Investigation of physicomechanical properties of carbide-silicon materials using the disten-sillimanite raw material of Ukraine

Abstract

Structural destruction is less for products used in various furnaces of ferrous and non-ferrous metallurgy, on the surface of which a melt with a high viscosity is formed during service. With this in mind, it seems appropriate to use silicon carbide materials, the grains of which are coated with a quartz film that protects SiC from rapid destruction in an oxidizing medium. To form a quartz film on carborundum grains, it is necessary to introduce quartz-containing raw materials, in particular, disthen-sillimanite concentrate, which allows to create the necessary phase composition of the lining mass in the process of raising the temperature at the initial stage of the furnace operation. The article is considered the possibility of using the disthen-sillimanite raw materials of Ukraine in the development of carbide-silicon materials. Various types of binder (ethyl silicate ETS-40, ETS 40/60, TLS, thermoplastic), variants of their correlation among themselves, and also with a different amount of disthen-sillimanite concentrate, are given. The possibility of controlling the physical and mechanical characteristics of materials by adjustment of the components ratio of binder and disthen-sillimanite concentrate is shown. The best combination of characteristics of silicon carbide materials, which is achieved by using a specific amount of disthen-sillimanite concentrate, is established.