Speaker
Mr
Kohei Okada
(Graduate School of Environmental Studies, Tohoku University, Sendai, Japan)
Description
Improvement of sinter reducibility is necessary for high production rate of blast furnace, involving reduction of the slag component in the sinter. Replacement of peridotite (MgO-SiO2) for dolomite (CaMg(CO3)2) is a potent option as dolomite does not contain SiO2. However, dolomite is hard to assimilate and deteriorates sinter strength.
In this study, assimilation behavior of dolomite has been investigated by means of tablet firing experiments in an electric furnace, where the tablets was compacted with a 2-3mm(?) dolomite particle in the matrix of calcium ferrite reagent. As a result, a reaction layer of a dolomite particle and calcium ferrite was formed by 20μm thickness at 1473K which is the initial melt forming temperature and identified as SFCA by EPMA. At 1527K, the reaction layer thickened to 500μm.
Author
Mr
Kohei Okada
(Graduate School of Environmental Studies, Tohoku University, Sendai, Japan)
Co-author
Prof.
Jun Okazaki
(Graduate School of Environmental Studies, Tohoku University, Sendai, Japan)