WO2019220350A1 - Matériaux inorganiques revêtus et procédés de formation des matériaux inorganiques revêtus - Google Patents

Matériaux inorganiques revêtus et procédés de formation des matériaux inorganiques revêtus Download PDF

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Publication number
WO2019220350A1
WO2019220350A1 PCT/IB2019/054001 IB2019054001W WO2019220350A1 WO 2019220350 A1 WO2019220350 A1 WO 2019220350A1 IB 2019054001 W IB2019054001 W IB 2019054001W WO 2019220350 A1 WO2019220350 A1 WO 2019220350A1
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WO
WIPO (PCT)
Prior art keywords
coating
inorganic
inorganic material
sulfate
calcium
Prior art date
Application number
PCT/IB2019/054001
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English (en)
Inventor
Allan Amir VARSHOVI
Original Assignee
Varshovi Allan Amir
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Varshovi Allan Amir filed Critical Varshovi Allan Amir
Priority to CA3100264A priority Critical patent/CA3100264A1/fr
Publication of WO2019220350A1 publication Critical patent/WO2019220350A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D5/00—Fertilisers containing magnesium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
    • 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
    • C05C—NITROGENOUS FERTILISERS
    • C05C5/00—Fertilisers containing other nitrates
    • C05C5/04—Fertilisers containing other nitrates containing calcium nitrate
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/005—Post-treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium

Definitions

  • the present disclosure relates to a composition and method of making fertilizer. More specifically, the present invention includes a composition and method for producing an fertilizer with a first inorganic material with a first level of solubility and a coating of a second inorganic material with a second level of solubility that is generally less than the first level of solubility.
  • the present disclosure is further related to a fertilizer composition including an inorganic coating and method of making same.
  • Inorganic fertilizers are typically quick release, which may be desirable for short term crops. However the quick release of nutrients may result in leaching and in nitrogen and phosphorus fertilizer components introduced into the environment. [0005] Inorganic fertilizers fall broadly into three categories: nitrogen fertilizers, such as ammonium nitrate, potassium nitrate, calcium nitrate, and urea; potassium fertilizers, such as potassium sulfate and potassium nitrate; and phosphorus fertilizers, such as diammonium and monoammonium phosphate.
  • nitrogen fertilizers such as ammonium nitrate, potassium nitrate, calcium nitrate, and urea
  • potassium fertilizers such as potassium sulfate and potassium nitrate
  • phosphorus fertilizers such as diammonium and monoammonium phosphate.
  • the present invention provides a composition and method for producing granules of soluble inorganic material with a coating of less soluble inorganic material.
  • the coating of less soluble inorganic materials delays the dissolution of soluble inorganic material contained within the coating.
  • the subject invention provides a homogenous inorganic-based fertilizer coated with an inorganic coating.
  • the homogenous inorganic-based fertilizer is used for plant nutrition and soil fertility.
  • Methods according to the invention involve the application of one or more inorganic compound(s), one or more penetrate(s), and one or more optional supplement(s) into one or more inorganic base material(s), and coating the resultant material with an inorganic material.
  • the methods may result in new products with one or more of: increased nutrients, increased bulk density, and delayed release of the nutrients into an ambient environment.
  • the subject invention may further provide fertilizer products having increased nutrient content and uptake efficiency.
  • the fertilizer products may also have reduced caking associated with organic materials.
  • the composition and method of the subject invention may also improve chemical, physical and agronomic value of the resultant fertilizer products.
  • [OOlllFig. 1 illustrates a method of producing a fertilizer.
  • FIG. 2 illustrates a fertilizer product
  • the present disclosure relates to a composition and method for coating first inorganic material with at least a second inorganic and/or organic material.
  • inorganic materials are used to coat a soluble material; the present invention provides for coating insoluble inorganic material with an inorganic, soluble coating.
  • embodiments of the present invention include method to form an inorganic agronomic fertilizer with an inorganic coating and a resulting composition.
  • the inorganic coating may include, for example, ammonium sulfate.
  • the coating may increase the overall density and nitrogen content of the fertilizer.
  • the present disclosure is further related to a fertilizer product including the inorganic coating.
  • a coating may include a reactive mineral layer.
  • a reactive mineral layer coating may be formed, for example, in situ based upon a combination of multiple components with an inorganic material. The combination allows for a first inorganic material to form and coat a second inorganic material.
  • a coating composition may include at least one calcium salt and at least one sulfate salt.
  • calcium ion (Ca 2+ cation) in the calcium salt may react with sulfate ion (SOA anion) in the sulfate salt to generate calcium sulfate.
  • SOA anion sulfate ion
  • ammonium sulfate and calcium nitrate may react with each other to generate calcium sulfate dihydrate and ammonium nitrate.
  • Embodiments may also include combination of a calcium and a phosphate.
  • the coating may comprise hot ash. Binders, minerals, nutrients and other components may also be added to a mixture to further a particular goal of a final product.
  • a binder may include an organic component.
  • the coating materials of the coating composition may be provided at different concentrations to generate the reactive layer coating with varying thickness.
  • a reaction time for formation of the coating and granulation may vary based on the desired coating thickness and materials used. In some embodiments, the reaction time for formation of the coating and granulation may range from about five minutes to about twenty minutes.
  • an effective inorganic coating composition coating an inorganic material may be between about 3% to 15% of the total weight of the finished product; and in additional embodiments, may include between about 15% and 50% of the total weight of the finished product, depending on the desired deployment of the composite material and formulation utilized.
  • an aggregate of granules of a first inorganic material with coatings of a second inorganic material of various thickness allow for release of the first organic material into an ambient environment via dissolution over a span of time including multiple time periods.
  • an inorganic coating composition may contain between about 6% to 15% nitrogen by weight, 1% to 15% calcium by weight, 1% to 15% potassium by weight, and 1% to 15% sulfur by weight.
  • one or both of calcium sulfate dihydrate and ammonium sulfate may be formed in situ. In situ formation may be accomplished, for example, via a chemical reaction between a calcium salt and a sulfate salt in the coating composition. The substrate material may therefore be coated with a layer comprising ammonium sulfate.
  • Equation 1 An exemplary chemical reaction that can generate an inorganic coating is illustrated by Equation 1:
  • the coating of a second inorganic material may be provided on a first inorganic material comprising a homogenous inorganic-based fertilizer used for plant nutrition and soil fertility.
  • the inorganic-based fertilizer may be produced by applying concentrated liquid(s) and/or dry formulation(s) comprising a mixture of one or more plant nutrient(s), one or more additional inorganic compound(s), one or more penetrate(s), and one or more optional supplement(s) into one or more inorganic base material(s).
  • the inorganic-based fertilizer may include one or more of: ammonium sulfate, ammonium nitrate, potassium nitrate, calcium nitrate, urea, potassium sulfate, rock phosphate, potassium chloride, potassium carbonate, and potassium magnesium sulfate.
  • the coating material may be in form of a liquid coating formulation or composition that may be sprayed on palletized or granulated inorganic base materials.
  • the coating material can be added via direct mixture into the inorganic base material prior to granulation.
  • Tire liquid coating composition may be sprayed using liquid dispenser nozzles.
  • the liquid coating composition may be added uniformly to allow for uniform coating on the inorganic material.
  • the addition of the liquid coating composition may be performed incrementally. The amount added during each increment may depend on the amount of inorganic material and a desired thickness of the coating.
  • a drying process may be executed to dry the coating composition applied on the inorganic material.
  • the coating composition may be dried at a temperature of between about 85°C to 105°C.
  • the coated inorganic material may be dried in a drying apparatus.
  • a dry coating formulation or composition may be applied to wet inorganic base materials prior to the drying and granulation process. Tire dry coating formulation reacts with the wet inorganic base materials and are mixed through the process of granulation.
  • the coating composition may include additional nutrient materials and/or minerals for producing specialty fertilizers.
  • the minerals may provide desirable handling characteristics.
  • a fertilizer product coated with any of the coating compositions of the present disclosure may be blended with other fertilizers.
  • first inorganic material is placed into a setting for forming a coating including a second inorganic material.
  • the setting for forming the coating may include a mixer in a commercial environment.
  • the setting for forming the coating may include an area of ground to be fertilized or other desirable location.
  • a mixer is not required to form a coating of a second inorganic material.
  • the inorganic material comprises a reactive layer and a release layer.
  • step 102 additional soluble components may be placed with the inorganic material.
  • the additional components may include, by way of non limiting example, nitrogen, nutrients, potassium sulfate and/or other additives.
  • step 103 an inorganic salt is reacted with the reactive layer of the inorganic material to produce the inorganic coating in situ.
  • the inorganic salt may be applied to the inorganic matter by spraying the inorganic salt.
  • an optional drying process may be carried out on the inorganic material to terminate chemical activity.
  • the inorganic material coated with a coating of inorganic material may be combined with value-add components and/ or fertilizer, such as plant nutrients and nitrogen.
  • step 106 water is introduced to the system, dissolving the inorganic coating. This highlights the desirable nature of the present invention in circumstances of drought: the inorganic fertilizer does not begin to interact with the soil until water is present to dissolve the inorganic coating.
  • the coating composition may comprise of ammonium sulfate, potassium sulfate, potassium magnesium sulfate, potassium chloride, magnesium sulfate, calcium nitrate and/or calcium ammonium nitrate.
  • the coating may be a reactive mineral layer coating.
  • the coating composition may include at least one calcium salt and at least one sulfate salt. For example, calcium ion (Ca 2+ cation) in the calcium salt may react with sulfate ion (SO4 2 anion) in the sulfate salts to generate calcium sulfate, which may be used as an inorganic coating in some embodiments of the present invention.
  • ammonium sulfate and calcium nitrate may react with each other to generate calcium sulfate dihydrate and ammonium nitrate.
  • the coating materials of the coating composition may be provided at different concentrations to generate the reactive layer coating with varying thickness.
  • the coating composition may be a solution or other liquid formulation that is sprayed on the inorganic material via one or more liquid dispenser nozzles.
  • the coating composition may be a slurry, or other suitable mixture of solid particles and one or more liquids.
  • the coating composition may be prepared by various methods depending on the type of coating composition.
  • the coating composition may be prepared by dissolving one or more inorganic salts in a solvent to produce a coating solution.
  • the coating composition may be prepared by mixing solid particles of two or more inorganic salts.
  • the coating composition may be prepared by suspending solid particles in a liquid to produce a slurrv.
  • the coating composition may be a reactive mineral coating that generates calcium sulfate dihydrate by one or more chemical reaction(s).
  • the coating composition includes at least one calcium salt and at least one sulfate salt that chemically react with each other to generate ammonium sulfate.
  • ammonium sulfate and calcium nitrate react to generate calcium sulfate dihydrate (CaS0 4 .2H 2 0) and ammonium nitrate.
  • the coating composition can include ammonium sulfate, calcium nitrate, potassium sulfate, potassium magnesium sulfate, potassium chloride, magnesium sulfate and calcium ammonium nitrate.
  • the time duration of the coating process and/or reaction time for formation of the coating may be selected appropriately based on a desired thickness of the coating and the materials used.
  • the reaction time for formation of the coating may range from about five minutes to about twenty minutes.
  • Fig. 2 illustrates an inorganic material 200 such as a fertilizer product as it is being formed according to some embodiments of the present disclosure.
  • the inorganic material 200 may be a fertilizer pellet or granule.
  • Essentially inorganic material 200 may have any shape within the scope of the present disclosure, it is illustrated in a generally naturally occurring ovoid shape, but other shapes are within the scope of the present invention. Shapes may therefore include, for example, cylindrical pellets, a sphere, cubes, or other naturally occurring to manufactured shape.
  • the inorganic material 200 includes a core 201 made of an inorganic material, a reactive layer 202, and an outer coating 203 made of an inorganic material.
  • the outer coating 203 may completely or partially enclose the core 201. Further, the outer coating 203 may have one or more layers.
  • the inorganic material includes, for example, one or more of: calcium sulfate dihydrate, ammonium sulfate, and calcium phosphate.
  • the reactive layer 202 reacts with an inorganic salt to form the inorganic outer coating 203.
  • the reactive layer 202 may comprise a sulfate salt, and the inorganic salt may comprise calcium nitrate.
  • the subsequent reaction forms an inorganic outer coating 203 comprising calcium sulfate.
  • the final outer coating 203 may have a uniform thickness or a varying thickness. In some embodiments, the final outer coating 203 may have a thickness between 10 microns and 100 microns.
  • an inorganic coating such as ammonium sulfate
  • the inorganic coating such as ammonium sulfate, may comprise 1% to 15% of the total weight of a resulting inorganic material 200.
  • the inorganic material 200 with the outer coating 203 may resist auto-combustion and provide more favorable handling conditions.
  • the outer coating 203 may also provide the inorganic material 200 with increased nitrogen content.
  • the inorganic material 200 may have increased nutrient content and uptake efficiency.
  • the inorganic material 200 may contain (by weight) up to 15% nitrogen; up to 10% phosphorus; up to 10% potassium; up to 10% calcium; up to 5% magnesium; up to 5% iron; up to 0.05% zinc; up to 0.5% manganese; up to 0.05% copper; and up to 0.01 % boron.
  • each of the expressions “at least one of A, B and C”, “at least one of A, B, or C”, “one or more of A, B, an C", “one or more of A, B, or C” and "A, B, and / or C” means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B and C together.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

L'invention concerne une composition et un procédé de production d'un matériau inorganique avec un revêtement inorganique. Le revêtement inorganique peut comprendre du sulfate d'ammonium. La présente invention concerne également un engrais ayant un revêtement inorganique. Un procédé selon la présente invention comprend la granulation d'un matériau inorganique et le revêtement du matériau organique in situ avec une composition de revêtement réactif.
PCT/IB2019/054001 2018-05-14 2019-05-14 Matériaux inorganiques revêtus et procédés de formation des matériaux inorganiques revêtus WO2019220350A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA3100264A CA3100264A1 (fr) 2018-05-14 2019-05-14 Materiaux inorganiques revetus et procedes de formation des materiaux inorganiques revetus

Applications Claiming Priority (2)

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US201862671150P 2018-05-14 2018-05-14
US62/671,150 2018-05-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708276A (en) * 1966-07-13 1973-01-02 Gewerk Victor Chem Werke Fertilizer coated with discontinuous layer
US4026696A (en) * 1975-02-24 1977-05-31 Union Oil Company Of California Particulate multicomponent soil additive
JPS559683A (en) * 1979-05-17 1980-01-23 Ig Tech Res Inc Granular fire resistant material
CN107245001A (zh) * 2017-05-26 2017-10-13 河南省科学院地理研究所 一种功能性缓释肥料及其生产方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708276A (en) * 1966-07-13 1973-01-02 Gewerk Victor Chem Werke Fertilizer coated with discontinuous layer
US4026696A (en) * 1975-02-24 1977-05-31 Union Oil Company Of California Particulate multicomponent soil additive
JPS559683A (en) * 1979-05-17 1980-01-23 Ig Tech Res Inc Granular fire resistant material
CN107245001A (zh) * 2017-05-26 2017-10-13 河南省科学院地理研究所 一种功能性缓释肥料及其生产方法

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Publication number Publication date
CA3100264A1 (fr) 2019-11-21

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