Amorphous silicon dioxide, device for the production of amorphous silicon dioxide, method for the production of amorphous silicon dioxide, silicon produced from amorphous silicon dioxide, and method for the production of silicon

摘要

The present invention has been designed to achieve the above-mentioned object, allows to extract as much of an amorphous silica as possible, and aims at amorphous silica, an apparatus for producing amorphous silica, a method for producing amorphous silica Silicon produced from amorphous silicon dioxide, and to provide a method for producing silicon which allow an increase in the extraction amount per unit of time. To solve the problem, a process is characterized in that it comprises a pretreatment step (S1) in which by pulverizing a vegetable raw material a silica starting material is obtained, a combustion step (S2) in which silica is extracted by burning the silica starting material, and a cleaning step (S3) in which carbon is removed from a combustion product obtained in the combustion step where the combustion step comprises a heating step in which inert gas is introduced into a chamber and the silica starting material in the chamber is heated in a plasma atmosphere.