Open AccessMorphology, phase composition and radiological properties of fly ash obtained from the Burshtyn thermal power plant
Author(s) -
Ivan Mironyuk,
Tetiana Tatarchuk,
Hanna Vasylyeva,
I. P. Yaremiy,
Igor Mykytyn
Publication year - 2019
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.19.2.171-178
Subject(s) - fly ash , mullite , chemical composition , materials science , combustion , quartz , coal combustion products , thermal power station , ferric , cenosphere , phase (matter) , mineralogy , chemical engineering , chemistry , metallurgy , composite material , waste management , ceramic , organic chemistry , engineering
The physic-chemical properties of ash extracted from smoke during the combustion of coal at the Burshtyn thermal power plant were investigated. The particles formed in the flame are crystallized glass beads with a size of 0.8–600 μm. It was found that the ash particles are heterogeneous in their chemical composition. The mass content of the ferric oxides can vary from 2.1% to 96.4%, however, despite this, the Al2O3/SiO2 ratio in the glass balls remains constant at a value of 0.47±0.02. Phase analysis confirmed the presence of α-quartz particles (~ 62 wt%), mullite (~ 32 wt%) and α-FeOOH, α-Fe2O3 and Fe3O4 mixtures (totaling 6 wt%). Radiological studies have revealed higher β- and γ-activity of fly ash, selected from the dump, compared with the fly ash from the electro-filter. This is due to the accumulation of 214Pb and 214Bi radionuclides particles formed on the surface of the particles due to due to decay of 222Rn.