Stabilization of Disintegrating Ferroalloy and Steelmaking Slags

Abstract

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Environmental characterization of ferrochromium production waste (refined slag) and its carbonization product

“…Firstly, disposal and storage of the wastes occupies a large area causing pollution of soil and wastewater with heavy metals indicating the increase of charges for environmental damages of plants and factories every year. The amount of the deposited man-made wastes (refined ferrochrome slag) in the territory Ural Mountain massive is roughly 40 million tons (ferrochromium wastes from Aktobe Ferroalloys Plant, Serov Ferroalloy plant, Klyuchevsky ferroalloy plant, Chelyabinsk Electrometallurgical Plant) [ 8 , 9 ].…”

“…The main reason for the self-dispersion of refined slag is the polymorphism of the dicalcium silicate; it attains a dusty state during the cooling process after removed from the furnace. During the cooling α-C 2 S converts to β-C 2 S, then to γ-C 2 S [ 10 ] which causes the increase in the volume of the crystal lattice [ 9 ].…”