Registration Number
0220U103405,
0119U103264
, R & D reports
Title
Chemical-ecological characteristics of technogenic secondary mineral resources and technological processes of metal processing
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Head
Hobotova Elina B., Доктор хімічних наук
Registration Date
28-09-2020
Organization
Kharkiv National Automobile and Road University
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The object of research is the slag of Pobuzhsky ferronickel plant as sorption material, brass L-62, model chloride pickling solutions, electrolytic coatings Co-Mo-ZrO2, Co-W-ZrO2 and Co-Mo-WxOy.
The purpose of the work is ecological substantiation of the use of non-metallic raw materials of Ukraine as sorption material by studying the process of chemical activation of slag and its dependence on the nature of sorbate and studying physicochemical patterns of metal processing to further improve and optimize these technologies.
Research methods - X-ray phase analysis, electron-probe microanalysis, spectrophotometric analysis, calculation and analytical analysis, rotating disk electrode method (RES), chemical deposition, potentiometry method in pulse and galvanostatic modes.
Results and their novelty:
The sorption properties of metallurgical slag for the production of ferroalloys are considered. Its elemental and mineralogical composition has been experimentally determined. It is shown that the main mineral is diopside, which has a layered structure. The slag contains an amorphous phase. The absence of desorption from slag of toxic components is proved. The use of acid-activated slag as a sorbent of compounds of organic origin is recommended. The value of the sorption capacity of slag in relation to various organic dyes is established.
Physicochemical regularities of dissolution of L-62 alloy in concentrated chloride solutions have been established. Eact values indicate a diffusion limitation of the process of dissolving the L-62 alloy in FeCl3 solutions. The change in the nature of the slowing down stage of ionization of the L-62 alloy with increasing temperature is shown and it is proved that the reason is the change in the selectivity coefficients Z of the dissolution of the alloy components. The removal of the kinetic limitations of the dissolution of brass is associated with the facilitation of ionization of the copper component of the alloy.
The process of elect
Product Description
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Egorova Lilia M
Datsenko Vita V
Nenastina Tetyana O
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2020-10-01
