CN110105134A - A kind of compound fertilizer production technology - Google Patents
A kind of compound fertilizer production technology Download PDFInfo
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- CN110105134A CN110105134A CN201910363179.XA CN201910363179A CN110105134A CN 110105134 A CN110105134 A CN 110105134A CN 201910363179 A CN201910363179 A CN 201910363179A CN 110105134 A CN110105134 A CN 110105134A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to compound fertilizer fields, more particularly to a kind of compound fertilizer production technology, including stock, crushing, mixing, granulation, screening, slurry-spraying pelletizing, drying, cooling, screening, coating, filling step, this simple production process, it is high-efficient, at low cost, compound fertilizer granule produced is uniform in size, and particle is smooth.
Description
Technical field
The present invention relates to compound fertilizer field more particularly to a kind of compound fertilizer production technologies.
Background technique
With the development that people live, agricultural is gradually grown, and in order to improve the growing environment and harvest benefit of crops, is needed
Will be according to different seasons, weather, soil environment to farmland Li Sa compound fertilizer, compound fertilizer, which refers to, contains two or more
The chemical fertilizer of nutrient, compound fertilizer have many advantages, such as that nutrient content is high, accessory ingredient is few and physical behavior is good, for balance fertilizing,
Utilization rate of fertilizer is improved, the stable high yield of crop is promoted to have highly important effect.The appearance of usual compound fertilizer is many
Little particle, however traditional production technology is too simple, only simple crushing, mixing, granulation, coating, packaging, in turn result in
Granular size produced is different, and graininess is not full, there is incompleteness or appearance is relatively rough, granular size quality is not
Equilibrium, broadcast application is uneven during resulting in worker's fertilising, meanwhile, the biggish fertilizer crop absorption of particle is simultaneously bad.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, avoid compound fertilizer production technology complicated, fertilizer produced
To expect that particle is different, appearance is coarse, and provides a kind of compound fertilizer production technology, this simple production process is high-efficient, and it is at low cost,
Compound fertilizer granule produced is uniform in size, and particle is smooth.
The purpose of the present invention is what is be achieved by the following measures: a kind of compound fertilizer production technology, comprising the following steps:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and pulverizer is sent into weighing
In, block stock is crushed and is pre-mixed；
B, it mixes: the raw material crushed in a step is sent into the hopper of the second belt weigher, after weighing, be sent into stirring
In mixing machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for
The 2%-5% of mixture gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated, obtains in Squeezinggranulator
Grain, grain diameter 4.0-4.4mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 2.8-
3.1mm is particle A through sieve, and being retained on sieve is particle B, and particle B is returned to the second belt meter by bucket elevator
In the hopper for measuring scale；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while being sprayed to slurry by pump and being turned
Expect that bed, particle A are wrapped up by slurry in drum pelletizer, obtains semi-finished granules, slurry accounts for the 5%-8% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 60-120 DEG C, is dried out
The water content of the particle of dry machine is 1.5%；
G, cooling: sending particle that f step is dried into rotary drum cooler and cool down, particle temperature less than 40 DEG C,
Grain hardness is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.2-5.6mm, through the first sieve
For particle after the second sieve that aperture is 3.0-3.3mm, the particle being retained on the second sieve is conforming particle, through the second sieve
Unqualified particle, is re-fed into the hopper of the second belt weigher by net and to be retained in be unqualified particle on the first sieve
It is interior；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, be sent into after coating feed bin into
Luggage bag, as finished product.
Preferably, in the step e slurry the preparation method comprises the following steps: being continuously added to urea into urea melting device, pass through
Steam boiler provides heat, and temperature is 120-135 DEG C, urea melting is become liquid condition, and potassium chloride is added, then stirred
Uniformly up to slurry, potassium chloride accounts for the 5%-10% of gross mass.
Preferably, the component A is the one or two of urea, ammonium nitrate, and component B is monoammonium phosphate, one kind of potassium chloride
Or two kinds, component C is the one or two of ammonium chloride, sulphur ammonium.
The crushing of a step is in order to more abundant by what is mixed after the crushing of each nutritional ingredient, and b step measures weighing by belt
Moisture can be more accurately added after taking raw material, calculates the inventory of belt weigher, automatically controls amount of water, adjusts material water
Point, avoid manually plus caused by water is adjusted inaccurately or not in time, material is partially dry or partially wet, influence extrusion granulation balling ratio and
The appearance roundness of particle, hardness etc., and the number for adding moisture affects the hardness and particle plasticity of particle, and water accounts for mixed
The 2%-5% of object gross mass, the molding convenient for Squeezinggranulator to particle are closed, mixture is first granulated by step c, then Step d
It is tentatively sieved, screening while also will do it polishing grinding, take out flash and powder fragment, then qualified then carry out e
The slurry-spraying pelletizing of step, it is underproof, it is returned to b step and continuess to mix remodeling, although extrusion granulation product shape is not so good as to turn
The particle rounding of the produced in conventional processes such as drum granulation, slurry granulation；If if chemistry occurs between ingredient component in product particle
Reaction, may cause particle and bursts apart；And the present invention carries out whitewashing package plasticity to extruding pellet product, on the one hand makes outside particle
It goes sightseeing to slide rounding, on the other hand makes storeroom structure more firm, pellet hardness is higher, and nutrient is more uniform, improves product
Attraction and cost have very strong market competition advantage；Particle surface wraps up high temperature urine, improves particle temperature, makes particle
It is easier to dry, reduces drying energy consumption and pellet moisture, the drying of f step is to carry out drying polishing to particle after package slurry
Processing, using the cooling of g step, the screening qualification rate again of h step after drying, is finally packaged as finished product.The production of slurry
It is to be continuously added to urea into urea melting device, provides heat by steam boiler, urea melting is become into liquid condition, is
Urine temperature is reduced, in dissolved urea, potassium chloride is added according to the ratio of 5%-10%, can effectively reduce urea solution temperature
Energy consumption is reduced, and reduces the generation of biuret among urine course of dissolution process；Ratio between each raw material of compound fertilizer can be according to institute
The demand for measuring soil carries out proportional preparation.
Beneficial effects of the present invention: present invention process is simple, at low cost, high production efficiency, can be with by screening repeatedly
The different probability of grain diameter is reduced, by the way that special slurry to be sprayed on particle, particle package is allowed more evenly and to make
The entire outer surface of grain is more smooth, and then can accomplish the uniform of application of each crops during fertilising, promotes crops more
Good absorption.
Present invention process is extrusion cladding fertilizer technique and the combination new process for urinating base (urine) shotcreting process: extrusion granulation is not
It needs to heat and be humidified to material, not only reduce investment outlay, but also energy saving, but also adapt to containing heat sensitive material, such as carbonic acid
The granulation of the ingredients such as hydrogen ammonium and certain organic fertilizers；In process of production without waste water or exhaust gas outlet, do not pollute the environment；Extruding is made
Grain process flow is short, easy to operate, is easy to implement manufacture automatic control, improves production efficiency；To the property and granularity of raw material
Distribution has no special requirements, therefore raw material sources are broader；Production is more flexible, can change the scheme of product at any time, be conducive to small lot
Produce special fertilizer；Granularity Distribution is uniform, will not generate isolation, will not agglomerate.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with the present embodiment, it is clear that described
Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work belongs to this present invention guarantor
The range of shield.
A kind of embodiment 1: compound fertilizer production technology, comprising the following steps:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and pulverizer is sent into weighing
In, block stock is crushed and is pre-mixed；Wherein component A raw material be urea, component B raw material be monoammonium phosphate, potassium chloride,
Component C raw material is sulphur ammonium；
B, it mixes: the raw material crushed in a step is sent into the hopper of the second belt weigher, after weighing, be sent into stirring
In mixing machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for
The 2% of mixture gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated, obtains in Squeezinggranulator
Grain, grain diameter 4.0mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 2.8mm, thoroughly
Crossing sieve is particle A, and being retained on sieve is particle B, and particle B is returned to the material of the second belt weigher by bucket elevator
In bucket；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while being sprayed to slurry by pump and being turned
Expect that bed, particle A are wrapped up by slurry in drum pelletizer, obtains semi-finished granules, slurry accounts for the 5% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 60 DEG C, out dryer
Particle water content be 1.5%；
G, cooling: sending particle that f step is dried into rotary drum cooler and cool down, particle temperature less than 40 DEG C,
Grain hardness is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.2mm, through the particle of the first sieve
After the second sieve that aperture is 3.0mm, the particle being retained on the second sieve is conforming particle, through the second sieve and retention
In being unqualified particle on the first sieve, unqualified particle is re-fed into the hopper of the second belt weigher；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, be sent into after coating feed bin into
Luggage bag, as finished product.
In step e slurry the preparation method comprises the following steps: being continuously added to urea into urea melting device, provided by steam boiler
Heat, temperature are 120 DEG C, urea melting are become liquid condition, and potassium chloride is added, then stirred evenly up to slurry, chlorine
Change potassium and accounts for the 5% of gross mass.
A kind of embodiment 2: compound fertilizer production technology, comprising the following steps:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and pulverizer is sent into weighing
In, block stock is crushed and is pre-mixed；Wherein component A raw material is urea, ammonium nitrate, and component B raw material is potassium chloride, component
C raw material is ammonium chloride, sulphur ammonium；
B, it mixes: the raw material crushed in a step is sent into the hopper of the second belt weigher, after weighing, be sent into stirring
In mixing machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for
The 5% of mixture gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated, obtains in Squeezinggranulator
Grain, grain diameter 4.4mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 3.1mm, thoroughly
Crossing sieve is particle A, and being retained on sieve is particle B, and particle B is returned to the material of the second belt weigher by bucket elevator
In bucket；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while being sprayed to slurry by pump and being turned
Expect that bed, particle A are wrapped up by slurry in drum pelletizer, obtains semi-finished granules, slurry accounts for the 8% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 120 DEG C, out dryer
Particle water content be 1.5%；
G, cooling: sending particle that f step is dried into rotary drum cooler and cool down, particle temperature less than 40 DEG C,
Grain hardness is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.6mm, through the particle of the first sieve
After the second sieve that aperture is 3.3mm, the particle being retained on the second sieve is conforming particle, through the second sieve and retention
In being unqualified particle on the first sieve, unqualified particle is re-fed into the hopper of the second belt weigher；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, be sent into after coating feed bin into
Luggage bag, as finished product.
In step e slurry the preparation method comprises the following steps: being continuously added to urea into urea melting device, provided by steam boiler
Heat, temperature are 135 DEG C, urea melting are become liquid condition, and potassium chloride is added, then stirred evenly up to slurry, chlorine
Change potassium and accounts for the 10% of gross mass.
A kind of embodiment 3: compound fertilizer production technology, comprising the following steps:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and pulverizer is sent into weighing
In, block stock is crushed and is pre-mixed；Wherein, component A is urea, and component B is potassium chloride, and component C is ammonium chloride；
B, it mixes: the raw material crushed in a step is sent into the hopper of the second belt weigher, after weighing, be sent into stirring
In mixing machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for
The 3% of mixture gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated, obtains in Squeezinggranulator
Grain, grain diameter 4.2mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 3.0mm, thoroughly
Crossing sieve is particle A, and being retained on sieve is particle B, and particle B is returned to the material of the second belt weigher by bucket elevator
In bucket；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while being sprayed to slurry by pump and being turned
Expect that bed, particle A are wrapped up by slurry in drum pelletizer, obtains semi-finished granules, slurry accounts for the 7% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 90 DEG C, out dryer
Particle water content be 1.5%；
G, cooling: sending particle that f step is dried into rotary drum cooler and cool down, particle temperature less than 40 DEG C,
Grain hardness is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.5mm, through the particle of the first sieve
After the second sieve that aperture is 3.2mm, the particle being retained on the second sieve is conforming particle, through the second sieve and retention
In being unqualified particle on the first sieve, unqualified particle is re-fed into the hopper of the second belt weigher；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, be sent into after coating feed bin into
Luggage bag, as finished product.
In step e slurry the preparation method comprises the following steps: being continuously added to urea into urea melting device, provided by steam boiler
Heat, temperature are 128 DEG C, urea melting are become liquid condition, and potassium chloride is added, then stirred evenly up to slurry, chlorine
Change potassium and accounts for the 8% of gross mass.
A kind of embodiment 4: compound fertilizer production technology, comprising the following steps:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and pulverizer is sent into weighing
In, block stock is crushed and is pre-mixed；Wherein, component A is urea, ammonium nitrate, and component B is monoammonium phosphate, potassium chloride, group
Dividing C is ammonium chloride, sulphur ammonium.
B, it mixes: the raw material crushed in a step is sent into the hopper of the second belt weigher, after weighing, be sent into stirring
In mixing machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for
The 4% of mixture gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated, obtains in Squeezinggranulator
Grain, grain diameter 4.0mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 2.9mm, thoroughly
Crossing sieve is particle A, and being retained on sieve is particle B, and particle B is returned to the material of the second belt weigher by bucket elevator
In bucket；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while being sprayed to slurry by pump and being turned
Expect that bed, particle A are wrapped up by slurry in drum pelletizer, obtains semi-finished granules, slurry accounts for the 8% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 120 DEG C, out dryer
Particle water content be 1.5%；
G, cooling: sending particle that f step is dried into rotary drum cooler and cool down, particle temperature less than 40 DEG C,
Grain hardness is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.5mm, through the particle of the first sieve
After the second sieve that aperture is 3.3mm, the particle being retained on the second sieve is conforming particle, through the second sieve and retention
In being unqualified particle on the first sieve, unqualified particle is re-fed into the hopper of the second belt weigher；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, be sent into after coating feed bin into
Luggage bag, as finished product.
In step e slurry the preparation method comprises the following steps: being continuously added to urea into urea melting device, provided by steam boiler
Heat, temperature are 125 DEG C, urea melting are become liquid condition, and potassium chloride is added, then stirred evenly up to slurry, chlorine
Change potassium and accounts for the 10% of gross mass.
Claims (3)
1. a kind of compound fertilizer production technology, it is characterised in that: the following steps are included:
A, stock, crushing: component A, B, C raw material being put into the hopper of the first belt weigher, and weighing is sent into pulverizer, will
Block stock is crushed and is pre-mixed；
B, it mixes: the raw material crushed in a step being sent into the hopper of the second belt weigher, after weighing, feeding is stirred
In machine, and water is added into blender according to the amount that belt weigher calculates mixture, stirs evenly, obtain mixture, water accounts for mixing
The 2%-5% of object gross mass；
C, it is granulated: the mixture in b step being sent into uniform distribution in distributing device and is granulated in Squeezinggranulator, obtains particle,
Grain partial size is 4.0-4.4mm；
D, screening polishing: sending the made particle of step c into drum sieve and polished and sieved, mesh size 2.8-3.1mm, thoroughly
Crossing sieve is particle A, and being retained on sieve is particle B, and particle B is returned to the material of the second belt weigher by bucket elevator
In bucket；
E, slurry-spraying pelletizing: the particle A of Step d is fed through in rotary drum granulator, while slurry is sprayed to rotary drum by pump and is made
Expect that bed, particle A are wrapped up by slurry in grain machine, obtains semi-finished granules, slurry accounts for the 5%-8% of semi-finished granules gross mass；
F, it dries: the semi-finished granules of step e is sent into rotary dryer, drying temperature is 60-120 DEG C, out dryer
Particle water content be 1.5%；
G, cooling: the particle that f step is dried is sent into rotary drum cooler and is cooled down, for particle temperature less than 40 DEG C, particle is hard
Degree is greater than 18N；
H, it sieves: g step particle after cooling being crossed into the first sieve that aperture is 5.2-5.6mm, through the particle of the first sieve
After the second sieve that aperture is 3.0-3.3mm, being retained in particle on the second sieve is conforming particle, through the second sieve and
Being retained in is unqualified particle on the first sieve, unqualified particle is re-fed into the hopper of the second belt weigher；
I, coating, filling: the conforming particle in h step being sent into coating machine and carries out coating, and feed bin is sent into after coating and is filled
Bag, as finished product.
2. a kind of compound fertilizer production technology according to claim 1, it is characterised in that: the preparation of slurry in the step e
Method are as follows: urea is continuously added into urea melting device, provides heat by steam boiler, temperature is 120-135 DEG C, will be urinated
Element is melted into liquid condition, and potassium chloride is added, and then stirs evenly up to slurry, potassium chloride accounts for the 5%- of gross mass
10%.
3. a compound fertilizer production technology according to claim 1 or 2, it is characterised in that: the component A is urea, nitre
The one or two of ammonium, component B be monoammonium phosphate, the one or two of potassium chloride, component C be ammonium chloride, sulphur ammonium one kind or
Two kinds.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984851A (en) * | 2022-06-27 | 2022-09-02 | 河南豫能化肥有限公司 | Method and device for manufacturing granular fertilizer by secondary guniting |
| CN115448802A (en) * | 2022-09-26 | 2022-12-09 | 天脊煤化工集团股份有限公司 | Method for producing microbial bacterial fertilizer by using nitrophosphate fertilizer by-product |
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| 徐静安: "《复混肥和功能性肥料生产新工艺及应用技术丛书 生产工艺技术》", 30 September 2000, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984851A (en) * | 2022-06-27 | 2022-09-02 | 河南豫能化肥有限公司 | Method and device for manufacturing granular fertilizer by secondary guniting |
| CN115448802A (en) * | 2022-09-26 | 2022-12-09 | 天脊煤化工集团股份有限公司 | Method for producing microbial bacterial fertilizer by using nitrophosphate fertilizer by-product |
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