Slag Crusher. Aug 28, 2016 Coal Crusher is preferably utilized for crushing slag is additional process after jaw crusher. As the material fed from Jaw crusher to coal crusher through belt conveyor, Strong beater inside the coal crusher, crushes the slag, by the impact which slag squashes right into 6mm to.About products and suppliers Purchase slag crusher for sale. from certified vendors only on Alibaba.com. Metals are a part of everyday life, from utensils to jewelry to construction material.Unless the raw material is processed properly, there are high chances that the final products might lack in strength or durability.