EP 0030403 B1 19830831 - PROCESS FOR THE DRYING AND CALCINATION OF BULK MATERIALS
Title (en)
PROCESS FOR THE DRYING AND CALCINATION OF BULK MATERIALS
Publication
Application
Priority
DE 2949479 A 19791208
Abstract (en)
[origin: ES8200234A1] A process for drying and/or calcining bulk material in a rotary kiln when hot gases are passed countercurrent to the flow of bulk material thereto, and the bulk material is dried and/or calcined in the rotary kiln is disclosed. According to the invention, the bulk material is dried and/or calcined, as it passes from the feed end of the rotary kiln to the discharge end thereof, by contacting the same with hot gases and thereafter, as the bulk material passes towards the discharge end of the rotary kiln, the bulk material is heated by indirect heat exchange with such hot gases. An apparatus for carrying out such process is also disclosed. The apparatus is a rotary kiln equipped with a centrally disposed tube, disposed axially within the rotary kiln toward the bulk material discharge end of the rotary kiln whereby an annular space is defined between the outer wall of the central tube and inner wall of the rotary kiln. The apparatus is equipped with means for passing hot gases within the central tube, means for passing bulk material on the outer wall of the central tube whereby the bulk material can be heated by indirect heat exchange with hot gases within the tube.
IPC 1-7
IPC 8 full level
B01J 6/00 (2006.01); F26B 3/00 (2006.01); F26B 3/24 (2006.01); F26B 11/02 (2006.01); F26B 11/04 (2006.01); F27B 7/16 (2006.01); F27B 7/20 (2006.01); F27B 7/34 (2006.01)
CPC (source: EP US)
F26B 3/00 (2013.01 - EP US); F26B 3/24 (2013.01 - EP US); F26B 11/028 (2013.01 - EP US); F27B 7/16 (2013.01 - EP US); F27B 7/34 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0030403 A1 19810617; EP 0030403 B1 19830831; AT E4559 T1 19830915; AU 538257 B2 19840802; AU 6512480 A 19810618; CA 1148354 A 19830621; DE 2949479 A1 19810611; DE 3064717 D1 19831006; ES 497477 A0 19811016; ES 8200234 A1 19811016; FI 803605 L 19810609; IN 153275 B 19840623; JP S5697537 A 19810806; US 4354826 A 19821019; YU 284580 A 19830630; ZA 806527 B 19811028
DOCDB simple family (application)
EP 80201140 A 19801202; AT 80201140 T 19801202; AU 6512480 A 19801205; CA 366272 A 19801205; DE 2949479 A 19791208; DE 3064717 T 19801202; ES 497477 A 19801205; FI 803605 A 19801118; IN 1303CA1980 A 19801121; JP 17307280 A 19801208; US 21228580 A 19801203; YU 284580 A 19801107; ZA 806527 A 19801023