CN109704863A - A kind of bulky grain sulfur-containing nitrogen fertilizer and preparation method thereof - Google Patents
A kind of bulky grain sulfur-containing nitrogen fertilizer and preparation method thereof Download PDFInfo
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- CN109704863A CN109704863A CN201910123389.1A CN201910123389A CN109704863A CN 109704863 A CN109704863 A CN 109704863A CN 201910123389 A CN201910123389 A CN 201910123389A CN 109704863 A CN109704863 A CN 109704863A
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Abstract
The invention discloses a kind of bulky grain sulfur-containing nitrogen fertilizers and preparation method thereof, including following components in parts by weight: 10-30 parts of small particle urea, 2-4 parts of adhesive for granulating, is granulated curing agent 2-4 parts, 1-2 parts of fertilizer synergist at 61-86 parts of ammonium sulfate.Even particle size of the present invention, appearance is mellow and full, and granule strength is high.Partial size 2.0-4.5mm accounts for 90% or more, not only acts as certain nutrient slowly-released effect, and be very suitable to large-scale mechanized application.
Description
Technical field
The present invention relates to fertilizer field, specially a kind of bulky grain sulfur-containing nitrogen fertilizer and preparation method thereof.
Background technique
China is a large agricultural country, populous, soil depletion, but supports the world Liao Zhan with the arable land for accounting for the world 7%
35% population, fertilizer has served vital among these, and ammonium sulfate is a kind of one of the most widely used nitrogenous fertilizer, custom
Name ammonium sulphate, molecular formula are (NH4)2SO4, soluble easily in water, solubility is higher in water, organic molten insoluble in ethyl alcohol, acetone etc.
Agent belongs to white orthorhombic system crystals, and product can yellowish or grey when being mixed with impurity.Compared to other nitrogen products such as chlorine
Change ammonium and urea, its advantage is that hygroscopicity is relatively small, it is prevented from caking, industrially using also very extensive.It is agriculturally
Applicating history is long, and only crops do not provide N element, and S element necessary to plant growth can also be provided for crops.Sulfuric acid
Ammonium theoretically contains N21.2%, S24.2%, it is a kind of acidic fertilizier, into soil after can generate hydrogen sulfate ion, it is especially suitable
Conjunction is applied on basic soil.It is more and more tighter recently as Law on Environmental Protection Laws & Regulations and corresponding pollutant emission system
Lattice, the SO being discharged into atmosphere2Content is fewer and fewer, and crops are more next by the chance that atmosphere acquisition must produce element S
It is fewer, sulphur fear-chlorion crop such as rape, tobacco and tealeaves etc. are needed especially for height.Therefore, need of the ammonium sulfate as agricultural fertilizer
The amount of asking is increasing.
Ammonium sulfate currently on the market is essentially the needle-shaped or rodlike crystallization that granularity is less than 1mm.Exist in use
Certain problem, little particle or powdery ammonium sulfate poor fluidity, large specific surface area, in packaging, transport, storage and use process
Fugitive dust and moisture absorption agglomeration may occur, influence processing performance and to apply scattered effect, spread after being manured into soil solution rate quickly, when fertilizer efficiency
Between it is short, simultaneously because fertilizer efficiency short time high intensity discharge, it is possible to crop is damaged.It therefore, is main former with ammonium sulfate
Material production bulky grain nitrogenous fertilizer can effectively solve problem above.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of bulky grain sulfur-containing nitrogen fertilizers and preparation method thereof, using following skill
Art scheme:
A kind of bulky grain sulfur-containing nitrogen fertilizer, which is characterized in that the parts by weight of its raw material components are as follows: 10-30 parts of small particle urea, sulfuric acid
61-86 parts of ammonium, is granulated curing agent 2-4 parts, 1-2 parts of fertilizer synergist at 2-4 parts of adhesive for granulating.
Further, the ammonium sulfate is that the ammonium sulfate of three kinds of different-grain diameter sizes mixes, and wherein 10-18 mesh accounts for
10-30%, 18-100 mesh account for 40-50%, more than 100 mesh account for 30-40%.It is theoretical according to granulating method balling-up, compared to same particle size
Material, the material of different-grain diameter have stronger binding force in globulation, are more advantageous to the formation of fertiliser granulates.
Further, the adhesive for granulating is calcium chloride dihydrate, anhydrous calcium chloride, magnesium chloride dihydrate and anhydrous chlorination
One or more of magnesium.
Further, the adhesive for granulating is ferrous sulfate or aluminum sulfate or combinations thereof.
Further, the granulation curing agent is N- butylthiophosphoric triamide, diphenylphosphoryl diamines and cyclohexyl phosphinylidyne
One or more of triamine.
Further, the fertilizer synergist is one or more of poly-aspartic-acid, glutamic acid or polyglutamic acid.
Further, preparation method includes the following steps:
(1) by a certain proportion of small particle urea, ammonium sulfate, adhesive for granulating, granulation curing agent and fertilizer synergist poidometer
Amount is sent into rotary drum granulator after being crushed；
(2) steam is sprayed in pelletizer, is mixed material uniformly and granulating of reuniting, is then dried and sieves, after screening
Bulky grain and fine powder return in pelletizer participates in granulating again；
(3) fertilizer after sieving send finished product packing after supercooling, coating, obtains finished product.
Further, the 3%-4% that quantity of steam accounts for all solids raw material is sprayed in pelletizer, drying machine head temperature is 100-
110℃。
Further, the bulky grain sulfur-containing nitrogen fertilizer, it is characterised in that: finished product grain size 2.0-4.5mm accounts for 90% or more, always
Nitrogen 22-27%, sulfur content are greater than 14.5%, and chloride ion content is less than 3%, more than 20 newton of granule strength.
The present invention has the beneficial effect that:
(1) even particle size of the present invention, appearance is mellow and full, and granule strength is high.Partial size 2.0-4.5mm accounts for 90% or more, not only acts as
Certain nutrient slowly-released effect, and it is very suitable to large-scale mechanized application.Using the method for drum granulating, with chlorination
Calcium, calcium chloride dihydrate, magnesium chloride dihydrate or magnesium chloride or ferrous sulfate or aluminum sulfate replace conventional binders monoammonium phosphate, glue
Property it is stronger, dosage only has 2%-4%, and compared to traditional sulfur-containing nitrogen fertilizer consumption of binder 18%-25%, dosage reduces 80%-90%, can give birth to
Produce inexpensive, not phosphorus element-containing bulky grain composite nitrogen fertilizer；
(2) curing agent N- butylthiophosphoric triamide, diphenylphosphoryl diamines and cyclohexyl phosphoric triamide, the primary amine in material are granulated
Base can be chemically reacted with the sulfate radical of the main matter ammonium sulfate in granulated fertilizer, form spawn, be made entire
Fertiliser granulates form a fine and close entirety, can accelerate the solidification of granulated fertilizer, to improve the particle of bulky grain sulfur-containing nitrogen fertilizer
Intensity, on the other hand, N- butylthiophosphoric triamide, diphenylphosphoryl diamines and cyclohexyl phosphoric triamide are a kind of urase inhibition
Agent can reduce the hydrolysis rate of urea in bulky grain sulfur-containing nitrogen fertilizer, improve the fertilizer efficiency time of bulky grain sulfur-containing nitrogen fertilizer.
(3) ferrous sulfate and aluminum sulfate itself have the function of binder, can also be with simultaneously because it contains sulfate radical
It is granulated curing agent N- butylthiophosphoric triamide, diphenylphosphoryl diamines and cyclohexyl phosphoric triamide to chemically react, generate solidifying
Colloid substance, adhesive property are bigger than ferrous sulfate and aluminum sulfate.
Specific embodiment
Combined with specific embodiments below, further details of elaboration is made to the present invention, but embodiments of the present invention are not
It is confined to the range of embodiment expression.These embodiments are merely to illustrate the present invention, range and is not intended to limit the present invention.
Embodiment 1
By 10kg small particle urea, 85kg ammonium sulfate, 2kg calcium chloride dihydrate, 2kgN- butylthiophosphoric triamide, the poly- Tianmen 1kg
Aspartic acid carries out Weighing respectively, and it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, 100 mesh with
On account for 30%, by the above raw material it is broken after send rotary drum granulator；3kg steam is uniformly sprayed in pelletizer, material is in pelletizer
Reunion granulating, is then dried and sieves, and bulky grain and fine powder return in pelletizer after screening participates in granulating again；After screening
Fertilizer send finished product packing after supercooling, coating, obtain finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 22.04%, sulfur content 20.57%, chloride ion content 1.35%, particle
Intensity 23N.
Embodiment 2
10kg small particle urea, 85kg ammonium sulfate, 2kg calcium chloride, 2kg diphenylphosphoryl diamines, 1kg polyglutamic acid are carried out respectively
Weighing, it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh accounts for 30%, will more than
Rotary drum granulator is sent after raw material is broken；Uniformly spray 3kg steam in pelletizer, material is reunited granulating in pelletizer, then
It is dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer after screening is through being subcooled
But, finished product packing is sent after coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 22.09%, sulfur content 20.61%, chloride ion content 1.58%, particle
Intensity 21N.
Embodiment 3
By 10kg small particle urea, 85kg ammonium sulfate, 2kg magnesium chloride dihydrate, 2kg cyclohexyl phosphoric triamide, 1kg glutamic acid difference
Weighing is carried out, it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh accounts for 30%, will
Rotary drum granulator is sent after the above raw material is broken；Uniformly spraying 3kg steam in pelletizer, material is reunited granulating in pelletizer,
Then it is dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer warp after screening
Finished product packing is sent after supercooling, coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 21.98%, sulfur content 20.53%, chloride ion content 1.49%, particle
Intensity 22N.
Embodiment 4
By 10kg small particle urea, 85kg ammonium sulfate, 2kg ferrous sulfate, 2kgN- butylthiophosphoric triamide, the poly- lucid asparagus of 1kg
Propylhomoserin carries out Weighing respectively, and it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh
30% is accounted for, send rotary drum granulator after the above raw material is crushed；3kg steam is uniformly sprayed in pelletizer, material is rolled into a ball in pelletizer
It is polymerized to grain, is then dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；After screening
Fertilizer send finished product packing after supercooling, coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 22.06%, sulfur content 20.66%, chloride ion content 1.15%, particle
Intensity 58N.
Embodiment 5
10kg small particle urea, 85kg ammonium sulfate, 2kg aluminum sulfate, 2kg diphenylphosphoryl diamines, 1kg polyglutamic acid are carried out respectively
Weighing, it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh accounts for 30%, will more than
Rotary drum granulator is sent after raw material is broken；Uniformly spray 3kg steam in pelletizer, material is reunited granulating in pelletizer, then
It is dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer after screening is through being subcooled
But, finished product packing is sent after coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 22.09%, sulfur content 20.68%, chloride ion content 1.21%, particle
Intensity 52N.
Embodiment 6
By 10kg small particle urea, 85kg ammonium sulfate, 2kg ferrous sulfate, 2kg cyclohexyl phosphoric triamide, 1kg glutamic acid respectively into
Row Weighing, it is 50% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh accounts for 30%, will be with
Rotary drum granulator is sent after upper raw material is broken；Uniformly spray 3kg steam in pelletizer, material is reunited granulating in pelletizer, so
After be dried and sieve, bulky grain and fine powder return in pelletizer and participate in granulating again after screening；Fertilizer after screening passes through
Finished product packing is sent after cooling, coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 22.02%, sulfur content 20.63%, chloride ion content 1.29%, particle
Intensity 50N.
Embodiment 7
By 20kg small particle urea, 75kg ammonium sulfate, 2kg calcium chloride dihydrate, 2kg cyclohexyl phosphoric triamide, 1kg glutamic acid difference
Weighing is carried out, it is 40% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 30%, 18-100 mesh, more than 100 mesh accounts for 30%, will
Rotary drum granulator is sent after the above raw material is broken；3.5kg steam is uniformly sprayed in pelletizer, material is agglomerated into pelletizer
Grain, is then dried and sieves, and bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer after screening
Finished product packing is sent after supercooling, coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 24.51%, sulfur content 18.12%, chloride ion content 1.36%, particle
Intensity 25N.
Embodiment 8
30kg small particle urea, 61kg ammonium sulfate, 4kg magnesium chloride, 4kg cyclohexyl phosphoric triamide, 1kg glutamic acid are carried out respectively
Weighing, it is 40% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 30%, 18-100 mesh, more than 100 mesh accounts for 30%, will more than
Rotary drum granulator is sent after raw material is broken；Uniformly spray 4kg steam in pelletizer, material is reunited granulating in pelletizer, then
It is dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer after screening is through being subcooled
But, finished product packing is sent after coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 26.22%, sulfur content 14.78%, chloride ion content 1.85%, particle
Intensity 27N.
Embodiment 9
By 25kg small particle urea, 65kg ammonium sulfate, 4kg magnesium chloride, 4kgN- butylthiophosphoric triamide, 2kg glutamic acid difference
Weighing is carried out, it is 40% that wherein the ammonium sulfate of 10-18 mesh, which is the ammonium sulfate of 20%, 18-100 mesh, more than 100 mesh accounts for 40%, will
Rotary drum granulator is sent after the above raw material is broken；Uniformly spraying 4kg steam in pelletizer, material is reunited granulating in pelletizer,
Then it is dried and sieves, bulky grain and fine powder return in pelletizer after screening participates in granulating again；Fertilizer warp after screening
Finished product packing is sent after supercooling, coating, obtains finished product；
Finished product detects by analysis, and result is as follows: total nitrogen 24.74%, sulfur content 15.76%, chloride ion content 1.88%, particle
Intensity 28N.
The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to aforementioned each reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified, or equivalent substitution of some or all of the technical features；And
These are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of bulky grain sulfur-containing nitrogen fertilizer, which is characterized in that the bulky grain sulfur-containing nitrogen fertilizer raw material include in parts by weight with
Lower component: 10-30 parts of small particle urea, 2-4 parts of adhesive for granulating, is granulated curing agent 2-4 parts, fertilizer increasing at 61-86 parts of ammonium sulfate
Agent 1-2 parts of effect.
2. bulky grain sulfur-containing nitrogen fertilizer according to claim 1, it is characterised in that: the ammonium sulfate is that three kinds of different-grain diameters are big
Small ammonium sulfate mixes, and wherein 10-18 mesh weight accounts for 10%-30%, and 18-100 mesh weight accounts for 40%-50%, more than 100 mesh accounts for
30-40%。
3. bulky grain sulfur-containing nitrogen fertilizer according to claim 1, it is characterised in that: the adhesive for granulating is calcium chloride dihydrate
Or anhydrous calcium chloride or magnesium chloride dihydrate and anhydrous magnesium chloride.
4. bulky grain sulfur-containing nitrogen fertilizer according to claim 1, it is characterised in that: the adhesive for granulating be ferrous sulfate or
Person's aluminum sulfate or combinations thereof.
5. bulky grain sulfur-containing nitrogen fertilizer according to claim 1, it is characterised in that: the granulation curing agent is that N- butyl is thio
Phosphoric triamide or diphenylphosphoryl diamines or cyclohexyl phosphoric triamide or combinations thereof.
6. bulky grain sulfur-containing nitrogen fertilizer according to claim 1, it is characterised in that: the fertilizer synergist is poly-aspartic
Acid or glutamic acid or polyglutamic acid or combinations thereof.
7. bulky grain sulfur-containing nitrogen fertilizer preparation method as claimed in any one of claims 1 to 6, which is characterized in that the method includes
Following steps:
1) drum granulating is sent into after being crushed small particle urea, ammonium sulfate, adhesive for granulating, granulation curing agent and fertilizer synergist
In machine；
2) steam is sprayed in pelletizer, is mixed material uniformly and granulating of reuniting, is then dried and sieves, it is big after screening
Particle and fine powder return in pelletizer participates in granulating again；
3) fertilizer after sieving send finished product packing after supercooling, coating, obtains finished product.
8. according to the method described in claim 7, it is characterized by: sprinkling quantity of steam accounts for whole in the step 2) pelletizer
The 3%-4% of solid material ratio, drying machine head temperature are 100-110 DEG C.
9. according to the method described in claim 7, it is characterized by: the step 3) finished product grain size 2.0-4.5mm account for 90% with
On, total nitrogen 22-27%, sulfur content is greater than 14.5%, and chloride ion content is less than 3%, more than 20 newton of granule strength.
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| CN114702061A (en) * | 2022-04-02 | 2022-07-05 | 中南大学 | Granulation method of fine-particle titanium-rich material |
| EP4067324A1 (en) * | 2021-03-31 | 2022-10-05 | SKW STICKSTOFFWERKE PIESTERITZ GmbH | Granulated ph-neutral urea ammonium sulfate fertilizer with urease inhibitor |
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