Open AccessStudy of physical and chemical properties of iron oxides-containing man-caused raw materials sinter production
Author(s) -
А. Е. Аникин,
G V Galevsky,
В. В. Руднева
Publication year - 2018
Publication title -
černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj i èkonomičeskoj informacii/černaâ metallurgiâ. bûlletenʹ naučno-tehničeskoj informacii
Language(s) - English
Resource type - Journals
eISSN - 2619-0753
pISSN - 0135-5910
DOI - 10.32339/0135-5910-2018-9-107-112
Subject(s) - raw material , mill scale , materials science , metallurgy , grain size , bulk density , environmental science , chemistry , soil science , organic chemistry , soil water
Results of studies of physical and chemical properties of rolling scale and dewatered sludge from gas-cleaning system of BOF plant quoted, carried out for estimation of technological advisability of application them in metallization processes. The studies carried out by application of standard methodics of determination of chemical, phase, grain-sized contents and density of fine and powder materials. It was determined, that content of total iron, FeO and Fe 2 O 3 oxides, Sulphur and Phosphor in the scale makes figures 73.3, 75.5, 20.9, 0.036 and 0.019 % correspondently, in the sludge – 41.2, 4.7, 53.7, 0.21 and 0.15 % correspondently. The sludge contains also up to 20.9% of CAO and 4.3% of total carbon. Grain-size contents of the scale and the sludge are considerably different: content of size grade +1.0 mm and –0.016 mm is in the scale 63.3% and 0%, in the sludge – 14.8 and 44.5 % correspondently. Real density of the scale is 4.6–4.9 g/sm 3 . The results obtained confirm a technological advisability of application of fine-grained scale and powdered sludge in metallization processes, including their preliminary briquetting comprising carbonic reduction agent.