CN108503440A - A kind of energy-saving processing technique in granular organic fertilizer production - Google Patents
A kind of energy-saving processing technique in granular organic fertilizer production Download PDFInfo
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- CN108503440A CN108503440A CN201810556133.5A CN201810556133A CN108503440A CN 108503440 A CN108503440 A CN 108503440A CN 201810556133 A CN201810556133 A CN 201810556133A CN 108503440 A CN108503440 A CN 108503440A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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Abstract
A kind of energy-saving processing technique in being produced the invention discloses granular organic fertilizer, including raw material disposal and weighing, granulation, drying, finished product screening, packaging.The invention has the advantages that：The granulation process of the production technology of the present invention uses double-layer circular roll screen extension set; the double-layer circular roll screen extension set forms an open-circuit system with comminutor; the presence of the open-circuit system makes waste product particle and powder that the inefficient cycle be oven-dried, drench again, drying again be omitted; avoid the high energy consumption waste of baking needed, can the energy consumption of direct saving be the 40~70% of traditional handicraft；The technique of the present invention reduces the production cost of enterprise, use cost is reduced to the user of organic fertilizer to having saved the social energy.
Description
Technical field
The invention belongs to organic fertilizer technical field, the energy-saving processing technique in being produced more particularly to a kind of granular organic fertilizer.
Background technology
Since the modernization level of existing agricultural is higher and higher, organic food is increasingly subject to the people's attention；It weighs therewith
Depending on be the ecological agriculture, because only that ecology agricultural can just produce ecology food.In this regard, it either goes into politics
In the dynamics that plan is supported, or in actual action, country is all a large amount of to this input to be supported.The extensive of organic fertilizer answers at present
With being exactly a best explanation, other fertilizer will be gradually replaced after organic fertilizer, and as one in crop growth
Indispensable fertilizer.
According to incompletely statistics, the whole nation two over thousands of family of shared organic fertilizer production enterprise, but the average annual capacity of enterprise is only
More than 9000 tons, the size of capacity for having fully demonstrated each enterprise is irregular, is especially showed in granular organic fertilizer production convexity
Fuel energy consumption accounts for that cost proportion is especially big, comprehensive each enterprise in the technique for using natural gas to be dried as granular organic fertilizer,
Combustion gas cost occupies 35 ~ 38% of totle drilling cost or so.
Organic fertilizer industry is originally an environmental protection industry, but presents high energy consumption present situation.To find out its cause, mainly due to having
Machine fertilizer industry development is too fast, and production technology majority is from ripe compound fertilizer production technology differentiation, although from generally
Solve the capacity requirements of organic fertilizer.But difference in production technology details of organic fertilizer and composite fertilizer or bigger,
As proportioning process and prilling are especially apparent.Because the primary raw material of organic fertilizer is the material rich in organic matter, these materials
Middle fiber content high water absorption ability is strong.And fertilizer granulation is mainly that atomizing spray is granulated, which results in granulation process
The moisture content of finished particle is much larger than composite fertilizer, and moisture is generally all in 30% or more, or even some up to 50% or so.Most
The energy consumption requirement in subsequent technique when carrying out drying dry to particle is caused to increase eventually, by the work at the beginning of year ends 2017 to 2018
Industry 3.02 yuan/cubic metre of natural gas average price（Henan central plain area）It calculates, often the ton gas consumption of one ton of organic fertilizer of production is taken equivalent
RMB is about 90 ~ 160 yuan/ton.If an enterprise based on 100 tons of Organic fertilizer production line of daily output, only day gas consumption 9000 ~
It 16000 yuan, produces 300 days and counts per year, it is exactly 2700000 ~ 4800000 yuan that 30,000 tons of total gas consumptions of organic fertilizer of annual output, which are taken,.This expense
Due to technological reason, energy consumption index and the proportional relationship of production capacity, production capacity more high energy consumption is bigger, and final energy consumption data is big obtain unexpectedly
It is surprising, it is even more with high costs for enterprise.
Existing organic fertilizer production technological process as shown in Figure 1 is a big closed-circuit system of cycle, by market custom requirements
Finished particle grain size will control between 2.5~4.7mm, due to being granulated theory of mechanics and material characteristic, be made in reality
The pelletizing finished product rate of grain machine is only capable of being maintained in the range of 30~60%；If initial material once passes through " automatic weighing batch bin "
After dispensing mixing, it will be directly entered dryer after the granulation of comminutor atomizing spray and be dried, wherein including 30~60%
Finished particle and 70~40% waste product particle or powder to be returned；The heat source hot-air by being generated using a large amount of fuel in
In dryer, after the granule materials mixed are dried；Just enter a screening machine and reject ＜ 2.5mm particles below or powder,
And mixing again is returned, sprays water, be granulated again again；The granule materials of ＞ 2.5mm or more pass through the second dryer successively（Or
First cooler, herein the process equipment configuration feature of each producer be slightly different）Finally just enter after cooler together
Rescreener rejects the waste product bulky grain of ＞ 4.5mm or more, and is returned after broken, mixes, sprays water again, again again
It is granulated；Finished particle between 2.5~4.5mm passes through coating machine, into end product packaging process.Period ＜ 2.5mm
With the material of ＞ 4.5mm, due to being limited to the influence of comminutor finished granule rate, because which comminutor can not reach
100% yield rate, so experiencing in cycles is crushed, remixes, spraying water again, being granulated again, drying again, is cooling etc. again again
The circulation process of whole system could discharge system until the particle of release mesh；So we are by this technique
Flow is referred to as " recycling big closed-circuit system ".Greatest drawback existing for such system, is exactly waste product particle and powder, and participation is
System cycle distance and link, long and excessive, during which experience water spray drenches, dries, drenching again, drying again, required drying energy
Consumption up to 106%~303%, the energy consumption directly wasted is 40~70%, and so big waste, is a kind of economic loss to enterprise, right
Society is a kind of energy loss, with fertilizer is a kind of additional burden to peasant.
Invention content
The purpose of the present invention, which is that, overcomes existing technical problem, provides energy saving in a kind of production of granular organic fertilizer
Production technology.
The present invention adopts the following technical solutions carries out：
A kind of energy-saving processing technique in granular organic fertilizer production, the raw material of the granular organic fertilizer include organic decomposed material,
Adhesive, organic adjuvants, inorganic auxiliary material；The production technology includes the following steps：
A, raw material disposal and weighing；
A1, first by organic decomposed feed powder it is broken after sieve, obtain organic material；Unsifted decomposed material returning charge powder again
It is broken, until sieving；
The organic material sieved in step a1 is carried out ageing caching, obtains organic ageing material by a2；
A3, by adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material be sent into automatic weighing batch bin according to a certain ratio into
Row weighs；
Load weighted adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material in step a3 are sent into mixing machine and are carried out by a4
It is stirred, obtains mixture；
B, it is granulated
The mixture obtained in step a4 feeding comminutor is granulated, obtains wet granular by b1；
B2 sieves the wet granular that step b1 is obtained using double-layer circular roll screen extension set, and the wet granular screened out is respectively to mark
Quasi- grain size wet granular, big grain size wet granular and small particle wet granular three parts；The large-sized wet granular after crushing and
The wet granular of small particle returns to comminutor and is granulated；
C, it dries
The standard grain size wet granular screened out in c1, step b2 by finished particle weigh belt after, be sent into level-one dryer into
Row first drying；
C2, the particle after first drying, which is re-fed into two level dryer, carries out secondary drying；
C3 is finally sent into cooler by the particle of secondary drying, is cooled down, obtain dry particle；
D, finished product screening
The dry particle that step c3 is obtained is sent into finished product inspection sieve, obtains qualified dry particle；Not qualified micro- of the screening
Dry particle is measured to be sent into mixing machine；
E, it packs
Qualified dry particle in step d is subjected to coating, is then fed into finished product material packing machine and is packed.
Preferably, the double-layer circular roll screen extension set of the step b1 includes two layers of sifting bed；Two layers of sifting bed is respectively roll gap
Larger upper sifting bed and the smaller lower sifting bed of roll gap.
Preferably, the wet granular in the step b1 first passes through the upper surface of sifting bed and sifts out big grain size wet granular；It is described big
Particles are transported in crusher and crush；Standard grain size wet granular is sifted out between the upper sifting bed and lower sifting bed；The lower sieve
Small particle wet granular is sifted out below bed.
Preferably, the grain size of the standard grain size wet granular is 2.5~4.5mm；The grain size of the big grain size wet granular is big
In 4.5mm；The grain size of the small particle wet granular is less than 2.5mm.
Preferably, it is dried using hot wind in the level-one dryer, two level dryer；The level-one dryer,
The hot wind used in two level dryer comes from hot-blast stove or natural gas combustion nozzle.
Preferably, the level-one dryer, two level dryer, cooler connect dirt pocket by pipeline；The dirt pocket
The interior high-power air-introduced machine of connection；The high-power air-introduced machine priming level-one dryer, two level dryer, air stream in cooler
It is dynamic.
Preferably, the comminutor is rotary drum granulator or granulating disc.
The action principle of the present invention is as follows：
The production technology of the present invention includes raw material disposal and weighing, granulation, drying, finished product screening, packs above five steps,
A screening machine is wherein increased during granulation, which forms an open circuit circulation mini system with comminutor,
And organically merge in the big closed-circuit system of cycle of the fertile line of entire system, therefore this technical process can be referred to as " small to open greatly
Closed circuit technological process ".
The raw material of the present invention are granulated after the mixing of " automatic weighing batch bin " dispensing using comminutor atomizing spray
Afterwards；It has initially entered double-layer circular roll screen extension set and has carried out particle sorting, after the finished particle between 2.5~4.5mm is sorted out,
By weighing Belt Conveying to dryer, the material for entering dryer at this time is almost finished particle entirely, and finished granule rate is 90%
More than, dryer is only dried finished particle；Double-layer circular roll screen extension set simultaneously can rub waste product bulky grain under broken and sieve
Powder return to mixing machine together, and enter comminutor and carry out secondary granulation, do not have to additionally increase the water sprayed in granulation process
Amount, the seed particles using the ＜ 2.5mm of return make core, can improve the grain forming rate of comminutor；And enter dryer
Finished particle content is high in material, effectively prevents dryer and is dried to the wasteness of waste product particle and powder material, the work
For skill compared with traditional handicraft, this drying mode saves gas energy 40~70% than traditional approach.
This technique is in by dry, final finished product after cooling, and the waste product material accounting that need to return is less than always feeding intake
The 10% of amount will be effectively made because in the small open-circuit system formed by double-layer circular roll screen extension set and comminutor
70~40% waste product particle or powder to be returned of grain machine output, sorts out and has carried out secondary cycle granulation, until Grain growth
After qualified particles, it can just enter drying process；By using the appropriate amount of fuel to match with finished particle doses, generate
Heat source hot-air in dryer, after granule materials heat drying；Pass through the second dryer successively（Or first cooler,
The process equipment configuration feature of each producer is slightly different herein）Finally cooler together, completes heating, the water of finished particle
Divide the technical process of evaporation and particle cooling；Just enter the double mesh screening machines of finished product inspection and rejects the micro of ＞ 4.5mm and ＜ 2.5mm
Waste product bulky grain and powder have belt feeder to be delivered to a micromill, and mixing machine is returned after crushing, and experience is mixed again
It closes, sprays water, is granulated again again；Drying finished particle after cooling between 2.5~4.5mm passes through coating machine, enters
End product packaging process.
Due to being limited to the influence of comminutor finished granule rate because not which comminutor can reach 100% at
Product rate.The material to be returned of ＜ 2.5mm and the ＞ 4.5mm of period accounting 40~70%, by by double-layer circular roll screen extension set and comminutor
The small open-circuit system formed realizes the small system circulation that experience is crushed, remixes, being granulated again, sorting again again
Flow, until the particle of release mesh, can be discharged mini system into the drying of big system, cool down, coating and packaging.
" double-layer circular roll screen extension set " in the present invention, the green-ball of the pellet sintering factory of iron-smelter is granulated in metallurgy industry
With green-ball sieving technology, the used live-roll grizzly of green-ball screening of pellet sintering factory（Also known as round roller is sieved）, it is current all steel
Look forward to the main ripe screening plant generally used.
The present invention increases two kinds of roll gaps of upper layer and lower layer in the structure that original round roller is sieved（4.5mm and 2.5mm）Sifting bed,
Sifting bed sifts out on upper layer big grain size wet granular is sent into crusher and is transmitted back to together with the small particle wet granular that lower layer sifting bed sifts out
Comminutor carries out secondary granulation.The oversize of lower layer's sifting bed is then claimed by finished product between the finished particle of 2.5~4.5mm grain sizes
Finished particle is delivered in the dryer of lower process by amount belt conveyor.
It is that a breakthrough equipment selects to carry out screening to wet granular using round roller screening machine in the present invention.In existing skill
Cylinder round sifter is used to sieve organic fertilizer particles in art, cylinder round sifter has significantly the screening of dry particle
Effect；But for wet granular, since wet granular contains certain moisture and viscosity, and intensity is insufficient, is sieved using cylinder round sifter
It selects wet granular sieve pore can be caused frequently to be blocked by wet granular, or is attached directly on the inner wall of screen drum, then reunite more
Wet granular can not continuously complete screening operation so as to cause screening process inefficiency.
In ancestor source, Eco-fertilizer industry Co., Ltd puts into production use the system at present, in the organic fertilizer production of the said firm
Important function has been played in line, and produces huge energy saving profit economic output as described above, it is therefore " small to open big closed circuit technique
Flow " technology is converted into practice via research and development, and technology is ripe, stablizes, is reliable.
Due to each business equipment configuring condition difference, there is also certain differences for fuel consumption, and be averaged organic fertilizer per ton
Substantially fuel energy consumption is at 90~160 yuan/ton.The data of organic fertilizer branch of reference Chinese agricultural capital circulation association president Fu Chunhua
" number of the enterprise is more than 3500, and organic commercial fertilizer annual output is more than 16,000,000 tons, and fine work organic fertilizer reaches 3,000,000 tons." calculate.
Organic fertilizer gross annual output amount is 19,000,000 tons, in terms of 90~160 yuan/ton of 125 yuan/ton of average value, needed for national organic fertilizer enterprise
Fuel year, energy consumption was 23.75 hundred million yuan.
Great advantage existing for the production technology of the present invention, is exactly that waste product particle and powder are not involved in big system circulation distance
And link, the inefficient cycle be oven-dried, drench again, drying again is during which omitted, avoids the high energy consumption waste of baking needed,
In the actual use of our company can the energy consumption of direct saving be the 40~70% of traditional handicraft.The technique of the present invention is to having saved society
The meeting energy, reduces the production cost of enterprise, use cost is reduced to the user of organic fertilizer.
Small open-circuit system in the present invention is by comminutor, feeding conveyer belt, double-layer circular roll screen extension set, undersize material
Conveyer belt, finished particle weigh belt conveyor composition, and the above equipment can carry out existing equipment according to the demand of this technique
Repacking uses；Equipment in big closed-circuit system is all the technical equipment of maturation；Above each equipment can be according to this hair using assembling
The technological process of bright disclosure is assembled into complete production line.
The invention has the advantages that：
The granulation process of the production technology of the present invention uses double-layer circular roll screen extension set, the double-layer circular roll screen extension set and comminutor shape
At an open-circuit system, the presence of the open-circuit system make waste product particle and powder be omitted be oven-dried, drench again,
The inefficient cycle dried again, avoid baking needed high energy consumption waste, can direct saving energy consumption be traditional handicraft 40~
70%；The technique of the present invention reduces the production cost of enterprise, is reduced to the user of organic fertilizer to having saved the social energy
Use cost.
Description of the drawings
Fig. 1 is existing organic fertilizer production technological process；
Fig. 2 is the production technological process of the present invention.
Specific implementation mode
With specific embodiment, the invention will be further described below, the invention illustrative examples and illustrate to use
Explain the present invention, but not as a limitation of the invention.
Energy-saving processing technique in a kind of production of granular organic fertilizer, includes the following steps：
A, the processing and weighing of the decomposed material of raw material machine, adhesive, organic adjuvants, inorganic auxiliary material
A1, first by organic decomposed feed powder it is broken after sieve, obtain organic material；Unsifted decomposed material returning charge powder again
It is broken, until sieving；
The organic material sieved in step a1 is carried out ageing caching, obtains organic ageing material by a2；
A3, by adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material be sent into automatic weighing batch bin according to a certain ratio into
Row weighs；
Load weighted adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material in step a3 are sent into mixing machine and are carried out by a4
It is stirred, obtains mixture；
B, it is granulated
The mixture obtained in step a4 feeding granulating disc is granulated, obtains wet granular by b1；
The wet granular that step b1 is obtained is sent into double-layer circular roll screen extension set and sieved by b2；The upper sifting bed of double-layer circular roll screen extension set,
Wet granular is sieved into following three kinds of wet granulars by lower sifting bed：Grain size more than the big grain size wet granular of 4.5mm, grain size be 2.5~
Standard grain size wet granular, the grain size of 4.5mm are less than the small particle wet granular of 2.5mm；Large-sized wet granular passes through pulverizer powder
It returns to granulating disc with the wet granular of small particle after broken and is granulated；
C, it dries
After finished particle weighs belt, be sent into level-one dryer makes the standard grain size wet granular screened out in c1, step b2
The hot wind generated with hot-blast stove carries out first drying；
C2, the particle after first drying are re-fed into two level dryer and carry out secondary baking using the hot wind that hot-blast stove generates
It is dry；
C3 is finally sent into cooler by the particle of secondary drying, is cooled down using airflow circulating, obtain dry particle；
D, finished product screening
The dry particle that step c3 is obtained is sent into finished product inspection sieve, obtains qualified dry particle；Not qualified micro- of the screening
Dry particle is measured to be sent into mixing machine；
E, it packs
Qualified dry particle in step d is subjected to coating, is then fed into finished product material packing machine and is packed.
Wherein level-one dryer, two level dryer, cooler connect dirt pocket by pipeline；Dirt pocket is connected with high-power
Air-introduced machine, high-power air-introduced machine priming level-one dryer, two level dryer, air flowing in cooler.
Technical scheme of the present invention is not limited to the limitation of above-mentioned specific embodiment, every to do according to the technique and scheme of the present invention
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (8)
1. the energy-saving processing technique in a kind of granular organic fertilizer production, the raw material of the granular organic fertilizer include organic decomposed
Material, adhesive, organic adjuvants, inorganic auxiliary material；It is characterized in that, the production technology includes the following steps：
A, raw material disposal and weighing；
A1, first by organic decomposed feed powder it is broken after sieve, obtain organic material；Unsifted decomposed material returning charge powder again
It is broken, until sieving；
The organic material sieved in step a1 is carried out ageing caching, obtains organic ageing material by a2；
A3, by adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material be sent into automatic weighing batch bin according to a certain ratio into
Row weighs；
Load weighted adhesive, organic adjuvants, inorganic auxiliary material, organic ageing material in step a3 are sent into mixing machine and are carried out by a4
It is stirred, obtains mixture；
B, it is granulated
The mixture obtained in step a4 feeding comminutor is granulated, obtains wet granular by b1；
B2 sieves the wet granular that step b1 is obtained using double-layer circular roll screen extension set, and the wet granular screened out is respectively to mark
Quasi- grain size wet granular, big grain size wet granular and small particle wet granular three parts；The large-sized wet granular after crushing and
The wet granular of small particle returns to comminutor and is granulated；
C, it dries
The standard grain size wet granular screened out in c1, step b2 by finished particle weigh belt after, be sent into level-one dryer into
Row first drying；
C2, the particle after first drying, which is re-fed into two level dryer, carries out secondary drying；
C3 is finally sent into cooler by the particle of secondary drying, is cooled down, obtain dry particle；
D, finished product screening
The dry particle that step c3 is obtained is sent into finished product inspection sieve, obtains qualified dry particle；Not qualified micro- of the screening
Dry particle is measured to be sent into mixing machine；
E, it packs
Qualified dry particle in step d is subjected to coating, is then fed into finished product material packing machine and is packed.
2. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 1, it is characterised in that：The step
The double-layer circular roll screen extension set of rapid b1 includes two layers of sifting bed；Two layers of sifting bed is respectively that the larger upper sifting bed of roll gap and roll gap are smaller
Lower sifting bed.
3. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 2, it is characterised in that：The step
Wet granular in rapid b1 first passes through the upper surface of sifting bed and sifts out big grain size wet granular；The large-size particles are transported in crusher
It crushes；Standard grain size wet granular is sifted out between the upper sifting bed and lower sifting bed；Wet of small particle is sifted out below the lower sifting bed
Grain.
4. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 3, it is characterised in that：The mark
The grain size of quasi- grain size wet granular is 2.5~4.5mm；The grain size of the big grain size wet granular is more than 4.5mm；Wet of the small particle
The grain size of grain is less than 2.5mm.
5. according to the energy-saving processing technique in a kind of granular organic fertilizer production of claim 1-4 any one of them, feature exists
In：It is dried using hot wind in the level-one dryer, two level dryer；In the level-one dryer, two level dryer
The hot wind used comes from hot-blast stove or natural gas combustion nozzle.
6. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 5, it is characterised in that：Described one
Grade dryer, two level dryer, cooler connect dirt pocket by pipeline；The high-power air-introduced machine of connection in the dirt pocket；Institute
State high-power air-introduced machine priming level-one dryer, two level dryer, air flowing in cooler.
7. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 5, it is characterised in that：It is described to make
Grain machine is rotary drum granulator or granulating disc.
8. the energy-saving processing technique in a kind of granular organic fertilizer production according to claim 6, it is characterised in that：It is described to make
Grain machine is rotary drum granulator or disc granulation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218114A (en) * | 2019-06-10 | 2019-09-10 | 应城市新都化工复合肥有限公司 | A kind of chemical fertilizer automation machining production line |
| CN110627567A (en) * | 2019-10-18 | 2019-12-31 | 华裕农业科技有限公司 | Fertilizer production line and workshop |
| CN110694550A (en) * | 2019-10-15 | 2020-01-17 | 河南龙昌机械制造有限公司 | Efficient energy-saving organic fertilizer granulation system and working method thereof |
| CN111151192A (en) * | 2020-02-23 | 2020-05-15 | 河南龙昌机械制造有限公司 | Organic fertilizer production line |
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| CN111151192A (en) * | 2020-02-23 | 2020-05-15 | 河南龙昌机械制造有限公司 | Organic fertilizer production line |
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