Process configuration
Steel slag, converter slag and stainless slag processing.
| Stage | Equipment | Function |
|---|---|---|
| Feed | Hopper with grizzly | Sizing of lump slag ahead of the primary |
| Primary | PEY hydraulic-protected jaw crusher | Reduction with relief against uncrushable material |
| Iron removal | Over-belt magnet after primary | Recovery of coarse metallic iron |
| Secondary | RHP cone or RNP impactor | Reduction to 0 – 40 mm |
| Liberation | RVSI vertical shaft impactor | Liberation of steel entrapped in the slag matrix |
| Screening | YA or ZKX screen with final magnet | Metallic concentrate and graded slag aggregate |
Design notes
Hydraulic protection
PEY jaw crushers relieve pressure instantly when an uncrushable block enters the chamber and reset automatically, which protects the frame and the drive train.
Metal recovery at each stage
Coarse iron is recovered after the primary, fine iron after liberation; recovery rate depends on the slag source and the liberation size.
Abrasion management
Slag is highly abrasive; liner material and change-out intervals are specified against the measured abrasion index of the source slag.
Product routes
The slag fraction is used as road-base aggregate or as a cement blending component, subject to the free-lime and stability limits that apply locally.
