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Information × Registration Number 0224U002895, 0122U002384 , R & D reports Title Аnvestigation of physicochemical properties of oily scale from dumps of metallurgical plants popup.stage_title Head Tsvetkov Serhii V., к.т.н. Registration Date 12-03-2024 Organization The Gas Institute of the National Academy of Sciences of Ukraine popup.description2  The state of the problem in Ukraine and the existing methods and equipment for degreasing slag from metallurgical enterprise dumps. A study of the physico-chemical properties and technological features of fine-dispersed slag processing was carried out on the example of samples of oiled slag from the dumps of the metallurgical plant "Kryvorizhstal"; the conditions of effective degreasing of finely dispersed oily scum are defined for the further development of an energy-efficient and environmentally safe technology for obtaining purified powders of iron oxides. According to the results of the research, it was established that the samples of waste slag from the metallurgical plant "Kryvorizhstal" are a fine-porous, clay-like oily substance of black color, of different humidity and fractionation, with admixtures of solid organic substances and sand. Treatment of oiled dump scum with 3% hydrogen peroxide (H2O2) allows to remove organic substances from it, including some part of the oil. Further partial removal of oil from the source material treated with hydrogen peroxide while preserving all types of iron oxides is possible during heat treatment in the temperature range of 450-550 °C. Complete degreasing occurs during heat treatment up to a temperature of 950°C. At the same time, the final product contains almost 97.5% of hematite Fe2O3-α, up to 1.3% of a mixture of oxides of various metals and more than 1.2% of quartz (sand). The expediency and effectiveness of using oiled scum as a source of degreased iron oxides for the needs of various industries is substantiated. Product Description popup.authors popup.nrat_date 2024-03-12 Close