WO2020257901A1 - Composition fertilisante à base de phosphogypse - Google Patents

Composition fertilisante à base de phosphogypse Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
phosphogypsum
sources
composition
fertilizer composition
composition containing
Prior art date
Application number
PCT/BR2020/050224
Other languages
English (en)
Portuguese (pt)
Inventor
Manoel DUARTE FERREIRA
Original Assignee
Sulgesso Indústria E Comércio S.A.
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 Sulgesso Indústria E Comércio S.A. filed Critical Sulgesso Indústria E Comércio S.A.
Publication of WO2020257901A1 publication Critical patent/WO2020257901A1/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
    • 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

Le présent abrégé d'invention concerne une composition fertilisante granulaire à base de phosphogypse (granule anguleux, non sphérique), pouvant être additionnée d'un ou de plusieurs nutriments par voie liquide, dans la masse ou en surface, comprenant entre 30,0 et 95,0% de sulfate de calcium di-hydraté, avec une humidité égale ou inférieure à 3,0%, les autres 5% à 70% provenant d'autres matières premières.
PCT/BR2020/050224 2019-06-27 2020-06-24 Composition fertilisante à base de phosphogypse WO2020257901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102019013348A BR102019013348A2 (pt) 2019-06-27 2019-06-27 composição fertilizante à base de fosfogesso
BR102019013348-1 2019-06-27

Publications (1)

Publication Number Publication Date
WO2020257901A1 true WO2020257901A1 (fr) 2020-12-30

Family

ID=69191472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2020/050224 WO2020257901A1 (fr) 2019-06-27 2020-06-24 Composition fertilisante à base de phosphogypse

Country Status (2)

Country Link
BR (1) BR102019013348A2 (fr)
WO (1) WO2020257901A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1109037A (zh) * 1994-03-25 1995-09-27 河南省正阳县磷肥厂 中量元素肥及其制造方法
US5597399A (en) * 1993-04-30 1997-01-28 Basu; Dibyendu Soil enhancing compound and method for producing same
CA2519961A1 (fr) * 2003-03-20 2004-10-07 G.B. Technologies, Llc Compositions a base de sulfate de calcium et procedes de fabrication de celles-ci
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (zh) * 1994-03-25 1995-09-27 河南省正阳县磷肥厂 中量元素肥及其制造方法
CA2519961A1 (fr) * 2003-03-20 2004-10-07 G.B. Technologies, Llc Compositions a base de sulfate de calcium et procedes de fabrication de celles-ci
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

Also Published As

Publication number Publication date
BR102019013348A2 (pt) 2020-01-14

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