Morphology of the particles of by-products of steel rolling production
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DOI:
https://doi.org/10.32523/2616-6836-2019-129-4-59-64Abstract
This paper presents the results of the study of the morphological properties of the by-products of steel rolling
production - mill scale and oxide powder obtained by spray pyrolysis of spent pickling solution. Non-alloyed low-carbon steel containing the minimum amount of impurities was used as the initial object of study. The study of the structural characteristics and elemental composition of by-products was carried out using a Hitachi TM3030 scanning electron microscope with a Bruker XFlash MIN SVE microanalysis system with an accelerating voltage of 15 kV. It has been established that mill scale consists of small particles ranging in size from fractions of a micron to ∼ 100 microns, which are conglomerates of porous spherical
structures with a diameter in the range from about 100 to 300 nm. Powdered hematite obtained from spent pickling solution is a hollow microparticle of spherical shape, the average size of which is 120-140 microns.
