Patent application number | Description | Published |
20110214425 | ENERGY-EFFICIENT SYSTEM FOR GENERATING CARBON BLACK, PREFERABLY IN ENERGETIC COOPERATION WITH SYSTEMS FOR GENERATING SILICON DIOXIDE AND/OR SILICON - The object of the invention is a more energy-efficient system for utilizing waste heat and residual gases from the engineered generation of carbon compounds, such as carbon black, graphite or from sugar pyrolysis, using a coupling of energy-heat or a thermal heat-generating plant for generating electrical energy, in particular for operating melt furnaces, and/or for utilizing the waste heat in endothermal processes. The invention also relates to the use of waste heat. | 09-08-2011 |
20110236291 | SYSTEM FOR PRODUCING SILICON WITH IMPROVED RESOURCE UTILIZATION - The present invention relates to a system for producing silicon, preferably high-purity silicon, particularly solar silicon, and to a method for producing silicon, preferably high-purity silicon, in particular solar silicon, in each case with particularly effective resource utilization and reduced emission of pollutants. | 09-29-2011 |
20110262336 | PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE - The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a silicon oxide, purified by acidic precipitation from an aqueous solution of a silicon oxide dissolved in an aqueous phase, using one or more pure carbon sources, the purified silicon oxide being obtained, in particular, by the precipitation of a silicon oxide dissolved in an aqueous phase in an acidifier. The invention also relates to a formulation containing an activator and to a device for producing silicon, a reactor and electrodes. | 10-27-2011 |
20120230905 | PROCESS FOR PYROLYSIS OF CARBOHYDRATES - The present invention relates to processes for industrial pyrolysis of a carbohydrate or carbohydrate mixture with addition of amorphous carbon, to a pyrolysis product thus obtainable and to the use thereof, especially as a reducing agent in the production of silicon from silica and carbon at high temperature. | 09-13-2012 |
20130015175 | METHOD FOR PRODUCING SILICONAANM Karl; AlfonsAACI GrundauAACO DEAAGP Karl; Alfons Grundau DEAANM Lang; Jurgen ErwinAACI KarlsruheAACO DEAAGP Lang; Jurgen Erwin Karlsruhe DEAANM Rauleder; HartwigAACI RheinfeldenAACO DEAAGP Rauleder; Hartwig Rheinfelden DEAANM Frings; BodoAACI Schloss HolteAACO DEAAGP Frings; Bodo Schloss Holte DE - The present invention relates to an improved process for producing silicon, preferably solar silicon, using novel high-purity graphite mouldings, especially graphite electrodes, and to an industrial process for production of the novel graphite mouldings. | 01-17-2013 |
20140041548 | PROCESS FOR PRODUCING SIO2 MOULDINGS - The present invention relates to a process for producing SiO | 02-13-2014 |
20140042359 | PROCESS FOR PREPARING AQUEOUS COLLOIDAL SILICA SOLS OF HIGH PURITY FROM ALKALI METAL SILICATE SOLUTIONS - The present invention relates to a process for preparing aqueous colloidal silica sols of high purity from silicate solutions, to aqueous colloidal silica sols with a specific profile of impurities, and to the use thereof. The invention further encompasses high-purity aqueous silica obtained as an intermediate in the course of the purification process, high-purity silicon dioxide obtainable by dewatering, and the use thereof. | 02-13-2014 |
20140072803 | HIGH-PURITY SILICON DIOXIDE GRANULES FOR QUARTZ GLASS APPLICATIONS AND METHOD FOR PRODUCING SAID GRANULES - It has been found that conventional cheap waterglass qualities in a strongly acidic medium react to give high-purity silica grades, the treatment of which with a base leads to products which can be processed further to give glass bodies with low silanol group contents. | 03-13-2014 |
20140079620 | METHOD FOR THE SEPARATION OF METAL IONS THAT ARE DIVALENT OR HIGHER FROM STRONG ACIDS OR HIGHLY ACIDIC MEDIA - The present invention relates to a method of purifying strong acids or strongly acidic media to remove di- and higher valent metal ions, which can be used within the context of the production of high-purity silica. The invention further relates to the use of special ion exchangers for carrying out the method according to the invention and the resultant high-purity silicas. | 03-20-2014 |