Sludge drying processing method and equipment

The invention discloses a sludge drying processing method; firstly, the filter-pressed sludge and combustible material are mixed, the mixed sludge is extruded into sludge string by a sludge string extrusion machine at the top part of a pre-baking tank, in the dropping process of the sludge string, an infrared lamp on the inner wall of the pre-baking tank is used for shadowless irradiation, and a layer of soft shell is formed at the outer surface of the sludge string after the heat is adsorbed; the invention further discloses equipment for realizing the method; the equipment solves the problems that the traditional belt drier has short distance of the sludge strings, so as to cause caking, and the distance is long, the unit treatment capacity is low, hot air heat is hard to be utilized effectively and the drying speed is low; the equipment is particularly suitable for sludge dry treatment for sludge incineration; the invention can promote the industrialization progress of the sludge drying incineration.