Jaw crusher is primary used for crushing big lumps of slag. As the material fed into the Jaw crusher, Heavy duty hardened jaws crushes the big lumps of slag in medium size which then goes to the next process.
Depends upon the hardness of slag (e.g. Induction furnace slag or Arc furnace slag.) Jaw crusher also used by various industries for crushing stone, coal, hard coke, refectory, ferro manganese, iron ore, etc.