Improvements in and relating to Rotary Kilns for Burning and Calcining Lime, Cement, Chemicals and the like.

摘要

26,150. Radlowski, C. von. Nov. 19. Rotary kilns.- A kiln, using pulverulent fuel, petroleum residues, or generator or water gas, for burning and calcining lime, cement, chemicals, &c., consists of a preliminary-heating, a burning, and a cooling chamber, and is provided with means for constantly agitating the material. The preliminary heating and cooling chambers are divided into sections b1, b2, &c., n1, n2, &c. projecting into each other and so arranged that adjacent sections are rotated in opposite directions. For agitating the material, projections o, p, Figs. 3 and 4, are formed on the various sections ; the sectors b5, n1 are lined with refractory material. The burning-chamber comprises two oppositely-rotating sections provided with concentric perforated pipes g', g2 separated from the outer pipes by partitions h, so that the material falls through the perforations f into the cells i in the lower position of each section, and is discharged into the inner pipes g1, g2 in the upper position. Air is forced in at m, drawing with it heated air from the cooling-chamber. The pulverulent fuel, petroleum residue, or gas forming the fuel is introduced at any suitable point.