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8974760 Hydrogen chloride gas ejecting nozzle, reaction apparatus for producing trichlorosilane and method for producing trichlorosilane  
There is provided a hydrogen chrolide gas ejecting nozzle 1 used in a reaction apparatus for producing trichlorosilane in which metal silicon powder is reacted with hydrogen chloride gas to...
8940264 Process for producing polycrystalline silicon  
The invention provides a process for producing polycrystalline silicon, by introducing reaction gases containing a silicon-containing component and hydrogen into reactors to deposit silicon,...
8920761 Method for producing high purity silicon  
The present invention relates to a method for producing high purity silicon comprising providing molten silicon containing 1-10% by weight of calcium, casting the molten silicon, crushing the...
8894959 Silicon Production method  
There is provided a silicon production method which comprises producing semiconductor grade silicon while producing solar grade silicon by converting a portion of trichlorosilane into silicon for...
8778143 Silicon purification method and silicon purification device  
The silicon purification method uses a silicon purification device including at least a crucible for loading a silicon metal and a plasma torch, and purifies the silicon metal by injecting a...
8747693 Silica having metal ions absorbed thereon and fabricating method thereof  
A silica having metal ions absorbed thereon and a fabricating method thereof are provided. The silica having metal ions absorbed thereon is a silica having metal ions absorbed thereon and being...
8709370 Method and system for producing fluoride gas and fluorine-doped glass or ceramics  
The present invention relates generally to production of a fluoride gas and equivalents thereof, and fluorine-doped sodium silicate glass, glass ceramics, vitro ceramics and equivalents thereof....
8668895 Purifying method for metallic silicon and manufacturing method of silicon ingot  
In a purifying method for metal grade silicon, metal grade silicon with a silicon concentration not less than 98 wt % and not more than 99.9 wt % is prepared. The metal grade silicon contains...
8657956 Apparatus for producing solid product  
Provided is a production method and a production apparatus using a method for producing a solid product by a reaction of gaseous raw materials with a plurality of components including a step of...
8658118 High purity crystalline silicon, high purity silicon tetrachloride for processes for producing the same  
An object of the present invention is to provide more inexpensive high purity crystalline silicon which can satisfy not only a quality required to a raw material of silicon for a solar cell but...
8580218 Method of purifying silicon utilizing cascading process  
The present invention relates to a method of purifying a material using a metallic solvent. The present invention includes a method of purifying silicon utilizing a cascade process. In a cascade...
8568683 Method for making silicon for solar cells and other applications  
A method for preparation of high purity silicon suitable for photovoltaic cells using reduction of silica, which is pre-purified in an aqueous solution, in presence of a reducing agent, preferably...
8568684 Methods for synthesizing submicron doped silicon particles  
Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the...
8562932 Method of purifying silicon utilizing cascading process  
The present invention relates to a method of purifying a material using a metallic solvent. The present invention includes a method of purifying silicon utilizing a cascade process. In a cascade...
8518352 Apparatus and method for producing polycrystalline silicon having a reduced amount of boron compounds by venting the system with an inert gas  
The invention concern an apparatus and a method for manufacturing polycrystalline silicon having a reduced amount of boron compounds. The invention feeds Ar gas in a trichlorosilane line, which...
8475758 Low cost routes to high purity silicon and derivatives thereof  
The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount...
8449848 Production of polycrystalline silicon in substantially closed-loop systems  
Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon.
8435477 Dispersions of submicron doped silicon particles  
Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the...
8372372 Clean bench and method of producing raw material for single crystal silicon  
A clean bench comprising a worktable on which polycrystalline silicon is placed, a box part which includes side plates to surround three sides except a front face of a working space above the...
8354088 Methods and apparatus for recovery of silicon and silicon carbide from spent wafer-sawing slurry  
Methods, systems, and apparatus are disclosed herein for recovery of high-purity silicon, silicon carbide and PEG from a slurry produced during a wafer cutting process. A silicon-containing...
8337795 Production of high purity silicon from amorphous silica  
A process to the production of silicon from amorphous silica is disclosed. The amorphous silica is formed from a material rich in silica, especially rice husk ash or silica fume. The process...
8318121 Device and method for the processing of non-ferrous metals  
In a device and a method for the processing of non-ferrous metals for simple and economic reduction of the concentration of impurity elements and/or impurity compounds contained in the non-ferrous...
8282904 Cylindrical vessel made of carbon and process for making silicon  
A cylindrical vessel made of carbon is used in the production of silicon. The inner surface of the vessel comes into contact with a silicon melt, wherein the permeation with silicon melt is...
8273317 Method for manufacturing high purity polycrystalline silicon  
An method for manufacturing a high purity polycrystalline silicon is characterized by comprising: supplying a silicon chloride gas from a silicon chloride gas supply nozzle and a zinc gas from a...
8241401 Apparatus and method for producing purified hydrogen gas by a pressure swing adsorption processes  
The invention relates to a method and an apparatus for producing purified hydrogen gas by a pressure swing adsorption process. Further the invention relates to detecting an operating life of...
8187361 Effluent gas recovery system in polysilicon and silane plants  
Purified SiHCl3 and/or SiCl4 are used as a sweep gas across a permeate side of a gas separation membrane receiving effluent gas from a polysilicon reactor. The combined sweep gas and permeate is...
8187564 Process for producing boron added purified silicon  
Provided is a process for producing a boron added silicon (purified silicon) in an energy saving mode from a reduced silicon obtained by reducing a silicon halide with a metal aluminium. The...
8173094 Method for producing polycrystalline silicon  
The present invention provides a method for producing polycrystalline silicon. The method for producing polycrystalline silicon comprises the steps of (A), (B), and (C), (A) reducing a...
8158093 Fluidized bed reactor for production of high purity silicon  
Methods and apparatus for the production of high purity silicon including a fluidized bed reactor with one or more protective layers deposited on an inside surface of the fluidized bed reactor....
8147656 Method for the production of silicon from silyl halides  
The present invention relates to a method for the production of silicon from silyl halides. In a first step, the silyl halide is converted, with the generation of a plasma discharge, to a...
8124041 Process for producing silicon  
A process for producing silicon comprises the steps of a reduction step [1] of depositing silicon by reacting chlorosilanes and hydrogen in a reactor under heat and discharging an exhaust gas that...
8110167 Nanowire synthesis from vapor and solid sources  
Methods of the present invention can be used to synthesize nanowires with controllable compositions and/or with multiple elements. The methods can include coating solid powder granules, which...
8043593 Nanoscale crystalline silicon powder  
An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated silicon powder may be doped with phosphorus, arsenic, antimony, bismuth, boron,...
8034300 Apparatus for producing trichlorosilane  
This apparatus for producing trichlorosilane includes: a vessel having a gas inlet that introduces a feed gas into the vessel and a gas outlet that discharges a reaction product gas to the...
8017099 Method for producing polycrystalline silicon, and facility for producing polycrystalline silicon  
A method for producing polycrystalline silicon, including: reacting trichlorosilane and hydrogen to produce silicon and a remainder including monosilanes (formula: SiHnCl4-n, wherein n is 0 to 4)...
7972584 Magnesiothermic methods of producing high-purity silicon  
Magnesiothermic methods of producing solid silicon are provided. In a first embodiment, solid silica and magnesium gas are reacted at a temperature from 400° C. to 1000° C. to produce solid...
7964172 Method of manufacturing high-surface-area silicon  
A method for synthesis of high surface-area (>100 m2/g) and nanosized (≦100 nm) silicon powder by initiation of self-sustained combustion reaction in a mixture of silicon dioxide and magnesium...
7955582 Method for producing crystallized silicon as well as crystallized silicon  
A method for producing crystallized silicon according to the EFG process by using a shaping part, between which part and a silicon melt, crystallized silicon grows in a growth zone. Inert gas and...
7943109 Process for the production of Si by reduction of SiCl4 with liquid Zn  
The invention relates to the manufacture of high purity silicon as a base material for the production of e.g. crystalline silicon solar cells. SiCU is converted to Si metal by contacting gaseous...
7939173 Polycrystalline silicon rod for zone reflecting and a process for the production thereof  
The invention relates to a polysilicon rod for FZ applications obtainable by deposition of high-purity silicon from a silicon-containing reaction gas, which has been thermally decomposed or...
7935327 Silicon production with a fluidized bed reactor integrated into a siemens-type process  
A fluidized bed reactor and a Siemens reactor are used to produce polycrystalline silicon. The process includes feeding the vent gas from the Siemens reactor as a feed gas to the fluidized bed...
7927570 Nanoscale crystalline silicon powder  
An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated crystalline silicon may be doped with a doping component and can be used to produce...
7927571 Method and device for producing high purity polycrystalline silicon with a reduced dopant content  
In the batch production of high purity polycrystalline silicon, in which a U-shaped silicon carrier body is fastened in an open deposition reactor, the deposition reactor is hermetically sealed,...
7922989 Method for making silicon for solar cells and other applications  
A method for preparation of high purity silicon suitable for photovoltaic cells using reduction of silica, which is pre-purified in an aqueous solution, in presence of a reducing agent, preferably...
7883680 Method for purifying silicon  
The present invention provides for methods of purifying silicon, methods for obtaining purified silicon, as well as methods for obtaining purified silicon crystals, purified granulized silicon...
7871590 Mass of silicon solidified from molten state and process for producing the same  
A solidified mass for a high-purity multicrystal silicon material that is preferably applicable to producing crystal type silicon ingots for photo voltaics, and a process for producing the...
7858063 High purity metallurgical silicon and method for preparing same  
The invention concerns a silicon designed in particular for making solar cells containing a total of impurities ranging between 100 and 400 ppm, a boron content ranging between 0.5 and 3 ppm, a...
7829031 Methods and systems for multistage processing of fluidized particulate solids  
Methods and systems for continuous multistage processing of particulate solids that can control the distribution of residence times of processed particles. One disclosed method includes admitting...
7815884 Method for producing polycrystalline silicon  
To provide a method for producing polycrystalline silicon at relatively low cost, wherein the amount of waste generated is reduced by decreasing the amount of waste generated in producing...
7799306 Method of purifying metallurgical silicon by directional solidification  
The method enables metallurgical silicon to be purified by directional solidification to obtain solar or photovoltaic grade silicon. A crystallization step uses at least one silicon seed,...

Matches 1 - 50 out of 316 1 2 3 4 5 6 7 >