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8784744 Device making phosphorus by thermal process  
The present invention discloses an apparatus for thermally refining phosphorus. The apparatus comprises: a melting furnace for melting rock phosphate into melts, including a feed port and a melt...
8784693 Method for making phosphorated composite  
A method for making a phosphorated composite is provided. First, a mixture is obtained by mixing a source material with red phosphorus. The weight ratio of the source material to the red...
8747792 Method for preparing high-purity elemental phosphorus and method for preparing high-purity phosphoric acid  
Provided is a method for preparing high-purity elemental phosphorus capable of simultaneously reducing both arsenic and antimony from crude white phosphorus containing a great amount of arsenic...
8741226 Reduction-oxidation furnace for making phosphorus by thermal process  
The present invention discloses a reduction-oxidation furnace for thermally refining phosphorus. The reduction-oxidation furnace comprises a furnace body and a blow gun, wherein the furnace body...
8389158 Lithium-ion battery using phosphorated composite  
A lithium-ion battery includes an anode, a cathode, and an electrolyte. The anode includes a phosphorated composite including a conductive matrix and a red phosphorus. The conductive matrix...
8182779 Process for removing phosphorus-containing colloids and their precursors from iron chloride solutions  
The disclosure provides a process for removing phosphorus-containing colloids and their precursors from an iron chloride solution comprising: (a) heating the iron chloride solution comprising...
8114542 Method for production of an anode for a lithium-ion battery  
The invention relates to a method for producing an anode for a lithium-ion battery, said anode comprising a current collector formed from a transition metal M in the form of a foam and an active...
7918933 Dispersion of high surface area silica  
Dispersion comprising water and mixed potassium silicon oxide powder, where—the mixed oxide powder is in the form of aggregates of primary particles, has a BET surface area of 100 to 400 m2/g, has...
7820125 Phosphorus effusion cell arrangement and method for producing molecular phosphorus  
The phosphorus effusion cell arrangement according to the present invention comprises a first vacuum container for red phosphorus, a second vacuum container for white phosphorus, said first and...
7641711 Metal vapour condensation and liquid metal withdrawal  
Liquid metal is continuously recovered by condensing metal vapour in a sealed system, more or less at atmospheric pressure, and collecting liquid metal in a crucible. The contents of the crucible...
7182872 Struvite crystallization  
The present invention provides a method and apparatus for removing phosphorus from phosphorus containing waste. In one embodiment, the method is preferably carried out by contacting the phosphorus...
6955796 Process for total environmental remediation of a phosphorus contaminated site  
A process is disclosed for recovering elemental phosphorus from an aqueous sludge and converting the residue into non-hazardous waste. The sludge is separated into (1) a slurry of water containing...
6680130 High K dielectric material and method of making a high K dielectric material  
A dielectric material having a high dielectric constant includes a Group III metal oxide and a Group V element. The incorporation of the Group V element in the Group III metal oxide material...
6645625 Stabilized red phosphorus material and a process for its preparation  
The invention relates to a stabilized, pulverulent red phosphorus material composed of phosphorus particles whose particle size is not more than 2 mm, and whose surface has been covered with a...
6620396 Method of removing phosphorus from sludge  
A method of recovering elementary phosphorus from an aqueous sludge containing about 1 to about 15 wt % dispersed particles of phosphorus is disclosed. To the sludge is added about 1 to about 20...
6592831 Vaporization and cracker cell method and apparatus  
A method and apparatus for vaporizing and cracking chemical elements for use in a deposition process. The apparatus includes a vaporization cell integrally connected with a thermal cracker cell....
6451276 Recovery of elemental phosphorus from phosphorus sludge  
Disclosed is a method of recovering elemental phosphorus from a sludge that contains water, dirt, and elemental phosphorus. In the first step, the sludge is melted. A mixture is formed of the...
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...
6180235 Phosphorus-containing iron powders  
Phosphorus-containing iron powder is prepared by mixing carbonyl iron powder or whiskers with elemental phosphorus, heating the mixture and comminuting the product obtained to give a powder. The...
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...
6146610 Process for removal of arsenic from elemental phosphorus  
Arsenic is removed from elemental phosphorus by treating it with an oxidized form of iodine in a sufficient amount and for a sufficient time to obtain the amount of arsenic reduction desired. When...
6110438 Method of making black phosphorus from red phosphorus  
The specification describes a method for producing black phosphorus from red phosphorus by thermally cycling red phosphorus in a vacuum between 360-400° C. and 200-240° C., whereupon the red...
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...
6022514 Method for recovering phosphorus from organic sludge  
A method for recovering phosphorus from organic sludge includes the steps of producing incinerated ash from organic sludge, mixing the incinerated ash with a carbon source, vaporizing phosphorus...
5989509 Method for extracting antimony from elemental phosphorous  
A process for purifying elemental phosphorus that contains antimony using an oxidizer, such as hydrogen peroxide, peroxymonosulfate, peroxydisulfate, or a hypochlorite, in a two phase system...
5670126 Method for extracting antimony from elemental phosphorus  
A process for purifying elemental phosphorus, by dosing a multi-phase elemental phosphorus system, having an aqueous phase and an immiscible, elemental phosphorus phase containing antimony, with a...
5588969 Method for supplying phosphorous vapor  
In accordance with the invention, phosphorous vapor is provided by in situ conversion of red phosphorous to white phosphorous and permitting the flow of vapor from said white phosphorous. The...
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...
5543444 Red phosphorus flame retardant and nonflammable resinous composition  
Disclosed is a red phosphorus flame retardant comprising a fine red phosphorus powder subjected to a surface modification treatment, said fine red phosphorus powder consisting of spherical red...
5538702 Gas stream purification apparatus  
A method for the treatment of a stream of exhaust gases including phosphine in which the stream is heated to a sufficiently high temperature to decompose the phosphine to phosphorus vapor and the...
5514352 Apparatus for high speed air oxidation of elemental phosphorous wastes in aqueous medium  
Apparatus and process for high speed air dispersion (HSAD) and oxidation of elemental phosphorus in aqueous medium. The HSAD apparatus is an element used in a process designed for treating the...
5310530 Method for decreasing the sulfur content of phosphorous  
A method for purifying phosphorus to insure a low sulfur content involves intensively mixing phosphorus and concentrated sulfuric acid to form an emulsion, breaking the emulsion by contact with...
5296212 Method for the removal of sulfur from phosphorus  
A method for purifying white phosphorus contaminated with sulfur bound thereto involves contacting contaminated white phosphorus with water, steam, aqueous solutions, or vaporized aqueous...
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...
5283042 Process for the purification of white phosphorus  
Impure white phosphorus values are purified to such extent as to be useful, e.g., for the preparation of P4 S10 therefrom, by (a) reacting liquid, impure white phosphorus with an aqueous...
5270370 Red phosphorus  
Evolution of phosphine from red phosphorus is reduced by means of acyclic, aliphatic compounds having at least one carbon-to-carbon double bond, in the alpha-position relative to an...
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...
5093199 Stabilized red phosphorus  
In a stabilized, pulverulent red phosphorus comprising phosphorus particles having a maximum particle size of 2 mm whose surface is covered with a thin layer of an oxidation stabilizer, the...
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...
5041490 Method for producing red phosphorus flame retardant and nonflammable resinous composition  
Red phosphorus flame retardants for synthetic resin are produced by a method comprising the steps of heating yellow phosphorus at temperatures of 250° to 600° C. to effect a partial conversion of...
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...
5002745 Method of separating and recovering phosphorus from phosphorus sludge  
A process is described for the separation and recovery of phosphorus from phosphorus-dirt mixtures by adding a quaternary ammonium compound to the mixture, while it is under an aqueous cover,...
4985221 Phlegmatized red phosphorus  
Phlegmatized, pulverulent red phosphorus with good free-flowing properties comprises 95 to 99.95% by weight of red phosphorus having a particle size of up to 2 mm, and 0.05 to 5% by weight of...
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...
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...
4902491 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...
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...
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...
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...
4853288 Stabilized red phosphorus and process for making it  
Stabilized pulverulent red phosphorus consisting substantially of particles with a size of at most 2 mm, encapsulated in a thin layer of an oxidation stabilizer consisting of at least one scarcely...

Matches 1 - 50 out of 205 1 2 3 4 5 >