Drying plant for particulate materials

A drying plant for particulate materials comprising:

• an ascending drying duct, a hot gas generator designed for supplying to the inlet of the drying duct a flow of high-temperature process gas, and a particulate feeding device structured so as to be able to feed into the drying duct a flow of the particulate material to be dried substantially without relevant leaks of process gas from the drying duct;
• wherein the drying duct has a substantially rectilinear and substantially horizontal starting section, a substantially rectilinear ascending final section extending upward with a predetermined angle of inclination with respect to the vertical, and an intermediate curved section that connects the starting section to the final section;
• wherein the hot gas generator is connected to the mouth of the starting section of the drying duct;
• wherein the particulate feeding device is located along the starting section of the drying duct, at a predetermined distance from the curved intermediate section;
• and in that
• wherein it also comprises a bypass duct that branches from the starting section of the drying duct upstream of the particulate feeding device, and then rejoins the drying duct at the intermediate curved section, so as to feed the process gas that flows therein back into the drying duct.