The use of cenospheres for the production of spheroplastics with high dielectric characteristics, obtained from ash of thermal power plant operating on solid fuel

Abstract

Abstract Current work investigates problems of smoke emissions utilization from thermal power plants operation on solid fuel. During the work of this TPP type, a significant amount of ash is formed. During flotation, a pop-up fraction consisting of hollow spherical particles – cenosphere is distinguished from it. One of the promising applications of the cenospheres is their use as a filler in the production of spheroplastics. Cenospheres ecological safety was studied for the presence of heavy metals and the impact of water hoods on bioorganisms. Cenospheres’ shell chemical composition was determined using an X-ray fluorescence spectrometer «Cпeктроскaн». It is determined that the censosphere consists mainly of aluminium oxide and silicon oxide, and heavy metals are presented in trace amounts. Micro-organisms’ test reactions of the daphnia magna showed the absence of toxic characteristics in the cenospheres. Considering tests results, it was concluded that use of the cenospheres in spheroplast was safe. Based on the unique composition of cenosphere shell made of aluminum and silicon oxides, it was concluded that they should be used as dielectric materials. Dielectric characteristics of spheroplastics on the basis of cenosphere and connector, polymethylphenylsiloxane resin of domestic manufacture, in the field of centimeter microwave radio range are studied by the waveguide method. The research results showed that the dielectric characteristics of spheroplastics are at a very high level. The use of polymethylphenylsiloxane connector allows not only to increase the dielectric characteristics and durability of spheroplastics, but also partially reduce the combustibility and flammability of structures.