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| Number | Title | Issue Date |
| 7348100 | Product and method for the processing of precursors for lithium phosphate active materials Methods for producing an electrode active material precursor, comprising: a) producing a mixture comprising particles of lithium hydrogen phosphate, having a first average particle size, and a metal hydroxide, having a second avera... | 03/25/2008 |
| 7094328 | Strong acids, process for the preparation thereof, and uses thereof The present invention relates to acids of the general formula [I], [RyPF6-y]−H+ [I], where y=1, 2 or 3, and in which the ligands R may be identical or different and R is a perfluorinated C1-8-alkyl or aryl gro... | 08/22/2006 |
| 6921520 | Process for upgrading raw phosphate ore The present invention is a process for upgrading feedstock prepared from raw phosphate ore. Phosphorus sludge is burned to produce impure phosphoric acid and the acid is combined with beneficiated phosphate ore to prepare anhydrous monocalcium phosphate. Feedstock p... | 07/26/2005 |
| 6841301 | Fluoroalkyl phosphates for use in electrochemical cells The present invention relates to fluoroalkyl phosphates, to a process for the preparation, and to their use as conductive salts in batteries, capacitors, supercapacitors and galvanic cells. ... | 01/11/2005 |
| 6794083 | Fluoroalkylphosphate salt electrolytes The present invention relates to mixtures of fluoroalkylphosphate salts and polymers, methods of producing same, and their use in electrolytes, batteries, capacitors, supercapacitors and galvanic cells. ... | 09/21/2004 |
| 6667270 | Bismuth-and phosphorus-containing catalyst support, reforming catalysts made from same, method of making and naphtha reforming process Bismuth- and phosphorus-containing catalyst supports, naphtha reforming catalysts made from such supports, methods of making both support and catalyst, and a naphtha reforming process using such catalysts.... | 12/23/2003 |
| 6277780 | Preparation of phosphorus-treated activated carbon composition Disclosed is a method for preparing a phosphorus treated activated carbon composition suitable for use as a catalyst support, a catalyst, and an adsorbent. The invention method involves treating (e., mixing or impregnating) an activated carbon material ha... | 08/21/2001 |
| 6210830 | Lithium fluorophosphates and their use as conducting salts The invention relates to novel lithium fluorophosphates of the general formula Li+ [PFa (CHb Fc (CF3)d)e ]-, (I) wherein a is 1, 2, 3, 4 or 5, b is 0 or 1, c is 0, 1, 2 or 3, d... | 04/03/2001 |
| 6169222 | Remediation of soil polluted with phosphorus-containing wastes Elemental phosphorus was produced by the Tennessee Valley Authority (TVA) at Muscle Shoals, Ala. by smelting phosphatic material with carbon in electric furnaces. Solid wastes containing elemental phosphorus accumulated at the production facility as a res... | 01/02/2001 |
| 6129928 | Biomimetic calcium phosphate implant coatings and methods for making the same This invention encompasses porous, nanocrystalline, biomimetic calcium phosphate coatings of the order of 2-30 microns that can be grown on metal implants. The chemical surface treatments and methods for making the calcium phosphate coatings are disclosed... | 10/10/2000 |
| 6051201 | Preparation of phosphatic feedstock from phosphorus-containing waste Phosphorus furnaces were operated by the Tennessee Valley Authority (TVA) to produce elemental phosphorus beginning over the period 1936-1976. Elemental phosphorus was lost in phosphorus-containing waste throughout the 40 years TVA produced the element. L... | 04/18/2000 |
| 5549878 | Processes 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 prsent as a solution, as colloidal particles, and as settleable particl... | 08/27/1996 |
| 5292494 | Process for production of red phosphorous powder A process for the production of a red phosphorus powder, which comprises heating a yellow phosphorus at the boiling point therof in the presence of a dispersant selected from the group of a surfactant, a sparingly in water, finely powdered inorganic compo... | 03/08/1994 |
| 5122359 | Process for reprocessing sulfuric acid from phosphorous purification A process for reprocessing sulfuric acid obtained in the purification of yellow phosphorous, which comprises mixing the contaminated sulfuric acid with hydrogen peroxide and reacting this mixture in a vessel containing hot concentrated sulfuric acid at 11... | 06/16/1992 |
| 5075088 | Production of red phosphorus Amorphous red phosphorus useful for matches, or as flame retardant is made by forming a slurry of 10-45% red phosphorus in molten white phosphorus, reducing the content of yellow phosphorus to less than 20% of the red phosphorus by separation at less than... | 12/24/1991 |
| 5026757 | Red phosphorus flame retardant and nonflammable resinous composition containing the same A flame retardant comprising of spherical red phosphorus free of pulverized face which is directly produced in the form of fine powder by conversion of yellow phosphorus, without pulverizing process. The red phosphorus characterized by its surface state a... | 06/25/1991 |
| 4968499 | Conversion of precipitator dust into phosphorus furnace feedstock A process is disclosed for converting precipitator dust obtained during production of elemental phosphorus into feedstock for the submerged-arc electric furnace. Precipitator dust is agglomerated and indurated to prepare furnace feedstock. A binder is mad... | 11/06/1990 |
| 4961912 | Passivation of elemental phosphorus contained in waste ponds Elemental phosphorus contained in waste ponds can be appropriately passivated to render them substantially less pyrophoric by bringing the elemental phosphorus-containing wastes into contact with an oxygen-containing gas. Substantially pure oxygen can be ... | 10/09/1990 |
| 4919906 | Processes and equipment for production of elemental phosphorus and thermal phosphoric acid New processes and equipment are disclosed for producing elemental phosphorus and thermal phosphoric acid. Benefits are listed below. 1. Phosphorus-containing solids are recycled to smelting furnaces thus eliminating hazardous waste generation. 2. Phosphorus fu... | 04/24/1990 |
| 4904459 | Process for working up dusts which are produced in the electrothermal production of phosphorus A process is provided for working up dusts which have been precipitated electrostatically from the gas mixture composed essentially of carbon monoxide and phosphorus vapor produced in the electrothermal production of yellow phosphorus, which process compr... | 02/27/1990 |
| 4889702 | Process for removing metallic constituents from dust obtained during the electrothermal production of yellow phosphorus Metallic constituents, especially heavy metal constituents are removed from dust electrostatically separated from a gas mixture consisting substantially of carbon monoxide and phosphorus in vapor form obtained during the electrothermal production of yello... | 12/26/1989 |
| 4879067 | Red phosphorus flame retardant and nonflammable resinous composition containing the same A flame retardant comprising of spherical red phosphorus free of pulverized face which is directly produced in the form of fine powder by conversion of yellow phosphorus, without pulverizing process. The red phosphorus characterized by its surface state a... | 11/07/1989 |
| 4874593 | Conversion of pyrophoric P4 -containing material to P2 O5 material A process for treating a pyrophoric P4 -containing material to convert it to a substantially non-pyrophoric P2 O5 material is described. The process comprises supplying streams of fluid P4 -containing material a... | 10/17/1989 |
| 4822583 | Phosphate feed material for phosphorus electric furnaces and production of same Compacted shapes of phosphatic material, suitable as a charge for a phosphorus furnace, are produced by compacting a mixture of calcined phosphate fines and phosphoric acid. The compacted shapes are conveniently produced on a roll briquetting press.... | 04/18/1989 |
| 4806326 | Phosphate feed material for phosphorus electric furnace Nodule fines, formed by abrasion of an electric furnace feed material of phosphate shale nodules, are utilized by mixing a recycle stream of the nodule fines with fresh phosphate in the presence of phosphoric acid prior to forming the shale into nodules. ... | 02/21/1989 |
| 4806325 | Process for recovering elemental phosphorus and a metal concentrate from ferrophos Ferrophos is treated in a plasma furnace by maintaining an electric arc between a cathode and at least one point on the surface of the ferrophos which serves as the anode in the presence of an inert plasma gas, maintaining the average temperature of the f... | 02/21/1989 |
| 4783328 | Utilization of phosphourus containing by-products Phosphorus values in the raffinate from wet acid purification and nodule fines from an electric phosphorus furnace are recovered as elemental phosphorus by forming briquettes with a bed of the raffinate and nodule fines, curing the briquettes and feeding ... | 11/08/1988 |
| 4780296 | Process for producing phosphorus A process for producing phosphorus, which comprises supplying a phosphorite ore to melting simultaneously with feeding paraffin or higher fatty acids C20 -C24, melting the phosphorite ore in the presence of a reducing agent and quart... | 10/25/1988 |
| 4762697 | Removal of phosphorus from mud Phosphorus mud and other phosphorus-containing waste materials are processed to remove water and phosphorus and to leave a solid mass which is safe for disposal. The phosphorus mud is heated to boil off the water and then to boil off yellow phosphorus, wh... | 08/09/1988 |
| 4746499 | Method of decontaminating a location containing pyrophoric P4 -contamination A method of decontaminating a location containing pyrophoric P4 -contamination is described. It comprises bringing to the location a portable vehicle which comprises at least one of the necessary items needed to accomplish the contacting of the... | 05/24/1988 |
| 4744971 | Process for treatment of phossy water for recycling In the electric arc furnace production of elemental phosphorus, cold phossy water is segregated from hot phossy water. The cold phossy water is discharged to a lined pond wherein solids settle to form a clarified cold water which is recycled for cooling a... | 05/17/1988 |
| 4689121 | Recovery of phosphorus from sludge A process of recovering elemental phosphorus from sludge is disclosed wherein the sludge is flash evaporated utilizing a heat transfer means and then separated from the solid impurities contained therein.... | 08/25/1987 |
| 4686094 | Treatment of pyrophoric elemental phosphorus-containing material Pyrophoric elemental phosphorus-containing material, e.g., solid waste containing high levels of elemental phosphorus (P4), is treated by contact with an oxygen-containing gas, such as air, to reduce the amount of elemental phosphorus contained... | 08/11/1987 |
| 4656020 | Production of phosphorus and phosphoric acid Processes are disclosed for recovering solid wastes containing elemental phosphorus. The wastes may cause serious environmental problems at phosphorus furnaces because elemental phosphorus is toxic to marine animals. Recovery of the wastes was considered ... | 04/07/1987 |
| 4605540 | Low volatile fluorine process for making elemental phosphorus The present invention concerns an improvement in the electric furnace process for making elemental phosphorus. The invention features the deliberate addition of an alkali to the burden or charge that is fed to the furnace. Several advantages are gained by... | 08/12/1986 |
| 4537756 | Process for the electrothermal production of yellow phosphorus The disclosure relates to a process for removing foreign components, especially zinc, from the product cycle during the production of yellow phosphorus inside and electrothermal furnace. To this end, the disclosure provides for molten ferrophosphorus and ... | 08/27/1985 |
| 4526766 | Production of red phosphorus Red amorphous phosphorus is formed by thermal conversion of yellow phosphorus by a process wherein thermal conversion is effected while simultaneously the heat of conversion is permitted to effect evaporation of yellow phosphorus. The evaporated yellow ph... | 07/02/1985 |
| 4514366 | 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 liquid fertilizer processes. The wastewater replaces water evaporated and the wastewater d... | 04/30/1985 |
| 4481176 | Treatment for phosphorus-containing waste material The invention is directed to a process for recovering elemental phosphorus values from phosphorus-containing waste materials. The process comprises reducing the size of the solid particulate materials of the sludge and forming a uniform homogenous sludge ... | 11/06/1984 |
| 4462973 | Phosphorus purification Liquid phosphorus as produced by the reduction of a phosphate ore in an electric arc furnace while of high purity contains color-causing impurities that impart to the phosphorus a black color by reflected light. Such liquid phosphorus is polished or refin... | 07/31/1984 |
