The article introduces possibility how to use special material from plasterboard back to the production of plasterboards. The recycled material was prepared from standard plasterboards KNAUF WHITE (it means plasterboard type A according to European standard EN 520) [1]. Plasterboards were crushing. micromilled and separated from the paper on recycling line. https://www.inmuebleslasmercedes.com/product-category/deep-fryer-filter-paper/