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 PDF

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Publication number
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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calcium
ammonium nitrate
preparation
fertilizer
calcium ammonium
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江军
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YIXIN CHEMICAL CO Ltd CHENGDU
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YIXIN CHEMICAL CO Ltd CHENGDU
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05CNITROGENOUS FERTILISERS
    • C05C1/00Ammonium nitrate fertilisers

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  • 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

A kind of calcium ammonium nitrate fertilizer and its preparation method and application
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)

  1. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.
CN201710705865.1A 2017-08-16 2017-08-16 A kind of calcium ammonium nitrate fertilizer and its preparation method and application Pending CN107365173A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114671722A (en) * 2022-04-25 2022-06-28 杨云芳 Preparation process of degradable strong water-absorption double-slow-release water-retention fertilizer

Citations (1)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
秋: "连续法生产硝酸铵钙", 《化学世界》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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