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| Number | Title | Issue Date |
| 7828871 | Soluble fertilizer compositions comprising calcium and/or magnesium phosphates The present invention provides fertilizer compositions comprising calcium and magnesium phosphates together with alkali metal double phosphates, and process for their preparation. The solid composition is freely flowing and well soluble. ... | 11/09/2010 |
| 7128880 | Organic recycling with a pipe-cross or tubular reactor The invention is directed to a process for enhancing the plant nutrient value of relatively low analysis organic waste material (e.g. sewage sludge) involves treating the waste material with an acid and base in a pipe-cross reactor or tubular to form a melt; sprayin... | 10/31/2006 |
| 6852142 | Organic-based fertilizer The subject invention provides methods for producing homogenous organic base fertilizer for plant nutrition and soil fertility. Also provided by the subject invention are value added fertilizer products for plant nutrition and soil fertility and concentrated liquid ... | 02/08/2005 |
| 6615539 | Water-retaining support for plants and plant body-growing water-retaining material A water-retaining support for plants comprising a hydrogel-forming polymer (A) having a calcium ion absorption of 0-100 mg per 1 g of the dry weight thereof, having a chlorine ion content of 0.07-7 mmol per 1 g of the dry weight thereof and having a water... | 09/09/2003 |
| 6544313 | Sulfur-containing fertilizer composition and method for preparing same A fertilizer composition that includes a plurality of particles in which the particles feature a plurality of sulfur platelets embedded within a fertilizer portion, and a method for preparing this composition in which fertilizer-containing particles are s... | 04/08/2003 |
| 6506805 | Magnesium ammonium phosphate hexahydrate and monohydrate slurries A magnesium ammonium phosphate slurry and method of producing magnesium ammonium phosphate slurries. The method provides for obtaining a magnesium hydroxide supply having a small particle size of about 2 microns. Aqua ammonia and phosphoric acid are seque... | 01/14/2003 |
| 6476082 | Magnesium ammonium phosphate hexahydrate slurry A magnesium ammonium phosphate slurry and method of producing magnesium ammonium phosphate slurries. The method provides for obtaining a magnesium hydroxide supply having a small particle size of about 1 to 2 microns. Aqua ammonia and phosphoric acid are ... | 11/05/2002 |
| 6344066 | Process for the preparation of fertilizers and sulfur compounds A method for the combined production of (I) a fertilizer selected from a group consisting of ammonium nitrate, ammonium phosphates or a combination thereof through an indirect neutralization of ammonia with an acid selected form a group consisting of nitr... | 02/05/2002 |
| 6312492 | Beneficiation of animal manure A process for treating animal manure, particularly poultry feces, with concentrated sulfuric acid (about 93 to 95% H2 SO4). The product of the process can be used for treating agricultural soils.... | 11/06/2001 |
| 5997910 | Plant fertilizer compositions containing phosphonate and phosphate salts and derivatives thereof A fertilizer composition for plants containing phosphonate and phosphate slats, and derivatives thereof is disclosed. The composition provides a single product which may be employed to stimulate the growth response in plants.... | 12/07/1999 |
| 5997602 | Aqueous fertilzer suspension containing at least phosphate ions and calcium or magnesium ions and a use of the suspension The invention relates to a stable, concentrated aqueous fertilizer suspension, which can be diluted with water to provide a working solution. The suspension contains 10 to 60% by weight of water and 40 to 90% by weight of a plant nutrient composition base... | 12/07/1999 |
| 5965117 | Water-bouyant particulate materials containing micronutrients for phytoplankton Water-buoyant compositions comprising a source of micronutrients for photosynthetic phytoplankton growth are useful for stimulating photosynthetic phytoplankton growth in ocean areas devoid of such growth when deployed on ocean surfaces as floating partic... | 10/12/1999 |
| 5851260 | Suspension fertilizer suitable for irrigation fertilization, and a process for its preparation The invention relates to a stable aqueous fertilizer suspension suitable for drip irrigation, which suspension contains 5-55% by weight water and 45-95% by weight of one or several plant-nutrient containing substances, of which at least one contains water... | 12/22/1998 |
| 5849060 | Controlled release fertilizer and preparations thereof The present invention relates to a controlled release fertilizer having water-soluble fertilizers as nucleus and limited-soluble plant nutrient compounds as coating layers, characterized in that more than two coating layers of limited-soluble compounds ar... | 12/15/1998 |
| 5800837 | Plant fertilizer compositions containing phosphonate and phosphate salts and derivatives thereof A fertilizer composition for plants containing phosphonate and phosphate slats, and derivatives thereof is disclosed. The composition provides a single product which may be employed to stimulate the growth response in plants.... | 09/01/1998 |
| 5451242 | Active synthetic soil A synthetic soil/fertilizer for horticultural application having all the agronutrients essential for plant growth is disclosed. The soil comprises a synthetic apatite fertilizer having sulfur, magnesium and micronutrients dispersed in a calcium phosphate ... | 09/19/1995 |
| 5447637 | Process for the disposal and recovery of phossy water Phossy water is a toxic liquid waste that is generated when elemental phosphorus is manufactured, stored, or processed into phosphorus-containing products. Elemental phosphorus may be present as a solution, as colloidal particles, and as settleable partic... | 09/05/1995 |
| 5433766 | Slow-release fertilizer A synthetic apatite containing agronutrients and a method for making the apatite are disclosed. The apatite comprises crystalline calcium phosphate having agronutrients dispersed in the crystalline structure. The agronutrients can comprise potassium, magn... | 07/18/1995 |
| 5158594 | Granulated nitrogen-phosphorus-potassium-sulfur fertilizer from waste gypsum slurry Process for converting phospho-gypsum waste product from the wet process of manufacturing phosphoric acid from phosphate rock by ammoniating said product at a pH of 6.5 or less and adjusting the phosphorus and potassium values of said ammoniated product b... | 10/27/1992 |
| 5152821 | Addition of supplemental macro & micro nutrients to granular phosphatic fertilizers A granular fertilizer is prepared by coating particles of a base fertilizer, selected from orthophosphates of calcium, ammonium and potassium and mixtures thereof, with: (a) a first layer comprising 1 to 5% (by weight of the total composition) of water or... | 10/06/1992 |
| 5102446 | No-till liquid herbicide and fertilizer suspension A liquid fertilizer composition suitable for no-till farming contains a stabilizing amount of an admixture of calcium chloride and ammonium polyphosphate or similar nitrogen/phosphorous source in addition to a herbicide. As an improvement over clay suspen... | 04/07/1992 |
| 5028252 | Method of and composition for the fertilization, detoxification and deacidification of soil A fertilizer composition and method for the detoxification and deacidification of soil threatened by acidic deposits which comprises at least one alkali-reactive component, selected from the group which consists of calcium, magnesium, potassium, sodium, a... | 07/02/1991 |
| 4883530 | Use of ammonium syngenite as a slow-acting nitrogen fertilizer Soils are fertilized by a method in which ammonium syngenite (NH4)2 SO4.CaSO.sub.4.H.sub.2 O or a mixture of finely divided ammonium sulfate, calcium sulfate, calcium nitrate, calcium chloride and/or dicalcium phosphate is... | 11/28/1989 |
| 4832735 | High nutrient value liquid fertilizer A liquid fertilizer containing about 6% to 9% nitrogen (N), 24% to 30% phosphoruspentoxide (P2 O5), and 5% to 9% potassium oxide (K2 O). The fertilizer is produced by the reaction of ammonium phosphate solution with phosph... | 05/23/1989 |
| 4742032 | Neutralization of spent solid phosphoric acid catalyst Spent solid phosphoric acid catalyst is neutralized prior to removal from a reactor vessel to avoid generation of toxic dust or acidic washings during catalyst removal.... | 05/03/1988 |
| 4662929 | Method for recovering nutrients from the flue gases of a fertilizer plant The invention relates to a method of recovering nutrients from the flue gases of a fertilizer plant by exposing hot, almost water-saturated reaction gases (4) obtained from the fertilizer production process to a countercurrent scrubbing (5, 6) and by scru... | 05/05/1987 |
| 4604126 | NP/NPK fertilizer granules comprised of ammonium phosphate Granular fertilizer solids comprising ammonium phosphate, advantageously particulate NP/NPK fertilizers, are prepared by (i) granulating a liquid/dry solids admixture of fertilizer values in a granulation zone, (ii) next transferring said admixture to, an... | 08/05/1986 |
| 4594090 | High nutrient content fertilizers A method of making fertilizer comprising the steps of mixing an aqueous solution of sulfuric acid with diammonium phosphate in a weight ratio of diammonium phosphate to sulfuric acid from about 3 to about 5, and mixing the resulting reaction products with... | 06/10/1986 |
| 4592771 | Method of producing di-ammonium phosphate fertilizer A novel method is provided to produce di-ammonium phosphate fertilizer by operating a DAP reactor and granulator in such a manner that part of the hot exhaust gases from the DAP reactor are diverted into a vaporizer where liquid ammonia is vaporized for u... | 06/03/1986 |
| 4568374 | Process for the preparation of fertilizers by the partial solubilization of phosphate rocks The object of the invention comprises a process for the preparation of fertilizers by solubilizing phosphate rocks containing impurities, which make processing thereof difficult. The process is a simple and direct one. The product thus prepared is easily ... | 02/04/1986 |
| 4537615 | Fertilizer from phosphorus furnace waste stream Processes and compositions of matter are disclosed for the production of liquid fertilizers wherein wastewater from a phosphorus smelting furnace is incorporated in liquid fertilizer processes. The wastewater replaces water evaporated and the wastewater d... | 08/27/1985 |
| 4511388 | Production of high-analysis ammonium orthophosphate suspension fertilizers by a new batch-type process An improved process for the production of highly concentrated (N-P2 O5) suspension fertilizers effected by the ammoniation of wet-process or other impure orthophosphoric acids in batch-type equipment. The underlying concept which goe... | 04/16/1985 |
| 4500335 | Composition of matter and method of use for nitrogen fertilization A method is provided for reducing ammonia volatilization loss from ammoniated fertilizers and urea-containing fertilizers which have been applied to the surface of the soil. The fertilizer is applied in the presence of a water soluble compound that (a) ha... | 02/19/1985 |
| 4482372 | Fluid fertilizer composition A fluid fertilizer composition based essentially on potassium chloride and an ammonium phosphate prepared by a process which comprises comminuting a solid substance containing potassium chloride and ammonium phosphate by grinding in the presence of a satu... | 11/13/1984 |
| 4451277 | Production of fluid fertilizer from phosphorus furnace waste stream Processes and compositions of matter are disclosed for the production of liquid fertilizers wherein wastewater from a phosphorus smelting furnace is incorporated in lqiuid fertilizer processes. The wastewater replaces water evaporated and the wastewater d... | 05/29/1984 |
| 4437997 | Clarification of ammonium polyphosphate solutions Suspended black carbonaceous material contained in aqueous ammonium polyphosphate solutions, which are derived from impure wet-process phosphoric acid, is removed by mixing such a solution with ionic, water soluble, organic polymers, holding the mixture u... | 03/20/1984 |
| 4436546 | Fertilizer material from apatite Apatite is conventionally made into a fertilizer material by treatment with a strong acid, requiring capital-intensive industry. Hydroxyapatite is treated above 1100° C. with alkali but world reserves are problematic. The invention treats apatite at 900Â... | 03/13/1984 |
| 4398936 | Process for the preparation of a granular NPK fertilizer and granular NPK fertilizers obtained by this process Storage-stable nitrogen-phosphorous-potassium fertilizer granules and prills are made by adding to a molten or aqueous solution mixture of ammonium nitrate and ammonium phosphate, a particulate potassium salt, typically potassium chloride, in which the pa... | 08/16/1983 |
| 4385920 | Granulation of potash salts A process for the granulation of potash salts to produce granules in high yield by the steps of mixing the potash salt with an inorganic phosphate binder and water, granulating the mixture and drying it.... | 05/31/1983 |
| 4377406 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid A process for the production of fluid fertilizers (suspensions and/or solution type) made from merchant-grade phosphoric acid (50-58 percent P2 O5), sulfuric acid, liquid anhydrous ammonia, and water, wherein liquid ammonia is heated... | 03/22/1983 |
