WO2020257901A1 - Fertilizer composition containing phosphogypsum - Google Patents
Fertilizer composition containing phosphogypsum Download PDFInfo
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- WO2020257901A1 WO2020257901A1 PCT/BR2020/050224 BR2020050224W WO2020257901A1 WO 2020257901 A1 WO2020257901 A1 WO 2020257901A1 BR 2020050224 W BR2020050224 W BR 2020050224W WO 2020257901 A1 WO2020257901 A1 WO 2020257901A1
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- WIPO (PCT)
- Prior art keywords
- phosphogypsum
- sources
- composition
- fertilizer composition
- composition containing
- Prior art date
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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
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
Definitions
- the present invention patent describes a fertilizer composition based on phosphogypsum, granulated (angular, non-spherical granule), and one or more nutrients can be added in liquid, in the mass or on the surface.
- Phosphogypsum (CaS04.2H20) is the residue generated during the phosphoric acid production process that has apatite phosphate rock as its main raw material, considered as an economically viable phosphorus source for the production of phosphate fertilizers and phosphates for other purposes 1 .
- Phosphogypsum has been used in the civil construction industry as a load on building blocks, for example, and in the fertilizer industry, as a coating for phosphate fertilizers or undergoing a calcination step that transforms, by thermal action, the composition dihydrate in hemihydrate.
- AU1851299 describes a method for the production of granular fertilizers containing phosphate or sulphate (monoammonium phosphate (MAP), diamonium phosphate (DAP), single superphosphate (SSP), double superphosphate (DSP), triple superphosphate (TSP) ), ammonia sulphate (SoA), potassium sulphate (SoP) or Langbeinite (K-Mag)) coated with sulfur embedded in the coating, the coating system or method being characterized by the use of calcium oxide (CaO), hydroxide calcium (Ca (OH) 2) or calcium sulfate (CaS04 as a coating additive) which can be monohydrate or dihydrate.
- MAP monoammonium phosphate
- DAP diamonium phosphate
- SSP single superphosphate
- DSP double superphosphate
- TSP triple superphosphate
- SoA ammonia sulphate
- SoP potassium sulphate
- K-Mag Langbeinite
- CN101723731 describes a long-acting compound fertilizer containing between 3-50 parts by weight of phosphogypsum, 20-50 parts by weight of long-acting nitrogen fertilizer, between 5-35 parts by weight of phosphate fertilizer, between 5 -40 parts by weight of potassium fertilizer and 1-5 parts by weight of a trace element.
- Document RU2345828 describes a method for the preparation of granulated phosphogypsum which includes the mixture of the phosphogypsum with the binder and the mixture, heat treatment of the granulated material at 170 to 200 ° C and its further crushing.
- Document W02004085333 describes a method of producing a powdered calcium sulfate hemihydrate compound (CaS04.1 ⁇ 2H20) including the formation of calcium sulfate dihydrate in a briquette under high pressure, calcining the briquette to transform calcium sulfate dihydrate in calcium sulfate hemihydrate type alpha, drying of the briquette hemihydrate of calcium sulfate type alpha and, optionally, briquette grinding.
- CaS04.1 ⁇ 2H20 powdered calcium sulfate hemihydrate compound
- PI 9504937-1 describes the chemical conversion of calcium sulfate, contained in phosphogypsum, which is the residue of the manufacture of phosphoric acid, by the reaction of sulfuric acid with the phosphate rock. The process is based on the chemical reaction of calcium sulfate, the main constituent of phosphogypsum, with sodium hydroxide, obtaining calcium hydroxide, considered the main product and sodium sulfate, as a by-product.
- Fertilizers of the prior art are conventionally granulated and can be coated with phosphogypsum, but necessarily presenting the addition of a binding agent necessary for the chemical-physical transformations of granulation operations.
- the proposal of the present invention patent is a phosphogypsum-based fertilizer composition, associated or not with nutrient sources added in liquid, mass or surface and / or additives, providing a mineral, organomineral or organic.
- the invention describes a phosphogypsum-based fertilizer composition in the form of an angular (non-spherical) granule,
- the invention describes a granular fertilizer composition based on phosphogypsum with a high concentration of nutrients, reducing the amount applied per cultivation area and providing cost reduction, as well as increased productivity in the field.
- the invention describes a phosphogypsum-based fertilizer composition that can be classified as mineral, organomineral or organic fertilizer, depending on the associated additives. DESCRIPTION
- composition of the phosphogypsum-based fertilizer, object of the present invention patent comprises between 30.0 to 95.0% of calcium sulfate dihydrate, with humidity equal to or less than 3.0% the other 5 % to 70% come from other raw materials, such as: carbonates, oxides, potassium sources, phosphate sources, sources nitrogenous sources of micronutrients.
- nutrient sources can be added in liquid, mass or surface, including carbonates or oxides of calcium, magnesium or calcium and magnesium, phosphate fertilizers, nitrogen fertilizers, potassium fertilizers, organic fertilizers, micronutrients, alone or in association.
- additives with or without anti-dusting characteristics can be added, associated with the nutrient sources or the phosphogypsum composition.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention abstract describes a granulated fertilizer composition containing phosphogypsum (non-spherical, angular granules), with the optional addition of one or more nutrients in liquid form to the mass or surface, said composition comprising 30-95% calcium sulphate dihydrate, with a moisture content equal to or below 3%, the remaining 5-70% originating from other raw materials.
Description
COMPOSIÇÃO FERTILIZANTE À BASE DE FOSFOGESSO CAMPO DA INVENÇÃO FERTILIZING COMPOSITION BASED ON Phosphogypsum FIELD OF THE INVENTION
[001 ] A presente patente de invenção descreve uma composição fertilizante à base de fosfogesso, granulado (grânulo anguloso, não-esférico), podendo ser adicionado um ou mais nutrientes em via líquida, na massa ou em superfície. [001] The present invention patent describes a fertilizer composition based on phosphogypsum, granulated (angular, non-spherical granule), and one or more nutrients can be added in liquid, in the mass or on the surface.
ANTECEDENTES DA INVENÇÃO BACKGROUND OF THE INVENTION
[002] O fosfogesso (CaS04.2H20) é o resíduo gerado durante o processo de produção de ácido fosfórico que possui como matéria-prima principal a rocha fosfática apatita, considerados como fonte de fósforo economicamente viável para a produção de fertilizantes fosfatados e fosfatos para outros fins1. [002] Phosphogypsum (CaS04.2H20) is the residue generated during the phosphoric acid production process that has apatite phosphate rock as its main raw material, considered as an economically viable phosphorus source for the production of phosphate fertilizers and phosphates for other purposes 1 .
[003] Para cada tonelada de ácido fosfórico produzido, são gerados cerca de 4,5 a 5,5 toneladas de fosfogesso. Este subproduto, pouco utilizado na indústria, causa severos impactos ambientais2. [003] For each ton of phosphoric acid produced, about 4.5 to 5.5 tons of phosphogypsum are generated. This by-product, little used in industry, causes severe environmental impacts 2 .
[004] O fosfogesso vem sendo utilizado na indústria da construção civil como carga em blocos de construção, por exemplo, e na indústria de fertilizantes, como revestimento de fertilizantes fosfatados ou passando por uma etapa de calcinação que transforma, por ação térmica, a composição di-hidratada em hemi-hidratada. [004] Phosphogypsum has been used in the civil construction industry as a load on building blocks, for example, and in the fertilizer industry, as a coating for phosphate fertilizers or undergoing a calcination step that transforms, by thermal action, the composition dihydrate in hemihydrate.
[005] O documento AU1851299 descreve um método para a produção de adubos granulares contendo fosfato ou sulfato (fosfato de monoamônio (MAP), fosfato de diamônio (DAP), superfosfato simples (SSP), superfosfato duplo (DSP), superfosfato triplo (TSP), sulfato de amoníaco (SoA), sulfato de potássio (SoP) ou Langbeinite (K-Mag)) revestido com enxofre incorporado no revestimento, sendo o referido sistema ou método de revestimento caracterizado pelo uso de óxido de cálcio (CaO), hidróxido de cálcio (Ca(OH)2) ou sulfato de cálcio
(CaS04 como aditivo de revestimento) que pode ser mono-hidratado ou di-hidratado. [005] AU1851299 describes a method for the production of granular fertilizers containing phosphate or sulphate (monoammonium phosphate (MAP), diamonium phosphate (DAP), single superphosphate (SSP), double superphosphate (DSP), triple superphosphate (TSP) ), ammonia sulphate (SoA), potassium sulphate (SoP) or Langbeinite (K-Mag)) coated with sulfur embedded in the coating, the coating system or method being characterized by the use of calcium oxide (CaO), hydroxide calcium (Ca (OH) 2) or calcium sulfate (CaS04 as a coating additive) which can be monohydrate or dihydrate.
[006] O documento CN101723731 descreve um fertilizante composto de ação prolongada contendo entre 3-50 partes em peso de fosfogesso, 20-50 partes em peso de fertilizante nitrogenado de ação prolongada, entre 5-35 partes em peso de fertilizante fosfatado, entre 5-40 partes em peso de fertilizante potássico e 1-5 partes em peso de um elemento de traço. [006] CN101723731 describes a long-acting compound fertilizer containing between 3-50 parts by weight of phosphogypsum, 20-50 parts by weight of long-acting nitrogen fertilizer, between 5-35 parts by weight of phosphate fertilizer, between 5 -40 parts by weight of potassium fertilizer and 1-5 parts by weight of a trace element.
[007] O documento RU2345828 descreve um método para a preparação de fosfogesso granulado que inclui a mistura do fosfogesso com o aglutinante e a mistura, tratamento térmico do material granulado à temperatura de 170 a 200°C e seu esmagamento adicional. [007] Document RU2345828 describes a method for the preparation of granulated phosphogypsum which includes the mixture of the phosphogypsum with the binder and the mixture, heat treatment of the granulated material at 170 to 200 ° C and its further crushing.
[008] O documento W02004085333 descreve um método de produção de um composto hemi-hidratado de sulfato de cálcio em pó (CaS04.½H20) incluindo a formação de sulfato de cálcio di-hidratado em um briquete sob alta pressão, calcinando o briquete para transformar o sulfato de cálcio di-hidratado em hemi-hidratado de sulfato de cálcio tipo alfa, secagem do briquete hemi-hidratado de sulfato de cálcio tipo alfa e, opcionalmente, moagem do briquete. [008] Document W02004085333 describes a method of producing a powdered calcium sulfate hemihydrate compound (CaS04.½H20) including the formation of calcium sulfate dihydrate in a briquette under high pressure, calcining the briquette to transform calcium sulfate dihydrate in calcium sulfate hemihydrate type alpha, drying of the briquette hemihydrate of calcium sulfate type alpha and, optionally, briquette grinding.
[009] O documento PI 9504937-1 descreve a conversão química do sulfato de cálcio, contido no fosfogesso, que é resíduo da fabricação do ácido fosfórico, pela reação do ácido sulfúrico com a rocha fosfática. O processo baseia-se na reação química do sulfato de cálcio, constituinte principal do fosfogesso, com hidróxido de sódio, obtendo-se hidróxido de cálcio, considerado produto principal e sulfato de sódio, como subproduto. [009] PI 9504937-1 describes the chemical conversion of calcium sulfate, contained in phosphogypsum, which is the residue of the manufacture of phosphoric acid, by the reaction of sulfuric acid with the phosphate rock. The process is based on the chemical reaction of calcium sulfate, the main constituent of phosphogypsum, with sodium hydroxide, obtaining calcium hydroxide, considered the main product and sodium sulfate, as a by-product.
PROBLEMA DA TÉCNICA
[010] Os fertilizantes do estado da técnica convencionalmente são granulados, podendo ser revestidos com fosfogesso, mas necessariamente apresentando a adição de um agente ligante necessário para as transformações químico-físicas das operações de granulação. TECHNICAL PROBLEM [010] Fertilizers of the prior art are conventionally granulated and can be coated with phosphogypsum, but necessarily presenting the addition of a binding agent necessary for the chemical-physical transformations of granulation operations.
SOLUÇÃO PROPOSTA PROPOSED SOLUTION
[01 1 ] A proposta da presente patente de invenção é uma composição fertilizante à base de fosfogesso, associado ou não com fontes de nutriente adicionados em via líquida, na massa ou em superfície e/ou aditivos, provendo uma composição fertilizante mineral, organomineral ou orgânica. [01 1] The proposal of the present invention patent is a phosphogypsum-based fertilizer composition, associated or not with nutrient sources added in liquid, mass or surface and / or additives, providing a mineral, organomineral or organic.
SUMÁRIO SUMMARY
[012] A invenção descreve uma composição fertilizante à base de fosfogesso sob a forma de um grânulo anguloso (não- esférico), [012] The invention describes a phosphogypsum-based fertilizer composition in the form of an angular (non-spherical) granule,
[013] A invenção descreve uma composição fertilizante granulado à base de fosfogesso com alta concentração de nutrientes, reduzindo a quantidade aplicada por área de cultivo e proporcionando redução de custos, bem como aumento da produtividade no campo. [013] The invention describes a granular fertilizer composition based on phosphogypsum with a high concentration of nutrients, reducing the amount applied per cultivation area and providing cost reduction, as well as increased productivity in the field.
[014] A invenção descreve uma composição fertilizante à base de fosfogesso que pode ser classificada como fertilizante mineral, organomineral ou orgânico, conforme os aditivos associados. DESCRIÇÃO [014] The invention describes a phosphogypsum-based fertilizer composition that can be classified as mineral, organomineral or organic fertilizer, depending on the associated additives. DESCRIPTION
[015] A composição do fertilizante à base de fosfogesso, objeto da presente patente de invenção, compreende entre 30,0 a 95,0% de sulfato de cálcio di-hidratado, com umidade igual ou menor que 3,0% os outros 5% a 70% são oriundos de outras matérias primas, como: carbonatos, óxidos, fontes potássicas, fontes fosfatadas, fontes
nitrogenadas, fontes de micronutrientes. [015] The composition of the phosphogypsum-based fertilizer, object of the present invention patent, comprises between 30.0 to 95.0% of calcium sulfate dihydrate, with humidity equal to or less than 3.0% the other 5 % to 70% come from other raw materials, such as: carbonates, oxides, potassium sources, phosphate sources, sources nitrogenous sources of micronutrients.
[016] Opcionalmente, podem ser adicionadas fontes de nutrientes em via líquida, na massa ou em superfície, incluindo carbonatos ou óxidos de cálcio, magnésio ou cálcio e magnésio, fertilizantes fosfatados, fertilizantes nitrogenados, fertilizantes potássicos, fertilizantes orgânicos, micronutrientes, isoladamente ou em associação. [016] Optionally, nutrient sources can be added in liquid, mass or surface, including carbonates or oxides of calcium, magnesium or calcium and magnesium, phosphate fertilizers, nitrogen fertilizers, potassium fertilizers, organic fertilizers, micronutrients, alone or in association.
[017] Opcionalmente, podem ser adicionados aditivos contendo ou não características anti-dusting, associados com as fontes de nutriente ou à composição de fosfogesso. [017] Optionally, additives with or without anti-dusting characteristics can be added, associated with the nutrient sources or the phosphogypsum composition.
REFERÊNCIAS: REFERENCES:
[018] 1- (AQUINO, P. E. A produção de ácido fosfórico e a geração de fosfogesso. In: Desafios Tecnológicos para o Reaproveitamento do Fosfogesso, 2005. Belo Horizonte. Anais eletrónicos. Belo Horizonte: UFMG, 2005). [018] 1- (AQUINO, P. E. The production of phosphoric acid and the generation of phosphogypsum. In: Technological Challenges for the Reuse of Phosphogypsum, 2005. Belo Horizonte. Electronic Proceedings. Belo Horizonte: UFMG, 2005).
[019] 2- (CHANG, W.F.; MANTELL, M.l. Engineering properties and construction applications of phosphogypsum. Florida Institute of Phosphate Research. Coral Gables: Florida, 201 p. ISBN 87024-28-4. 1990).
[019] 2- (CHANG, W.F .; MANTELL, M.l. Engineering properties and construction applications of phosphogypsum. Florida Institute of Phosphate Research. Coral Gables: Florida, 201 p. ISBN 87024-28-4. 1990).
Claims
REIVINDICAÇÕES: CLAIMS:
1- COMPOSIÇÃO FERTILIZANTE À BASE DE FOSFOGESSO, caracterizada por estar associada ou não com fontes de nutriente adicionados em via líquida, na massa ou em superfície e/ou aditivos, sob a forma de um grânulo anguloso (não-esférico) com alta concentração de nutrientes. 1- PHOSPHOGESS-BASED FERTILIZING COMPOSITION, characterized by being associated or not with nutrient sources added in liquid, in the mass or on the surface and / or additives, in the form of an angular (non-spherical) granule with a high concentration of nutrients.
2- COMPOSIÇÃO de acordo com a reivindicação 1 e caracterizado pela composição compreender entre 30,0 a 95,0% de sulfato de cálcio di-hidratado, com umidade igual ou menor que 3,0%, sendo que os outros 5% a 70% são oriundos de outras matérias- primas, tais como carbonatos, óxidos, fontes potássicas, fontes fosfatadas, fontes nitrogenadas, fontes de micronutrientes.
2- COMPOSITION according to claim 1 and characterized by the composition comprising between 30.0 to 95.0% of calcium sulfate dihydrate, with humidity equal to or less than 3.0%, with the other 5% to 70% % come from other raw materials, such as carbonates, oxides, potassium sources, phosphate sources, nitrogen sources, micronutrient sources.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102019013348-1 | 2019-06-27 | ||
| BR102019013348A BR102019013348A2 (en) | 2019-06-27 | 2019-06-27 | phosphogypsum-based fertilizer composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020257901A1 true WO2020257901A1 (en) | 2020-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2020/050224 WO2020257901A1 (en) | 2019-06-27 | 2020-06-24 | Fertilizer composition containing phosphogypsum |
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| BR (1) | BR102019013348A2 (en) |
| WO (1) | WO2020257901A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109037A (en) * | 1994-03-25 | 1995-09-27 | 河南省正阳县磷肥厂 | Moderate-element fertilizer and its manufacture |
| US5597399A (en) * | 1993-04-30 | 1997-01-28 | Basu; Dibyendu | Soil enhancing compound and method for producing same |
| CA2519961A1 (en) * | 2003-03-20 | 2004-10-07 | G.B. Technologies, Llc | Calcium sulphate-based compositions and methods of making same |
| US20060148646A1 (en) * | 2004-09-23 | 2006-07-06 | Taylor Pursell | Controlled release fertilizers containing calcium sulfate and processes for making same |
| AU2017203167A1 (en) * | 2016-05-13 | 2017-11-30 | Midland Distributors Limited | Granular fertilizer and soil conditioning formulations |
-
2019
- 2019-06-27 BR BR102019013348A patent/BR102019013348A2/en not_active Application Discontinuation
-
2020
- 2020-06-24 WO PCT/BR2020/050224 patent/WO2020257901A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597399A (en) * | 1993-04-30 | 1997-01-28 | Basu; Dibyendu | Soil enhancing compound and method for producing same |
| CN1109037A (en) * | 1994-03-25 | 1995-09-27 | 河南省正阳县磷肥厂 | Moderate-element fertilizer and its manufacture |
| CA2519961A1 (en) * | 2003-03-20 | 2004-10-07 | G.B. Technologies, Llc | Calcium sulphate-based compositions and methods of making same |
| US20060148646A1 (en) * | 2004-09-23 | 2006-07-06 | Taylor Pursell | Controlled release fertilizers containing calcium sulfate and processes for making same |
| AU2017203167A1 (en) * | 2016-05-13 | 2017-11-30 | Midland Distributors Limited | Granular fertilizer and soil conditioning formulations |
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| Publication number | Publication date |
|---|---|
| BR102019013348A2 (en) | 2020-01-14 |
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