Substitute for Raw Materials (wastes without calorific value):
- Mud with alumina (aluminum)
- Steel sludge (iron)
- Foundry sand (silica)
- Filtration grounds (silica)
- Used refractories (aluminum)
- Wastes from the manufacture of glass (fluorine)
- Plaster, Ashes and Slag
- Waste from oil well drilling
- Contaminated soils from gas stations
See too: