation process stopping fetching water that starts to fetch water to
Under the state made, first the water yield is given to maximum, then according to the hydrops situation in vexed slag bath, progressively turns the water yield down, keep vexed slag
All the time full-water level in pond, when no longer have in vexed slag bath arrange outside steam time, stop fetching water.
6, slag tap:
(a) draining；Close water supply valve, open water discharging valve, start suction pump, the hydrops in vexed slag bath is sent into water-retention
Pond, backwater amount is below 50 tons, and general displacement is 35～45 tons；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is produced stand-by, complete a cycle of operation.
The device that a kind of hot steel slag quickly cools down, is constituted as shown in Figure 3 and Figure 4, including vexed slag bath 1, the side of vexed slag bath 1
Portion is provided with little sump 2, and the bottom in vexed slag bath 1 is provided with collecting gutter 3, and collecting gutter 3 is by water return pipeline 4 with little sump 2 even
Logical；The top of described collecting gutter 3 is less than the bottom of vexed slag bath 1, and the bottom of little sump 2 is less than the bottom of collecting gutter 3.Described time
Little sump 2 one end of waterpipe 4 is provided with water discharging valve 5 and feed pipe 6.The top of described vexed slag bath 1 is provided with lid 9, lid 9
It is provided with chimney connector 11.Being additionally provided with vent 10 on described lid 9, connecting through ventilation duct 12 at vent 10 has air-introduced machine
13.The bottom of described little sump 2 connects through drain pipe 7 suction pump.The inwall of described vexed slag bath 1 is provided with inner steel lining
14.Described collecting gutter 3 is provided with ferrum double-edged fine-toothed comb 15.Described collecting gutter 3 is arranged on the centre bottom vexed slag bath 1.Described drain valve
Door 5 includes that cross bar 16, cross bar 16 are arranged on feed pipe 6, and one end of cross bar 16 is provided with weight 17, and the other end of cross bar 17 is hinged
Having pull bar 18, the end of pull bar 18 to be hinged with valve catch 19, valve catch 19 is positioned at the discharge outlet of water return pipeline 4.Described
Water return pipeline 4 is obliquely installed between collecting gutter 3 and little sump 2, and one end of water return pipeline 4 is arranged on the bottom of collecting gutter 3,
One end that water return pipeline 4 is connected with collecting gutter 3 is higher than the one end being connected with little sump 2.
Wherein, the thickness of inner steel lining is 220mm.The initial temperature of hot melt slag is 1000～1600 DEG C.
Embodiment 1.A kind of method that hot steel slag quickly cools down, is constituted as it is shown in figure 5, comprise the following steps；
(1) rebasing；Comprise the following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
(2) dress slag；Being poured into by hot steel slag in vexed slag bath, the dress quantity of slag is 110m3；Often it is finished down once heat to vexed slag bath introversion
State slag, will stir the hot steel slag in vexed slag bath；Dress slag will be to vexed slag bath upper cover after completing, on the lid of vexed slag bath
It is provided with chimney connector, is used for connecting chimney, facilitate and arrange outside steam；The lid of vexed slag bath is provided with vent, warp at vent
Ventilation duct connects air-introduced machine, is used for accelerating discharge of steam；The inwall of vexed slag bath is provided with inner steel lining, and inner steel lining is provided with
Fixed bolt hole, after hot steel slag fills vexed slag bath, the highest face of hot steel slag must not exceed the fixing bolt on inner steel lining
Hole；To check whether vexed slag bath is filled during described dress slag, if vexed slag bath is underfilled with, proceed to fill slag operation.
(3) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath, needed for the time of fetching water be 1.2 hours, use
The water yield is about 80 tons.
(4) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out
Decocting in water, the time of fetching water of the little water yield is 6 hours, and water consumption is about 40 tons.
(5) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.Vexed scoriform state
Keep stopping when dropping to 85 DEG C to hot steel slag temperature；Total water consumption is below 0.4 ton/ton slag；From starting to fetch water, vexed slag is tied
The total time of bundle is 9 hours.
(6) slag tap；Comprise the following steps；
(a) draining；Starting suction pump, the hydrops in vexed slag bath is sent into cistern, displacement is at about 35 tons；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is proceeded in conveying equipment.
Embodiment 2.A kind of method that hot steel slag quickly cools down, is constituted as it is shown in figure 5, comprise the following steps；
(1) rebasing；Comprise the following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
(2) dress slag；Being poured into by hot steel slag in vexed slag bath, the dress quantity of slag is 120m3；Often it is finished down once heat to vexed slag bath introversion
State slag, will stir the hot steel slag in vexed slag bath；Dress slag will be to vexed slag bath upper cover after completing, on the lid of vexed slag bath
It is provided with chimney connector, is used for connecting chimney, facilitate and arrange outside steam；The lid of vexed slag bath is provided with vent, warp at vent
Ventilation duct connects air-introduced machine, is used for accelerating discharge of steam；The inwall of vexed slag bath is provided with inner steel lining, and inner steel lining is provided with
Fixed bolt hole, after hot steel slag fills vexed slag bath, the highest face of hot steel slag must not exceed the fixing bolt on inner steel lining
Hole；To check whether vexed slag bath is filled during described dress slag, if vexed slag bath is underfilled with, proceed to fill slag operation.
(3) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath, needed for the time of fetching water be 1.5 hours, use
The water yield is about 85 tons.
(4) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out
Decocting in water, the time of fetching water of the little water yield is 6.5 hours, and water consumption is about 43 tons.
(5) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.Vexed scoriform state
Keep stopping when dropping to 85 DEG C to hot steel slag temperature；Total water consumption is below 0.4 ton/ton slag；From starting to fetch water, vexed slag is tied
The total time of bundle is 9.5 hours.
(6) slag tap；Comprise the following steps；
(a) draining；Starting suction pump, the hydrops in vexed slag bath is sent into cistern, displacement is at about 35 tons；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is proceeded in conveying equipment.
Embodiment 3.A kind of method that hot steel slag quickly cools down, is constituted as it is shown in figure 5, comprise the following steps；
(1) rebasing；Comprise the following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
(2) dress slag；Being poured into by hot steel slag in vexed slag bath, the dress quantity of slag is 130m3；Often it is finished down once heat to vexed slag bath introversion
State slag, will stir the hot steel slag in vexed slag bath；Dress slag will be to vexed slag bath upper cover after completing, on the lid of vexed slag bath
It is provided with chimney connector, is used for connecting chimney, facilitate and arrange outside steam；The lid of vexed slag bath is provided with vent, warp at vent
Ventilation duct connects air-introduced machine, is used for accelerating discharge of steam；The inwall of vexed slag bath is provided with inner steel lining, and inner steel lining is provided with
Fixed bolt hole, after hot steel slag fills vexed slag bath, the highest face of hot steel slag must not exceed the fixing bolt on inner steel lining
Hole；To check whether vexed slag bath is filled during described dress slag, if vexed slag bath is underfilled with, proceed to fill slag operation.
(3) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath, needed for the time of fetching water be 1.6 hours, use
The water yield is 86 tons.
(4) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out
Decocting in water, the time of fetching water of the little water yield is 6.6 hours, and water consumption is about 45 tons.
(5) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.Vexed scoriform state
Keep stopping when dropping to 90 DEG C to hot steel slag temperature；Total water consumption is below 0.4 ton/ton slag；From starting to fetch water, vexed slag is tied
The total time of bundle is 10.5 hours.
(6) slag tap；Comprise the following steps；
(a) draining；Starting suction pump, the hydrops in vexed slag bath is sent into cistern, displacement is at about 35 tons；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is proceeded in conveying equipment.
Embodiment 4.A kind of method that hot steel slag quickly cools down, is constituted as it is shown in figure 5, comprise the following steps；
(1) rebasing；Comprise the following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
(2) dress slag；Being poured into by hot steel slag in vexed slag bath, the dress quantity of slag is 170m3；Often it is finished down once heat to vexed slag bath introversion
State slag, will stir the hot steel slag in vexed slag bath；Dress slag will be to vexed slag bath upper cover after completing, on the lid of vexed slag bath
It is provided with chimney connector, is used for connecting chimney, facilitate and arrange outside steam；The lid of vexed slag bath is provided with vent, warp at vent
Ventilation duct connects air-introduced machine, is used for accelerating discharge of steam；The inwall of vexed slag bath is provided with inner steel lining, and inner steel lining is provided with
Fixed bolt hole, after hot steel slag fills vexed slag bath, the highest face of hot steel slag must not exceed the fixing bolt on inner steel lining
Hole；To check whether vexed slag bath is filled during described dress slag, if vexed slag bath is underfilled with, proceed to fill slag operation.
(3) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath, needed for the time of fetching water be 1.8 hours, use
The water yield is about 90 tons.
(4) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out
Decocting in water, the time of fetching water of the little water yield is 7 hours, and water consumption is about 50 tons.
(5) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.Vexed scoriform state
Keep stopping when dropping to 85 DEG C to hot steel slag temperature；Total water consumption is below 0.4 ton/ton slag；From starting to fetch water, vexed slag is tied
The total time of bundle is 12 hours.
(6) slag tap；Comprise the following steps；
(a) draining；Starting suction pump, the hydrops in vexed slag bath is sent into cistern, displacement is at about 35 tons；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is proceeded in conveying equipment.
The present invention uses the mode fetched water bottom vexed slag bath to cool down hot steel slag, does not flow away when fetching water
Water, after water becomes the steam of 100 DEG C, major part steam also to pass from hot melt slag, continues to heat up, decompose, this
Process can take away more heat in slag, and after the water surface rises to more than the top of the slag, whole pond slag by boiling water boiling, beneficially slag
Efflorescence, the vexed slag process used time of fetching water is shorter, less with water, has the feature of water-saving efficient.The vexed slag bath of the present invention injects
After hot steel slag, it is only necessary to hot steel slag is done the most smooth, it is not necessary to arduously turn over and dial, simultaneously under fetch water during, the water surface is slow
Slow rising, will not wash away slag and make in water containing a large amount of ash, last backwater amount is also little, water return pipeline simultaneously by with
In supplying water and backwater, each backwater is deposited on interior a small amount of ash, rinses well, be substantially not present back when can be fetched water by next time again
The problem of waterpipe blocking, it is not necessary to cleaning water return pipeline, has the advantages that operation cost is relatively low.Fetch water under the present invention produce water
Steam can the most up emit, and the fuel gas produced in slag is diluted and extruded away, owing to not watering from above,
Above with the presence of the red slag of hot melt before having fetched water so that dilution inadequate fuel gas the most thoroughly, will be by above upon emerging
Red slag point burns, and accumulates nowhere, thoroughly solves the danger of flammable gas explosion, has the feature of job safety.The present invention
Vexed slag bath have the process of boiling water slag, that boils that slag can make that slag breaks up is more preferable, the slag simultaneously boiled close to 100 DEG C, this
Time slag dug out after easily moisture evaporation become dry, follow-up magnetic separation will not be affected because of slag overly moist, have slag in slag
The preferable feature of separating effect of ferrum.Fetch water under the present invention mode, not only avoid blast, and expellant gas temperature,
It is significantly larger than on using expellant gas temperature of fetching water so that in slag cooling procedure, the recovery to waste heat is possibly realized.
Additionally, due to the last backwater amount of the present invention is less, so using the power of suction pump less, the power of suction pump
It is only less than the 1/5 of traditional vexed slag bath big sump suction pump power.Therefore, the present invention has construction, and less input, water saving height
Effect, operation cost is relatively low, job safety and the preferable feature of slag separating effect.
Firmly can explode water cover in the place that hot slag is sprinkled there being hydrops, and inexplosive reason of fetching water below hot slag
It is: blast is within the extremely short time to discharge big energy, produces high temperature, and release a large amount of gas, in medium around
Produce the chemical reaction of high pressure, there is extremely strong destructiveness；Hot slag is sprinkled in the place having hydrops, and Shuitu is so covered, hot melt
Slag falls and water intimate contact, and the while of oneself enough heat energy almost, (very short time) passes to following water, and water becomes simultaneously
Steam expansion (state change), then an explosion occurred；When fetching water under and, during water surface rising approaches hot slag, water meeting
By successively (rather than simultaneously) roasting boiling vaporization, water cannot be with hot slag intimate contact, and the steam of generation can be easy to by heat
Slag is discharged.Described hot slag i.e. hot steel slag.
Claims (9)
1. the method that a hot steel slag quickly cools down, it is characterised in that: comprise the following steps；
(1) dress slag；Hot steel slag is poured in vexed slag bath；
(2) fetch water；Fetch water bottom vexed slag bath, until making whole vexed slag bath；
(3) slag is boiled；After making water in vexed slag bath, turn the amount of fetching water down, keep in vexed slag bath full-water level all the time, slag is carried out water
Boil；
(4) cut off the water vexed slag；When no longer have in vexed slag bath arrange outside steam time, stop fetching water, keep vexed scoriform state.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: also wanted before step (1)
Vexed slag bath is carried out rebasing；Comprise the following steps；
A hydrops in vexed slag bath is thoroughly pumped by () with suction pump；
B () uses the converter slag or hot melt slag being dried, by scarce whole place mats of not leaving a blank at the bottom of the pond of whole vexed slag bath.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: want after described step (4)
Slag tap, comprise the following steps；
(a) draining；Start suction pump, the hydrops in vexed slag bath is sent into cistern；
B () is uncapped；Open the lid of vexed slag bath；
C () is slagged tap；With excavating equipment, the slag in vexed slag bath is produced stand-by.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: in described step (1), often to
Vexed slag bath introversion is finished down a hot steel slag, will be stirred the hot steel slag in vexed slag bath.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: after described dress slag, fetch water
Vexed slag bath upper cover, the lid of vexed slag bath are provided with chimney connector before, be used for connecting chimney, facilitate and arrange outside steam.
The method that hot steel slag the most according to claim 5 quickly cools down, it is characterised in that: on the lid of described vexed slag bath
Being provided with vent, connecting through ventilation duct at vent has air-introduced machine, is used for accelerating discharge of steam.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: to check vexed during described dress slag
Whether slag bath is filled, if vexed slag bath is underfilled with, proceeds to fill slag operation.
The method that hot steel slag the most according to claim 1 quickly cools down, it is characterised in that: vexed slag in described step (4)
State keeps stopping when dropping to less than 90 DEG C to hot steel slag temperature.
The method that hot steel slag the most according to any one of claim 1 to 8 quickly cools down, it is characterised in that: described always
Water consumption is below 0.4 ton/ton slag.
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| CN112680554A (en) * | 2020-12-09 | 2021-04-20 | 钢城集团凉山瑞海实业有限公司 | Method for improving hot stuffiness efficiency of steel slag and hot stuffiness device |
| CN112941255A (en) * | 2021-04-02 | 2021-06-11 | 中冶节能环保有限责任公司 | Water bath cooling treatment device and method for casting residues |
| CN113106176A (en) * | 2021-03-15 | 2021-07-13 | 邹国泉 | Steel slag air blowing cooling thermal crushing and high-temperature high-pressure water soaking treatment method |
| CN113736931A (en) * | 2021-08-06 | 2021-12-03 | 中钢(石家庄)工程技术有限公司 | Reverse water immersion method normal pressure hot disintegrating steel slag and waste heat recovery system and method |
| CN114130802A (en) * | 2021-11-16 | 2022-03-04 | 中钢(石家庄)工程技术有限公司 | Steel slag treatment system and steel slag treatment process |
| CN114214472A (en) * | 2021-11-26 | 2022-03-22 | 凉山瑞京环保资源开发有限公司 | Steel slag covering type hot-disintegrating treatment method |
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| CN112680554A (en) * | 2020-12-09 | 2021-04-20 | 钢城集团凉山瑞海实业有限公司 | Method for improving hot stuffiness efficiency of steel slag and hot stuffiness device |
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| CN114214472A (en) * | 2021-11-26 | 2022-03-22 | 凉山瑞京环保资源开发有限公司 | Steel slag covering type hot-disintegrating treatment method |
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