ES430039A1 - Apparatus for the thermal treatment of fine grain material, with additional burner disposal in the preheater. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Apparatus for the thermal treatment of fine grain material, with additional burner arrangement in the preheater, specially trained to calcinate cement, which is equipped with an oven, preferably a rotary tube furnace, to finish calcining the material, oven that a device, preferably consisting of several cyclone separators and intended to preheat the material with the help of hot exhaust gases from the furnace, is attached to the furnace by means of at least one device on the exhaust side of the gases. The exhaust gas line preferably runs in a vertical direction, into which at least one material supply line opens, and in which at least one separator is provided for separating the gas and the material, the discharge line of which discharges material at the entrance to the furnace, and in which an additional heat supply is also provided, characterized in that at least one burning device, equipped with at least one burner, is arranged - viewed in the direction of gas flow - at a certain distance in front of the mouth of the material feed line in the exhaust gas line, such so that the material reaches the combustión zone for the first time in the opposite direction to the direction of the gas flow, and because in the area of the burner outlet point an air supply line for air flows into the exhaust gas pipeline secondary. (Machine-translation by Google Translate, not legally binding)