What is slag from a steel mill?

Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. The slag occurs as a molten liquid melt and is a complex solution of silicates and oxides that solidifies upon cooling. The open hearth furnace process is no longer used.

What is slag used for?

Granulated blast furnace slag has been used as a raw material for cement production and as an aggregate and insulating material. and granulated slag have also been used as sand blasting shot materials.

What is the purpose of slag in concrete?

Slag cement is most widely used in concrete, either as a separate cementitious component or as part of a blended cement. It works synergistically with portland cement to increase strength, reduce permeability, improve resistance to chemical attack and inhibit rebar corrosion.

What is slag sand used for?

A gritty, course natural material that used for a variety of projects. This bulk product can be used as beach sand to refresh a beach to make a clean enjoyable area for the season. Sharp Sand with its compact ability also can be used as part of the main base underneath brick pavers or retaining walls.

Does slag float in water?

Without knowing that it would float on water i would have attributed it either to scoria (Schlackenlava, Lavaschlacke in ger) or to boiler slag (Kesselschlacke). The latter can be very light weighted (i found samples at an old coal mine that had coal powered steam engines). And yes, those can float on water.

What is slag in construction?

Definition: granulated blast-furnace slag that has been finely ground and that is hydraulic cement.- ACI Concrete Terminology. The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials.

What is slag formula?

The lead oxides are reduced by carbon forming CO and CO2 gases. To form slag, soda ash (Na2CO2) is added. The slag can generally be expressed by the formula FeSNa2S(O).

What is the advantage of slag cement?

Slag concretes have improved long-term strengths even though their early strength development is lower than portland cement concretes. They also have lower permeability and improved durability. Slag cement generally costs less than portland cement.

How is slag sand made?

“Slag Sand” is a non-metallic product, consisting essentially of glass containing silicates and alumino-silicates of lime. Slag is a byproduct of metal smelting processes, manufactured under controlled conditions.

Is slag good for a driveway?

Steel slag is not just good for driveways, it is also used by homeowners as a landscaping stone in back yards around a pool area or patio. Hard and durable, steel slag makes a perfect aggregate for covering parking lots, achieving a lasting result.

What does basic slag mean?

Definition of basic slag chiefly British. : a slag low in silica and high in base-forming oxides that is used in the basic process of steelmaking and that is subsequently useful as a fertilizer.