scrap of thermosetting plastics is reclaimed and recycled by an integrally combined apparatus which includes a device for pulverizing and atomizing the scrap , and a device for blending fine powder of the scrap with virgin material of thermosetting plastic . the device for blending includes a feed screw of constant revolution speed for conveying the fine powder of scrap and a variable speed feed screw for conveying virgin material in order to obtain high blending performance .