Method and plant for manufacturing slab articles made of stone or stone-like agglomerate material and slab article thus obtained

A slab article made of stone or stone-like agglomerate material, comprising:

• a surface layer obtained from a layer of a mix comprising at least one binder and a stone or stone-like granulated material;
• a main body obtained from a layer of an additional mix also comprising at least one binder and a stone or stone-like granulated material;
• wherein the thickness of the main body is greater than the thickness of the surface layer;
• characterized in that the granulated material of the surface layer is acid-resistant and has a hardness equal to or greater than 5 Mohs and in that the granulated material of said main body is obtained from minerals with a content by weight of crystalline silica less than or equal to 10% of the overall weight of the granulated material.

A plant for manufacturing slab articles made of stone or stone-like agglomerate material comprising:

• a station comprising means for distributing a layer of a mix comprising at least one binder and a stone or stone-like granulated material on a temporary support;
• a station comprising means for distributing a layer of an additional mix comprising at least one binder and a stone or stone-like granulated material on the temporary support so as to form a sandwich arrangement;
• a station comprising means for compacting the sandwich arrangement of mixes distributed on the temporary support;
• a station comprising means for performing hardening of the binders of the mixes;
• a station comprising means for cooling the sandwich arrangement of mixes so as to obtain a hardened slab article;
• a station comprising means for calibrating the thickness of the slab article and for machining the article by means of smoothing and/or polishing of the visible surface.