| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Liquid fertilizer composition and process | US46031874 | 1974-04-12 | US3917475A | 1975-11-04 | MOORE WILLIAM PERCY; AGEE JOHN HARVEY |
| An ammonium phosphate fertilizer solution having 20 to 40 percent of the P2O5 content thereof in the form of polyphosphates is prepared by reacting wet-process phosphoric acid directly with ammonia at 425*-460*F. to produce a low-nonortho ammonium phosphate melt which is then further reacted with aqueous ammonia. Desirably, heat exchange is utilized to conserve energy normally wasted in processes utilizing direct ammoniation of phosphoric acid. The resulting solution must be filtered to remove non-chelated metal impurities. The product solution contains phosphate in essentially only the stable pyrophosphate and orthophosphate forms, whereby the chelating ability of the solution is retained for long storage periods.
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| 142 | Urea-ammonium polyphosphate production | US42341973 | 1973-12-10 | US3825414A | 1974-07-23 | LEE R; MITCHELL R |
| Pugmill granulation process for the production of fertilizers containing urea and ammonium polyphosphate. Concentrated urea solution is sprayed onto recycled solids in the pugmill followed by molten ammonium polyphosphate. The melt is fed to the pugmill at a minimum of 12 inches downstream from the urea to prevent hydrolysis of the urea which results in foaming and gas evolution. The product from the pugmill is essentially anhydrous, and no further drying is required. Other fertilizer materials such as ammonium sulfate, potassium chloride, or micronutrient sources may be incorporated by adding them to the pugmill during granulation.
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| 143 | Methods for preparing mixed cation polyphosphates | US3574591D | 1968-05-15 | US3574591A | 1971-04-13 | LYONS JOHN W; RAUH GEORGE A JR; VANDERSALL HOWARD L |
| A PROCESS FOR PRODUCING SLOWLY SOLUBLE AMMONIUM-POTASSIUM-MULTIVALENT METAL CATION POLYPHOSPHATES, USEFUL AS SLOW RELEASE FERTILIZERS IS DISCLOSED WHICH PROCESS COMPRISES THERMALLY CONDENSING (1) AN INORGANIC PHOSPHATECONTAINING MATERIAL (2) A POTASSIUM-CONTAINING MATERIAL AND (3) A MULTIVALENT METAL SOURCE, IN THE PRESENCE OF A COMBINED AMMONIATING AND CONDENSING AGENT, UNDER CONTROLLED TEMPERATURE CONDITIONS TO THEREBY PRODUCE THE MIXED CATION POLYPHOSPHATES CONTAINING SPECIFIED RATIOS OF THE NITROGEN AND POTASSIUM AND SPECIFIED QUANTITIES OF MULTIVALENT CATIONS.
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| 144 | Fertilizer for cereals and process for its manufacture | US3573893D | 1968-04-15 | US3573893A | 1971-04-06 | WADSTED BENGT |
| FERTILIZER COMPOSITION AND PROCESS OF PRODUCING SAME WHEREIN PHOSPHORIC ACID IS TREATED WITH GROUND DOLOMITE, THE REACTION PRODUCT BEING FURTHER TREATED WITH A SELECTIVELY CALCINED DOLOMITE WHICH IS EITHER UNSLAKED SELECTIVELY CALCINED DOLOMITE OR SLAKED SELECTIVELY CALCINED DOLOMITE, AND THEREAFTER THE REACTION MASS THUS-OBTAINED IS TREATED WITH A PRODUCT CONTAINING AT LEAST ONE POTASSIUM SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CHOLORIDE AND POTASSIUM SULFATE.
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| 145 | Quick cure process for making superphosphates of low fluorine content | US3519387D | 1967-12-07 | US3519387A | 1970-07-07 | HENDERSON ALBERT E JR |
| 146 | Swellable fertilizer granules containing elemental sulfur with increased oxidation rates | US16842024 | 2020-04-07 | US11384034B2 | 2022-07-12 | Michael McLaughlin; Jozefien Degryse; Roslyn Baird; Rodrigo Coqui da Silva |
| Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition. | ||||||
| 147 | SWELLABLE FERTILIZER GRANULES CONTAINING ELEMENTAL SULFUR WITH INCREASED OXIDATION RATES | US16842024 | 2020-04-07 | US20200231515A1 | 2020-07-23 | Michael McLaughlin; Jozefien Degryse; Roslyn Baird; Rodrigo Coqui da Silva |
| Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition. | ||||||
| 148 | Microbial strains, compositions, and methods for increasing available phosphate for plants | US15670134 | 2017-08-07 | US10450237B2 | 2019-10-22 | David Greenshields; Shelagh Steckler; Kari Priest; Caressa Caldwell; Michael Frodyma |
| The present invention relates to a novel phosphate solubilizing strain of Penicillium bilaiae, which is a hybrid of Penicillium bilaiae ATCC 22348 and Penicillium bilaiae V08/021001, as well as compositions and methods for using the novel phosphate solubilizing strain to increase the availability of phosphorous for plant uptake from soil. | ||||||
| 149 | SOLUBLE GRANULAR FERTILIZER FOR FERTIGATION | US16328534 | 2017-08-28 | US20190194084A1 | 2019-06-27 | MOHAMED AKASHA KHALEEL |
| Disclosed herein is a fertilizer composition including a plant nutrient comprising a phosphorus compound; and an inorganic acidic compound free of phosphorus. The fertiliser composition can also comprise a fertilizer granule and a coating disposed on the fertilizer granule wherein the fertilizer granule comprises a plant nutrient; and the coating comprises sulfuric acid, nitric acid, hydrochloric acid, or a combination. The plant nutrient comprises a phosphorus compound. The fertilizer composition is useful in fertigation. | ||||||
| 150 | Urea fertilizer containing central volatilization inhibitor particles to reduce release of ammonia and processes for making same | US13071286 | 2011-03-24 | US08758474B2 | 2014-06-24 | Taylor Pursell; Arthur R. Shirley, Jr.; Keith D. Cochran; Joseph M. Miller; Timothy G. Holt; Gregory S. Peeden |
| A urea fertilizer having reduced ammonia volatilization upon application to soil including a central particle having an outer surface and comprising ammonia volatilization inhibiting compounds containing one or more of boron and iodine, and a coating of urea on the outer surface of the central particle, and further a process of making the fertilizer including the steps of: granulating ammonia volatilization inhibiting compounds containing one or more of boron and iodine, with a binder to produce volatilization inhibitor particles; screening the inhibitor particles to a preselected particle size; spraying melted urea onto the surface of the inhibitor particles to produce a coating on the inhibitor particles; granulating the coated inhibitor particles with sprayed melted urea to produce granules of urea coated central volatilization particles; and cooling the granules. | ||||||
| 151 | Fertilizer compositions and methods of making and using same | US11063026 | 2005-02-22 | US20050138978A1 | 2005-06-30 | Randolph Porubcan |
| Fertilizer compositions for plant production are described, comprised of decontaminated manure and Bacillus spores, preferably a humic acid derived from lignite and, optionally, one or more of N compounds, P compounds, K compounds, and combinations of two or more of these compounds. Preferred compositions are those wherein the ingredients are blended into an admixture resulting in a granular product. Other preferred compositions are those blended into an admixture resulting in a powdered product. Preferably, the ingredients are formed into hardened prills or pellets. Processes for production and use are also presented. | ||||||
| 152 | Nitrogen-potassium fertiliser | US10344399 | 2001-07-03 | US20050081586A1 | 2005-04-21 | Alexander Serebryakov; Vladimir Dukhanin |
| The invention relates to the production of nitrogen-potassium fertilizers and can be used for the chemical industry and for agriculture. The inventive liquid nitrogen-potassium fertilizer comprises carbamide, potassium chloride, an ammoniated component and water. Ammonium nitrate is used as the ammoniated component with the following mixing ratio of ingredients in: 20-34 mass % carbamide, 5-25 mass % potassium chloride, 25-42 mass % ammonium nitrate, the rest being water. Said liquid nitrogen-potassium fertilizer also comprises 0.3-3 mass % magnesium sulphate or 1.5-3 mass % clay. | ||||||
| 153 | Tapping tee pressure test restraining kit | US740250 | 1996-10-25 | US5723770A | 1998-03-03 | Peter F. Ertola |
| Method and apparatus, in the form a kit of parts, for securing and restraining the threaded brass adapter bushing of a standard pressure tester in its threaded engagement within the riser of a tapping tee on a gas main during pressure testing of the main, to prevent blow-off of the bushing. The assembled parts provide a swivel plate having respective connection rod apertures at its opposite ends and mounted loosely via an enlarged central aperture on the nipple of the tester immediately adjacent to the adapter bushing which is threaded onto, and holds the swivel plate on the nipple; an elongated angular saddle plate placed against the gas main below the tapping tee and having diagonally disposed connection rod apertures corresponding to those in the swivel plate; and a pair of threaded connection rods passed through the respective corresponding pairs of apertures and tightly connecting the swivel plate and saddle plate. The angular positioned swivel plate and diagonal disposition of the saddle plate apertures causes the rods to bypass the horizontal branch of the tapping tee. The swivel plate is pressed into engagement with the tester bushing, thereby preventing blowoff. In an alternative embodiment, a wire rope is substituted for the pair of connection rods. | ||||||
| 154 | Sulfur-based fertilizer and process for production thereof | US398532 | 1995-03-06 | US5571303A | 1996-11-05 | Stewart G. Bexton |
| A particulate sulfur-based fertilizer comprising a uniform dispersion of sulfur and at least one member selected from the group consisting of ammonium sulfate, ammonium phosphate and mixtures thereof, the sulfur having an average particle size of less than about 100 .mu.m. A process for producing a sulfur-based fertilizer is also described. The process comprises: (i) providing a first stream comprising ammonia; (ii) providing a second stream comprising a least one member selected from the group consisting of sulfuric acid, phosphoric acid and mixtures thereof; (iii) providing a third stream comprising an aqueous liquid; (iv) mixing the first stream, the second stream and the third stream to provide a liquid reaction mixture; (v) feeding the liquid reaction mixture to a mixer; (vi) feeding a fourth stream comprising molten sulfur to the mixer; (vii) maintaining a pressure drop across the mixer of at least about 200 kPa to form a homogenized melt of sulfur-based fertilizer; and (viii) solidifying the homogenized melt to produce the particulate sulfur-based fertilizer. | ||||||
| 155 | Plant food and method for its use | US823857 | 1986-01-29 | US4976767A | 1990-12-11 | Alan M. Kinnersley; Wayne E. Henderson |
| A plant food with superior growth promoting properties that comprises a mixture of steepwater and other sources of nitrogen, phosphorus, and potassium. The optimum proportion of steepwater and other materials in the plant food is determined by analysis of growth response using the technique of response surface methodology. | ||||||
| 156 | Nutritional product, especially for animals and soils, and process for the manufacture thereof | US14232 | 1987-02-12 | US4851242A | 1989-07-25 | Pierre G. Dubois; Francois M. Lognone; Francois J. Pape |
| A nutritional product for animals and for soils consists of aggregates of organic sea limestones of recent formation, part of which takes the form of at least one of the mono-, di- and tri-calcium phosphates resulting from the action of phosphoric acid on the limestones, the product containing a maximum of 20% phosphorus by weight. The manufacturing process involves reacting phosphoric acid with the limestones in the presence of water, at least part of which is sea water, to form the phosphate around the shell core, and extracting under reduced pressure the noxious gaseous products resulting from this reaction. | ||||||
| 157 | Process for the separation of heavy metal compounds from phosphoric acid | US481281 | 1983-04-01 | US4479924A | 1984-10-30 | Helmold von Plessen; Reinhard Gradl; G/u/ nther Schimmel |
| A process for the separation of heavy metal components, especially of compounds of cadmium, mercury and lead, from crude phosphoric acid obtained according to the Odda process, which comprises adjusting this crude phosphoric acid with ammonia to a pH of from 0.5 to 1.5, contacting it subsequently with a diorganyl-dithiophosphorus compound and an adsorbent, and then separating the acid from the absorbent containing the heavy metal impurities. | ||||||
| 158 | Method of defluorinating phosphates | US371333 | 1982-04-23 | US4405575A | 1983-09-20 | Albert E. Henderson |
| This invention comprises a method for removing fluorine from natural phosphates, superphosphate materials and wet process phosphoric acids starting materials comprising(a) admixing rock phosphate having a fluorine content above that desired with an acid mixture within the range of rock:acid mixture of about 0.8 to 1 and 1:1.4 by weight;(b) said acid mixture being substantially concentrated phosphoric acid and concentrated sulfuric acid in a range of phosphoric:sulfuric of about 1:1 to 5:1 by weight;(c) said admixing being at a temperature in the range of 215.degree. to 265.degree. F. while adding water in an amount of up to about 12% by weight of the total mixture and then subjecting the above charge;(d) in a first heating stage adding (1) recycle in an amount substantially of recycle to charge of 1:1 to 10:1 by weight (2) and water while heating to a temperature in the range of 300.degree. F. to 400.degree. F. for a period of time up to about 6 minutes;(e) and in a second heating stage, maintaining the temperature in the range of 400.degree. to 600.degree. F. for a period of time of up to about 6 mimutes, and then;(f) quickly cooling the resulting product above to a temperature range below about 300.degree. F. to 200.degree. F. while neutralizing to about 1 to 6% free acid and with addition of at least sufficient amount of water to have water of hydration of substantially 2 to 9% by weight in the final product;(g) and, crushing the above resulting product to a desired granular size and separating and returning smaller fine particles as recycle. | ||||||
| 159 | Treatment of phosphate rock on soil in situ with sulfuric acid | US720499 | 1976-09-03 | US4231780A | 1980-11-04 | Dwight D. Collins |
| A layer of bare, untreated phosphate rock granules is applied to the soil, and concentrated sulfuric acid is supplied thereto. The sulfuric acid is sufficiently concentrated so as to be containable by cold-rolled carbon steel, and sufficiently viscous to cling to the granules to react therewith. Sulfuric acid in excess of the amount needed for reaction with the phosphate rock can be added to correct alkaline conditions in the underlying soil. The reaction of sulfuric acid with the phosphate rock produces substantial quantities of available phosphate and gypsum. | ||||||
| 160 | Method of making granular triple superphosphate fertilizer | US43325374 | 1974-01-14 | US3868243A | 1975-02-25 | MACDONALD ROBERT A |
| Disclosed is a method of making granular superphosphate by reacting comminuted phosphate rock with phosphoric acid. The process involves two reaction steps. A predetermined amount of phosphoric acid is reacted with phosphate rock in quantities to produce a flowable fluid excess acid slurry which will remain liquid and fluid at the temperature of the reaction. The slurry is then injected into an agitating mixer containing comminuted phosphate rock. The ratio of slurry to phosphate rock in the mixer is controlled to complete the reaction between the phosphate rock and phosphoric acid and produce a granulated superphosphate product having a moisture content of about 5% or less.
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