CN109913642A - A kind of rotary hearth furnace raw material processing system and its technique - Google Patents
A kind of rotary hearth furnace raw material processing system and its technique Download PDFInfo
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- CN109913642A CN109913642A CN201910359083.6A CN201910359083A CN109913642A CN 109913642 A CN109913642 A CN 109913642A CN 201910359083 A CN201910359083 A CN 201910359083A CN 109913642 A CN109913642 A CN 109913642A
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000002994 raw material Substances 0.000 title claims abstract description 49
- 239000010802 sludge Substances 0.000 claims abstract description 194
- 239000000463 material Substances 0.000 claims abstract description 90
- 238000002156 mixing Methods 0.000 claims abstract description 54
- 230000008569 process Effects 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000002956 ash Substances 0.000 claims description 88
- 239000004615 ingredient Substances 0.000 claims description 57
- 239000000203 mixture Substances 0.000 claims description 37
- 239000011701 zinc Substances 0.000 claims description 22
- 239000011230 binding agent Substances 0.000 claims description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052725 zinc Inorganic materials 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 abstract description 19
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 238000005272 metallurgy Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000005453 pelletization Methods 0.000 description 12
- 239000000428 dust Substances 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 9
- 230000006872 improvement Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000013456 study Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
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Abstract
The invention discloses a kind of rotary hearth furnace raw material processing system and its techniques, belong to metallurgy industry rotary hearth furnace technical field.Rotary hearth furnace raw material processing system of the invention, including process ash material receiving device and sludge receiving device arranged side by side, and the mixing device and balling head that are arranged successively down by process；The ash material receiving device and sludge receiving device are sent into mixing device mixing after receiving corresponding material respectively, and balling head is transferred to after mixing and carries out balling-up processing.By the way that ash material receiving device and sludge receiving device are fed intake to mixing device side by side, the sludge drying system of the prior art can be cancelled, and then cancel the process flow added water after sludge drying, sludge is directly matched to be added in mixing device and is mixed with ash material, raw material system production stability is improved, the secondary environmental pollution of sludge drying course is avoided.
Description
Technical field
The invention belongs to metallurgy industry rotary hearth furnace technical field more particularly to a kind of rotary hearth furnace raw material processing systems and its work
Skill.
Background technique
The zinc overwhelming majority of zinc-containing raw materials used enters in iron dust containing and sludge in steel manufacture process, and with plating
Zinc steel scrap dosage is continuously increased, and metallurgical solid waste zinc content is higher and higher.It is a kind of treasured since dust and sludge iron content composition are higher
Expensive regenerated resources.According to national resources utilization and Environment Protection Policy, there are also circular economy concept, these iron dust containings and dirt
Mud should all be recycled after treatment.But recycle and need to solve zinc enrichment problem, because zinc will be led after being constantly enriched with
Cause the not genial service life reduction of conditions of blast furnace.But domestic steel plant recycle there are no a set of from feedstock processing, reduction and exhaust gas, zinc powder
Etc. links all carry out system design and put into on-line industry metaplasia produce holonomic system.Some correlative studys also stop resonable mostly
By or the experimental stage, especially crucial feedstock processing and pelletizing system do not have the reliable technique of complete set and equipment can with gram
Take that this kind of raw material type of sludge, dust is many and diverse, composition fluctuation is big, the unfavorable factors such as ballability difference, and can be steady with reasonable cost
Surely the high zinc containing iron pelletizing that physical and chemical index meets high temperature reducing conditions is produced.
Currently, in the production of iron and steel enterprise's rotary hearth furnace, traditional material treatment process are as follows: the iron content from other workshops contains
Zinc sludge (blast furnace gas mud, converter OG sludge etc.) is dehydrated through sludge drying system, is then sent to sludge batch bin, various other
Dedusting ash and binder are by closed tank car by pneumatic conveying into respective batch bin；Various raw materials more than in proportioning room and auxiliary
Material carries out ingredient by the proportion of setting, and the mixture prepared enters disc balling machine after profit mill (or strong mixed) and humidification and made
Ball.Traditional raw material treatment process has the following problems: 1) sludge drying system failure is more, influences raw material system production stability；
2) sludge drying after material moisture it is difficult to control in suitable range, and before pelletizing in order to meet requirement of the balling-up to moisture need by
Mixture adds water to aqueous 7%-12%, and the process flow added water after dehydration increases process energy consumption, while money of also wasting water
Source；3) secondary environmental pollution is generated in sludge drying course, influences site environment.
Through retrieving, Chinese invention patent, application number: 200810233950.3, publication date: 2009.5.20 discloses one kind
Rotary hearth furnace raw material processing and pelletizing system process, technical process are that the zinc-containing dust of required processing, sludge can be respectively by close
Sealed cans vehicle and pipeline come, and adhesive needed for the various iron content dedusting ash and pelletizing in tank car is sent directly into the ingredient of sealing
Storehouse；It is sent into batch bin after the converter mud and gas mud conditioning that pipeline comes are dry, using ingredient, grinding, humidification
The high zinc containing iron pelletizing for meeting RHF furnace high target parameter request is produced with processes such as pelletizings, which can overcome
This kind of raw material composition fluctuation of zinc-containing dust, sludge is big, many unfavorable factors such as ballability difference, but the invention also has dehydration
The process flow added water afterwards increases process energy consumption, at the same also waste water resource the problem of.
Summary of the invention
1. technical problems to be solved by the inivention
Raw material system, which is influenced, for sludge drying in rotary hearth furnace raw material existing in the prior art processing produces stable, dehydration
The problem of process flow added water afterwards increases process energy consumption, the present invention provides a kind of rotary hearth furnace raw material processing system and its
Technique.The present invention cancels the process flow added water after sludge drying, and sludge is directly matched to be added in mixing device and is mixed with ash material
It is even, raw material system production stability is improved, process energy consumption is reduced, reduces occupied area, avoids secondary environmental pollution, saves water money
Source.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of rotary hearth furnace raw material processing system, including process ash material receiving device and sludge receiving device arranged side by side, and
The mixing device and balling head being arranged successively down by process；The ash material receiving device and sludge receiving device receive respectively
It is sent into mixing device mixing after corresponding material, balling head is transferred to after mixing and carries out balling-up processing.By by ash material receiving device
It feeds intake side by side to mixing device with sludge receiving device, the sludge drying system of the prior art can be cancelled, and then cancel sludge and dry
The process flow added water after dry, sludge is directly matched to be added in mixing device mixes with ash material, and it is steady to improve raw material system production
It is qualitative, avoid the secondary environmental pollution of sludge drying course.
Preferably, ash material proportioner, dirt are equipped between ash material receiving device, sludge receiving device and mixing device
Mud proportioner；The ash material receiving device includes several vertical batch bins；The ash material proportioner includes vertical batch bin
The ingredient sealing-tape machine that lower section is equipped with；Each vertical batch bin stores different ash materials, and various ash material classification are temporary, and
Each ash material proportion of allotment appropriate is carried out according to sludge water content；The sludge receiving device includes sludge bin；The sludge ingredient
Device includes the sludge delivery pump and sludge pipe being equipped with below sludge bin；The mixing device is intensive mixer；Institute
Stating balling head is nodulizer；Sludge pipe is connected to sludge delivery pump and intensive mixer.
Preferably, gate valve one and star-shaped dust-discharging valve, face star-shaped dust-discharging valve are provided at vertical batch bin outlet at bottom
Lower section is also equipped with burden balance, and blanking facilitates blanking according to the ratio, the weighing of ash material to ingredient sealing-tape machine after burden balance ingredient
It is rotated with conveying；The problems such as sludge bin bottom is provided with broken arch balladeur train, avoids unsmooth sludge bin blanking, putty, sludge bin
Batcher is arranged in the lower section of outlet at bottom, and batcher discharges to screw feeder scale, and screw feeder scale is conveyed by pipeline and sludge
Pump connection facilitates blanking, counterweight and the conveying rotation of sludge.
Preferably, vertical batch bin bottom outer wall is equipped with hopper wall vibrator, and the clear material of warehouse and blanking, top is facilitated to connect
It is connected to roof scrubber, avoids dust pollution environment, and external ingredient silometer, it is convenient to observe position in storehouse in time and match according to the ratio
Storehouse；Sludge silometer is arranged in the sludge bin top, and is connected to the discharge end of sludge sealing-tape machine；It is set on the sludge sealing-tape machine
Discharger and moisture detector are set, belted electronic balance is arranged in bottom, to achieve the purpose that by moisture than Distribution Warehouse；The screw feeder
Gate valve two is arranged in the pipeline that scale is connected to sludge delivery pump, to interrupt material conveying in time, achievees the purpose that accurate dosing.
Preferably, material sequence of batching products is successively provided with mixture sealing-tape machine between intensive mixer and nodulizer, mixes
Close material surge bunker and towed belt；The nodulizer discharges to green-ball sealing-tape machine.
Preferably, sludge delivery pump is plunger pump；The roof scrubber silo roof bag filter；The discharger is plough
Formula discharger.
Preferably, batcher is frequency conversion screw(-type) feeder；The burden balance are closed burden balance；The nodulizer is disk
Pelletizer or ball press.
Preferably, ash material includes dedusting ash containing zinc and binder；The batch bin material position of the vertical batch bin and sludge bin
In 30%-70%；Sludge water content control is in 20%-30% in the sludge bin；The sludge includes blast furnace gas mud and converter
OG mud；Sludge weight proportion is 20%-50% in the intensive mixer.
Preferably, intensive mixer mixing time is about 60~90s, and mixing degree 97%~98%, moisture is 7%~8%.
A kind of production technology of rotary hearth furnace raw material processing system, step are as follows:
Step 1: ash material receives: various ash materials being transported by different closed tank cars and pass through pneumatic conveying into corresponding
Vertical batch bin；
Step 2: ash material ingredient: dedusting ash and binder use gravimetric method ingredient, according to each material moisture, carbon content etc.
Parameter setting proportion, carries out on automatic blending to ingredient sealing-tape machine according to the proportion of setting；
Step 3: sludge receives: sludge is conveyed by sludge sealing-tape machine or sludge pump into sludge bin；
Step 4: sludge ingredient: sludge uses gravimetric method ingredient, proportion according to sludge and the water content of other dedusting ash,
The parameters such as carbon content, Zn content are calculated；
Step 5: mixture mixes: dedusting ash and binder are by ingredient sealing-tape machine addition intensive mixer, and sludge is by plunger
Pump throws mixing machine into through sludge pipe, and dedusting ash, binder and sludge are uniformly mixed in mixing machine；
Step 6: balling-up: the mixture after intensive mixer mixing is delivered into mixture through mixture sealing-tape machine and buffers
Storehouse, mixture surge bunker reserves at 1 more than hour, mixture by the towed belt feeding under surge bunker to formed by balling machine,
Manufactured green-ball is transported to next procedure by green-ball sealing-tape machine.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) a kind of rotary hearth furnace raw material processing system of the invention, the requirement according to pelletizing to mixture moisture and proportion are adopted
With new process, sludge drying system is eliminated, sludge direct and other dedusting ash of the moisture control between 20%-30% and auxiliary
Material mixes in intensive mixer, subsequent processing without humidification can pelletizing reduce occupied area to reduce process energy consumption,
Secondary environmental pollution is avoided, water resource has been saved；
(2) broken arch balladeur train+screw(-type) feeder+spiral shell is arranged under sludge bin for a kind of rotary hearth furnace raw material processing system of the invention
The dispensing equipment for revolving feed weigher, it is possible to prevente effectively from the problems such as sludge bin blanking is unsmooth, putty, can also reach uniform ingredient, essence
The purpose of quasi- ingredient；
(3) a kind of rotary hearth furnace raw material processing system of the invention, directly throws sludge into intensive mixer using plunger pump
It is interior, do not have to be added on ingredient sealing-tape machine, improves the working environment of proportioning room and ingredient sealing-tape machine；
(4) a kind of rotary hearth furnace raw material processing system of the invention, sludge ingredient all processes can be used in closed system into
Row does not need setting environmental dust removal, the problems such as without spreading material leakage；
(5) a kind of rotary hearth furnace raw material processing system of the invention compares existing traditional handicraft first for the dirt containing 20%-30%
It is mixed after mud drying with other dedusting ash, 7%-12% is added water after mixing, whole process process energy consumption is high, waste water resource
The problem of, ingredient of the present invention is combined using siccative with wet feed, is added again as needed not without humidifying in advance, or in pelletizing
Moisture more than 1%, or even moisture is not added, process energy consumption can be effectively reduced, save water resource.
Detailed description of the invention
Fig. 1 is the process schematic layout pattern of production system of the invention；
Fig. 2 is the process detailed placement schematic diagram of production system of the invention；.
Label declaration in schematic diagram: 1, closed tank car；2, ingredient silometer；3, roof scrubber；4, vertical ingredient
Storehouse；5, hopper wall vibrator；6, gate valve one；7, star-shaped dust-discharging valve；8, burden balance；9, ingredient sealing-tape machine；10, sludge sealing-tape machine；
11, discharger；12, moisture detector；13, belted electronic balance；14, sludge silometer；15, sludge bin；16, broken arch balladeur train；
17, batcher；18, screw feeder scale；19, gate valve two；20, plunger pump；21, sludge pipe；22, intensive mixer；23, it mixes
Close material sealing-tape machine；24, mixture surge bunker；25, towed belt；26, nodulizer；27, green-ball sealing-tape machine；100, ash material receives dress
It sets；200, sludge receiving device；150, ash material proportioner；250, sludge proportioner；300, mixing device；400, balling-up fills
It sets.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
Embodiment 1
A kind of rotary hearth furnace raw material processing system of the present embodiment, as shown in Figure 1, including process ash material receiving device arranged side by side
100 and sludge receiving device 200, and the mixing device 300 and balling head 400 that are arranged successively down by process；The ash
Material receiving device 100 and sludge receiving device 200 are sent into 300 mixing of mixing device after receiving corresponding material respectively, turn after mixing
Enter balling head 400 and carries out balling-up processing.
The rotary hearth furnace raw material processing system of the present embodiment, by by ash material receiving device 100 and sludge receiving device 200 simultaneously
It arranges and feeds intake to mixing device 300, by sludge water content control in sludge bin 15 in 20%-30%, and the sludge in mixing device 300
Weight proportion is 20%-50%, can cancel the sludge drying system of the prior art, and then added water after cancellation sludge drying
Process flow, sludge is directly matched be added in mixing device with ash material mix, improve raw material system production stability, avoid dirt
The secondary environmental pollution of mud drying course.
Embodiment 2
A kind of rotary hearth furnace raw material processing system of the present embodiment, specific structure with embodiment 1, the improvement is that substantially:
As shown in Fig. 2, being equipped with ash material ingredient dress between ash material receiving device 100, sludge receiving device 200 and mixing device 300
Set 150, sludge proportioner 250；The ash material receiving device 100 includes several vertical batch bins 4；The ash material proportioner
150 include the ingredient sealing-tape machine 9 being equipped with below vertical batch bin 4；Each vertical batch bin 4 stores different ashes
Material, it is 4 in the present embodiment that various ash materials classification, which are kept in, and each vertical batch bin 4 stores different ash materials, various ash materials
Classification is temporary, such as dedusting ash containing zinc and binder, and dedusting ash containing zinc includes blast furnace dedusting ash, the secondary ash of converter, electric stove dust
Ash etc., paper pulp or clay can be selected in binder, and carries out each ash material of allotment appropriate according to sludge water content and match；The sludge connects
It is included sludge bin 15 by device 200；The sludge proportioner 250 includes the sludge delivery pump being equipped with below sludge bin 15
And sludge pipe；The mixing device is intensive mixer；The balling head is nodulizer；Sludge pipe is connected to sludge conveying
Pump and intensive mixer 22.
A kind of rotary hearth furnace raw material processing system of the present embodiment, and each ash material of allotment appropriate is carried out according to sludge water content and is matched
Than in conjunction with the sludge water content of 20%-30% and the weight ratio of 20%-50%, by various dedusting ash containing zinc and binder into strong
It is deployed before power mixing machine 22, and then achievees the purpose that object of the discharging moisture of intensive mixer 22 after 7%~8%, mixing
Material can balling-up without humidification in nodulizer 26.
Embodiment 3
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure are theed improvement is that with embodiment 2: vertical
Gate valve 1 and star-shaped dust-discharging valve 7 are provided at 4 outlet at bottom of batch bin, 7 lower section of face star-shaped dust-discharging valve is also equipped with
Burden balance 8, blanking facilitates the blanking according to the ratio, weighing and conveying rotation of ash material to ingredient sealing-tape machine 9 after 8 ingredient of burden balance；Institute
The problems such as 15 bottom of sludge bin is provided with broken arch balladeur train 16, avoids unsmooth 15 blanking of sludge bin, putty is stated, 15 bottom of sludge bin goes out
Batcher 17 is arranged in the lower section of mouth, and the discharging of batcher 17 to screw feeder scale 18, screw feeder scale 18 passes through pipeline and sludge is defeated
It send pump to be connected to, facilitates blanking, counterweight and the conveying rotation of sludge.Sludge proportioner 250 includes batcher 17 and screw feeder
Scale 18.
Embodiment 4
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure exist with embodiment 3, different and improvements
In: vertical 4 bottom outer wall of batch bin is equipped with hopper wall vibrator 5, and the clear material of warehouse and blanking, top is facilitated to be connected with silo roof and remove
Dirt device 3 avoids dust pollution environment, and external ingredient silometer 2, convenient observation position in storehouse in time and according to the ratio Distribution Warehouse；It is described
Sludge silometer 14 is arranged in 15 top of sludge bin, and is connected to the discharge end of sludge sealing-tape machine 10；On the sludge sealing-tape machine 10
Discharger 11 and moisture detector 12 are set, and belted electronic balance 13 is arranged in bottom, to achieve the purpose that by moisture than Distribution Warehouse；It is described
Gate valve 2 19 is arranged in the pipeline that screw feeder scale 18 is connected to sludge delivery pump, to interrupt material conveying in time, reaches accurate
The purpose of ingredient.
Embodiment 5
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure are theed improvement is that with embodiment 4: strength
Between mixing machine 22 and nodulizer 26 successively by material sequence of batching products be provided with mixture sealing-tape machine 23, mixture surge bunker 24 and
Towed belt 25；Material is quickly conveyed to green-ball sealing-tape machine 27, saves the process the time, avoid work by the discharging of nodulizer 26
Skill loss, and then moisture requirement needed for being precisely controlled material balling-up.
Embodiment 6
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure are theed improvement is that with embodiment 5: sludge
Delivery pump is plunger pump, is directly thrown sludge in intensive mixer into using plunger pump, does not have to be added on ingredient sealing-tape machine, improve
The working environment of proportioning room and ingredient sealing-tape machine；The 3 silo roof bag filter of roof scrubber；The discharger 11 is plough
Formula discharger.Batcher 17 is frequency conversion screw(-type) feeder；The burden balance 8 are closed burden balance；The nodulizer 26 is disk
Pelletizer or ball press.
Embodiment 7
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure are theed improvement is that with embodiment 6: vertical
The batch bin material position of batch bin 4 and sludge bin 15 is in 30%-70%；Sludge water content control is in 20%- in the sludge bin 15
30%；The sludge includes blast furnace gas mud and converter OG sludge；Sludge weight proportion is 20%- in the intensive mixer 22
50%.
The production technology of the rotary hearth furnace raw material processing system of the present embodiment, step are as follows:
Step 1: ash material receives: various ash materials being passed through the different transports of closed tank car 1 and pass through pneumatic conveying into corresponding
Vertical batch bin 4, each batch bin are equipped with level-sensing device 2, continuously Real time displaying material position value, normal production can control batch bin material position
Between 30%-70%；
Step 2: ash material ingredient: dedusting ash and binder use gravimetric method ingredient, according to the water content of each dedusting ash, carbon
The parameter settings such as content, Zn content proportion, can be automatically controlled by computer system, and storehouse divides into that one 6+ frequency conversion of gate valve is star-like to unload ash
The combination of valve 7+ closed burden balance 8 carries out on accurate automatic blending to ingredient sealing-tape machine 9 according to the proportion of setting；
Step 3: sludge receives: sludge is conveyed by sludge sealing-tape machine 10 or sludge pump into sludge bin 15, and sludge bin 15 uses
At 8 more than hour, " the batcher 17+ screw feeder scale of frequency conversion spiral is arranged in cylindric totally-enclosed steel construction, storage amount under storehouse
Two 19+ plunger pump of 18+ gate valve, 20 " dispensing equipment, sludge types include at least blast furnace gas mud and converter OG sludge；Sludge bin 15
Equipped with sludge silometer 14, can continuous Real time displaying material position value, normal production control sludge bin material position 30%-70% it
Between；
Step 4: sludge ingredient: sludge uses gravimetric method ingredient, proportion according to sludge and the water content of other dedusting ash,
The parameters such as carbon content, Zn content are calculated, and can be automatically controlled by computer system, and ordinary circumstance sludge is matched in 20%-
It is advisable between 50%；Sludge ingredient all processes can be used in closed system and carry out, and setting environmental dust removal not needed, to avoid spreading
The problems such as expecting material leakage；
Step 5: mixture mixes: intensive mixer 22 is added by ingredient sealing-tape machine 9 in dedusting ash and binder, sludge by
Plunger pump 20 throws mixing machine into through sludge pipe 21, and dedusting ash, binder and sludge are uniformly mixed in mixing machine, mixes
Time is about 60~90s, and mixing degree 97%~98%, the moisture that discharges is 7%~8%；
Step 6: balling-up: the mixture after intensive mixer 22 mixes is delivered into mixture through mixture sealing-tape machine 23
Surge bunker 24,24 reserves of mixture surge bunker at 1 more than hour, expected by the towed belt 25 under surge bunker by mixture
26 balling-up of ball machine, manufactured green-ball are transported to next procedure by green-ball sealing-tape machine 27, such as screening → drying → into furnace → cooling
And then finished product.
The rotary hearth furnace raw material processing system and its production technology of the present embodiment, 20%- will first be contained by comparing existing traditional handicraft
It is mixed after 30% sludge drying with other dedusting ash, 7%-12% is added water after mixing, whole process process energy consumption is high, wave
The problem of water wasting resource, the present embodiment ingredient are combined using siccative dedusting ash and binder with wet feed sludge, without adding in advance
It is wet, or add in pelletizing the moisture no more than 1% again as needed, process energy consumption can be effectively reduced, save water resource.
Embodiment 8
A kind of rotary hearth furnace raw material processing system of the present embodiment, basic structure and basic step are the same as embodiment 7, improvements
It is: step are as follows:
Step 1: ash material receives: blast furnace dedusting ash, the secondary ash of converter, electric stove dust ash and clay are passed through different 4 kinds
Closed tank car 1 transports and by pneumatic conveying into corresponding 4 vertical batch bins 4, and each batch bin is equipped with level-sensing device 2, can connect
Continuous Real time displaying material position value；
Step 2: ash material ingredient: dedusting ash and binder use gravimetric method ingredient, according to the moisture content of each dedusting ash,
The parameter settings such as carbon content, Zn content match, and 4 kinds of ash materials proportions are 2:1:1:0.2 in the present embodiment, and moisture content controls
4% hereinafter, carbon content 81% or so, Zn content 8% or so (being weight ratio)；Storehouse divides into that one 6+ frequency conversion of gate valve is star-like to unload ash
The combination of valve 7+ closed burden balance 8 carries out on accurate automatic blending to ingredient sealing-tape machine 9 according to the proportion of setting；
Step 3: sludge receives: sludge is conveyed by sludge sealing-tape machine 10 or sludge pump into sludge bin 15, and sludge bin 15 uses
At 8 more than hour, " the batcher 17+ screw feeder scale of frequency conversion spiral is arranged in cylindric totally-enclosed steel construction, storage amount under storehouse
Two 19+ plunger pump of 18+ gate valve, 20 " dispensing equipment, sludge types are blast furnace gas mud；Sludge bin 15 is equipped with sludge silometer
14, continuously Real time displaying material position value, normal production sludge bin material position can be controlled between 30%-70%；
Step 4: sludge ingredient: sludge uses gravimetric method ingredient, proportion according to sludge and the water content of other dedusting ash,
The parameters such as carbon content, Zn content are calculated, and sludge proportion is 44% in the present embodiment；Sludge ingredient all processes can be used close
It closes in system and carries out, do not need setting environmental dust removal, the problems such as to avoid spreading material leakage；
Step 5: mixture mixes: intensive mixer 22 is added by ingredient sealing-tape machine 9 in dedusting ash and binder, sludge by
Plunger pump 20 throws mixing machine into through sludge pipe 21, and dedusting ash, binder and sludge are uniformly mixed in mixing machine, mixes
Time is about 80s, and mixing degree 98%, the moisture that discharges is 7.3%；
Step 6: balling-up: the mixture after intensive mixer 22 mixes is delivered into mixture through mixture sealing-tape machine 23
Surge bunker 24,24 reserves of mixture surge bunker at 1 more than hour, expected by the towed belt 25 under surge bunker by mixture
26 balling-up of ball machine, manufactured green-ball are transported to next procedure by green-ball sealing-tape machine 27, such as screening → drying → into furnace → cooling
And then finished product.
The rotary hearth furnace raw material processing system and its production technology of the present embodiment, without humidifying in advance, without in pelletizing
Moisture is added, satisfactory green-ball can be produced.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of rotary hearth furnace raw material processing system, it is characterised in that: including process ash material receiving device (100) and sludge arranged side by side
Receiving device (200), and the mixing device (300) and balling head (400) that are arranged successively down by process；The ash material connects
Received to be sent into mixing device (300) mixing after corresponding material respectively by device (100) and sludge receiving device (200), after mixing
It is transferred to balling head (400) and carries out balling-up processing.
2. rotary hearth furnace raw material processing system according to claim 1, it is characterised in that: the ash material receiving device (100),
Ash material proportioner (150), sludge proportioner are equipped between sludge receiving device (200) and mixing device (300)
(250)；The ash material receiving device (100) includes several vertical batch bins (4)；The ash material proportioner (150) includes vertical
The ingredient sealing-tape machine (9) being equipped with below formula batch bin (4)；Each vertical batch bin (4) stores different ash materials；Institute
Stating sludge receiving device (200) includes sludge bin (15)；The sludge proportioner (250) includes cooperation below sludge bin (15)
The sludge delivery pump and sludge pipe (21) of setting；The mixing device (300) is intensive mixer (22)；The balling head
(400) it is nodulizer (26)；Sludge pipe (21) is connected to sludge delivery pump and intensive mixer (22).
3. rotary hearth furnace raw material processing system according to claim 2, it is characterised in that: vertical batch bin (4) bottom
Exit is provided with gate valve one (6) and star-shaped dust-discharging valve (7), is also equipped with ingredient below face star-shaped dust-discharging valve (7)
Scale (8), blanking is to ingredient sealing-tape machine (9) after burden balance (8) ingredient；Sludge bin (15) bottom is provided with broken arch balladeur train
(16), batcher (17) are arranged in the lower section of sludge bin (15) outlet at bottom, batcher (17) discharging to screw feeder scale (18), spiral shell
Rotation feed weigher (18) is connected to by pipeline with sludge delivery pump.
4. rotary hearth furnace raw material processing system according to claim 2, it is characterised in that: vertical batch bin (4) bottom
Outer wall is equipped with hopper wall vibrator (5), and top is connected with roof scrubber (3), and external ingredient silometer (2)；The dirt
Sludge silometer (14) are arranged in hopper dredger (15) top, and are connected to the discharge end of sludge sealing-tape machine (10)；The sludge sealing-tape machine
(10) discharger (11) and moisture detector (12) are set on, and belted electronic balance (13) are arranged in bottom；The screw feeder scale
(18) pipeline setting gate valve two (19) being connected to sludge delivery pump.
5. rotary hearth furnace raw material processing system according to claim 3, it is characterised in that: the intensive mixer (22) at
Material sequence of batching products is successively provided with mixture sealing-tape machine (23), mixture surge bunker (24) and towed skin between ball machine (26)
Band (25)；The nodulizer (26) discharges to green-ball sealing-tape machine (27).
6. rotary hearth furnace raw material processing system according to claim 4, it is characterised in that: the sludge delivery pump is plunger
Pump；Roof scrubber (3) the silo roof bag filter；The discharger (11) is belt plow.
7. rotary hearth furnace raw material processing system according to claim 5, it is characterised in that: the batcher (17) is frequency conversion spiral shell
Revolve batcher；The burden balance (8) are closed burden balance；The nodulizer (26) is disc balling machine or ball press.
8. according to any rotary hearth furnace raw material processing system of claim 2 to 7, it is characterised in that: the ash material includes containing
Zinc dedusting ash and binder；The batch bin material position of the vertical batch bin (4) and sludge bin (15) is in 30%-70%；The dirt
The interior sludge water content control of hopper dredger (15) is in 20%-30%；The sludge includes blast furnace gas mud and converter OG sludge；The strength is mixed
The interior sludge weight proportion of conjunction machine (22) is 20%-50%.
9. rotary hearth furnace raw material processing system according to claim 8, it is characterised in that: the intensive mixer (22) mixes
Time is about 60~90s, and mixing degree 97%~98%, moisture is 7%~8%.
10. a kind of production technology of rotary hearth furnace raw material processing system according to claim 9, it is characterised in that: step are as follows:
Step 1: ash material receives: various ash materials being transported by different closed tank cars (1) and are stood by pneumatic conveying into corresponding
Formula batch bin (4)；
Step 2: ash material ingredient: dedusting ash and binder use gravimetric method ingredient, according to parameters such as each material moisture, carbon contents
Setting proportion, carries out on automatic blending to ingredient sealing-tape machine (9) according to the proportion of setting；
Step 3: sludge receives: sludge is conveyed by sludge sealing-tape machine (10) or sludge pump into sludge bin (15)；
Step 4: sludge ingredient: sludge uses gravimetric method ingredient, and proportion contains according to sludge and the water content of other dedusting ash, carbon
The parameters such as amount, Zn content are calculated；
Step 5: mixture mixes: intensive mixer (22) are added by ingredient sealing-tape machine (9) in dedusting ash and binder, sludge by
Plunger pump (20) throws mixing machine into through sludge pipe (21), and dedusting ash, binder and sludge are uniformly mixed in mixing machine；
Step 6: balling-up: the mixture after intensive mixer (22) mixes is delivered into mixture through mixture sealing-tape machine (23)
Surge bunker (24), mixture surge bunker (24) reserves at 1 more than hour, given by the towed belt (25) under surge bunker by mixture
Expect nodulizer (26) balling-up, manufactured green-ball is transported to next procedure by green-ball sealing-tape machine (27).
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