CN106702088A - Method for improving utilization rate of desulfurizer in KR desulfurization process - Google Patents
Method for improving utilization rate of desulfurizer in KR desulfurization process Download PDFInfo
- Publication number
- CN106702088A CN106702088A CN201611044532.0A CN201611044532A CN106702088A CN 106702088 A CN106702088 A CN 106702088A CN 201611044532 A CN201611044532 A CN 201611044532A CN 106702088 A CN106702088 A CN 106702088A
- Authority
- CN
- China
- Prior art keywords
- slag
- desulfurization
- ladle
- raising
- sulfur removal
- 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.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 146
- 230000023556 desulfurization Effects 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 82
- 230000008569 process Effects 0.000 title claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 182
- 230000003009 desulfurizing effect Effects 0.000 claims description 37
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 34
- 229910052717 sulfur Inorganic materials 0.000 claims description 30
- 239000011593 sulfur Substances 0.000 claims description 30
- 238000005516 engineering process Methods 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000002594 sorbent Substances 0.000 claims description 22
- 239000003818 cinder Substances 0.000 claims description 9
- 239000005864 Sulphur Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 77
- 229910052742 iron Inorganic materials 0.000 abstract description 38
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a method for improving the utilization rate of a desulfurizer in a KR desulfurization process, wherein the desulfurizer is added into a ladle entering a KR station and is used for desulfurization treatment; the method comprises the step of conveying the desulfurized slag obtained after desulfurization treatment to the next ladle to be treated in the KR station for desulfurization treatment. The method realizes the reutilization of the high-temperature desulphurization slag, can greatly reduce the consumption of the desulfurizer in the KR procedure, further reduces the slag quantity and the steel material consumption of the KR procedure, and reduces the total cost of the molten iron pretreatment. On the other hand, the total amount of the KR procedure slag is reduced, the treatment cost of the desulphurization slag is reduced, and the pollution to the environment is reduced.
Description
Technical field
It is more particularly to a kind of to improve sorbent utilization in KR sulfur removal technologies the invention belongs to technical field of hot metal pretreatment
Method.
Background technology
As modern industry production and scientific and technical are developed rapidly, the requirement to steel product quality is increasingly improved.For example, being
Steel billet is avoided to produce underbead crack and obtain good surface quality, it is desirable to which the sulfur content of ordinary steel is less than 0.020%.It is required that
The steel of such low-sulfur, using traditional blast furnace ironmaking --- converter steelmaking process is to be difficult production, only before steel-making
This purpose could be realized plus molten iron pre-desulfurization operation.Molten iron pre-desulfurization has turned into the indispensable of optimization metallurgical production process
One of operation, and lime consumption amount and quantity of slag of steel-making etc. are reduced, so as to reduce production cost.
Desulfurization is two hot metal pretreatment technology processes that are separate and being closely connected with slagging-off, and the former determines treatment
Terminal sulfur content of hot metal, and the latter is the important means that the high-sulfur waste residue after desulfurization process is removed from molten iron, be determine into
The principal element of stove sulphur total amount.The a large amount of waste residues for producing swim in molten iron surface, excessive waste residue influence ladleful, and give up
Sulphur in slag has the possibility returned in molten iron, is that this will remove the scum silica frost on molten iron surface.Wherein, what KR methods desulfurizing iron was produced is de-
Traditional method of disposal of sulphur slag includes:(a) by KR desulfurization slags tumble to special slag bath is sub or special place inside, cooling one
The section time, then entrucking roping carries out the treatment of next step to the region specified;B () carries out the water spray behaviour of smaller water to slag ladle
Make, the slag in tank is cooled to less than 150 DEG C, then tumbled by water spraying time 8~16 hours.
KR method iron melt desulfurizing agents are to include CaF by main body of lime2、CaO、Al2O3、SiO2, MgO systems, molten iron treatment
In temperature range, generating region melts to form many first melts of Al-Si-F-O in solid phase desulfurizing agent.But in molten iron pre-desulfurization treatment
When, the polynary slag of melting by CaO bondings tightly, reunite together, when especially molten iron temperature is high, melting Phase Proportion increases,
Desulfurization slag is easy to reunite together, and causing the utilization rate of desulfurizing agent reduces.It can be seen from desulfurization slag compositional data, current desulfurization
Still there is most of free CaO not participate in reaction in slag, cause wastage of material, increase production cost.
The content of the invention
For above mentioned problem of the prior art, a kind of KR sulfur removal technologies are improved it is a primary object of the present invention to provide
The method of sorbent utilization, methods described recycles the desulfurization slag that desulfurization process are obtained, and puts into circulation in next iron bag
Use, greatly improve the utilization rate of desulfurizing agent.
In order to achieve the above object, the present invention is adopted the following technical scheme that:One kind improves desulfurizing agent profit in KR sulfur removal technologies
With the method for rate, the desulfurizing agent is added into the ladle at KR stations, for desulfurization process;Methods described is by after desulfurization process
The desulfurization slag for obtaining is delivered in next ladle for wrapping KR stations to be entered treatment, carries out desulfurization process.
As further preferably, the conveying includes:
1) desulfurization slag after desulfurization process is transferred in desulfurization slag storing apparatus;
2) desulfurization slag in the desulfurization slag storing apparatus is poured into slag bucket;
3) desulfurization slag in slag bucket is poured into next ladle for wrapping treatment to be entered the station.
As it is further preferably, through the step 3) desulfurization slag that obtains after desulfurization process is again through step 1) -3) place
Reason, is recycled for multiple times.
As further preferred, the step 1) in, the transfer device of the desulfurization slag is Cinder Machine.
As further preferred, the step 2) in, the desulfurization slag storing apparatus are transported at slag bucket.
As further preferably, the conveyer of the desulfurization slag storing apparatus is an armful tank car.
As further preferably, the desulfurization slag storing apparatus are slag ladle, and described armful of tank car side is provided with connection slag
The tilting mechanism of tank, is poured into slag bucket for the desulfurization slag in slag ladle.
As it is further preferably, the step 3) in, using lowering or hoisting gear as slag bucket conveyer.
As further preferably, the slag bucket is connected with suspension hook, and the suspension hook is connected with lowering or hoisting gear, for slag bucket
Lifted and tumbled.
As further preferably, the slag bucket is provided with hanger, is connected with the suspension hook.
As further preferably, the temperature of the desulfurization slag is 500~1000 DEG C.
The beneficial effects of the invention are as follows:
(1) the high temperature desulfurizing slag that the inventive method will be obtained after desulfurization process is delivered to next molten iron for wrapping treatment to be entered the station
Bao Zhong, realizes the recycling of high temperature desulfurizing slag, the consumption of desulfurizing agent in KR operations can be greatly reduced, and then reduce KR operations
The quantity of slag and steel technology, and reduce molten iron pretreatment totle drilling cost.On the other hand, the total quantity of slag of KR operations is reduced, desulfurization
The reduction of Slag treatment cost, reduces the pollution to environment.
(2) present invention substitutes desulfurizing agent and realizes desulfurization operations by recycling the desulfurization slag under the condition of high temperature;Throw simultaneously
The characteristics of desulfurization slag entered in ladle has high temperature, CaO high and high Fe content, ladle is directly poured into the condition of high temperature and is taken off
Sulphur can overcome the water-cooled of desulfurization slag to be denatured that air cooling caused by property and slag being not readily separated property of mixing is slow, recovery value after water-cooled
Block is big after reduction, cooling, easy processing and pollution environment etc. recycle the big problem of difficulty.
(3) present invention combines the slag bucket with lifting and tilt functions using tank car is embraced, and device is simple and practical, so that simply
Desulfurization slag is directly added into pending ladle under efficiently solving the problems, such as the condition of high temperature.
(4) during desulfurization slag is shifted, no slag is remained or dropped the inventive method, convenient environmental protection, and during transfer
Between it is shorter, the reduction of desulfurization slag temperature is little.
Brief description of the drawings
Fig. 1 is the process chart that the embodiment of the present invention 1 improves sorbent utilization method in KR sulfur removal technologies.
Fig. 2 is the structural representation of armful tank car in the embodiment of the present invention 4.
Mark is described as follows in accompanying drawing:Articulated body, 3- Rear frames, 4- rear supports, 5- work are big in the middle of 1- drawing heads, 2-
Arm, 6- dump cylinders, 7- support cylinders, 8- latch hooks oil cylinder, 9- lift oil tanks, 10- slag ladles, 11- latch hook members, 12- rising arms,
13- insulation covers, 14- steering cylinders.
Specific embodiment
Method of the embodiment of the present invention by providing sorbent utilization in a kind of raising KR sulfur removal technologies, realizes high temperature
The recycling of desulfurization slag, reduces the consumption of desulfurizing agent, improves its utilization rate.
The main thought of the embodiment of the present invention is:
The method that the embodiment of the present invention improves sorbent utilization in KR sulfur removal technologies, the desulfurizing agent enters KR in ladle
Added when standing, for desulfurization process;High temperature desulfurizing slag after desulfurization process is delivered to next bag and waits treatment of entering the station by methods described
Ladle in, carry out desulfurization process.
KR desulfurization is that the agitator for being made refractory material is inserted at the next depthkeeping of ladle liquid level, and is allowed to rotate.When
When agitator rotates, molten iron level forms V-arrangement vortex (center is low, and surrounding is high), makes the desulfurizing agent particulate of addition in blade tip
Disperse in region, and spued along radial direction, then suspend, around axle center rotate and on float on molten iron, stirred by means of this machinery
The effect of mixing makes desulfurizing agent be involved in molten iron and contact, mixing, agitation, so as to carry out desulphurization reaction.Desulphurization reaction terminate with
Afterwards, the dry thick shape slag for being generated is floated on molten iron face, and a small amount of blast furnace slag existed in ladle is mixed.By these slags
Son obtains the purpose of desulfurization after skimming, the desulfurization slag for clawing turns into the main part of KR desulfurization slags.
The Main Components of KR desulfurization slags are lime, graphite bits, metallic iron etc., and wherein metal Ferrum content is 35%~45%,
It is the valuable source of steel mill.The high temperature circulation of once desulfurization high temperature sludge is using with stronger desulphurizing ability, alternative partial desulfurization
Agent, and then the consumption of desulfurizing agent is reduced, and high temperature desulfurizing slag can also bring part physical heat into, reduce KR processing procedure temperature drops,
Great amount of cost can be saved.The inventive method can repeatedly use high temperature sludge, and high temperature desulfurizing slag that will be after desulfurization process is defeated
Deliver in next ladle for wrapping treatment to be entered the station, it is defeated again that next bag ladle enters the high temperature desulfurizing slag obtained after the treatment of KR stations
Deliver to again in next iron bag for wrapping treatment to be entered the station, recycle.
In KR sulfur removal technologies, low temperature can reduce molten iron balance sulfur content, and high temperature is conducive to mass transfer, in selection technique
During parameter, moderate molten iron pretreatment temperature may be selected.Therefore, desulfurization slag of the invention adds next iron for wrapping treatment to be entered the station
Bao Shi, can specifically chosen consumption come reach suitable molten iron temperature and substitute desulfurizing agent optimum efficiency.
Can be obtained through in steel mill's practical application, the desulfurization slag of 4-7 tons of addition can reduce the use of 0.04-0.07% sulfur contents,
Generally, the sulphur mass content having in 3 tons of desulfurizing agent is 0.1%.Therefore, the recycling of embodiment of the present invention desulfurization slag can
Reduce the use of desulfurizing agent, the alternative 300kg desulfurizing agents of 1t desulfurization slags, the desulfurization slag of return can reduce sorbent consumption 30~
40%.
In order to above and other purpose, feature and the advantage of the present invention can be become apparent, number cited below particularly is implemented
Example is come the method that illustrates sorbent utilization in raising KR sulfur removal technologies of the present invention.
Embodiment 1
The method that the embodiment of the present invention 1 improves sorbent utilization in KR sulfur removal technologies, the desulfurizing agent enters in ladle
Added when KR stands, for desulfurization process;Be delivered to for high temperature desulfurizing slag after desulfurization process and next wrap KR to be entered station by methods described
In the iron bag for the treatment of;As shown in figure 1, the conveying comprises the following steps:
1) desulfurization slag after desulfurization process is transferred in desulfurization slag storing apparatus;
2) desulfurization slag in the desulfurization slag storing apparatus is poured into slag bucket;
3) desulfurization slag in slag bucket is poured into next iron bag for wrapping treatment to be entered the station, for desulfurization process.
The desulfurization slag is the hot desulfurization slag of high temperature, and the temperature of the desulfurization slag is 1000 DEG C, in the course of conveying
Temperature drop is little.
Embodiment 2
The method that the embodiment of the present invention 2 improves sorbent utilization in KR sulfur removal technologies, the desulfurizing agent enters in ladle
Added when KR stands, for desulfurization process;Be delivered to for desulfurization slag after desulfurization process and next wrap KR stations to be entered treatment by methods described
Iron bag in;The conveying specifically includes following steps:
1) desulfurization slag after desulfurization process is directly grilled into desulfurization slag storing apparatus by Cinder Machine;The desulfurization slag is held
Device of receiving is conventional slag ladle.
2) next stove before processing is being carried out, first the desulfurization slag storing apparatus is being transported at slag bucket, then by the desulfurization
Desulfurization slag in slag storing apparatus is poured into slag bucket;The conveyer of the desulfurization slag storing apparatus is an armful tank car.
3) the high temperature desulfurizing slag in slag bucket is poured into next iron bag for wrapping treatment to be entered the station.
4) iron bag enters the treatment of KR stations.
Wherein, 1) -4 are repeated the above steps in KR sulfur removal technologies), the slag persistent loop of desulfurization process is utilized.
The desulfurization slag is the hot desulfurization slag of high temperature, and the temperature of the desulfurization slag is 500 DEG C;
The slag ladle uses steel-casting, and material uses 16MnA;
The Cinder Machine is the plant equipment for molten steel pocket deslagging.Cinder Machine is arranged on the support frame basis of platform
On, face the ladle tumbled.Cinder Machine is fascinated three and acts synthesis by skim carriage walking and revolution, arm of skimming
Realization is skimmed.Cinder Machine by dolly of skimming, rotary rack, base, arm of skimming, carriage walking device of skimming, skim revolution of arm and
Tilting equipment, drag chain and proximity switch etc. are constituted.
Embodiment 3
The method that the embodiment of the present invention 3 improves sorbent utilization in KR sulfur removal technologies, the desulfurizing agent enters in ladle
Added when KR stands, for desulfurization process;Be delivered to for desulfurization slag after desulfurization process and next wrap KR stations to be entered treatment by methods described
Ladle in;The conveying specifically includes following steps:
1) desulfurization slag after desulfurization process is directly grilled into desulfurization slag storing apparatus by Cinder Machine;The desulfurization slag is held
Device of receiving is conventional slag ladle.
2) next stove before processing is being carried out, first the desulfurization slag storing apparatus is being transported at slag bucket, then by the desulfurization
Desulfurization slag in slag storing apparatus is poured into slag bucket;The conveyer of the desulfurization slag storing apparatus is an armful tank car.
3) the high temperature desulfurizing slag in slag bucket is poured into next iron bag for wrapping treatment to be entered the station using lowering or hoisting gear and suspension hook.
4) iron bag enters the treatment of KR stations.
The desulfurization slag is the hot desulfurization slag of high temperature, and the temperature of the desulfurization slag is 800 DEG C;Step 1) in desulfurization slag exist
Step 3) add when, can using all disposably pour into.
The present embodiment 3 using 60 tons of radial type embrace tank cars realize live slag ladles embrace tanks, transport tank, turn over tank one reject transport
Function.Embrace tank car and move backward outside desulfurization station and embrace a tank, according to the big arm lengths of working, can adjust the placement of the in-orbit road chassis of slag ladle
Put.Embrace tank car side and be provided with slag pot tipping hanger;Further, since needs are tumbled, slag ladle both sides need to have T-shaped lock pin baffle plate.
The slag bucket both sides are provided with hanger, and slag bucket is highly adjusted by lowering or hoisting gear by connecting shackle.
Embodiment 4
The method that the embodiment of the present invention 4 improves sorbent utilization in KR sulfur removal technologies, the desulfurizing agent enters in ladle
Added when KR stands, for desulfurization process;Be delivered to for desulfurization slag after desulfurization process and next wrap KR stations to be entered treatment by methods described
Ladle in;The conveying specifically includes following steps:
1) desulfurization slag after desulfurization process is directly grilled into desulfurization slag storing apparatus by Cinder Machine;The desulfurization slag is held
Device of receiving is conventional slag ladle.
2) next stove before processing is being carried out, first the desulfurization slag storing apparatus is being transported at slag bucket, then by the desulfurization
Desulfurization slag in slag storing apparatus is poured into slag bucket;The conveyer of the desulfurization slag storing apparatus is an armful tank car.
3) the high temperature desulfurizing slag in slag bucket is poured into by next iron bag for wrapping treatment to be entered the station using lowering or hoisting gear and gantry hook
In.
4) iron bag enters the treatment of KR stations.
The desulfurization slag is the hot desulfurization slag of high temperature, and the temperature of the desulfurization slag is 580 DEG C;
As shown in Fig. 24 armfuls of tank cars of the present embodiment realize live slag ladles embrace tanks, transport tank, turn over tank one reject Transport work
Energy.The drawing head 1 of 4 armfuls of tank cars of the embodiment of the present invention is connected by a middle articulated body 2 with the Rear frame 3, it is described after
Vehicle frame 3 and work large arm 5 are opening U-frame frame backward, and the work large arm 5 is by a working cross beam and two work side arms
Constitute, the U-frame frame of the Rear frame 3 is made up of a frame cross and two vehicle frame side arms, two works of the work large arm 5
Make side arm to be hinged with two vehicle frame side arms one-to-one corresponding of the Rear frame 3;The Rear frame front end is hinged with a support cylinder
7, the Rear frame rear end is hinged a rear supports 4, and axletree, and the rear supports 4 are equiped with the rear supports 4
Also it is hinged with the rear end of the support cylinder 7;Dump cylinder 6, dump cylinder 6 are connected between the Rear frame 3 and work large arm 5
One end be hinged with Rear frame 3, the other end of dump cylinder 6 and work large arm 5 are hinged;The rear end of the work side arm sets
There is the prong for supporting slag ladle 10.The hinged connection type U-shaped slag pot carrier of the present embodiment 4 stretches out promotion by support cylinder 7 when in use
Rear supports 4, and then Rear frame 3 is upwarped, drive work large arm 5 slag ladle 10 is departed from ground, realize tinning and unload tank action;
The combination of dump cylinder 6 and work large arm 5 can be realized turning over tank action;And Rear frame 3 and work large arm 5 are U-frame frame
Structure, can improve tinning, unload the efficiency of tank.
The slag bucket both sides are provided with hanger, and slag bucket is highly adjusted by lowering or hoisting gear by connecting gantry hook
Section.
Step 1) in desulfurization slag in step 3) add when, can using part pour into batches, be stirred after addition, protect
Preference temperature during card desulfurization, reaches best desulfurized effect.
The desulfurizing agent is conventional CaO base desulfurizers, it is not necessary to add other auxiliary materials for example:AL, Mg or AL slag
Deng.The alternative 300kg desulfurizing agents of embodiment of the present invention 1t desulfurization slags.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
(1) be delivered to the high temperature sludge after desulfurization process in next iron bag for wrapping treatment to be entered the station by the inventive method, realizes
The recycling of desulfurization high temperature sludge, can be greatly reduced the consumption of KR operation desulfurizing agents, and then reduce the quantity of slag and steel of KR operations
Iron charge is consumed, and then reduces the totle drilling cost of molten iron pretreatment.On the other hand, the total quantity of slag of KR operations is reduced, desulfurization slag processing cost
Reduce, reduce the pollution to environment.
(2) present invention substitutes desulfurizing agent and realizes desulfurization operations by recycling the desulfurization slag under the condition of high temperature;Throw simultaneously
The characteristics of desulfurization slag entered in ladle has high temperature, CaO high and high Fe content, ladle is directly poured into the condition of high temperature and is taken off
Sulphur can overcome the water-cooled of desulfurization slag to be denatured that air cooling caused by property and slag being not readily separated property of mixing is slow, recovery value after water-cooled
Very much not easy processing and pollution environment etc. recycle the big problem of difficulty to block after reduction, cooling.
(3) present invention combines the slag bucket with lifting and tilt functions using tank car is embraced, and device is simple and practical, so that simply
Desulfurization slag is directly added into pending iron bag under efficiently solving the problems, such as the condition of high temperature.
(4) during desulfurization slag is shifted, no slag is remained or dropped the inventive method, convenient environmental protection, and during transfer
Between it is shorter, the reduction of desulfurization slag temperature is little.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.Obviously, those skilled in the art can be to the present invention
Carry out various changes and modification without departing from the spirit and scope of the present invention.So, if these modifications of the invention and modification
Belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to exist comprising these changes and modification
It is interior.
Claims (10)
1. in a kind of raising KR sulfur removal technologies sorbent utilization method, the desulfurizing agent be added into KR station ladle
In, for desulfurization process;It is characterized in that:Be delivered to for the desulfurization slag obtained after desulfurization process and next wrap KR to be entered by methods described
Stand in the ladle for the treatment of, carry out desulfurization process.
2. in raising KR sulfur removal technologies according to claim 1 sorbent utilization method, it is characterised in that:It is described defeated
Send including:
1) desulfurization slag after desulfurization process is transferred in desulfurization slag storing apparatus;
2) desulfurization slag in the desulfurization slag storing apparatus is poured into slag bucket;
3) desulfurization slag in slag bucket is poured into next ladle for wrapping treatment to be entered the station.
3. in raising KR sulfur removal technologies according to claim 2 sorbent utilization method, it is characterised in that:Through described
Step 3) desulfurization slag that obtains after desulfurization process is again through step 1) -3) treatment, it is recycled for multiple times.
4. in raising KR sulfur removal technologies according to claim 2 sorbent utilization method, it is characterised in that:The step
It is rapid 1) in, the device of the desulfurization slag transfer is Cinder Machine.
5. in raising KR sulfur removal technologies according to claim 2 sorbent utilization method, it is characterised in that:The step
It is rapid 2) in, the desulfurization slag storing apparatus are transported at slag bucket, the conveyer of the desulfurization slag storing apparatus is to embrace a tank car.
6. in raising KR sulfur removal technologies according to claim 2 sorbent utilization method, it is characterised in that:It is described de-
Sulphur slag storing apparatus are slag ladle, and described armful of tank car is provided with the tilting mechanism of connection slag ladle.
7. in raising KR sulfur removal technologies according to claim 2 sorbent utilization method, it is characterised in that:The step
It is rapid 3) in, using lowering or hoisting gear as slag bucket conveyer.
8. in raising KR sulfur removal technologies according to claim 7 sorbent utilization method, it is characterised in that:The slag
Bucket is connected with suspension hook, and the suspension hook is connected with lowering or hoisting gear, for being lifted to slag bucket and being tumbled.
9. in raising KR sulfur removal technologies according to claim 8 sorbent utilization method, it is characterised in that:The slag
Bucket is provided with hanger, is connected with the suspension hook.
10. in raising KR sulfur removal technologies according to claim 1 and 2 sorbent utilization method, it is characterised in that:Institute
The temperature for stating desulfurization slag is 500~1000 DEG C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611044532.0A CN106702088A (en) | 2016-11-22 | 2016-11-22 | Method for improving utilization rate of desulfurizer in KR desulfurization process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611044532.0A CN106702088A (en) | 2016-11-22 | 2016-11-22 | Method for improving utilization rate of desulfurizer in KR desulfurization process |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106702088A true CN106702088A (en) | 2017-05-24 |
Family
ID=58933752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611044532.0A Pending CN106702088A (en) | 2016-11-22 | 2016-11-22 | Method for improving utilization rate of desulfurizer in KR desulfurization process |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106702088A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107190112A (en) * | 2017-05-31 | 2017-09-22 | 马鞍山市双益机械制造有限公司 | The slag sluicing system of desulfurizing slag of hot metal, the processed offline technique of cooling device |
CN112216351A (en) * | 2020-09-23 | 2021-01-12 | 成都佳华物链云科技有限公司 | Desulfurization optimization method and device, electronic equipment and storage medium |
CN115627312A (en) * | 2022-09-19 | 2023-01-20 | 首钢京唐钢铁联合有限责任公司 | Method for desulfurizing molten iron |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004076088A (en) * | 2002-08-16 | 2004-03-11 | Jfe Steel Kk | Method for recycling desulfurization slag |
JP2004244706A (en) * | 2003-02-17 | 2004-09-02 | Nippon Steel Corp | Slag recycling method |
CN102268514A (en) * | 2011-07-04 | 2011-12-07 | 首钢京唐钢铁联合有限责任公司 | KR desulfurization slag iron recycling method |
-
2016
- 2016-11-22 CN CN201611044532.0A patent/CN106702088A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004076088A (en) * | 2002-08-16 | 2004-03-11 | Jfe Steel Kk | Method for recycling desulfurization slag |
JP2004244706A (en) * | 2003-02-17 | 2004-09-02 | Nippon Steel Corp | Slag recycling method |
CN102268514A (en) * | 2011-07-04 | 2011-12-07 | 首钢京唐钢铁联合有限责任公司 | KR desulfurization slag iron recycling method |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107190112A (en) * | 2017-05-31 | 2017-09-22 | 马鞍山市双益机械制造有限公司 | The slag sluicing system of desulfurizing slag of hot metal, the processed offline technique of cooling device |
CN112216351A (en) * | 2020-09-23 | 2021-01-12 | 成都佳华物链云科技有限公司 | Desulfurization optimization method and device, electronic equipment and storage medium |
CN112216351B (en) * | 2020-09-23 | 2024-02-13 | 成都佳华物链云科技有限公司 | Desulfurization optimization method and device, electronic equipment and storage medium |
CN115627312A (en) * | 2022-09-19 | 2023-01-20 | 首钢京唐钢铁联合有限责任公司 | Method for desulfurizing molten iron |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100424189C (en) | Method for reclaiming and cyclic utilizing residue molten steel slag in steel making | |
JP4819187B2 (en) | Refining agent and refining method | |
KR101276921B1 (en) | Method for removing copper in steel scraps | |
RU2734853C2 (en) | Cast iron production method, device for its production and cast iron produced by said method | |
CN102094108A (en) | Method for realizing deep desulfurization during converter steelmaking through singly-blowing magnesium grain molten iron pretreatment | |
JP5876168B2 (en) | Low cost clean steel manufacturing method | |
JP4736466B2 (en) | Method for producing high chromium molten steel | |
CN106702088A (en) | Method for improving utilization rate of desulfurizer in KR desulfurization process | |
JP6421634B2 (en) | Manufacturing method of molten steel | |
TWI544081B (en) | Hot metal refining method | |
JPS636608B2 (en) | ||
JP2015017323A (en) | Preliminary treatment method for molten iron | |
CN211689138U (en) | System for utilize induction heating jetting to handle rich manganese slag stove molten iron | |
JPH0853705A (en) | Steelmaking method | |
CN109280739B (en) | Method for improving molten steel yield of electric furnace | |
CN104741588B (en) | The manufacture method of ICDP roll working lining | |
JP2000345224A (en) | Method for desulfurizing molten iron | |
CN216947095U (en) | Molten iron pretreatment device outside melting reduction furnace | |
CN114959127B (en) | Molten iron desulfurization slag and converter slag mixing modification co-treatment method | |
JP4772454B2 (en) | Hot metal refining method | |
CA2467310A1 (en) | Combined ironmaking and steelmaking plant | |
JP4598220B2 (en) | Hot metal processing method using decarburized iron | |
CN107034332A (en) | A kind of molten iron pre-desulfurization method | |
SU981376A1 (en) | Method for smelting manganese-containing steels | |
JP2002285219A (en) | Method for dephosphorizing molten iron |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
RJ01 | Rejection of invention patent application after publication |