Old but effective
For many decades, high-quality construction materials have been manufactured in Linz from slags obtained from the blast furnace and steelmaking processes.
Whether quickly cooled with water (metallurgical slag) or cooled slowly (lump slag), these are secondary raw materials in sectors such as the cement, insulation and road construction industries.
Material recycling processes contribute significantly to the conservation of natural resources and environmental protection.
Granulated blast furnace slag
Metallurgical slag is a valuable additive in cement making. Its use yields substantial benefits: Conservation of natural resources, reduction of CO2 through reduced use of clinkers and energy savings
This material also shows its strengths as a quartz-free sand in corrosion protection.
Blast furnace lump slag
Blast furnace lump slag is used in civil engineering, particularly in road construction. Product advantages also include volume stability, high load capacities, angular grain shapes and low bulk density.
Blast furnace lump slag is sold in a grain size of 3/8 as grit.
Metallurgical slag is among the hardest stones used in road construction. Because of its enormous resistance to abrasion and excellent grip characteristics, metallurgical slag is used in wear-resistant asphalt surface layers. It is also used as an additive in cement making.
Pouring ladle slag
Is used as an additive in the blast furnace. Used in the cement making industry and the manufacture of rock wool as a calcium-containing and aluminum-containing raw material. Pouring ladle slag is also used in agriculture as a lime fertilizer.