WO2022144868A1 - Granules of polyhalite and dolomite - Google Patents
Granules of polyhalite and dolomite Download PDFInfo
- Publication number
- WO2022144868A1 WO2022144868A1 PCT/IL2021/051290 IL2021051290W WO2022144868A1 WO 2022144868 A1 WO2022144868 A1 WO 2022144868A1 IL 2021051290 W IL2021051290 W IL 2021051290W WO 2022144868 A1 WO2022144868 A1 WO 2022144868A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- granule
- polyhalite
- dolomite
- binder
- starch
- Prior art date
Links
- 239000008187 granular material Substances 0.000 title claims abstract description 42
- 239000010459 dolomite Substances 0.000 title claims abstract description 20
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000003337 fertilizer Substances 0.000 claims abstract description 8
- 238000005469 granulation Methods 0.000 claims description 17
- 230000003179 granulation Effects 0.000 claims description 16
- 229920002472 Starch Polymers 0.000 claims description 13
- 239000008107 starch Substances 0.000 claims description 13
- 235000019698 starch Nutrition 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000004111 Potassium silicate Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 235000013379 molasses Nutrition 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- -1 Polyhalite Substances 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 description 1
- 150000005323 carbonate salts Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007909 melt granulation Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/04—Fertilisers containing potassium from minerals or volcanic rocks
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- 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
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Medicinal Preparation (AREA)
Abstract
There is provided herein a fertilizer granule including Polyhalite, Dolomite and a binder, wherein said granule comprises a single strength of at least 3.2 KgF/granule.
Description
GRANULES OF POLYHALITE AND DOLOMITE
Field of the Invention
The present invention relates to the field of composite fertilizers, specifically to production of a fertilizer containing polyhalite and dolomite.
Background of the Invention
To grow properly, plants need nutrients (nitrogen, potassium, calcium, zinc, magnesium, iron, manganese, etc.) which normally can be found in the soil. Sometimes fertilizers are needed to achieve a desired plant growth as these can enhance the growth of plants.
In some places there is necessary to add magnesium to the soil. One option to add extra dose of magnesium is by adding magnesium salts. The magnesium salts can be soluble like magnesium sulphate or insoluble kike magnesium carbonate or double salt like dolomite
Polyhalite is an evaporite mineral, a hydrated sulfate of potassium, calcium and magnesium with formula: K2Ca2Mg(SO4)42H2O. Polyhalite is used as a fertilizer since it contains four important nutrients and is low in chloride:
48% SO3 as sulfate,
14% K2O,
6% MgO,
17% CaO
Dolomite is a double salt containing Calcium Magnesium and carbonate
CaCO3MgCO3
30% CaO,
22% MgO,
65% as CO3
Summary of the invention
According to some demonstrative embodiments, there is provided herein a fertilizer granule comprising Polyhalite, Dolomite and a binder.
According to some embodiments, the granule may have a single strength of at least 3.2 KgF/granule.
According to some embodiments, the binder may be selected from the group comprising Starch, molasse, Fly Ash, calcium oxide, bitumen, Portland cement, cellulose gum, sucrose, water glass, cements, Potassium Silicate and Sodium Silicate. According to some embodiments, the binder may preferably be starch.
According to some embodiments, the starch may be in a concentration of between 0.5- 5% w/w, preferably, between 1-3% w/w.
According to some embodiments, there is provided herein a process for the granulation of Polyhalite and Dolomite comprising mixing Polyhalite and Dolomite in a ratio of between 1 :2 to 2: 1, preferably 1 : 1, in rotating drum; adding binder to said rotating drum; adding water to said rotating drum; and transferring said granules to a dryer.
Detailed Description of the Invention
According to some demonstrative embodiments, there is provided herein a granule comprising Polyhalite and Dolomite in a ratio of between 2: 1 to 1 :2, respectively, and a binder, in a concentration of 1-5% w/w, preferably, in a concentration of 1-2% w/w. According to some demonstrative embodiments, the ratio between Polyhalite and dolomite may be 1 : 1.
According to some demonstrative embodiments, standard granulation processes usually include some basic steps: creation of a nucleus, growth of the nucleus and consolidation followed by destruction of granules, for example, if the granules have a size which is bigger than the desired granule size.
It is therefore important to add water during a standard granulation process to create such a nucleus and start the granulation process.
According to some embodiments, the ordinary granulation process may not be suitable in the case of granulation of insoluble salts like Polyhalite, Ba, Ca, or Mg carbonate salts, Dolomite and the like.
However, changing water content in a granule and deviating from the standard process known in the art may have substantial implications on the strength of the resulting granule.
In addition, according to some embodiments, Polyhalite and Dolomite have similar hardness qualities, which may cause difficulties in the granulation of these substances. According to some embodiments of the present invention, there is provided a granule of Polyhalite and Dolomite comprising at least one binder, e.g., suitable for creating an adhesion between the Polyhalite and Dolomite.
According to some embodiments, the binder may be selected from the group comprising of Starch, molasse, Fly Ash, calcium oxide, bitumen, Portland cement, cellulose gum, sucrose, water glass, cements, Potassium Silicate and Sodium Silicate. According to some preferable embodiments, the binder may be preferably starch.
According to some embodiments, the starch may increase the rate of nucleus growth and consolidation.
Since the binders of this application comprise both basic and acidic functional groups, they all have the ability to forms bonds in a wide pH range. These bonds may cause consolidation due to Van der Waals forces acting between nuclei or via hydrogen bonds. This is especially true in the case of Starch which has both Basic -OH groups and acidic -COOH groups.
According to some demonstrative embodiments, the binder may be at a concentration of between 0.5-5% w/w. more preferably between 1-3% w/w.
According to some embodiments, the PSD of the granule of the present invention may be between 0.5 mm to 3mm, preferably, 2 mm.
According to some embodiments, the strength of the granule of the present invention may be at least 3.2 KgF/granule.
According to some demonstrative embodiments, there is provided herein a process for the preparation of a fertilizer granule comprising
Mixing Polyhalite and Dolomite together with a binder in a rotating drum or pan granulator ,e.g., Eurich, for 1-4 minutes, preferably 2 minutes; Adding 5-15% w/w of water in the form of spray or steam to create a mixture; Mixing the mixture in a rotating drum, e.g., for 2 additional minutes to provide granules; Dry the granules in a dryer, e.g., at a temperature of around 150°C.
According to some demonstrative embodiments, the granulation may take place using any suitable granulator or granulation method including, for example, Fluidized bed Granulation, Tumbling Granulation, Disc Granulation, Pan Granulation, Drum Granulation, Mixer-Granulation, Melt Granulation, Double shaft paddle Mixer- Granulation and the like.
Example -1
1500 gr of polyhalite, 1500 gr of dolomite PSD -0.5 mm and 2% of starch were mixed in a rotating drum.
10% water were added to create a mixture and the drum was operated for 2 more minutes to yield granules.
The granules were transferred to a dryer for 30 minutes at 150 C degrees.
Results
Granules abrasion -12 mesh 6.6%
Granule strength 3.5 KgF/granule
Eco dust 0.86%
Example -2
As example 1 but PSD of polyhalite and dolomite- 2mm
Results -
Granules abrasion - 12 mesh 3.6%
Granule strength 4.1 KgF/granule
Eco dust 0.39%
Example -3
As example 2 but with 8% water
Granules abrasion - 12 mesh 17.4%
Granul e strength 3.3 KgF / granul e
Eco dust 0.89%
Example 4
As Example 2 with 1% of starch
Granules abrasion - 12 mesh 9.4%
Granule strength 3.2 KgF/granule
Eco dust 0.79%
While this invention has been described in terms of some specific examples, many modifications and variations are possible. It is therefore understood that within the scope of the appended claims, the invention may be realized otherwise than as specifically described.
Claims
1. A fertilizer granule comprising Polyhalite, Dolomite and a binder, wherein said granule comprises a single strength of at least 3.2 KgF/granule.
2. The granule of claim 1, wherein said binder is selected from the group comprising Starch, molasse, Fly Ash, calcium oxide, bitumen, Portland cement, cellulose gum, sucrose, water glass, cements, Potassium Silicate and Sodium Silicate.
3. The granule of claim 2, wherein said binder is starch.
4. The granule of claim 3, wherein said starch is in a concentration of between 0.5- 5% w/w.
5. The granule of claim 4, wherein said starch is in a concentration of between 1- 3% w/w.
6. A process for the granulation of Polyhalite and Dolomite comprising mixing Polyhalite and Dolomite in a ratio of between 1 :2 to 2: 1 in rotating drum; adding binder to said rotating drum; adding water to said rotating drum; and transferring said granules to a dryer.
7. The process of claim 6, wherein said ratio is 1 : 1
6
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21914861.6A EP4267538A1 (en) | 2020-12-28 | 2021-11-01 | Granules of polyhalite and dolomite |
| IL303589A IL303589A (en) | 2020-12-28 | 2021-11-01 | Granules of polyhalite and dolomite |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202063130896P | 2020-12-28 | 2020-12-28 | |
| US63/130,896 | 2020-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022144868A1 true WO2022144868A1 (en) | 2022-07-07 |
Family
ID=82260603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IL2021/051290 WO2022144868A1 (en) | 2020-12-28 | 2021-11-01 | Granules of polyhalite and dolomite |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4267538A1 (en) |
| IL (1) | IL303589A (en) |
| WO (1) | WO2022144868A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174804A (en) * | 1989-09-29 | 1992-12-29 | Vigoro Industries, Inc. | Fertilizer/pesticide composition and method of treating plants |
| US20060063674A1 (en) * | 2004-09-23 | 2006-03-23 | Morris Robert S Jr | Methods and apparatus for delivering time-release fertilizer |
| US20200157014A1 (en) * | 2017-06-15 | 2020-05-21 | Icl Europe Cooperatief U.A. | Compacted polyhalite and potash mixture and a process for the production thereof |
| WO2020105055A1 (en) * | 2018-11-23 | 2020-05-28 | Icl Europe Cooperatief U.A. | Compacted polyhalite and a process for the production thereof |
-
2021
- 2021-11-01 EP EP21914861.6A patent/EP4267538A1/en active Pending
- 2021-11-01 IL IL303589A patent/IL303589A/en unknown
- 2021-11-01 WO PCT/IL2021/051290 patent/WO2022144868A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174804A (en) * | 1989-09-29 | 1992-12-29 | Vigoro Industries, Inc. | Fertilizer/pesticide composition and method of treating plants |
| US20060063674A1 (en) * | 2004-09-23 | 2006-03-23 | Morris Robert S Jr | Methods and apparatus for delivering time-release fertilizer |
| US20200157014A1 (en) * | 2017-06-15 | 2020-05-21 | Icl Europe Cooperatief U.A. | Compacted polyhalite and potash mixture and a process for the production thereof |
| WO2020105055A1 (en) * | 2018-11-23 | 2020-05-28 | Icl Europe Cooperatief U.A. | Compacted polyhalite and a process for the production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| IL303589A (en) | 2023-08-01 |
| EP4267538A1 (en) | 2023-11-01 |
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