TH57802B - A method for the production of high nitrogen content nitrophosphate products. - Google Patents

Abstract

DC60 Method for the production of nitrogen-phosphorus or nitrogen-phosphorus-potassium fertilizers with a specific nitrogen value, 25% nitrogen by weight and 70% less ammonium nitrate by weight from molten liquid containing ammonium. Ammonium phosphate nitrates and may contain dicalcium phosphate and other constituents, solid ammonium sulfate. Will be mixed with almost anhydrous nitrogen phosphorus Whether it contains potassium salts or not Where after that The molten liquid is taken to form particles. Which often uses the Prill method The resulting product will contain Characteristics can flow freely Non-oxidizing and non-explosive Methods for the production of nitrogen-phosphorus or nitrogenous fertilizers or nitrogen-phosphorus-potassium fertilizers with specific nitrogen values having nitrogen content greater than 25% by weight and less than% ammonium nitrate. 70 by weight from molten liquids containing ammonium nitrate, ammonium phosphate and possibly dicalcium phosphate and other constituents, solid ammonium sulphate. Will be mixed with almost anhydrous nitrogen phosphorus Whether it contains potassium salts or not Where later The molten liquid is taken to form particles. Which often uses the Prill method The resulting product will contain Characteristics can flow freely It is not oxidized and does not explode.

Claims (1)

Disclaimer (all) which will not appear on the advertisement page: EDIT 21/02/2017 1. Methods for producing high N non-oxidizing NPK or high N NPK fertilizers; and It is N greater than 25% by weight, which is composed of a molten / slory liquid. Containing ammonium nitrate and monoammonium phosphate and less than 2% by weight of water. This method is unique. Before making small particles of molten liquid In the case of the production of NP fertilizers containing high N, ammonium sulfate solids, and from 0.1 to 10% by weight of the aqueous binder were added to obtain the overall composition of the molten liquid in such a way that N greater than 25% by weight and Less than 70% ammonium nitrate by weight or in the case of production of NPK fertilizers containing high N ammonium sulfate solids, from 0.1 to 10% by weight of aqueous binder. And at least one solid potassium salt was added to obtain The overall composition of the molten liquid in a manner of more than 25% N by weight and less than 70% of ammonium nitrate by weight, and then the molten liquid is particleed to form solid particles. Rights 1 having the following characteristics - water content in the molten liquid before the addition of ammonium sulfate or ammonium sulfate and potassium salt. Less than 1% by weight and - ammonium solids. The sulfate has a particle size d50 in the range of 0.10 to 0.90 mm. 3. Method of claim 1 or 2 having the following characteristics. The molten / salory liquid also contains a small amount of diammonium phosphate, dicalcium phosphate and other substances prior to adding at least one ammonium sulfate or ammonium sulfate and potassium salt 4. Method according to claim 1. Or 2 with the following characteristics: - The molten liquid contains nitrogen / P2O5 greater than 0.9 and - Calcium to phosphorus less than 1 desirable, 0.3 to 0.7. 5. Claim Method 1 or 2 with the following characteristics. this Potassium salts are KCL, K2SO4 or a mix of them 6. Method of claim 1 or 2 having the following characteristics. Ammonium sulphate particles d50 in the range of 0.40 to 0.60 mm. 7. Method according to claim 1 has the following characteristics. Water binders are MgO and / or CaO with small particles 0.2% to 1% by weight. 8. Method of claim 7 with the following characteristics. The average particle size of MgO particles is 0.2 to 3.0 mm. 9. Clause 1 or 2 has the following characteristics. The total salt content of the molten liquid was less than 52% by the desirable weight of less than 45% by weight 1 0. Claim Method. Any one of the above It has the following characteristics: The molten liquid is particleized by pryl 1 1. Granular particles of nitrogen-phosphorus or nitrogen-phosphorus-potassium fertilizers containing high nitrogen ammonium sulfate are formed. By prilling and having the ability to flow freely. - Nitrogen content between 25% and 29% by weight, with NO3-N content less than 12.2% by weight, especially less than 11.4% by weight. 45 by weight and more than 95% of citric solubility by weight and - total ammonium sulfate content of less than 30% by weight. Less than 22% by weight and - the amount of water binder is from 0.1 to 10% by weight 1. 2. High N NP fertilizer or high N non-oxidizing NPK fertilizer with N More than 25 percent by weight, which is also included. In case of high N NP fertilizers: ammonium sulfate solids and from 0.1 to 10% by weight of aqueous binder. And in the case of high N NPK fertilizers: solid ammonium sulfate, from 0.1 to 10% by weight of at least one water and potassium binder. This is prepared by one of the methods of claim 1 to 10 1. 3. High-N NPK fertilizer or high-N non-oxidizing NPK fertilizer according to claim 12, where Water bonding is 0.2 - 1% by weight of MgO and / or CaO with small particles. ---------------------- 1.Method for producing nitrogen-phosphorus or nitrogen-phosphorus potassium fertilizers with nitrogen values. It is highly non-oxidizing and nitrogen is greater than 25% by weight, where - molten / salory liquid will be produced.