CN107055993A - A kind of equipment and process of copper-contained sludge granulation and prebake - Google Patents
A kind of equipment and process of copper-contained sludge granulation and prebake Download PDFInfo
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- CN107055993A CN107055993A CN201710351189.2A CN201710351189A CN107055993A CN 107055993 A CN107055993 A CN 107055993A CN 201710351189 A CN201710351189 A CN 201710351189A CN 107055993 A CN107055993 A CN 107055993A
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- water
- feed bin
- copper
- prebake
- contained sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses the equipment and process of a kind of granulation of copper-contained sludge and prebake, the equipment includes elevator, steady feed bin, preposition feed bin, pre-add water mixer, rearmounted feed bin, comminutor etc.；The overall weighing device of feed bin is provided with preposition feed bin, bottom is provided with pneumatic operated valve；Pre-add water mixer realizes stirring with breaing up, and inner upper is provided with atomizer, and atomizer is connected with water supply installation realizes accurate water distribution, and level-sensing device and lower level-sensing device are provided with rearmounted feed bin；Material is transmitted by belt conveyor between rearmounted feed bin, comminutor and drying screening plant.The inventive method is to the accurate water distribution of mixed powder, material is sufficiently stirred for three-dimensional agitating mode, aqueous uniform wet feed was formed in 3 minutes, the consistent pellet of particle can be made, porosity is accumulated during sintering to improve, pellet is inside and outside uneven when heated and phenomenon that burst is greatly reduced, and kiln section ventilation non-uniform phenomenon is greatly reduced, because the heat that evaporation moisture content is wasted can reduce by 300 400KJ/kg.
Description
Technical field
The present invention relates to the equipment and process of a kind of granulation of copper-contained sludge and prebake, belong to danger wastes resource
Reutilization technology field.
Background technology
The HW17 classifications that copper-contained sludge belongs in National Hazard waste register, are mainly derived from Treatment of Metal Surface, Re Chu
The sludge produced in the industry wastewater treatment process such as reason processing, electronic components fabrication, plating and basic chemical feedstock manufacture, these
Sludge containing heavy metal have easily accumulation, it is unstable, the features such as be easy to run off, if do not dealt carefully with, serious environment can be caused
Pollution.
The mode that sludge is recycled is generally brickmaking, potting grain etc., with the low advantage of efficient, economy, operating cost, can be changed
Kind storage and transportation conditions, can be achieved the innoxious use of sludge, it is to avoid the pollution to environment.Preparation process generally includes to do
The processes such as dry, stirring, granulation, drying, sintering, wherein sintering needs to consume substantial amounts of fuel, are easily caused high energy consumption.Middle promulgated by the State Council
Bright patent 201110149124.2 discloses disposal and the Application way of a kind of sludge, by sludge by drying, stirring, granulate, burn
The step of knot, broken, dedusting, sub-sieve, be the haydite that can be utilized by people by firing sludge.This method prepare particle compared with
Greatly, then by broken and sub-sieve obtain, the problem of haydite quality for there are complex procedures, firing is not high.Chinese invention patent
201611178461.3 a kind of processing method of copper-contained sludge is disclosed, including：Copper-contained sludge is carried out with dryer low
Temperature drying；Copper-contained sludge after drying is sent to double rod Squeezinggranulators after the discharging opening of low temp dryer is ejected, and is made
Granular copper-contained sludge；Granular copper-contained sludge is sent into band drier to be dried；Graininess cupric after drying is dirty
Mud is sent to ore deposit copper metallurgy industry and smelted.Though this method energy output blister copper, the raw material for smelting becomes waste residue.
In actual production process, often because material stirring is uneven, the spherical shape of comminutor finish mix is inconsistent,
During sintering easily because internal/external heating is uneven and caused by pellet burst, it is difficult to high-quality haydite is made.In addition, copper-contained sludge is in disposal
It is preceding for the ease of stacking, conveying, generally go through processing of drying in the shade, the desiccation of Sludge Surface part, the inside also water containing 50-70%
Part, existing production technology generally uses and first sludge is dehydrated, or does not consider that institute's water content is carried out inside sludge
Enough water distributions, are easily caused complex manufacturing, the problems such as sintering energy consumption is high.The research topic of the present invention is how to provide one
Plant the copper-contained sludge processing equipment and process more optimized.
The content of the invention
Goal of the invention：For problems of the prior art, the present invention provides a kind of copper-contained sludge granulation and prebake
Equipment and process, improve copper-contained sludge and the quality of pellet be made, improve production efficiency and reduction equipment energy consumption.
Technical scheme：For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of granulation of copper-contained sludge and the equipment of prebake, including along material handle the elevator of direction arrangement, steady feed bin,
Drawing-in device, preposition feed bin, pre-add water mixer, rearmounted feed bin, comminutor and drying screening plant；It is the preposition feed bin, pre-
Add water mixer, rearmounted feed bin is from top to bottom set, and the overall weighing device of feed bin is provided with preposition feed bin, bottom is provided with pneumatic
Valve；The pre-add water mixer realizes stirring with breaing up, and inner upper is provided with atomizer, atomizer and water supply installation phase
Even, pre-add water mixer bottom is provided with pneumatic discharge valve；Level-sensing device and lower level-sensing device are provided with the rearmounted feed bin, it is rearmounted
Measuring belt scale is provided with below feed bin；Pass through belt conveyor between the rearmounted feed bin, comminutor and drying screening plant
Transmit material.
Preferably, the steady feed bin, which is provided with the top of weighing sensor, steady feed bin, is provided with overfall, unnecessary material can
Elevator is returned by overfall.
Preferably, in order to realize accurate water distribution in mixer, the water supply installation include screw pump, water tank, water pump and
Electro-hydraulic reversing valve；The water pump is used for cistern water supply, and the screw pump is used to convey the water in water tank through electro-hydraulic reversing valve
Atomizer to pre-add water mixer；The electro-hydraulic reversing valve passes through water lines and atomizer, screw pump and water respectively
Case is connected.
Preferably, side of the pre-add water mixer using positive and negative pair of ribbon, plow-shape stirring blade and the combination of high speed fly cutter
Formula is stirred and broken up to material.Material is sufficiently stirred for using three-dimensional agitating mode, can form aqueous uniform in 3 minutes
Wet feed.
Preferably, it is described drying screening plant be provided with pellet entrance, pellet outlet, hot-wind inlet, exhaust outlet and
Waste outlet；The hot-wind inlet is connected with sintering furnace hot air discharge mouthful, and pellet is dried using residual heat from kiln furnace, the exhaust outlet and
Deduster is connected.
Preferably, the waste outlet of the drying screening plant is connected to comminutor by belt conveyor, it will not conform to
The powder of lattice is back to comminutor and granulated again.
A kind of process of copper-contained sludge granulation and prebake, comprises the following steps：
(1) compound powder of copper-contained sludge, quick lime and carbon dust is subjected to quantitative weighing and feeding；
(2) the symmetrical measured compound powder spraying progress that adds water is prewetted stirring, the constant height for the use 0.8-1.2Mpa that adds water
Pressure supplies water, accurate water distribution；Material is sufficiently stirred for three-dimensional agitating mode, aqueous uniform wet feed, water material were formed in 3 minutes
Weight ratio is in 3.5-7%；
(3) by the wet feed powder measuring fixed amount after stirring, then persistently it is delivered to comminutor and is granulated；
(4) pellet is dried and sieved, qualified finished product feeding sintering machine sintering, underproof powder returns to granulation
Machine is granulated again.
Preferably, when spraying adds water in the step (2), water is delivered into atomization spray with 0.8-1.2Mpa pressure
Head, prewet raw meal powder when, the atomizing pressure of shower nozzle is between 1-1.2Mpa, and water droplets diameter is between 50-150 μm.
Preferably, three-dimensional agitating mode is positive and negative pair of ribbon, plow-shape stirring blade and high speed fly cutter group in the step (2)
The mode of conjunction is stirred to material, and when water material weight ratio is 3.5-7%, after stirring 1 minute, the water capacity of raw material is uneven
Degree≤5%, after stirring 3 minutes, water capacity unevenness≤1% of raw material.
Preferably, in the step (3), the particle diameter of comminutor granulation is between 5-8mm.
Beneficial effect：Compared with prior art, the invention has the advantages that：1st, the present invention can be in pre-add water mixer
Material is fully broken up and stirred, original moisture in sludge can be made full use of, accurate water distribution is realized, reduction raw material
Water capacity unevenness, the pellet that particle can be caused consistent.2nd, the present invention is provided with steady feed bin, preposition feed bin, rearmounted feed bin three-level
Feed bin, and each feed bin is precisely weighed, it is possible to achieve copper-contained sludge continuous processing.3rd, pellet made from the inventive method is equal
Even, accumulation porosity is mentioned during pellet through skin drying sintering, pellet is inside and outside uneven when heated and the phenomenon that bursts greatly
Reduce, kiln section ventilation non-uniform phenomenon is greatly reduced, because the heat that evaporation moisture content is wasted can reduce 300-400KJ/KG.
Brief description of the drawings
Fig. 1 is the equipment configuration schematic diagram of the embodiment of the present invention.
In Fig. 1,1- elevators, the steady feed bins of 2-, 3- weighing sensors, 4- drawing-in devices, the preposition feed bins of 5-, 6- feed bins are overall
Weighing device, 7- pneumatic operated valves, 8- pre-add water mixers, 9- pneumatic discharge valves, 10- screw pumps, 11- water tanks, 12- water pumps, 13- electricity
Level-sensing device under liquid reversal valve, 14- atomizers, the upper level-sensing devices of 15-, 16-, the rearmounted feed bins of 17-, 18- measuring belt scales, 20- makes
Grain machine, 22- drying screening plant, 19,21,23,24- belt conveyors.
Fig. 2 is the process method flow chart of the embodiment of the present invention.
Embodiment
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention, after the present invention has been read, various equivalences of the those skilled in the art to the present invention
The modification of form falls within the application appended claims limited range.
Embodiment 1
As shown in figure 1, the equipment of a kind of granulation of copper-contained sludge and prebake disclosed in the embodiment of the present invention, including along material
The elevator 1 of processing direction arrangement, steady feed bin 2, drawing-in device 4, preposition feed bin 5, pre-add water mixer 8, rearmounted feed bin 17, make
Grain machine 20 and drying screening plant 22.Pass through belt conveyor between rearmounted feed bin 17, comminutor 20 and drying screening plant 22
Pellet after drying is sent to sintering furnace by the 19th, 21 transmission material, belt conveyor 24.Preposition feed bin 5, pre-add water mixer 8,
Rearmounted feed bin 17 is from top to bottom set, and fecula material is transported into steady feed bin 2 by elevator 1, steady feed bin 2 is provided with weighing and sensing
Device 3 and overfall.The overall weighing device 6 of feed bin is provided with preposition feed bin 5, bottom is provided with pneumatic operated valve 7.Pre-add water mixer 8
Using three-dimensional agitating mode, by the way of positive and negative pair of ribbon, plow-shape stirring blade and high speed (1400rpm and more than) fly cutter combination
Material is stirred, wet feed broken up while stirring, the inner upper of pre-add water mixer 8 is provided with atomizer 14,
Atomizer 14 is connected with water supply installation, and the bottom of pre-add water mixer 8 is provided with pneumatic discharge valve 9.It is provided with rearmounted feed bin 17
Upper level-sensing device 15 and lower level-sensing device 16, the rearmounted lower section of feed bin 17 are provided with measuring belt scale 18, will be wet by measuring belt scale 18
Material is transported to belt conveyor 19.
Wherein, water supply installation can realize accurate water distribution, including screw pump 10, water tank 11, water pump 12 and electro-hydraulic reversing valve
13；Water pump 12 is used to supply water to water tank 11, and screw pump 10 is used to the water in water tank 11 being delivered to pre-add through electro-hydraulic reversing valve 13
Atomizer 14 in water mixer 8；Electro-hydraulic reversing valve 13 passes through water lines and atomizer 14, screw pump 10 and water tank respectively
11 are connected.Setting range can be reached in water content by the water content of the wet feed in sensor online pre-add water mixer 8
When control electro-hydraulic reversing valve 13 commutate, screw pump 10 is stopped.
It can be drying roller picker to dry screening plant 22, while realizing the drying and screening of wet feed ball, be provided with pellet and enter
Mouth, pellet outlet, hot-wind inlet, exhaust outlet and waste outlet, hot-wind inlet are connected with sintering furnace hot air discharge mouthful, utilize kiln
Stove residual heat drying pellet, exhaust outlet is connected with deduster.
The present embodiment equipment the course of work be：By the mixed raw material powder of the copper-contained sludge prepared, quick lime and carbon dust by
Elevator 1 feeds steady feed bin 2 of weighing, and the overfall that unnecessary powder passes through top returns elevator；Weigh the feeding of the lower section of steady feed bin 2
Expect device 4 (such as spiral metering reamer), raw meal powder is quantified to set on the preposition feed bin 5 of feeding, preposition feed bin 5 integrally claimed by feed bin
6 (such as pulling force sensors) are put in refitting, and the feed bin is integrally weighed, when raw material total amount reaches the rated capacity of requirement, control feeding
Device 4 stops feeding, then, controls the pneumatic operated valve 7 of the preposition bottom of feed bin 5 to open, and raw material feeding combined type is added water stirring in advance
Machine 8 be stirred, it is necessary to a certain proportion of water water tank 11 is supplied to by water pump 12, then the pressure by screw pump 10 on request is defeated
Atomizer 14 is delivered to, electro-hydraulic reversing valve 13 controls the flow direction of water, when reaching the water of needs, the commutation of electro-hydraulic reversing valve 13 is dynamic
Make, the water that screw pump 10 is exported is passed straight back to water tank 11.
After raw meal powder equipped with certain proportion water stirs, pneumatic discharge valve 9 is opened, wet feed powder feeds rearmounted feed bin
17, it is provided with level-sensing device 15 and lower level-sensing device 16, it is ensured that wet feed amount is stable in feed bin, then passes through the metering of its bottom
Belt conveyer scale 18 is measured, and being continuously fed into comminutor 20 through belt conveyor 19 granulates, then through the feeding drying sieve of belt conveyor 21
Separating device 22 is sieved, and underproof powder is sifted out, while hot-air seasoning material is inputted by the hot-air mouth of side, it is useless after drying
Gas enters sack cleaner by the exhaust outlet on top and collected, and underproof powder returns to comminutor 20 again via belt conveyor 23
Granulation, qualified finished product feeds kiln calcining by belt conveyor 24.
Embodiment 2
As shown in Fig. 2 can be granulated disclosed in the embodiment of the present invention using a kind of copper-contained sludge of the equipment of above-described embodiment 1
With the process of prebake, mainly comprise the following steps：
1) mixed powder of copper-contained sludge, quick lime and carbon dust is subjected to discontinuously circulation quantitative weighing and feeding.Wherein give birth to
The parts by weight of lime are 10-18%, and the parts by weight of carbon dust are 5-7%, and remaining is water content in copper-contained sludge, copper-contained sludge
For 50-70%.
2) the symmetrical measured compound powder spraying progress that adds water is prewetted stirring, the constant high-pressure for the use 0.8-1.2Mpa that adds water
Supply water, accurate water distribution；Material is sufficiently stirred for three-dimensional agitating mode, aqueous uniform wet feed, water material weight were formed in 3 minutes
Ratio is measured in 3.5-7%.In this step, prewet raw meal powder when, the atomizing pressure of shower nozzle is between 1-1.2Mpa, water droplets diameter
Between 50-150 μm.Three-dimensional agitating mode is the mode of positive and negative pair of ribbon, plow-shape stirring blade and the combination of high speed fly cutter to material
It is stirred, when water material weight ratio is 3.5-7%, stirs 1 minute, water capacity unevenness≤5% of raw material, stir 3 points
Clock, water capacity unevenness≤1% of raw material.
3) by the wet feed powder measuring fixed amount after stirring, then persistently it is delivered to comminutor and is granulated.The particle diameter of granulation exists
Between 5-8mm.
4) pellet is dried and sieved, qualified finished product feeding sintering machine sintering, underproof powder (particle diameter compared with
It is small) it is returned to comminutor and granulates again.In this step, the pellet feeding after being granulated through comminutor dries roller picker by particle and powder
Material screen is branched away, and removes the surface moisture content of pellet to material section drying using residual heat from kiln furnace.Pellet after screened and drying enters
Kiln is calcined, and pellet accumulation porosity uniform in size is mentioned, and reduces kiln section flowing resistance, and pellet is inside and outside uneven when heated
And the phenomenon burst is greatly reduced, kiln section ventilation non-uniform phenomenon is also greatly reduced.
The process of the present invention is illustrated by taking 1 ton of copper-contained sludge mixed powder as an example below.
Example 1：
(1) mixed powder of 980kg copper-contained sludges (water content 60 ± 2%), 15kg quick limes and 5kg carbon dusts is quantitatively claimed
Weigh and feed preposition feed bin, preposition feed bin is reached after 1 ton of limit of setting, opens bottom pneumatic operated valve, mixed powder entirely falls in pre-
Add water mixer.
(2) the symmetrical measured compound powder spraying progress that adds water is prewetted stirring, the constant height for the use 0.8-1.2Mpa that adds water
Pressure supplies water, and the atomizing pressure of shower nozzle is between 1-1.2Mpa, and water droplets diameter is between 50-150 μm, to wet while adding water
Material is stirred to be broken up with high speed fly cutter, is stirred 3 minutes, and water material weight ratio is 5%.
(3) by the wet feed powder measuring fixed amount after stirring, then persistently it is delivered to comminutor and is granulated, the particle diameter of granulation exists
For between 5-8mm.
(4) pellet is dried and sieved, qualified finished product feeding sintering machine sintering, underproof powder, which is returned to, to be made
Grain machine is granulated again.
The prebake pellet that this example is produced, a length of 1.5h when being sintered in sintering furnace, the pellet accounting of explosion is 2%.
Example 2：
(1) mixed powder of 975kg copper-contained sludges (water content 50 ± 2%), 18kg quick limes and 7kg carbon dusts is quantitatively claimed
Weigh and feed preposition feed bin, preposition feed bin is reached after 1 ton of limit of setting, opens bottom pneumatic operated valve, mixed powder entirely falls in pre-
Add water mixer.
(2) the symmetrical measured compound powder spraying progress that adds water is prewetted stirring, the constant height for the use 0.8-1.2Mpa that adds water
Pressure supplies water, and the atomizing pressure of shower nozzle is between 1-1.2Mpa, and water droplets diameter is between 50-150 μm, to wet while adding water
Material is stirred to be broken up with high speed fly cutter, is stirred 3 minutes, and water material weight ratio is 7%.
(3) by the wet feed powder measuring fixed amount after stirring, then persistently it is delivered to comminutor and is granulated, the particle diameter of granulation exists
For between 5-8mm.
(4) pellet is dried and sieved, qualified finished product feeding sintering machine sintering, underproof powder, which is returned to, to be made
Grain machine is granulated again.
The prebake pellet that this example is produced, a length of 1.8h when being sintered in sintering furnace, the pellet accounting of explosion is 3%.
Examples detailed above shows that copper-contained sludge granulation of the invention and the equipment and technique of prebake can be handled effectively
Copper-contained sludge, improves the treatment effeciency of copper-contained sludge, reduces the energy consumption of processing equipment, and the pellet quality produced is high.
Claims (10)
1. a kind of copper-contained sludge granulation and the equipment of prebake, it is characterised in that：Lifting including handling direction arrangement along material
Machine（1）, steady feed bin（2）, drawing-in device（4）, preposition feed bin（5）, pre-add water mixer（8）, rearmounted feed bin（17）, comminutor
（20）With drying screening plant（22）；The preposition feed bin（5）, pre-add water mixer（8）, rearmounted feed bin（17）From top to bottom set
Put, preposition feed bin（5）On be provided with the overall weighing device of feed bin（6）, bottom is provided with pneumatic operated valve（7）；The pre-add water mixer
（8）Stirring is realized with breaing up, inner upper is provided with atomizer（14）, atomizer（14）It is connected with water supply installation, adds water in advance
Mixer（8）Bottom is provided with pneumatic discharge valve（9）；The rearmounted feed bin（17）On be provided with level-sensing device（15）With lower level-sensing device
（16）, rearmounted feed bin（17）Lower section is provided with measuring belt scale（18）；The rearmounted feed bin（17）, comminutor（20）With drying sieve
Separating device（22）Between material is transmitted by belt conveyor.
2. a kind of copper-contained sludge granulation according to claim 1 and the equipment of prebake, it is characterised in that：The steady feed bin
（2）It is provided with weighing sensor（3）, steady feed bin（2）Top is provided with overfall.
3. a kind of copper-contained sludge granulation according to claim 1 and the equipment of prebake, it is characterised in that：The dress that supplies water
Put including screw pump（10）, water tank（11）, water pump（12）And electro-hydraulic reversing valve（13）；The water pump（12）For to water tank（11）
Supply water, the screw pump（10）For by water tank（11）In water through electro-hydraulic reversing valve（13）It is delivered to pre-add water mixer（8）
Interior atomizer（14）；The electro-hydraulic reversing valve（13）Pass through water lines and atomizer respectively（14）, screw pump（10）With
Water tank（11）It is connected.
4. a kind of copper-contained sludge granulation according to claim 1 and the equipment of prebake, it is characterised in that：It is described pre- to add water
Mixer（8）Material is stirred and broken up by the way of the combination of positive and negative pair of ribbon, plow-shape stirring blade and high speed fly cutter.
5. a kind of copper-contained sludge granulation according to claim 1 and the equipment of prebake, it is characterised in that：The drying sieve
Separating device（22）It is provided with pellet entrance, pellet outlet, hot-wind inlet, exhaust outlet and waste outlet；The hot-wind inlet with
Sintering furnace hot air discharge mouthful is connected, and pellet is dried using residual heat from kiln furnace, and the exhaust outlet is connected with deduster.
6. a kind of copper-contained sludge granulation according to claim 1 and the equipment of prebake, it is characterised in that：The drying sieve
Separating device（22）Waste outlet comminutor is connected to by belt conveyor（20）, underproof powder is back to comminutor
（20）Again granulate.
7. using a kind of copper-contained sludge granulation equipped according to claim 1 and the process of prebake, its feature exists
In comprising the following steps：
（1）The compound powder of copper-contained sludge, quick lime and carbon dust is subjected to quantitative weighing and feeding；
（2）The symmetrical measured compound powder spraying progress that adds water is prewetted stirring, the constant high-pressure confession added water using 0.8-1.2Mpa
Water, accurate water distribution；Material is sufficiently stirred for three-dimensional agitating mode, aqueous uniform wet feed, water material weight were formed in 3 minutes
Than in 3.5-7%；
（3）By the wet feed powder measuring fixed amount after stirring, then persistently it is delivered to comminutor and is granulated；
（4）Pellet is dried and sieved, qualified finished product feeding sintering machine sintering, underproof powder returns to comminutor weight
New granulation.
8. a kind of copper-contained sludge granulation according to claim 7 and the process of prebake, it is characterised in that：The step
Suddenly（2）Water is delivered to atomizer when adding water by middle spraying with 0.8-1.2Mpa pressure, prewet raw meal powder when, the mist of shower nozzle
Change pressure between 1-1.2Mpa, water droplets diameter is between 50-150 μm.
9. a kind of copper-contained sludge granulation according to claim 7 and the process of prebake, it is characterised in that：The step
Suddenly（2）Middle three-dimensional agitating mode is that the mode of positive and negative pair of ribbon, plow-shape stirring blade and the combination of high speed fly cutter is stirred to material,
When water material weight ratio is 3.5-7%, after stirring 1 minute, water capacity unevenness≤5% of raw material, after stirring 3 minutes, raw material
Water capacity unevenness≤1%.
10. a kind of copper-contained sludge granulation according to claim 7 and the process of prebake, it is characterised in that：It is described
Step（3）In, the particle diameter of comminutor granulation is between 5-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351189.2A CN107055993B (en) | 2017-05-18 | 2017-05-18 | Equipment and process method for copper-containing sludge granulation and pre-drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351189.2A CN107055993B (en) | 2017-05-18 | 2017-05-18 | Equipment and process method for copper-containing sludge granulation and pre-drying |
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| Publication Number | Publication Date |
|---|---|
| CN107055993A true CN107055993A (en) | 2017-08-18 |
| CN107055993B CN107055993B (en) | 2023-04-18 |
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| CN201710351189.2A Active CN107055993B (en) | 2017-05-18 | 2017-05-18 | Equipment and process method for copper-containing sludge granulation and pre-drying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395664A (en) * | 2018-12-24 | 2019-03-01 | 中冶南方都市环保工程技术股份有限公司 | A kind of column activated coke granulating system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5279637A (en) * | 1990-10-23 | 1994-01-18 | Pcl Environmental Inc. | Sludge treatment system |
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| CN109395664A (en) * | 2018-12-24 | 2019-03-01 | 中冶南方都市环保工程技术股份有限公司 | A kind of column activated coke granulating system and method |
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