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Method for the manufacture of composites/mixtures and mixtures/pellets of nitrogen/phosphorus (NP), phosphorus/potassium (PK) and nitrogen/phosphorus/potassium (NPK) fertilisers that contain trace elements and organic substances of animal origin.
Method for the manufacture of composites/mixtures and mixtures/pellets of nitrogen/phosphorus (NP), phosphorus/potassium (PK) and nitrogen/phosphorus/potassium (NPK) fertilisers that contain trace elements and organic substances of animal origin.
The invention belongs to the field of fertiliser manufacturing technology and is applied in combination with methods used for the manufacture of composites or pellets of fertilisers with the addition of organic material. In the new method, the inert material which, in many cases, is used to achieve the desired type of composites and/or mixtures of fertilisers is replaced by organic material. Unlike an inert material, the organic material contains nitrogen, phosphorus, potassium, magnesium, calcium, sulphur and trace element and, according to its percentage contribution in the composition of the new fertiliser, correspondingly lowers the quantities of the raw materials required and improves its effectiveness. With the new method it is possible to manufacture types of fertiliser composites for wide usage which however have additional trace elements and organic substance and which, by their repeated use, gradually improve the physico-mechanical characteristics of the soil and contribute to the more effective utilisation of the nutritional components of the fertilisers. By the methods described above it is possible to manufacture a broad spectrum of NP/PK and NPK types of fertiliser with trace elements and organic substance, products that combine effectively the simultaneous introduction into the soil of homogenised inorganic and organic materials with all the advantages this implies.
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