CN107365173A - A kind of calcium ammonium nitrate fertilizer and its preparation method and application - Google Patents
A kind of calcium ammonium nitrate fertilizer and its preparation method and application Download PDFInfo
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- CN107365173A CN107365173A CN201710705865.1A CN201710705865A CN107365173A CN 107365173 A CN107365173 A CN 107365173A CN 201710705865 A CN201710705865 A CN 201710705865A CN 107365173 A CN107365173 A CN 107365173A
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- Prior art keywords
- calcium
- ammonium nitrate
- preparation
- fertilizer
- calcium ammonium
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- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 title claims abstract description 92
- 239000003337 fertilizer Substances 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 74
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 70
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 37
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 17
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 8
- 210000003608 fece Anatomy 0.000 claims abstract description 4
- 239000010871 livestock manure Substances 0.000 claims abstract description 4
- 239000012141 concentrate Substances 0.000 claims description 24
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 21
- 239000011575 calcium Substances 0.000 claims description 21
- 229910052791 calcium Inorganic materials 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 229910001576 calcium mineral Inorganic materials 0.000 claims description 16
- 235000019738 Limestone Nutrition 0.000 claims description 14
- 239000006028 limestone Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 12
- 239000000706 filtrate Substances 0.000 claims description 11
- 239000002671 adjuvant Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 4
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 4
- 239000000811 xylitol Substances 0.000 claims description 4
- 229960002675 xylitol Drugs 0.000 claims description 4
- 235000010447 xylitol Nutrition 0.000 claims description 4
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920001661 Chitosan Polymers 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- ZXNIRGPMYQWIJS-UHFFFAOYSA-O azanium azane nitrate Chemical compound [N+](=O)([O-])[O-].[NH4+].N ZXNIRGPMYQWIJS-UHFFFAOYSA-O 0.000 claims description 2
- ODWUWCGCBFIGKX-UHFFFAOYSA-N N.[Ca++].[O-][N+]([O-])=O Chemical compound N.[Ca++].[O-][N+]([O-])=O ODWUWCGCBFIGKX-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 235000015170 shellfish Nutrition 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 20
- 241000196324 Embryophyta Species 0.000 description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 description 9
- 239000002689 soil Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 235000019482 Palm oil Nutrition 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002540 palm oil Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 241000276489 Merlangius merlangus Species 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A kind of calcium ammonium nitrate fertilizer and its preparation method and application, is related to fertilizer preparing technical field, and the preparation method includes adding liquefied ammonia into calcium nitrate solution, obtains calcium ammonium nitrate solution.Excessive nitric acid is neutralized by adding liquefied ammonia, the nitric acid of excess is converted into ammonium nitrate, while have adjusted solution ph, adds the nitrogen content of final finished.Preparation method practicality simple to operate, it is low to device requirement, it is adapted to large-scale industrial production.It is high that the nitrogen content of calcium ammonium nitrate fertilizer is prepared by above-mentioned preparation method, more disclosure satisfy that in growing process to the demand of nitrogen.Applied using the calcium ammonium nitrate fertilizer as base manure on nonirrigated farmland, the calcium ammonium nitrate fertilizer can meet great demand of the plant for nitrogen, and give plant supplementing calcium element simultaneously.
Description
Technical field
The present invention relates to fertilizer preparing technical field, in particular to a kind of calcium ammonium nitrate fertilizer and preparation method thereof
And application.
Background technology
Calcium ammonium nitrate is the new and effective compound fertilizer of a kind of nitrogenous and quick-acting calcium, and its fertilizer efficiency is fast, there is the quick spy for mending nitrogen
Point, nitrogenous fertilizer necessary to it not only contains plant, calcium is also add, nutrient is more comprehensive than ammonium nitrate, and plant can directly inhale
Receive.Meanwhile calcium ammonium nitrate category neutral fertilizer, physiological phenomenon degree is small, has improving effect to acid soil.Acid-base value after being manured into soil
It is small, soil hardening will not be caused, soil can be made to become loose.The concentration of activated aluminum can be reduced simultaneously, reduce active phosphorus fixation,
And the water-soluble calcium provided, the resistance of plant for disease can be improved.Beneficial microorganism activity in soil can be promoted.
Moreover, prior art is when preparing calcium ammonium nitrate fertilizer, mainly using green stone ore deposit or lime stone and nitric acid reaction,
Calcium nitrate solution is obtained, then excessive nitric acid is neutralized with ammonium nitrate and pulverized limestone.And with the addition of pulverized limestone, it can cause
To calcium ammonium nitrate fertilizer in, the content of calcium is higher, and relative, and the content of nitrogen is then reduced accordingly.But for common
For plant, it is far longer than demand for calcium for the demand of nitrogen, so, develop a kind of high calcium ammonium nitrate of new nitrogen content
Fertilizer is extremely necessary.
The content of the invention
The first object of the present invention is to provide a kind of preparation method of calcium ammonium nitrate fertilizer, and its practicality simple to operate is right
Equipment requirement is low, and the high calcium ammonium nitrate fertilizer of nitrogen content can be prepared.
The second object of the present invention is to provide a kind of calcium ammonium nitrate fertilizer, and it passes through the preparation of above-mentioned calcium ammonium nitrate fertilizer
Method is prepared, and its nitrogen content is high, more disclosure satisfy that demand of the plant for nitrogen.
The third object of the present invention is to provide a kind of application of calcium ammonium nitrate fertilizer.
What embodiments of the invention were realized in：
A kind of preparation method of calcium ammonium nitrate fertilizer, it includes：
Liquefied ammonia is added into calcium nitrate solution, obtains calcium ammonium nitrate solution；Control the dosage of liquefied ammonia so that calcium ammonium nitrate is molten
In liquid：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
A kind of calcium ammonium nitrate fertilizer, it uses the preparation method of above-mentioned calcium ammonium nitrate fertilizer to be made；Preferably, calcium ammonium nitrate
The particle diameter of fertilizer is 2~4mm.
A kind of application of above-mentioned calcium ammonium nitrate fertilizer, applied using calcium ammonium nitrate fertilizer as base manure on nonirrigated farmland.
The beneficial effect of the embodiment of the present invention is：
The embodiments of the invention provide a kind of preparation method of calcium ammonium nitrate fertilizer, the preparation method includes molten to calcium nitrate
Liquefied ammonia is added in liquid, obtains calcium ammonium nitrate solution.In traditional handicraft, using addition ammonium nitrate and lime stone into calcium nitrate solution
To neutralize acid excessive in calcium nitrate solution, cause calcium content in final finished higher.And the system that the embodiment of the present invention is provided
Preparation Method is then that excessive nitric acid is neutralized by adding liquefied ammonia, and the nitric acid of excess is converted into ammonium nitrate, have adjusted solution
While pH value, the nitrogen content of final finished is added.Preparation method practicality simple to operate, it is low to device requirement, it is adapted to big
Technical scale metaplasia is produced.
The embodiment of the present invention additionally provides a kind of calcium ammonium nitrate fertilizer, and it passes through the preparation method of above-mentioned calcium ammonium nitrate fertilizer
It is prepared, the nitrogen content of the calcium ammonium nitrate is high, more disclosure satisfy that in growing process to the demand of nitrogen.
The embodiment of the present invention additionally provides a kind of application of above-mentioned calcium ammonium nitrate fertilizer, and it is using calcium ammonium nitrate fertilizer as base
Fertilizer is applied on nonirrigated farmland, and the calcium ammonium nitrate fertilizer can meet great demand of the plant for nitrogen, and be supplemented simultaneously to plant
Calcium constituent.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
A kind of calcium ammonium nitrate fertilizer of the embodiment of the present invention and its preparation method and application is specifically described below.
The embodiment of the present invention provides a kind of preparation method of calcium ammonium nitrate fertilizer, and it includes：
Liquefied ammonia is added into calcium nitrate solution, obtains calcium ammonium nitrate solution；Control the dosage of liquefied ammonia so that calcium ammonium nitrate is molten
In liquid：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
Calcium nitrate solution is to be mixed with to obtain with salpeter solution by the pretreatment material of calcium mineral matter, it is preferable that calcic
Mineral matter includes at least one of lime stone and green stone ore deposit.Lime stone and green stone ore deposit be in nature reserves compared with horn of plenty
Mineral matter rich in calcium salt, its main component are calcium carbonate.It is mixed with salpeter solution, calcium ion is combined with nitrate ion
Calcium nitrate solution is generated, the nitrogen in nitric acid is fixed up in the form of nitrate nitrogen, forms the nitrogen that crops easily absorb
Nutrient.And carbanion is then under the action of an acid, generation carbon dioxide release, new foreign ion will not be introduced.Preferably,
The content of nitric acid is 35~40wt% in salpeter solution.Using the nitric acid in the concentration range, reaction rate can be slowed down, allow two
Carbonoxide is slowly discharged, and can effectively prevent slug, so as to avoid the waste of raw material.Further, calcium mineral
The pretreatment material of matter and the mass ratio of salpeter solution are 1：(1~2).Generally during reaction, excessive nitric acid can be used
Solution, the calcium carbonate in solution is set fully to react.Meanwhile may in pretreatment material of the excessive nitric acid to calcium mineral matter
Existing other metal oxide impurities, can also there is good dissolution, so as to be beneficial to the subsequently removing to these impurity.
Further, the pretreatment material of calcium mineral matter is to dry calcium mineral matter at 115~120 DEG C, and machinery removes
It is miscellaneous, grinding sieving, screenings is then subjected to hydrocyclone separation technology under conditions of water velocity is 0.08~0.10m/s and obtained
Arrive.
First, dried under conditions of being 115~120 DEG C in temperature after calcium mineral matter is cleaned.When being dried, adopt
With the mode of constant temperature drying, to ensure that uniform moisture evaporates in calcium mineral matter, temperature change is reduced in calcium mineral matter
The influence of chemical composition.
Then, cool down, mechanical admixture is removed after cooling.Mechanical admixture includes：Rubble, iron filings, sand etc. are not soluble in water
Material.
Then, grinding sieving, 30~40 mesh are ground to by calcium mineral matter.The purpose of sieving is because calcium mineral matter has
Caking phenomenon, sub-sieve need to be first passed through and carry out rough segmentation, remove large granular impurity, avoid influenceing the separation effect of follow-up hydrocyclone separation technology
Fruit.
Screenings is subjected to hydrocyclone separation technology under conditions of water velocity is 0.08~0.10m/s again, contained
The pretreatment material of calcium carbonate.The present invention is because each in calcium mineral matter using the reason for water conservancy cyclonic separation method separation impurity
The difference in density be present in kind impurity (including many oxide, for example, iron oxide, aluminum oxide etc.) and main component (calcium carbonate)
It is different, impurity is separated with calcium hydroxide by the water velocity in 0.08~0.10m/s.And if directly using traditional centrifugation
Separation method, then the unconspicuous situation of layering occurs, and calcium carbonate and impurity can not be separated.
Preferably, with liquefied ammonia at -20~0 DEG C, the pH value of calcium nitrate solution is adjusted to neutral or alkalescent, then is heated up
To 80~90 DEG C of 30~60min of reaction, calcium ammonium nitrate solution is obtained.The boiling point of liquefied ammonia is relatively low, by the temperature control of addition -20
In the range of~0 DEG C, liquefied ammonia scattering and disappearing in adding procedure can be effectively reduced.Meanwhile the solubility of liquefied ammonia at low temperature is preferable,
Liquefied ammonia is added under low temperature, liquefied ammonia can be made more preferably to be dissolved in calcium nitrate solution.Liquefied ammonia and nitric acid excessive in calcium nitrate solution
Reacted, while pH value of solution is adjusted, generate ammonium nitrate, liquefied ammonia is fixed in the form of ammonium salt, improves what is finally given
Nitrogen content in fertilizer.Can be that the amount of liquefied ammonia is somewhat excessive during pH is adjusted, make solution entirety pH reach it is neutral or
Alkalescent, preferably 7.5~8.5, to ensure completely to neutralize excess nitric acid.Meanwhile with temperature is subsequently increased to 80~
90 DEG C, the solubility of liquefied ammonia in the solution rapidly diminishes, and excessive liquefied ammonia can form ammonia and be escaped from solution, in solution simultaneously
Too many amino molecule residual is not had, makes solution overall more close neutral.This fertilizer close to neutrality, in use not
The acidifying of soil can be caused, can more be used for the acidity for adjusting soil, the scope of application is more extensive.
A kind of preparation method for calcium ammonium nitrate fertilizer that the embodiment of the present invention is provided, in addition to：By calcium ammonium nitrate solution
Filtering, filtrate are granulated after evaporation and concentration, and ammonium nitrate ammonia calcareous fertilisers material is made.
Preferably, by filtrate be 110~140 DEG C in temperature under conditions of to be concentrated by evaporation to concentration be 95~98wt%, obtain
To concentrate feed.Concentration to filtrate can reduce the content of moisture and amino molecule in final finished.Inventor passes through creativeness
Work find, concentrate the filtrate to 95~98wt%, moisture is moderate in final finished, beneficial in granulation process be beneficial to obtain
Preferable particle shape.Meanwhile the content of amino molecule is relatively low, the nitrogen in fertilizer exists with nitre state and ammonium state, and the overall fertilizer efficiency of fertilizer is more
It is high.
Further, concentrate feed is mixed and is granulated with binding agent, fertilizer efficiency adjuvant.Wherein, the dosage of binding agent is
0.1~0.5wt% of concentrate feed；The dosage of fertilizer efficiency adjuvant is 1~3wt% of concentrate feed.Binding agent is by fertilizer efficiency adjuvant bag
Concentrate feed surface is overlayed on, product fertilizer efficiency is on the one hand improved, other hand, nitre can be extended by the fertilizer efficiency adjuvant for being used as coating
The duration of sour ammonium calcareous fertilisers effect.Simultaneously as binding agent using calcium ammonium nitrate with separated as fertilizer efficiency adjuvant, can avoid because
Calcium ammonium nitrate is directly contacted and reacted with some fertilizer efficiency adjuvants (such as borax or boric acid), causes to reduce fertilizer efficiency.
Wherein, binding agent includes at least one of palm oil and xylitol, fertilizer efficiency adjuvant be borax, boric acid, sulphur,
One or more combinations in magnesium sulfate, humic acid, oyster shell whiting, organic carbon and chitosan.
The embodiment of the present invention additionally provides a kind of calcium ammonium nitrate fertilizer, and it uses the preparation method of above-mentioned calcium ammonium nitrate fertilizer
It is made.The particle diameter of the calcium ammonium nitrate fertilizer is 2~4mm, and its nitrogen content reaches more than 30wt%
The embodiment of the present invention additionally provides a kind of application of above-mentioned calcium ammonium nitrate fertilizer, using calcium ammonium nitrate fertilizer as base manure
Applied on nonirrigated farmland.Further, above-mentioned calcium ammonium nitrate fertilizer is applied in Soil tillage.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of calcium ammonium nitrate fertilizer, and its preparation method is as follows：
S1. dried under conditions of being 115 DEG C in temperature after lime stone is cleaned, mechanical admixture is removed after cooling.And grind
Honed sieve, lime stone is ground to 30 mesh.Then screenings is subjected to hydraulic cyclone under conditions of water velocity is 0.08m/s
Separation, obtains the pretreatment material containing calcium carbonate.
S2. the salpeter solution that concentration is 35wt% is added in expecting to pretreatment, reacts 4h under conditions of being 65 DEG C in temperature,
Obtain calcium nitrate solution.Wherein, the mass ratio of pretreatment material and salpeter solution is 1：1.5.
S3. -20 DEG C are cooled to, liquefied ammonia is added into calcium nitrate solution, adjusts the pH value of calcium nitrate solution to 7.5.Then,
30min is reacted under conditions of being 80 DEG C in temperature, obtains calcium ammonium nitrate solution.Wherein, when adding liquefied ammonia, adding for liquefied ammonia is controlled
Enter amount so that in calcium ammonium nitrate solution：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
S4. calcium ammonium nitrate solution is filtered, it is 95wt% that filtrate, which is concentrated by evaporation at 110 DEG C to concentration, obtains concentrate feed.
S5. by concentrate feed in sponging granulator granulating and forming.
S6. the palm oil for accounting for concentrate feed 0.2wt% is added into sponging granulator, then adds and accounts for concentrate feed 1wt%'s
Borax.
The particle diameter of calcium ammonium nitrate fertilizer made from the present embodiment is 2mm, and its nitrogen content is 31.4wt%, and calcium content is
11.7wt%.
Embodiment 2
The present embodiment provides a kind of calcium ammonium nitrate fertilizer, and its preparation method is as follows：
S1. dried under conditions of being 120 DEG C in temperature after lime stone is cleaned, mechanical admixture is removed after cooling.And grind
Honed sieve, lime stone is ground to 40 mesh.Then screenings is subjected to hydraulic cyclone under conditions of water velocity is 0.10m/s
Separation, obtains the pretreatment material containing calcium carbonate.
S2. the salpeter solution that concentration is 40wt% is added in expecting to pretreatment, reacts 3h under conditions of being 70 DEG C in temperature,
Obtain calcium nitrate solution.Wherein, the mass ratio of pretreatment material and salpeter solution is 1：2.
S3. 0 DEG C is cooled to, liquefied ammonia is added into calcium nitrate solution, adjusts the pH value of calcium nitrate solution to 8.5.Then, exist
Temperature reacts 60min under conditions of being 80 DEG C, obtains calcium ammonium nitrate solution.Wherein, when adding liquefied ammonia, the addition of liquefied ammonia is controlled
Amount so that in calcium ammonium nitrate solution：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
S4. calcium ammonium nitrate solution is filtered, it is 98wt% that filtrate, which is concentrated by evaporation at 140 DEG C to concentration, obtains concentrate feed.
S5. by concentrate feed in sponging granulator granulating and forming.
S6. the palm oil for accounting for concentrate feed 0.5wt% is added into sponging granulator, then adds and accounts for concentrate feed 3wt%'s
Magnesium sulfate and organic carbon.
The particle diameter of calcium ammonium nitrate fertilizer made from the present embodiment is 4mm, and its nitrogen content is 32.6wt%, and calcium content is
10.3wt%.
Embodiment 3
The present embodiment provides a kind of calcium ammonium nitrate fertilizer, and its preparation method is as follows：
S1. dried under conditions of being 120 DEG C in temperature after green stone ore deposit is cleaned, mechanical admixture is removed after cooling.And grind
Honed sieve, lime stone is ground to 30 mesh.Then screenings is subjected to hydraulic cyclone under conditions of water velocity is 0.10m/s
Separation, obtains the pretreatment material containing calcium carbonate.
S2. the salpeter solution that concentration is 38wt% is added in expecting to pretreatment, reacts 3h under conditions of being 70 DEG C in temperature,
Obtain calcium nitrate solution.Wherein, the mass ratio of pretreatment material and salpeter solution is 1：1.
S3. 0 DEG C is cooled to, liquefied ammonia is added into calcium nitrate solution, adjusts the pH value of calcium nitrate solution to 8.Then, in temperature
Spend to react 30min under conditions of 90 DEG C, obtain calcium ammonium nitrate solution.Wherein, when adding liquefied ammonia, the addition of liquefied ammonia is controlled
Amount so that in calcium ammonium nitrate solution：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
S4. calcium ammonium nitrate solution is filtered, it is 96wt% that filtrate, which is concentrated by evaporation at 130 DEG C to concentration, obtains concentrate feed.
S5. by concentrate feed in sponging granulator granulating and forming.
S6. the xylitol for accounting for concentrate feed 0.1wt% is added into sponging granulator, then adds and accounts for concentrate feed 2wt%'s
Oyster shell whiting and chitosan.
The particle diameter of calcium ammonium nitrate fertilizer made from the present embodiment is 2mm, and its nitrogen content is 30.2wt%, and calcium content is
12.5wt%.
Embodiment 4
The present embodiment provides a kind of calcium ammonium nitrate fertilizer, and its preparation method is as follows：
S1. dried under conditions of being 115 DEG C in temperature after green stone ore deposit is cleaned, mechanical admixture is removed after cooling.And grind
Honed sieve, lime stone is ground to 30 mesh.Then screenings is subjected to hydraulic cyclone under conditions of water velocity is 0.08m/s
Separation, obtains the pretreatment material containing calcium carbonate.
S2. the salpeter solution that concentration is 35wt% is added in expecting to pretreatment, reacts 5h under conditions of being 65 DEG C in temperature,
Obtain calcium nitrate solution.Wherein, the mass ratio of pretreatment material and salpeter solution is 1：2.
S3. 0 DEG C is cooled to, liquefied ammonia is added into calcium nitrate solution, adjusts the pH value of calcium nitrate solution to 7.5.Then, exist
Temperature reacts 30min under conditions of being 90 DEG C, obtains calcium ammonium nitrate solution.Wherein, when adding liquefied ammonia, the addition of liquefied ammonia is controlled
Amount so that in calcium ammonium nitrate solution：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
S4. calcium ammonium nitrate solution is filtered, it is 98wt% that filtrate, which is concentrated by evaporation at 140 DEG C to concentration, obtains concentrate feed.
S5. by concentrate feed in sponging granulator granulating and forming.
S6. the xylitol for accounting for concentrate feed 0.2wt% is added into sponging granulator, then adds and accounts for concentrate feed 1wt%'s
Humic acid.
The particle diameter of calcium ammonium nitrate fertilizer made from the present embodiment is 3mm, and its nitrogen content is 32.1wt%, and calcium content is
11.0wt%.
In summary, the embodiments of the invention provide a kind of preparation method of calcium ammonium nitrate fertilizer, the preparation method to include
Liquefied ammonia is added into calcium nitrate solution, obtains calcium ammonium nitrate solution.In traditional handicraft, using adding nitric acid into calcium nitrate solution
Ammonium and lime stone neutralize acid excessive in calcium nitrate solution, cause calcium content in final finished higher.And the embodiment of the present invention
The preparation method provided is then that excessive nitric acid is neutralized by adding liquefied ammonia, and the nitric acid of excess is converted into ammonium nitrate,
While have adjusted solution ph, the nitrogen content of final finished is added.Preparation method practicality simple to operate, to device requirement
It is low, it is adapted to large-scale industrial production.
The embodiment of the present invention additionally provides a kind of calcium ammonium nitrate fertilizer, and it passes through the preparation method of above-mentioned calcium ammonium nitrate fertilizer
It is prepared, the nitrogen content of the calcium ammonium nitrate is high, more disclosure satisfy that in growing process to the demand of nitrogen.
The embodiment of the present invention additionally provides a kind of application of above-mentioned calcium ammonium nitrate fertilizer, and it is using calcium ammonium nitrate fertilizer as base
Fertilizer is applied on nonirrigated farmland, and the calcium ammonium nitrate fertilizer can meet great demand of the plant for nitrogen, and be supplemented simultaneously to plant
Calcium constituent.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. preparation method of calcium ammonium nitrate fertilizer, it is characterised in that including：Liquefied ammonia is added into calcium nitrate solution, obtains calcium ammonium nitrate solution；Control the dosage of the liquefied ammonia so that the ammonium nitrate In calcium solution：In terms of butt, nitrogen >=30wt%, calcium >=10wt%.
- 2. the preparation method of calcium ammonium nitrate fertilizer according to claim 1, it is characterised in that with the liquefied ammonia -20~0 At DEG C, the pH value of the calcium nitrate solution is adjusted to neutral or alkalescent, then is warming up to 80~90 DEG C of 30~60min of reaction, Obtain the calcium ammonium nitrate solution.
- 3. the preparation method of calcium ammonium nitrate fertilizer according to claim 1, it is characterised in that the calcium nitrate solution be by Pretreatment material and the salpeter solution of calcium mineral matter are mixed with to obtain；Preferably, the calcium mineral matter include lime stone and At least one of green stone ore deposit；Preferably, the content of nitric acid is 35~40wt% in the salpeter solution.
- 4. the preparation method of calcium ammonium nitrate fertilizer according to claim 3, it is characterised in that the calcium mineral matter it is pre- It is to dry the calcium mineral matter at 115~120 DEG C to handle material, mechanical purifying, grinding sieving, then by screenings in water Flow velocity degree obtains to carry out hydrocyclone separation technology under conditions of 0.08~0.10m/s.
- 5. the preparation method of calcium ammonium nitrate fertilizer according to claim 4, it is characterised in that the calcium mineral matter it is pre- The mass ratio of processing material and the salpeter solution is 1：(1~2).
- 6. the preparation method of calcium ammonium nitrate fertilizer according to claim 1, it is characterised in that also include：By the nitric acid Ammonium calcium solution is filtered, and filtrate is granulated after evaporation and concentration, and ammonium nitrate ammonia calcareous fertilisers material is made；Preferably, the filtrate is existed It is 95~98wt% that temperature is concentrated by evaporation to concentration under conditions of being 110~140 DEG C.
- 7. the preparation method of calcium ammonium nitrate fertilizer according to claim 6, it is characterised in that be concentrated by evaporation the filtrate The concentrate feed obtained afterwards is mixed and is granulated with binding agent, fertilizer efficiency adjuvant；Preferably, the dosage of the binding agent is described dense Contract the 0.1~0.5wt% expected；Preferably, the dosage of the fertilizer efficiency adjuvant is 1~3wt% of the concentrate feed.
- 8. the preparation method of calcium ammonium nitrate fertilizer according to claim 7, it is characterised in that the binding agent includes palm At least one of oil and xylitol；Preferably, the fertilizer efficiency adjuvant is borax, boric acid, sulphur, magnesium sulfate, humic acid, shellfish One or more combinations in shell powder, organic carbon and chitosan.
- 9. a kind of calcium ammonium nitrate fertilizer, it is characterised in that use calcium ammonium nitrate fertilizer according to any one of claims 1 to 8 Preparation method be made；Preferably, the particle diameter of the calcium ammonium nitrate fertilizer is 2~4mm.
- 10. a kind of application of calcium ammonium nitrate fertilizer as claimed in claim 9, it is characterised in that by the calcium ammonium nitrate fertilizer Applied as base manure on nonirrigated farmland.
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| CN114671722A (en) * | 2022-04-25 | 2022-06-28 | 杨云芳 | Preparation process of degradable strong water-absorption double-slow-release water-retention fertilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951933A (en) * | 2011-08-19 | 2013-03-06 | 交城县三喜化工有限公司 | Production method of granulated calcium ammonium nitrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951933A (en) * | 2011-08-19 | 2013-03-06 | 交城县三喜化工有限公司 | Production method of granulated calcium ammonium nitrate |
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| Title |
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| 秋: "连续法生产硝酸铵钙", 《化学世界》 * |
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|---|---|---|---|---|
| CN114671722A (en) * | 2022-04-25 | 2022-06-28 | 杨云芳 | Preparation process of degradable strong water-absorption double-slow-release water-retention fertilizer |
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