EAF slag

Electric Arc Furnace Slag

EAFS is a by-product of the steel-making process and it can be described as a solid solution of oxides.

Physical Description
EAF Slag is produced in an Electric Arc Furnace.
The visual appearance of the slag is a dark greyish colour.

With respect to other slags (blast furnace slag), it can be tougher, with a density of about 20 - 25% greater than basalt or BFS.

When crushed, the pieces have a typical cubical shape.
EAFS in common with most steel slags is subjected to a slight dimensional expansion until it fully hydrates. Until this occurs, particular care should be taken not to place it in rigidly confined spaces.

Chemical Properties

Method of Manufacture
Steel slags are produced during the melting and refining of recycled steel using electrical energy and fluxes. Lime is used as a flux to remove silicates and phosphorus from the molten steel to form slag. The slag derived from this procedure is then is tapped or poured out of the slag door.

The molten slag then begins to solidify fairly quickly into a rock-like product. The material can be crushed or screened for further recycling

Conversion Of Steel/Iron Slag Waste Into Valuable Products

The material may be treated at the authorised recovery facility (R5) (for example by carrying out a deferrisation process) due to the presence of steel which has been erroneously skimmed.

The material can be fully treated and recovered as an aggregate in the construction industry.

The information above can, by no means, be an exhaustive listing of our steel skulls characteristics. Please note that according to the end-user requirements we can select and process a bespoke source that meets your criteria.

The raw material can be processed and delivered in 20’ containers or bulk vessels but in strict compliance with the Basel Convention and the European Rules regulating the environment and the transboundary shipments of wastes.