Search

The main conditions for obtaining decorative glass and glassy-crystalline materials from technogenic raw materials (overburden rocks, enrichment wastes, by-products of processing ores and concentrates, wastes of chemical industries) are considered. Relationships between the composition of the secondary raw materials and a number of important technological properties are established. The compositions and conditions of the production of decorative glass and glass with special properties made of technogenic raw materials from Murmansk region are developed. The efficiency of the compaction of glass batches is studied and the increase in the melting speed of the tableted batch and the clarification rate of the glass mass are experimentally observed.

Sorption removal of petroleum products and organic pollutants is one of the most efficient methods of cleaning waste water. A high degree of removal with easy regeneration of the sorbent is achieved when porous fluoroplastic is used as the sorbent. In this study, we obtained composite sorbents from porous fluoroplastic and studied their filtration properties with respect to hydrocarbons and phenol in waste water. These sorbents possess a higher phenol-sorption capacity until break-through than activated carbon. The phenol-sorption capacity depends linearly on the carbon content in the composite sorbent, and the hydrocarbons are sorbed by both the carbon and fluoroplastic. An important advantage of the composite sorbents over activated carbon is that they can be repeatedly regenerated.

A method for producing glass omitting the liquid phase, i.e., production of glass based on kanazite synthesized by hydrothermal treatment of amorphous rocks, is developed and scientifically substantiated. Kanazite is a complex glass material suitable for glass production without adding glass-forming components and clarifying or decolorizing agents. Owing to its amorphous phase composition and fine dispersion of components, kanazite is highly reactive.