Slag
| Formula / Notation | CaO + SiO₂ → CaSiO₃ (slag in blast furnace) |
|---|---|
| Also Known As | Furnace slag, blast furnace slag, metallurgical slag, dross |
What is Slag?
The by-product of smelting ores, consisting of waste material (mainly metal oxides and silicates) that separates from the refined metal. In the iron blast furnace, calcium silicate slag floats on top of molten iron and is removed. Slag is used in construction as aggregate.
Formula & Notation
Other Names / Synonyms: Furnace slag, blast furnace slag, metallurgical slag, dross
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The by-product of smelting ores, consisting of waste material (mainly metal oxides and silicates) that separates from the refined metal. In the iron blast furnace, calcium silicate slag floats on top of molten iron and is removed. Slag is used in construction as aggregate.
Blast furnace slag is used as a raw material in cement and concrete production (ground granulated blast furnace slag, GGBS). Slag is used in road construction as aggregate. Vitrified slag (glass) is used in insulation materials.
Molten slag is extremely hot and poses severe burn risks. Slag dust may contain hazardous heavy metals and should not be inhaled. Workers in smelting operations require protective gear against heat and toxic fumes.
The formula or notation for Slag is: CaO + SiO₂ → CaSiO₃ (slag in blast furnace)