NANOSILICA OBTAINMENT AND APPLICATION TECHNOLOGY IN THE PRODUCTION OF NEW MATERIALS IN MECHANICAL ENGINEERING
The paper presents a brief overview of the existing varieties of amorphous silica, technologies of its production and the main areas of application. The main subject of investigation in this article are industrial varieties of amorphous nanosilica, these materials represent high-margin products, the most popular in modern industry. Nanostructures on the basis of amorphous silicon dioxide are obtained in various ways, ranging from raw dust withdrawn from ore-thermal furnaces for the silicon production, to costly chemical and pyrolytic methods. One of the promising ways to obtain high quality amorphous nanosilica is pretreatment of dust of ore-thermal furnaces for production of silicon for the purpose of removing the carbon and other impurities. Obtained by this method, the