Dry mechanical conveyor plant for pyrites and coal dust

A conveyor plant comprising a set of storage tanks (2), a conveyor for receiving and safely handling pyrites, coal dust and other foreign materials (15) coming from mills for the pulverization of solid fossil fuel and held in said set of storage tanks (2), one for each mill, an enclosed or open metal container (1) for said conveyor, inside which a high temperature resistant metal conveyor belt (6) not allowing the propagation of any fire is disposed, and a stockage silo (16) downstream from said conveyor, the storage tanks (2), said metal container (1) and the stockage silo (16) being provided with a combustion detection sensor system (19) which controls the admission of inert gas or water onto said pyrites, coal dust and other foreign materials according to plant configuration and the conveyance of the pyrites, coal dust and other foreign materials (15) to the stockage silo (16) being performed by an exclusively mechanical conveyor or by a mechanical and pneumatic conveyor, upon elimination of ferrous material through an iron removal system (25) and size reduction through a grinding system (26) when a pneumatic conveyor is present.