Ferrous slag has over many years proved to be a successful alternative material to aggregates derived from natural sources.
Blast furnace slag is naturally cementitious and is commonly used in the cement industry to blend with other materials.
Steel slag from the converter furnace is also suited for use in cement manufacturing, after it is milled to a fine material which absorbs into the mix in the kiln. Indeed, cement made with slag aggregate may achieve permeabilities and strengths that compare favorably to concrete made with conventional aggregates.
Superfine slag cement
Superfine slag cement is used as a feedstock for the cement kiln