CN207210288U - Compound fertilizer granulating system - Google Patents
Compound fertilizer granulating system Download PDFInfo
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- CN207210288U CN207210288U CN201720886199.1U CN201720886199U CN207210288U CN 207210288 U CN207210288 U CN 207210288U CN 201720886199 U CN201720886199 U CN 201720886199U CN 207210288 U CN207210288 U CN 207210288U
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- granulation tower
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- compound fertilizer
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Abstract
The utility model is applied to fertilizer production device technical field; provide a kind of compound fertilizer granulating system; including granulation tower, comminutor is provided with granulation tower, comminutor is connected with feeding device; duster is provided with above comminutor; lower section is provided with vibration Wrap device, and the end for vibrating Wrap device is connected to the discharging opening of granulation tower, and discharge outlet is provided with screening machine; screening machine is connected with finished product packing system, and screening machine and granulation tower are also respectively connected with material-returning device.A kind of compound fertilizer granulating system provided by the utility model, the system can not only solve the problems, such as that high tower building height is big, energy consumption is big, amount of investment is big, and can also solve the problems, such as that drum granulating ratio of briquetting is low, insufficient strength of particle.The production of composite fertilizer is carried out by the system, product qualification rate is high, and the granule strength of formation, water-soluble rate, utilization rate are good.
Description
Technical field
The utility model belongs to fertilizer production device technical field, more particularly to a kind of compound fertilizer granulating system.
Background technology
At present, the method and apparatus of compound fertilizer granulating production mainly has high tower fused melt granulated and drum granulating two ways.
Wherein, it is high tower fused melt granulated to have certain height, minimum 75 meters, generally in 90-95 rice, build high tower cost
Height, and material must be transported at the top of high tower, cause huge energy consumption.And product particle size adjustable range is narrower, particularly
The larger product of production particle has certain difficulty.It is not high additionally, due to high-temperature fusant freezing point, i.e. granulating to the cold, by particulate matter
Residence time limitation in tower, particle diameter is big, is not easy to cool down, to bottom of towe after can be fallen deformation, not round and smooth on the contrary.
And drum granulating, have that grain forming is irregular, uneven, ratio of briquetting is relatively low, cause returning charge more, and particle
Intensity it is little, water-soluble rate and utilization rate are relatively low, are easy to run off.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of compound fertilizer granulating system,
The system can not only solve the problems, such as that high tower building height is big, energy consumption is big, amount of investment is big, and can also solve drum granulating into
The problem of type rate is low, the insufficient strength of particle.The production of composite fertilizer is carried out by the system, product qualification rate is high, of formation
Grain intensity, water-soluble rate, utilization rate are good, improve the benefit of existing composite heat transfer.
What the utility model was realized in：A kind of compound fertilizer granulating system, including granulation tower, the granulation tower is interior to be set
Have for being connected with the conveying for conveying fertilizer material to the comminutor of grain at the beginning of aerial injection, formation fertilizer, the comminutor
Device, it is provided with above the comminutor for spraying parcel powder the duster that is wrapped up grain at the beginning of the fertilizer,
It is provided with below the comminutor and wrap up again and with screening and conveying work(for grain at the beginning of the fertilizer to falling
The vibration Wrap device of energy, the end of the vibration Wrap device is connected to the discharging opening of the granulation tower, in the granulation tower
Discharge outlet be provided with screening machine, the screening machine is connected with finished product packing system, and the screening machine and the granulation tower are also
It is respectively connected with the material-returning device for conveying unqualified fertilizer particle.
Specifically, the comminutor includes playpipe, and the playpipe is connected with the feeding device, on the playpipe
It is provided with multiple shower nozzles for being used for grain at the beginning of to aerial injection, formation fertilizer.
Specifically, the duster includes powder uniform device and the powder conduit for conveying parcel powder, the powder
Last uniform device is arranged on the top of the granulation tower and be arranged in parallel with the playpipe.
Specifically, the vibration Wrap device includes the oscillating plate being obliquely installed, and multiple use are offered on the oscillating plate
In the through hole of screening fertiliser granulates, the both ends of the oscillating plate are connected to for driving the oscillating plate is of reciprocating vibration to shake
Dynamic motor.
Specifically, the oscillating plate tilts down setting, the lowermost end of the inclined oscillating plate from the top of granulation tower
It is arranged at the discharge outlet of the granulation tower.
Specifically, the upper and lower wall of the oscillating plate is provided with multiple, and each oscillating plate is obliquely installed, and both ends are distinguished
The vibrating motor is connected with, the discharge outlet of the granulation tower is arranged at positioned at the lowermost end of the oscillating plate of bottommost.
Specifically, it is parallel between the feeding device and the powder conduit for controlling fertilizer material and parcel powder
The interlocking pump of end proportioning.
Specifically, the bottom of the granulation tower is provided with for the conveying heating steam into the granulation tower from bottom to top
Air blower, the air blower are connected with steam input pipe.
Specifically, the top of the granulation tower is connected with for aspirating removing for the granulation tower internal dust by appendix
Dirt device, the dust arrester include air exhauster and sack cleaner, and the air inlet of the air exhauster is connected with the appendix,
The exhaust outlet of the air exhauster is connected with the sack cleaner, and the sack cleaner is also associated with being used to aspirate its internal gas
Body and drain into aerial blower fan, the air exhauster and the sack cleaner are also associated with for by the dust granule dispatch of inside
Dust delivering tube on to the material-returning device.
Specifically, the screening machine includes sifter and the separatory funnel being arranged on below the sifter, the finished product
Packaging system is arranged on below the finished product discharging opening of the separatory funnel.
A kind of compound fertilizer granulating system provided by the utility model, the compound fertilizer granulating system pass through in the top of comminutor
Duster is provided with, and is provided with below comminutor and for grain at the beginning of the fertilizer to falling wrap up again and with sieve
Choosing and the vibration Wrap device of conveying function.So, grain at the beginning of the fertilizer for enabling to eject from comminutor dusts with passing through first
The cladding powder that machine sprays carries out viscous glutinous parcel, cools and solidifies from particle, and can also make incomplete during falling
The first grain of the fertilizer of cooling Vibrotumbling on vibration Wrap device, can carry out parcel shaping again, and enabling fertilizer, just grain is molded
For qualified fertilizer particle.Such a set-up mode, granulation production is carried out without setting the granulation tower of big height, not only reduces system
The cost made, at the same also solve granulation because height deficiency, particle do not complete cooling and existing product qualified rate it is low the problem of.
Compound fertilizer granulating production is carried out by the compound fertilizer granulating system, prilling process step is simple, obtained fertilizer particle is more mellow and fuller,
More regular, shaping qualification rate is higher, improves the productivity effect of enterprise.
Brief description of the drawings
Fig. 1 is the compound fertilizer granulating system structure diagram that the utility model embodiment provides.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Specific implementation of the present utility model is described in detail below in conjunction with specific embodiment：
As shown in figure 1, the compound fertilizer granulating system provided in the utility model embodiment, including granulation tower 11, it is granulated
It is provided with tower 11 for being connected with to the comminutor 12 of grain at the beginning of aerial injection, formation fertilizer, comminutor 12 for conveying fertilizer
The feeding device 13 of raw material.The fertilizer material is according to certain proportioning by raw materials such as powdery monoammonium phosphate, potassium chloride, additives
Put into mixing channel, be sufficiently mixed into solubility greatly and there is the compound slurry (N P and K eutectic) of certain fluidity, so
Afterwards by feeding device 13 and extrude be transported in comminutor 12, have certain pressure compound slurry by comminutor 12 to
Aerial spraying and grain drop at the beginning of forming fertilizer, to carry out follow-up production and processing.
Specifically, as shown in figure 1, in the utility model embodiment, to reduce the construction cost of compound fertilizer granulating system
With improve the qualification rate of fertilizer particle formed product, and solve tradition and be granulated using fusion method because of height deficiency, particle is complete
Cool down and the defects of product qualification rate is low be present, be used to spray parcel powder by being provided with the top of comminutor 12 come to fertilizer
The material duster (not indicated in figure) that just grain is wrapped up, the parcel powder are mixed by powder such as potash fertilizer, trace elements.
The lower section of comminutor 12 is provided with the vibration Wrap device 15 wrapped up again for grain at the beginning of the fertilizer to falling, and this shakes
Dynamic Wrap device 15 has screening and conveying function, and the first grain of fertilizer for enabling to fall in the above vibrates in cladding powder to be turned over
Rolling, glutinous parcel powder is glued, the end of vibration Wrap device 15 is connected to the discharging opening 111 of granulation tower 11, in going out for granulation tower 11
Screening machine 16 is provided with material mouth 111, screening machine 16 is connected with finished product packing system 17, and screening machine 16 and granulation tower 11 also connect
It is connected to the material-returning device 18 for conveying unqualified fertilizer particle.By such setting, make at the beginning of being ejected into aerial formation fertilizer
The drop of grain can carry out viscous glutinous parcel with parcel powder first, and be cooled down during whereabouts, and not cooling completely
Fertiliser granulates after dropping on vibration Wrap device 15, due on vibration Wrap device 15 covered with cladding powder, thus
Vibration Wrap device 15, which can drive, falls the continuous Vibrotumbling of the fertilizer particle fallen on, is rolled in cladding powder,
The fertilizer particle not cooled down completely now can then continue viscous glutinous parcel with parcel powder, make particle it is more mellow and fuller, it is more regular, into
Type rate is higher, lifts the qualification rate of product.Finally parcel completes the discharging opening 111 that formed fertilizer particle passes through granulation tower 11
Exit into screening machine 16 and sieved, meet defined fertilizer particle and enter packaging system progress cooling packing,
And fertilizer particle as defined in not meeting then is arranged to on material-returning device 18, acted as after finally being crushed by disintegrating machine with raw material fine powder one
Heater Posterior circle is rejoined for returning charge to use.
Specifically, in actual production process, grain at the beginning of falling the fertilizer on Wrap device is carrying out cooling parcel again
When, have fertilizer particle and dropped from Wrap device, thus, the bottom of granulation tower 11 is set into funnel, so as to incite somebody to action
The fertilizer particle to drop collects, and is then uniformly discharged on material-returning device 18 again, then carries out carrying out heating melting profit after crushing
With.
Compound fertilizer granulating system provided in the utility model embodiment, by being provided with duster in granulation tower 11
And Wrap device, in the case where both form a complete set of production, after efficiency and shaping that fertilizer particle shaping production can not only be improved
Quality, and such a set-up mode builds the granulation tower 11 formed, and integral constructing is highly low, and small investment, energy consumption is low, overcomes
The problem of height that existing granulation tower 11 needs is big, energy consumption is big, investment is big.Meanwhile by this compound fertilizer granulating system production
The fertilizer particle particle gone out is mellow and full, regular, and product qualification rate is high, and the intensity of particle, water-soluble rate and utilization rate are good, carry significantly
The product quality of Sheng Liao composite fertilizers.
Specifically, referring to Fig. 1, in the utility model embodiment, the comminutor 12 includes playpipe 121, playpipe 121
It is connected with feeding device 13, multiple shower nozzles 122 for being used for grain at the beginning of to aerial injection, formation fertilizer is provided with playpipe 121.This
Sample, the compound pulp extruding with certain fluidity and pressure is delivered in playpipe 121 by feeding device 13, then
By shower nozzle 122, injection is to aerial in granulation tower 11, can disperse granulating during declining in the air, and with it is aerial
Parcel powder is viscous glutinous, then constantly cools and solidifies and forms fertilizer particle.
Specifically, in order to improve sprayed from shower nozzle 122 form fertilizer at the beginning of time for contacting in the air of grain, it is ensured that Neng Gouyu
Spray skyborne cladding powder and farthest realize contact, to improve the quality of the efficiency of cooling and parcel, by shower nozzle 122
Set vertically upward, so as to have maximum vertical penetration, and then the time for falling needs also reaches most long.It is of course also possible to it is
Using by the amesiality set-up mode of shower nozzle 122.
Specifically, as shown in figure 1, the duster includes powder uniform device 141 and the powder for conveying parcel powder is defeated
Pipe 142 is sent, and powder uniform device 141 is arranged on the top of granulation tower 11 and be arranged in parallel with playpipe 121.The powder is equal
Multiple powder injection hole (not shown)s are evenly arranged with cloth device 141, and inside is additionally provided with powder dispenser and (do not shown in figure
Go out), for cladding powder to be evenly distributed at each powder injection hole.So, the parcel powder conveyed by powder conduit 142
Under the distribution of the powder uniform device 141, can uniformly be sprayed at the inside of granulation tower 11, so that it is guaranteed that with fertilizer at the beginning of grain keep
Effectively contact, grain at the beginning of fertilizer is uniformly wrapped up.
Specifically, in the utility model embodiment, as shown in figure 1, the vibration Wrap device 15 includes what is be obliquely installed
Oscillating plate 151, multiple through holes for being used to screen fertiliser granulates are offered on oscillating plate 151, the both ends of oscillating plate 151 connect respectively
There is the vibrating motor 152 for driving 151 screening of reciprocating vibration of oscillating plate.Due in actual production, to the fertilizer being finally molded
The size of particle has certain specification requirement, thus, by offering through hole on oscillating plate 151, and the through hole is big
It is small to be set according to the specification of qualified fertilizer particle.So, vibrating motor 152 drives the up-down vibration of oscillating plate 151, then makes to fall
Grain at the beginning of the fertilizer not yet cooled down completely on oscillating plate 151 rolls along 151 inclined direction of oscillating plate in cladding powder, after
Continuous viscous glutinous parcel powder, and in the process, just grain will fall the small fertilizer of particle diameter from through hole, and meet defined fertilizer
Particle will be rolled to bottom from along 151 inclined direction of oscillating plate, then flow out and enter from the discharging opening 111 of granulation tower 11
Enter into screening machine 16 and further screened.Such a set-up mode, the time of fertilizer just grain cooling is extended, is realized not
Need that the cooling for really building grain at the beginning of very higher position can complete fertilizer will be granulated, simultaneously, moreover it is possible to be molded by oscillating plate 151
The preliminary screening of fertilizer particle afterwards, the screening again of screening machine 16 is then passed through, improves the last product quality of composite fertilizer.
Specifically, as shown in figure 1, oscillating plate 151 tilts down setting, inclined oscillating plate from the top of granulation tower 11
151 lowermost end is arranged at the discharging opening 111 of granulation tower 11.In this way, fertilizer particle is set to complete parcel and preliminary sieve
After point, it can be all flowed into from the discharging opening 111 of granulation tower 11 in screening machine 16.
Specifically, be improve fertilizer at the beginning of grain wrap up effect, by oscillating plate about 151 wall be provided with it is multiple, respectively vibrate
Plate 151 is obliquely installed, and both ends are connected to vibrating motor 152, and the lowermost end positioned at the oscillating plate 151 of bottommost is set
At the discharging opening 111 of granulation tower 11.So, just grain wraps up fertilizer by the Vibrotumbling of multiple oscillating plates 151, it is ensured that
Roundness degree after last fertilizer particle shaping, shape is more regular, improves the qualification rate of product final molding.In actual setting
In, the oscillating plate 151 being respectively obliquely installed can be arranged in parallel or back and forth be arranged alternately that can also be will be each
Oscillating plate 151 is end to end and forms helical form, also disclosure satisfy that the use demand for rolling parcel.In the utility model embodiment
In, the multiple oscillating plates 151 set in granulation tower 11 are by the way of head and the tail are back and forth arranged alternately, it is ensured that the first grain of fertilizer fallen
It can be wrapped up under the common vibration of multiple oscillating plates 151, lift formed product rate.
Referring to Fig. 1, in the utility model embodiment, it is parallel with and is used between feeding device 13 and powder conduit 142
Fertilizer material is controlled with wrapping up the interlocking pump 19 of powder mixture ratio.So, can be to the fertilizer material of input by the interlocking pump 19
And cladding powder is controlled, N P and K eutectic and the proportioning of cladding powder is maintained in rational scope, improve into
Grain rate, returning charge rate is reduced, and then reduce energy consumption.
Specifically, as shown in figure 1, being provided with the bottom of granulation tower 11 for into granulation tower 11, conveying to add from bottom to top
The air blower 21 of vapours, air blower 21 are connected with steam input pipe 211.By setting air blower 21 to be input to vapours
In granulation tower 11, there is provided heat, the material in granulation tower 11 is kept a suitable temperature during granulating, avoid
Just grain has just been cooled down and can not glued glutinous in the viscous parcel powder that bonds to the small fertilizer of particle.And the vapours risen is total to N P and K
The drop of melt and parcel powder have a more fully time of contact, and the water in grain at the beginning of taking away powder during the contact
Point, add the intensity after fertilizer particle granulating.
Specifically, in the utility model embodiment, as shown in figure 1, the top of granulation tower 11 is connected by appendix 23
Have for aspirating the dust arrester of the internal dust of granulation tower 11 (not indicated in figure), dust arrester includes air exhauster 221 and cloth bag
Deduster 222, the air inlet of air exhauster 221 are connected with appendix 23, and exhaust outlet and the sack cleaner 222 of air exhauster 221 connect
Connect, so, the dust laden air in granulation tower 11 is aspirated by air exhauster 221, the dust laden air enters air exhauster 221 and cloth
After in bag dust collector 222, the filtering dust contained in air can be fallen, be then emitted into aerial.And in order to improve filtering after
The efficiency of emptying, the sack cleaner 222 are also associated with draining into aerial blower fan 223 for aspirating its internal gas.In addition,
For improve product recovery utilization rate, air exhauster 221 and sack cleaner 222 be also associated with for by inside dust granule
Dust delivering tube 224 on dispatch to material-returning device 18.Thus, it is possible to it will precipitate in air exhauster 221 and sack cleaner 222
Particle and dust collection, the production of fertilizer is used again to by the conveying of material-returning device 18.The setting of this dust arrester,
The utilization rate of raw material is not only increased, avoids waste, but also is avoided that dust pollutes air, it is economic and environment-friendly.
Specifically, as shown in figure 1, screening machine 16 includes sifter 161 and is arranged on the separatory funnel of the lower section of sifter 161
162, finished product packing system 17 is arranged on the lower section of the finished product discharging opening 163 of separatory funnel 162.Due to the discharging from granulation tower 11
The fertilizer particles of the outflow of mouth 111 are not final qualified product, and some fertilizer particle diameters are excessive, and the diameter also having is too small,
And in order to obtain qualified product, just set screening machine 16 to screen fertilizer particle again, satisfactory fertilizer grain
Son just flows to finished product packing system 17 and carries out that the later stage is such as moistureproof, anti-caking is deposited after handling, and the fertilizer particle of bulky grain by
Thick returning charge mouth 164 flows to material-returning device 18, and little particle fertilizer particle then flows to material-returning device 18 by thin returning charge mouth 165, final logical
Cross after crushing and reuse.In addition, to ensure the cleanliness factor of environment in screening washer 161, it is connected by exhaust tube 166 and air exhauster
Connect, so as to carry out suction dedusting to the dust of its inside, it is ensured that the overall cleanliness factor of production environment.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of compound fertilizer granulating system, including granulation tower, be provided with the granulation tower for aerial injection, form fertilizer
The comminutor of first grain, the comminutor are connected with the feeding device for conveying fertilizer material, it is characterised in that the comminutor
Top be provided with for spray parcel powder come the duster wrapped up grain at the beginning of the fertilizer, the lower section of the comminutor
It is provided with the vibration parcel dress for for grain at the beginning of the fertilizer to falling wrap up again and with screening and conveying function
Put, the end of the vibration Wrap device is connected to the discharging opening of the granulation tower, is set in the discharge outlet of the granulation tower
There is screening machine, the screening machine is connected with finished product packing system, and the screening machine and the granulation tower are also respectively connected with for defeated
Send the material-returning device of unqualified fertilizer particle.
2. compound fertilizer granulating system as claimed in claim 1, it is characterised in that the comminutor includes playpipe, the spray
Penetrate pipe to be connected with the feeding device, multiple sprays for being used for grain at the beginning of to aerial injection, formation fertilizer are provided with the playpipe
Head.
3. compound fertilizer granulating system as claimed in claim 2, it is characterised in that the duster includes powder uniform device and use
In conveying parcel powder powder conduit, the powder uniform device be arranged on the top of the granulation tower and with the injection
Pipe be arranged in parallel.
4. compound fertilizer granulating system as claimed in claim 3, it is characterised in that the vibration Wrap device includes being obliquely installed
Oscillating plate, multiple through holes for being used to screen fertiliser granulates are offered on the oscillating plate, the both ends of the oscillating plate connect respectively
It is connected to for driving oscillating plate vibrating motor of reciprocating vibration.
5. compound fertilizer granulating system as claimed in claim 4, it is characterised in that the oscillating plate is downward from the top of granulation tower
It is obliquely installed, the lowermost end of the inclined oscillating plate is arranged at the discharge outlet of the granulation tower.
6. compound fertilizer granulating system as claimed in claim 4, it is characterised in that wall is provided with more above and below the oscillating plate
Individual, each oscillating plate is obliquely installed, and both ends are connected to the vibrating motor, positioned at the oscillating plate of bottommost
Lowermost end be arranged at the discharge outlet of the granulation tower.
7. compound fertilizer granulating system as claimed in claim 3, it is characterised in that the feeding device and the powder conduit
Between be parallel with for control fertilizer material with wrap up powder mixture ratio interlocking pump.
8. the compound fertilizer granulating system as any one of claim 1 to 7, it is characterised in that the bottom of the granulation tower
The air blower for conveying heating steam into the granulation tower from bottom to top is provided with, the air blower is connected with steam input
Pipe.
9. the compound fertilizer granulating system as any one of claim 1 to 6, it is characterised in that the top of the granulation tower
Dust arrester for aspirating the granulation tower internal dust is connected with by appendix, the dust arrester include air exhauster and
Sack cleaner, the air inlet of the air exhauster are connected with the appendix, and the exhaust outlet of the air exhauster removes with the cloth bag
Dirt device connects, and the sack cleaner is also associated with draining into aerial blower fan for aspirating its internal gas, the air exhauster
With the sack cleaner be also associated with for by inside dust granule dispatch to the material-returning device on dust delivering tube.
10. the compound fertilizer granulating system as any one of claim 1 to 7, it is characterised in that the screening machine includes sieve
Divide device and the separatory funnel being arranged on below the sifter, the finished product packing system is arranged on the finished product of the separatory funnel
Below discharging opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886199.1U CN207210288U (en) | 2017-07-20 | 2017-07-20 | Compound fertilizer granulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886199.1U CN207210288U (en) | 2017-07-20 | 2017-07-20 | Compound fertilizer granulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207210288U true CN207210288U (en) | 2018-04-10 |
Family
ID=61813478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720886199.1U Active CN207210288U (en) | 2017-07-20 | 2017-07-20 | Compound fertilizer granulating system |
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| Country | Link |
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| CN (1) | CN207210288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213845A (en) * | 2017-07-20 | 2017-09-29 | 深圳市芭田生态工程股份有限公司 | The prilling process of compound fertilizer granulating system and compound fertilizer granulating system |
| CN114507102A (en) * | 2022-01-18 | 2022-05-17 | 宁夏西吉县恒丰农业综合开发有限公司 | Organic compound fertilizer for potato original seed planting and preparation device thereof |
-
2017
- 2017-07-20 CN CN201720886199.1U patent/CN207210288U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213845A (en) * | 2017-07-20 | 2017-09-29 | 深圳市芭田生态工程股份有限公司 | The prilling process of compound fertilizer granulating system and compound fertilizer granulating system |
| CN107213845B (en) * | 2017-07-20 | 2023-08-29 | 深圳市芭田生态工程股份有限公司 | Compound fertilizer granulating system and granulating method thereof |
| CN114507102A (en) * | 2022-01-18 | 2022-05-17 | 宁夏西吉县恒丰农业综合开发有限公司 | Organic compound fertilizer for potato original seed planting and preparation device thereof |
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