METHOD FOR MAKING ARTIFICIAL STONE CONSTRUCTION ELEMENTS

摘要

2141415 9427925 PCTABS00034 A process is disclosed whereby a sandy-argillaceous base material, for which waste moulding material is used, undergoes magnetic separation, crushing and sifting, the undersize product being removed and heat cured in an oxidizing environment at a predetermined temperature. The undersize and oversize products are then mixed with a binding agent and water in predetermined proportions to produce a raw mixture from which the artificial stone building blocks are formed by pressing followed by hardening.