Steel Slag
Steel slag is the residue of the steel production process, a byproduct of smelting ore to extract usable steel. When the ore is heated and melted in a furnace, most of the impurities such as silica, phosphorus and sulfur are removed, leaving behind a slag, or molten metal. This slag is then tapped off and cooled. Steel slag is composed of silicates and other non-metallic minerals and has a complex chemical composition.
Steel slag is highly sought-after in the construction industry. Its durable and lightweight properties make it an ideal material for a variety of different applications. Its thermal properties allow it to be used to insulate buildings, and its elastic properties make it ideal for use in roads and other structures. Steel slag is also utilized in filtration systems, as its angularity prevents it from becoming as easily clogged as other media.
The main uses for steel slag are as a cement additive, for asphalt pavement, and for road construction. As a cement additive it is used to improve concretes resistance to abrasion and corrosion. When mixed with asphalt, steel slag can improve road pavement strength and provide drainage. It is also used in some construction applications like road base course and embankment fill.
As with any material, there are some drawbacks to using steel slag. For example, it may contain trace amounts of dangerous substances such as lead, arsenic, chromium and cadmium. These substances can be dangerous if inhaled or ingested, so it is important to take the necessary safety precautions when handling steel slag. Additionally, the dust produced during processing steel slag can be an irritant, so it is important to contain it and prevent it from entering the environment.
Steel slag is an important part of the steel production process. It is a versatile material with a variety of uses in the construction industry, but it is important to use it with caution to protect workers and the environment. With proper safety precautions, steel slag can be a useful and beneficial material for many applications.
