Synthesis of Wollastonite from Superfine Amorphous Silicon Dioxide of Natural and Technogenic Origin
It is shown the possibility of using superfine amorphous silicon dioxide SiO2nH2O of natural and technogenic origin for the synthesis of wollastonite. Natural silica is presented by diatomite selected at the Puzanov Cape (Kunashir Island, Kuril Islands). Amorphous silica of technogenic origin is obtained when complex processing of fluorine-containing waste at the Yaroslavsky Mining and Processing Plant. Wollastonite produced of these types of raw material can be used in various industries i.e. paint industry, production of building materials, pigments and sorbents for purification of aqueous media.