Abstract: A fertiliser comprising both sulphur and a solution of urea and ammonium nitrate in water is disclosed. Processes for making such a fertiliser are also disclosed.

Abstract: A process for preparing a micronutrient-enriched phosphate-based fertilizer is disclosed. An aqueous fertilizer mixture comprising phosphoric acid and/or phosphate rock is prepared and optionally granulated in granulator unit. The pH of the fertilizer mixture is measured and controlled such that the pH is maintained within a predefined range.

Abstract: A process for preparing a urea-sulphur fertiliser is disclosed. Urea and sulphur are supplied to a dispersion mill wherein a rotor turns within a slotted stator, thereby providing a dispersion of molten urea and molten sulphur; and the dispersion of molten urea and molten sulphur is supplied to a forming unit to provide the urea-sulphur fertiliser.

Abstract: A process for the manufacture of a urea-sulphur fertiliser composition, the process comprising providing feeds comprising elemental sulphur, urea, and optionally a surfactant, such as a multifunctional ionic surfactant; merging the feeds in order to obtain a combined feed; passing the combined feed through a mixing stage in order to obtain a mixed feed; and passing the mixed feed through a processing stage in order to obtain the urea-sulphur fertiliser composition. Compositions obtained by the process are also provided.

Abstract: The present invention discloses a urea fertilizer having a lignin compound and elemental sulphur dispersed throughout the fertilizer and having improved hardness.

Abstract: The present invention discloses the use of a lignin compound to prepare a urea fertiliser having reduced biuret content.

Abstract: A fertiliser comprising both sulphur and a solution of urea and ammonium nitrate in water is disclosed. Processes for making such a fertiliser are also disclosed.

Abstract: A process for the manufacture of a urea-sulphur fertiliser composition, the process comprising providing feeds comprising elemental sulphur, urea, and optionally a surfactant, such as a multifunctional ionic surfactant; merging the feeds in order to obtain a combined feed; passing the combined feed through a mixing stage in order to obtain a mixed feed; and passing the mixed feed through a processing stage in order to obtain the urea-sulphur fertiliser composition. Compositions obtained by the process are also provided.

Abstract: The invention provides a process for the preparation an emulsion of elemental sulphur particles, said process comprising the steps of: (a) providing a first stream comprising a liquid fertilizer and/or a liquid fertilizer precursor; (b) providing a second stream comprising liquid elemental sulphur; and (c) mixing the first stream and the second stream in a mixing device in the presence of a multifunctional ionic surfactant to form an emulsion comprising elemental sulphur particles which are coated with a layer of the multifunctional ionic surfactant and dispersed in the fertilizer and/or the fertilizer precursor, whereby a temperature is applied which maintains the elemental sulphur substantially in the liquid form in the mixing device. The invention further provides an elemental sulphur-containing fertilizer obtainable by a process according to the invention.

Abstract: A process for preparing a micronutrient-enriched phosphate-based fertiliser is disclosed. An aqueous fertiliser mixture comprising phosphoric acid and/or phosphate rock is prepared and optionally granulated in granulator unit. The pH of the fertiliser mixture is measured and controlled such that the pH is maintained within a predefined range.

Abstract: A process for preparing a urea-sulphur fertiliser is disclosed. Urea and sulphur are supplied to a dispersion mill wherein a rotor turns within a slotted stator, thereby providing a dispersion of molten urea and molten sulphur; and the dispersion of molten urea and molten sulphur is supplied to a forming unit to provide the urea-sulphur fertiliser.

Abstract: The present invention discloses the use of a lignin compound to prepare a urea fertiliser having reduced biuret content.

Abstract: The present invention discloses a urea fertiliser having a lignin compound and elemental sulphur dispersed through-out the fertiliser and having improved hardness.

Abstract: The invention provides a process for the preparation an emulsion of elemental sulphur particles, said process comprising the steps of: (a) providing a first stream comprising a liquid fertilizer and/or a liquid fertilizer precursor; (b) providing a second stream comprising liquid elemental sulphur; and (c) mixing the first stream and the second stream in a mixing device in the presence of a multifunctional ionic surfactant to form an emulsion comprising elemental sulphur particles which are coated with a layer of the multifunctional ionic surfactant and dispersed in the fertilizer and/or the fertilizer precursor, whereby a temperature is applied which maintains the elemental sulphur substantially in the liquid form in the mixing device. The invention further provides an elemental sulphur-containing fertilizer obtainable by a process according to the invention.

Abstract: According to the present invention, there is provided a process for the manufacture of sulphur-containing fertilizer compositions, said process comprising the steps of: a) providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b} bringing said slurry into contact with at least one surfactant and elemental sulphur; and c) introducing the mixture obtained in step b) into a granulator unit in order to obtain granules of the fertilizer composition, wherein the elemental sulphur is present in an amount in the range of form 1 to 25 wt. %, based on the total weight of the fertilizer composition The present invention also provides a fertilizer composition.

Abstract: A process for preparing an elemental sulphur-containing fertilizer is disclosed. The process uses a dispersion mill, wherein a rotor turns within a slotted stator, to wet mill elemental sulphur in a liquid (preferably an aqueous liquid), thereby providing a dispersion of milled elemental sulphur in the liquid. The dispersion is combined with further components to provide a mixture of elemental sulphur and further components, and the mixture is granulated in a granulator unit to provide granulated elemental sulphur-containing fertilizer.

Abstract: Process for the manufacture of sulphur-containing fertilizer compositions, comprising the steps of: a} providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b) bringing said slurry into contact with at least one anionic surfactant and elemental sulphur; c) introducing the mixture obtained in step b} into a granulator unit in order to obtain granules of the fertilizer composition, wherein the at least one phosphate-based fertilizer material is present in an amount in the range of at least 50 wt. %, the elemental sulphur is present in an amount in the range of from 1 to 25 wt. % and the anionic surfactant is present in an amount in the range of from 0.001 to 3 wt. % based on the overall weight of the fertilizer composition. The present invention also provides a fertilizer composition.

Abstract: A process for preparing an elemental sulphur-containing fertilizer is disclosed. The process uses a dispersion mill, wherein a rotor turns within a slotted stator, to wet mill elemental sulphur in a liquid (preferably an aqueous liquid), thereby providing a dispersion of milled elemental sulphur in the liquid. The dispersion is combined with further components to provide a mixture of elemental sulphur and further components, and the mixture is granulated in a granulator unit to provide granulated elemental sulphur-containing fertilizer.

Abstract: According to the present invention, there is provided a process for the manufacture of sulphur-containing fertilizer compositions, said process comprising the steps of: a) providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b} bringing said slurry into contact with at least one surfactant and elemental sulphur; and c) introducing the mixture obtained in step b) into a granulator unit in order to obtain granules of the fertilizer composition, wherein the elemental sulphur is present in an amount in the range of form 1 to 25 wt. %, based on the total weight of the fertilizer composition The present invention also provides a fertilizer composition.

Abstract: Process for the manufacture of sulphur-containing fertilizer compositions, comprising the steps of: a} providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b) bringing said slurry into contact with at least one anionic surfactant and elemental sulphur; c) introducing the mixture obtained in step b} into a granulator unit in order to obtain granules of the fertilizer composition, wherein the at least one phosphate-based fertilizer material is present in an amount in the range of at least 50 wt. %, the elemental sulphur is present in an amount in the range of from 1 to 25 wt. % and the anionic surfactant is present in an amount in the range of from 0.001 to 3 wt. % based on the overall weight of the fertilizer composition. The present invention also provides a fertilizer composition.