Process for the preparation of multilayer blocks suitable for the production of slabs without the use of a sawing machine

The process for the production of a multi-layer block from a mixture of marble, stone, granite, sand, and the like, with a binder which consists of the steps of:

• (1) conveying said mixture into a distributor, said distributor having a weighing device for weighing the amount of said mixture, (2) mixing said weighed mixture in said distributor to obtain an homogeneous mixture, (3) conveying said weighed homogeneous mixture into a mold provided with a vertically movable bottom, (4) subjecting said mixture to a vibrating action by means of a vibrating plate, (5) lowering said mixture a distance equal to the thickness of a single layer, (6) covering said layer with a sheet of impermeable material, and (7) repeating said steps (1)-(6) until said mold is filled, whereby a multi-layer block is formed with each layer covered by a sheet of impermeable material, compacting, allowing said block to set and separating said layers by removing the sheets of impermeable material.