COUNTERWEIGHT AND METHOD FOR RECYCLING THE SAME

摘要

A counterweight(10),characterized in that it comprises,as a weighing material,a metal component contained in a slag produced in an iron making process or a residue in a melting furnace for waste treatment;a method for recycling a counterweight(10),which comprises a removal step of removing an outer shell(15)of an used counterweight(10)having a magnetic metal component as a weighing material,a disintegration step of crushing a filler containing a metal component in the counterweight(10)having been removed of the outer shell(15)to break the binding between the metal component and another component of the filler,a selection step of separating the disintegrated products into a high specific gravity part containing the metal component as a primary component and a low specific gravity part composed of the other products,and utilizing the high specific gravity part as a weighing material in a new counterweight.The above counterweight is good in handleability,can be produced at a reduced cost,and is environmentally friendly.