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Yara International Asa patents


Recent patent applications related to Yara International Asa. Yara International Asa is listed as an Agent/Assignee. Note: Yara International Asa may have other listings under different names/spellings. We're not affiliated with Yara International Asa, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "Y" | Yara International Asa-related inventors


Method for the manufacture of a urea-based particulate material containing elemental sulphur

This invention relates to a method for the manufacture of a homogeneous, solid, particulate, urea-based material comprising elemental sulphur. The invention further relates to a homogeneous, solid, particulate urea-based material comprising small elemental sulphur phases in a urea-based base material and formed by an accretion process. ... Yara International Asa

The use of nitrate for improving the reproductive performance of monogastric mammals

The present invention is related to the field of breeding domestic livestock, in particular to animal nutrition for domestic livestock, more in particular to nutritional supplements and additives for breeding monogastric mammals, most specifically inorganic nitrate compounds for use in a method of improving the (re)productive performance of a female monogastric mammal. The present invention provides, among others, a method of improving the (re)productive performance of a female monogastric mammal, feed supplements and feed compositions comprising inorganic nitrate compounds.. ... Yara International Asa

Fluidized bed granulation

Method and fluidized bed reactor for the production of granules, such as granules of urea or ammonium nitrate. The fluidized bed reactor comprises at least one granulation compartment with air inlets, and an air moving device downstream of the granulation compartment, e.g., downstream of at least one scrubbers. ... Yara International Asa

Setting accelerator for a tile adhesive blend

The application relates to the use of a powder comprising calcium nitrate as a setting accelerator for a tile adhesive blend, wherein nitrate powder comprising calcium nitrate, and optionally also comprising a nitrate salt different than the calcium nitrate, specifically potassium or ammonium nitrate, and having a particle size of between 0.01 mm and 1 mm is used as the setting accelerator. The application furthermore relates to a process for producing such a setting accelerator comprising, in one possible embodiment, the step of cutting or grinding prills and/or granules comprising the calcium nitrate and optionally the different nitrate salt, and in another embodiment, a spray drying process, resulting into the setting accelerator. ... Yara International Asa

Mixed metal oxide catalyst and production of nitric oxide by oxidation of ammonia

The present invention provides a catalyst for production of nitric oxide from ammonia and oxygen. The catalyst has the composition a3-xbxo9-y, wherein a and b are selected from the group mn, co, cr, fe and al, x is between 0 and 3 and y is between 0 and 6. ... Yara International Asa

Conditioning agent for a particulate fertilizer for reducing hygroscopicity and dust formation

The invention relates to a conditioning agent for reducing water absorption and dust formation of a particulate fertilizer, comprising 10 to 50 weight % of wax, 40 to 90 weight % of mineral oil and 1 to 15 weight % of a resin being mineral oil-soluble and miscible with wax and mineral oil, wherein the agent further comprises 0.1 to 1 weight % of a viscoelastic elastomer selected from the group of polyisobutylene and styrene-isoprene-styrene block copolymer which is soluble in mineral oil and has an average molecular weight of 30.000 to 5.000.000. The invention further relates to a particulate fertilizer composition, preferably a urea-ammonium sulfate (uas) fertilizer, a urea fertilizer or a calcium nitrate fertilizer, comprising a particulate substrate, preferably an hygroscopic fertilizer, preferably a nitrogen-containing fertilizer, and 0.05 to 2 weight % of said coating thereon for reducing moisture uptake and dust formation of said fertilizer.. ... Yara International Asa

Composition comprising ammonium nitrate-based particles and a gelling agent

The present invention relates to a solid, particulate, non-explosive composition comprising ammonium nitrate-based particles, in particular a fertilizer composition, of which, on the one hand, the potential misuse as a precursor for an explosive composition is limited without, on the other hand, hampering its legitimate use by farmers for food production. The solid, particulate, non-explosive composition further comprises a gelling agent which is able to form a substantially water-insoluble and non-filterable hydrogel after the solid fertilizer composition is contacted with water. ... Yara International Asa

Honeycomb monolith structure

Honeycomb monolith structure, especially for use as catalyst or support for a catalyst in selective catalytic reduction (scr) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex polygon in closest packing, wherein more than 50% of the internal angels between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell aspect ratio ll/ls is greater than 1.5. ... Yara International Asa

Method for producing anhydrous calcium nitrate powder

The invention relates to a method for producing an anhydrous powder having a calcium nitrate content of between 92 and 99.9 weight %, a water content of between 0.1 and 8 weight %; and a particle size of between 0.05 and 1.5 mm, wherein the method comprises the step of subjecting a calcium nitrate solution having a water content of between 70 and 15 weight % and a calcium nitrate content of between 30 and 85 weight % to a drying step in an industrial turbo-dryer, resulting in the anhydrous calcium nitrate powder. The invention furthermore relates to such an anhydrous calcium nitrate powder and the use of an industrial turbo-dryer to produce such anhydrous calcium nitrate powder.. ... Yara International Asa

Denitrification of saline industrial waste water

The present invention concerns a biochemical process for the denitrification of a hypersaline wastewater composition.. . ... Yara International Asa

Reduction of the amount of sulphur compounds in a sulphur compounds contaminated wastewater stream using a granular sludge treatment system

The invention relates to a process for reducing the amount of sulphur compounds in a sulphur compounds contaminated wastewater stream, using a granular sludge treatment system (10) comprising anaerobic microorganisms, wherein the process comprises the steps of adding an aqueous nitrate solution to the wastewater stream, contacting the wastewater stream with the anaerobic microorganisms, and anoxic oxidation of at least part of the sulphur compounds in the sulphur compounds contaminated wastewater stream by the anaerobic microorganisms, resulting in a sulphur compounds depleted wastewater stream. The invention furthermore relates to such a granular sludge treatment system (10).. ... Yara International Asa

Method for incorporating micronutrients in the outer shell of urea-based particles

The invention concerns a method for incorporating micronutrients in an outer shell of urea-based particles, characterized in that it comprises the steps of a) applying a liquid concentrated mineral acid with a water content of at most 25 weight % to urea-based particles having a water content of at most 2 weight %, in order to at least form a double salt layer at the outer surface of the urea-based particles such that an acidified particle grasping layer is obtained, and subsequently b) applying a solid mineral base in powder form to the urea-based particles of step a) in order to react with the grasping layer of the urea-based particles; wherein the mineral acid or the solid mineral base are the source of any one of the micronutrients and wherein the liquid concentrated mineral acid and the solid mineral base in powder form are applied in a non-equimolar ratio between 0.1 and 1 mol/mol mineral acid/mineral base. The invention furthermore concerns a particulate urea-based fertilizer, comprising urea-based particles with a water content of at most 2 weight %, comprising micronutrients in an outer shell, the urea-based particles being obtained by a method according to the invention.. ... Yara International Asa

Method for providing an inorganic coating to ammonium nitrate-based particles

The invention relates to a method for providing an inorganic coating to ammonium nitrate (an) based particles, in particular to ammonium nitrate-based particles for use as a fertilizer, as well as to an inorganic coating for ammonium nitrate-based particles per se. The method comprises the steps of: a) applying a liquid concentrated mineral acid with a water content of less than 50 weight %, to the particles, in order to at least solubilize ammonium nitrate at the outer surface of the particles such that an acidifled particle grasping layer is obtained, and b) applying a solid mineral alkaline in powder form to the particles of step a) in order to react with the grasping layer of the particles to coat the acidified particle surface; wherein the stoichiometric ratio of solid mineral alkaline in powder form to concentrated mineral acid is equal to or more than 5:1.. ... Yara International Asa








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