CN107082731A - A kind of prilling process of particle nitrogen fertilizer - Google Patents
A kind of prilling process of particle nitrogen fertilizer Download PDFInfo
- Publication number
- CN107082731A CN107082731A CN201710151227.XA CN201710151227A CN107082731A CN 107082731 A CN107082731 A CN 107082731A CN 201710151227 A CN201710151227 A CN 201710151227A CN 107082731 A CN107082731 A CN 107082731A
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- CN
- China
- Prior art keywords
- lignite
- nitrogen fertilizer
- ammonium chloride
- prilling process
- slurry
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- 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
- C05G3/80—Soil conditioners
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of prilling process of particle nitrogen fertilizer, it is by calcium slag and water by weight 1：0.5 2 ratio is well mixed, and forms slurry, slurry is heated to add after 50 100 DEG C into the mixture of ammonium chloride, bentonite and lignite three, is fully mixed, and is granulated, and packaging is sieved in drying after cooling.High using this method product balling ratio, nitrogen content is more than 22%.In addition, humic acid in the middle trace element and lignite that contain in calcium slag is brought into product, the fertilizer efficiency of the nitrogenous fertilizer can be increased, and it is environmentally safe, improve resource utilization.
Description
Technical field
The present invention relates to fertilizer field, more particularly to a kind of prilling process of particle nitrogen fertilizer.
Background technology
Ammonium chloride is clear crystal or white crystalline powder, is a kind of instant nitrogenousfertilizer, nitrogen content is 25% or so, in agriculture
Nitrogen application can be made in industry.At present, mainly there is following several method using Production of Ammonium Chloride bulky grain nitrogenous fertilizer：1. crystallizer is changed
Operating condition obtain the ammonium chloride crystals body of bulky grain, but this method operating condition is strict, and particle maximum gauge is 1mm left
It is right；2. the dry ammonium chloride of proper ratio and wet ammonium chloride are squeezed into the graininess chlorination of suitable particle diameter using Squeezinggranulator
Ammonium, this technological process is long, and particle is non-round, and the corrosivity to equipment is big, and production cost is high；3. united pelleting process, its granulating is former
Reason is the amount of liquid phase that is produced by salt autolysis of base fertilizer of certain fineness, and particle is promoted continuous by mechanical agitation
Under motion, storeroom mutually collides, extrudes, rolls and makes it close and be molded, reunites and adheres to granulating.
When producing calcium ammonium nitrate, nitrophosphate fertilizer or calcium nitrate, decomposing phosphorite by using nitric acid or green stone, hydrogen-oxygen are generally used
Change the raw materials such as calcium, generation acidolysis insoluble matter (hereinafter referred to as calcium slag) during this, generally as offal treatment after press filtration, but
By probing into discovery, the calcium slag is a kind of viscous gel products, containing nitro state nitrogen and abundant middle trace element, such as calcium,
Magnesium, sulphur, iron, manganese etc..Calcium slag causes the waste of resource as offal treatment.
The content of the invention
The present invention provides a kind of prilling process of particle nitrogen fertilizer, and particle nitrogen is produced as binding agent using the low calcium slag of cost
Fertilizer, reduces production cost, realizes recycling for resource.
To solve above-mentioned technical problem, the present invention uses following technical scheme：
A kind of prilling process of particle nitrogen fertilizer, step is as follows：
By calcium slag and water by weight 1：0.5-2 ratio is well mixed, and forms slurry, slurry is heated into 50-100 DEG C
Add into the mixture of ammonium chloride, bentonite and lignite three, fully mix afterwards, granulate, packaging is sieved in drying after cooling.
It is preferred that, described ammonium chloride, bentonite, lignite, slurry weight part ratio are 10：0-1：0-1：1-3.
It is preferred that, the calcium slag is the mixing that nitric acid dissolves one or both of the acid non-soluble substance that phosphorus ore or green stone are produced
Thing.
It is preferred that, described granulation is granulated using disc granulation or roller.
It is preferred that, described ammonium chloride is ammonium nitrate powder, and the bentonite and lignite cross 50 eye mesh screens.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Particle nitrogen fertilizer produced by the invention overcomes that crystallisation output is small and the small shortcoming of particle diameter, also relative to extrusion
Increase roundness of granules, it is to avoid the wasting of resources.In the present invention, using calcium slag as binding agent produce particle nitrogen fertilizer, its cost it is low and
Balling ratio is high.And calcium slag is a kind of viscous gel products, containing nitro state nitrogen and abundant middle trace element, such as calcium, magnesium,
Sulphur, iron, manganese etc., increase fertilizer efficiency, can promote plant growth and development, and improve resource utilization.In addition, patent of the present invention
It is middle to introduce in lignite granulation, lignite containing abundant humic acid, with fertilizer synergistic, improved soil, stimulate plant growth, improvement
The functions such as agricultural product quality.Granulated using this patent formula, production cost is relatively low, and its product is a kind of High-quality fertilizer, is had
Economical and practical value.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is present invention process flow chart.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.Embodiments of the present invention include but is not limited to following reality
Apply example.
The technical scheme is that：
By calcium slag and water by weight 1：0.5-2 ratio is well mixed, and forms slurry, slurry is heated into 50-100 DEG C
Add into the mixture of ammonium chloride, bentonite and lignite three, fully mix afterwards, granulate, drying is sieved after cooling, packaging.
Wherein, described ammonium chloride, bentonite, lignite, slurry weight ratio are 10：0-1：0-1：1-3；
Wherein, the calcium slag is the mixing that nitric acid dissolves one or both of the acid non-soluble substance that phosphorus ore or green stone are produced
Thing, usually produces the acid non-soluble substance of calcium nitrate, calcium ammonium nitrate or nitrophosphate fertilizer；
Wherein, described ammonium chloride is ammonium nitrate powder, and the bentonite and lignite cross 50 eye mesh screens；
Wherein, granulation mode is：Particle nitrogen fertilizer is produced using calcium slag as binding agent, by ammonium chloride and sodium bentonite, brown
Coal is put into the disk or roller operated with certain speed by belt conveyor, and calcium is sprayed into compound by prilling spry
Drying screening is carried out after the mixed liquor of slag and water, granulating；
Wherein, regulation measure during granulation：When material is more dry, certain water vapour or water is sprayed into material, so that production
Product obtain suitable particle diameter, if material overly moist, reduce steam or water consumption；
Wherein, during disc granulation, 30-60 DEG C of disc tilt angle, in prilling spry and disk material at a certain angle away from
From 1-2m, spray pressure is 0.3-0.5MPa.When roller is granulated, spray pressure is 0.3-0.5MPa.
[embodiment 1]
A kind of prilling process of particle nitrogen fertilizer as shown in Figure 1, step is as follows：
The calcium slag produced in calcium ammonium nitrate production process is taken, the calcium slag water content about 40% after press filtration；Then by after press filtration
Calcium slag and water with 1：1 ratio is mixed, stirring, is heated to 60-80 DEG C, is incubated in storage tank standby.
Disk is installed in 45 DEG C of inclinations angle, and prilling spry is with 45 ° of tops of material in disk apart from 1.2m or so, prilling spry
Operating pressure 0.4MPa.
Powdery ammonium chloride, bentonite, lignite, calcium slag mixed liquor add ratio 10：0.5：0.25：2.5 proportions.
Bentonite and lignite of the particle diameter below 50 mesh after powdery ammonium chloride, screening are put into disk to mix, the mixing of calcium slag
Slurry sprays to mixed material by prilling spry in vaporific.Material is more dry during granulation, and certain steam or water is sprayed into material,
So that product obtains suitable particle diameter.By disc granulation, mixture gradually balling-up.Cooling, screening, unqualified part is by crushing
Enter back into production system.Screening obtains particle diameter in 2-4.75mm accountings ＞ more than 70%, and granulation product is more rounded, and hardness is fitted
Preferably.It is 22.45% to analyze nitrogen content.
[embodiment 2]
A kind of prilling process of particle nitrogen fertilizer as shown in Figure 1, step is as follows：
Take produced during Phosphate Fertilizer Production calcium slag (product after press filtration, moisture content about 50%), with water with 3：2 ratios
Example mixing, stirring is heated to 70-90 DEG C, is incubated in storage tank standby.
It is 10 that powdery ammonium chloride, bentonite, the mixed serum of calcium slag and water, which add ratio,：0.5：3, mixed slurry shower nozzle work
Make pressure 0.4MPa.
Bentonite of the particle diameter below 50 mesh after powdery ammonium chloride, screening is mixed by proportioning input roller, the mixing of calcium slag
Slurry is sprayed by shower nozzle in vaporific.When material is more dry during granulation, certain steam or water is sprayed into material, so that product is obtained
To suitable particle diameter.Granulated, mixture gradually balling-up, cooled down by roller, sieved unqualified part and enter back into production by crushing
System.Screening obtains particle diameter in 2-4.75mm accountings ＞ more than 62%, and granulation product is more rounded, and hardness is suitable.Analysis nitrogen contains
Measure as 23.16%.
[embodiment 3]
A kind of prilling process of particle nitrogen fertilizer as shown in Figure 1, step is as follows：
Take produced in calcium nitrate production process calcium slag (product after press filtration, moisture content about 45%), with water with 5：4 ratios
Mixing, stirring, is heated to 50 DEG C, is incubated in storage tank standby.
It is 10 that the mixed serum of powdery ammonium chloride, calcium slag and water, which adds ratio,：3, mixed slurry operating pressure at sprinkler
0.4MPa。
Powdery ammonium chloride input roller is mixed, calcium slag mixed material slurry is sprayed by shower nozzle in vaporific.During granulation material compared with
When dry, certain steam or water is sprayed into material, so that product obtains suitable particle diameter.Granulated by roller, mixture is gradually
Balling-up, cooling sieves unqualified part and enters back into production system by crushing.Screening obtains particle diameter in 2-4.75mm accountings ＞
More than 62%, and granulation product is more rounded, hardness is suitable.It is 22.75% to analyze nitrogen content.
[embodiment 4]
A kind of prilling process of particle nitrogen fertilizer as shown in Figure 1, step is as follows：
Take produced during Phosphate Fertilizer Production calcium slag (product after press filtration, moisture content about 50%), with water with 1：2 ratios
Example mixing, stirring is heated to 100 DEG C, is incubated in storage tank standby.
Powdery ammonium chloride, bentonite, lignite, calcium slag mixed liquor add ratio 10：1：1：1 proportions, mixed slurry
Operating pressure at sprinkler 0.4MPa.
Bentonite and lignite of the particle diameter below 50 mesh after powdery ammonium chloride, screening are pressed into proportioning input roller to mix, calcium
Dregs mixing material slurry is sprayed by shower nozzle in vaporific.When material is more dry during granulation, certain steam or water is sprayed into material, so that
Product obtains suitable particle diameter.Granulated, mixture gradually balling-up, cooled down by roller, sieve unqualified part by crushing to enter again
Enter production system.Screening obtains particle diameter in 2-4.75mm accountings ＞ more than 62%, and granulation product is more rounded, and hardness is suitable.Point
It is 23.04% to analyse nitrogen content.
[embodiment 5]
A kind of prilling process of particle nitrogen fertilizer as shown in Figure 1, step is as follows：
The calcium slag produced in calcium ammonium nitrate production process is taken, the calcium slag water content about 40% after press filtration；Then by after press filtration
Calcium slag and water with 1：0.5 ratio is mixed, stirring, is heated to 50 DEG C, is incubated in storage tank standby.
It is 10 that powdery ammonium chloride, bentonite, lignite, the mixed serum of calcium slag and water, which add ratio,：0.5：0.5：:1.5, mix
Close slurry spray nozzle operating pressure 0.4MPa.
Bentonite, lignite of the particle diameter after powdery ammonium chloride, screening below 50 mesh are mixed by proportioning input roller, calcium slag
Mixed slurry is sprayed by shower nozzle in vaporific.When material is more dry during granulation, certain steam or water is sprayed into material, so that production
Product obtain suitable particle diameter.Granulated, mixture gradually balling-up, cooled down by roller, sieved unqualified part and entered back into by crushing
Production system.Screening obtains particle diameter in 2-4.75mm accountings ＞ more than 62%, and granulation product is more rounded, and hardness is suitable.Analysis
Nitrogen content is 22.91%.
It is embodiments of the invention as described above.The present invention is not limited to the above-described embodiments, anyone should learn that
The structure change made under the enlightenment of the present invention, the technical schemes that are same or similar to the present invention each fall within this
Within the protection domain of invention.
Claims (5)
1. a kind of prilling process of particle nitrogen fertilizer, it is characterised in that step is as follows：
By calcium slag and water by weight 1：0.5-2 ratio is well mixed, and forms slurry, and slurry is heated to throw after 50-100 DEG C
In the mixture for adding to ammonium chloride, bentonite and lignite three, fully mix, granulate, packaging is sieved in drying after cooling.
2. a kind of prilling process of particle nitrogen fertilizer according to claim 1, it is characterised in that：Described ammonium chloride, swelling
Soil, lignite, slurry weight ratio are 10：0-1：0-1：1-3.
3. a kind of prilling process of particle nitrogen fertilizer according to claim 1, it is characterised in that：The calcium slag dissolves for nitric acid
The mixture of one or both of the acid non-soluble substance that phosphorus ore or green stone are produced.
4. a kind of prilling process of particle nitrogen fertilizer according to claim 1, it is characterised in that：Described granulation uses disk
Granulation or roller granulation.
5. a kind of prilling process of particle nitrogen fertilizer according to claim 1, it is characterised in that：Described ammonium chloride is nitric acid
Ammonium powder, the bentonite and lignite cross 50 eye mesh screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151227.XA CN107082731A (en) | 2017-03-14 | 2017-03-14 | A kind of prilling process of particle nitrogen fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151227.XA CN107082731A (en) | 2017-03-14 | 2017-03-14 | A kind of prilling process of particle nitrogen fertilizer |
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| Publication Number | Publication Date |
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| CN107082731A true CN107082731A (en) | 2017-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710151227.XA Pending CN107082731A (en) | 2017-03-14 | 2017-03-14 | A kind of prilling process of particle nitrogen fertilizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438136A (en) * | 2018-12-29 | 2019-03-08 | 成都云图控股股份有限公司 | A kind of calcium ammonium nitrate compound fertilizer and preparation method thereof containing nitro humus acid |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN105754606A (en) * | 2016-03-04 | 2016-07-13 | 河南省惠丰肥业有限公司 | Spherical soil conditioner and production process thereof |
-
2017
- 2017-03-14 CN CN201710151227.XA patent/CN107082731A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN105754606A (en) * | 2016-03-04 | 2016-07-13 | 河南省惠丰肥业有限公司 | Spherical soil conditioner and production process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438136A (en) * | 2018-12-29 | 2019-03-08 | 成都云图控股股份有限公司 | A kind of calcium ammonium nitrate compound fertilizer and preparation method thereof containing nitro humus acid |
| 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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Application publication date: 20170822 |