Steel Slag is a steel-making industry by-product, currently used in a variety of environmental applications. Slag particles tend to be cubic, with vesicular surfaces that enable them to cling to each other. Steel slag can be used for surface and subsurface land layers, primarily to support constructions activities (e.g., as fill, road base, landscape aggregate, erosion control aggregate, gabions, riprap and railroad ballast). Slag may also be placed in and near water bodies for bank stabilization (Proctor et al. 2000), and in farm fields to condition the soil and serve as an aggregate for drainage trenches. CST produces two basic types of steel slags: The steel slag produced in oxygen converters (BOF) of the LD type, a by-product in steel production, and the NP steel slag, originated from cleaning the skimmer, the steel -making plant and the torped car. Although these slags present a few differences, their final uses are quite similar.
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